LT6011IDD

LT6011 LINER

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n Precision Photo Diode Amplifiers n Instrumentation Amplifiers n Battery-Powered Precision Systems n Low Voltage Precision Systems n 60mV Maximum Offset Voltage n 300pA Maximum Input Bias Current n 135mA Supply Current per Amplifier n Rail-to-Rail Output Swing n 120dB Minimum Voltage Gain, VS = –15V n 0.8mV/°C Maximum VOS Drift n 14nV/ÖHz Input Noise Voltage n 2.7V to –18V Supply Voltage Operation n Operating Temperature Range: – 40°C to 85°C n Space Saving 3mm · 3mm DFN Package Dual/Quad135mA, 14nV/ÖHz, Rail-to-Rail Output Precision Op Amp , LTC and LT are registered trademarks of Linear Technology Corporation. DESCRIPTIO UFEATURES APPLICATIO SU TYPICAL APPLICATIO U SoftSpan is a trademark of Linear Technology Corporation. The LT 6011/LT6012 op amps combine low noise and high precision input performance with low power con- sumption and rail-to-rail output swing. Input offset voltage is trimmed to less than 60mV. The low drift and excellent long-term stability guarantee a high accuracy over temperature and time. The 300pA maxi- mum input bias current and 120dB minimum voltage gain further maintain this precision over operating conditions. The LT6011/LT6012 work on any power supply voltage from 2.7V to 36V and draw only 135mA of supply current on a 5V supply. The output swings to within 40mV of either supply rail, making the amplifier a good choice for low voltage single supply applications. The LT6011/LT6012 are specified at 5V and –15V supplies and from –40°C to 85°C. The LT6011 (dual) is available in SO-8 and space saving 3mm · 3mm DFN packages. The LT6012 (quad) is available in SO-14 and 16-pin SSOP packages. Low Power Programmable Output Range 16-Bit SoftSpan TM DAC 1/2 LT6011 VS+ VS+ VS– 1/2 LT601116-BIT DAC LTC1592 RCOM VCC 0.1µF R2R1 ROFS REF RFB IOUT1 VOUT 3IOUT2 AGND GND CLR CS/LD SCK SDI SDO 270pF 270pF SUPPLY CURRENT @ 1.6mA TO 4mA DEPENDING ON CODE

6011 TA01

–IN A +IN A +IN B –IN B OUT B NC OUT D –IN D +IN D V +IN C –IN C OUT C NC A B D C TOP VIEW S PACKAGE 14-LEAD PLASTIC SO OUT A –IN A +IN A V +IN B –IN B OUT B OUT D –IN D +IN D V +IN C –IN C OUT C A B D C Operating Temperature Range (Note 4) .. – 40°C to 85°C Specified Temperature Range (Note 5) ... – 40°C to 85°C ORDER PART NUMBER DD PART MARKING* TJMAX = 125°C, qJA = 160°C/W UNDERSIDE METAL CONNECTED TO V– (PCB CONNECTION OPTIONAL) LT6011CDD LT6011IDD LT6011ACDD LT6011AIDD (Note 1)ABSOLUTE AXI U RATI GSW WW U PACKAGE/ORDER I FOR ATIOUU W TOP VIEW DD PACKAGE 8-LEAD (3mm · 3mm) PLASTIC DFN 1OUT A –IN A +IN A V OUT B –IN B +IN B B A ORDER PART NUMBER S8 PART MARKING LT6011CS8 LT6011IS8 LT6011ACS8 LT6011AIS8 6011 6011I 6011A 6011AI TJMAX = 150°C, qJA = 190°C/W TOP VIEW OUT B –IN B +IN B OUT A –IN A +IN A V S8 PACKAGE 8-LEAD PLASTIC SO B A Maximum Junction Temperature Storage Temperature Range LACD ORDER PART NUMBER TJMAX = 150°C, qJA = 110°C/W LT6012CS LT6012IS LT6012ACS LT6012AIS *Temperature and electrical grades are identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges. ORDER PART NUMBER GN PART MARKING LT6012CGN LT6012IGN LT6012ACGN LT6012AIGN 6012 6012I 6012A 6012AI TJMAX = 150°C, qJA = 135°C/W

The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified. (Note 5)

ELECTRICAL CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VOS Input Offset Voltage (Note 8) LT6011AS8, LT6012AS 20 60 mV TA = 0°C to 70°C l 85 mV TA = –40°C to 85°C l 110 mV LT6011ADD, LT6012AGN 25 85 mV TA = 0°C to 70°C l 135 mV TA = –40°C to 85°C l 170 mV LT6011S8, LT6012S 25 75 mV TA = 0°C to 70°C l 100 mV TA = –40°C to 85°C l 125 mV LT6011DD, LT6012GN 30 125 mV TA = 0°C to 70°C l 175 mV TA = –40°C to 85°C l 210 mV DVOS/DT Input Offset Voltage Drift (Note 6) LT6011AS8, LT6011S8, LT6012AS,LT6012S l 0.2 0.8 mV/°C LT6011ADD, LT6011DD,LT6012AGN, LT6012GN l 0.2 1.2 mV/°C IOS Input Offset Current (Note 8) LT6011AS8, LT6011ADD, LT6012AS, LT6012AGN 20 300 pA TA = 0°C to 70°C l 450 pA TA = –40°C to 85°C l 600 pA LT6011S8, LT6011DD, LT6012S, LT6012GN 150 900 pA TA = 0°C to 70°C l 1200 pA TA = –40°C to 85°C l 1500 pA IB Input Bias Current (Note 8) LT6011AS8, LT6011ADD, LT6012AS, LT6012AGN 20 –300 pA TA = 0°C to 70°C l –450 pA TA = –40°C to 85°C l –600 pA LT6011S8, LT6011DD, LT6012S, LT6012GN 150 –900 pA TA = 0°C to 70°C l –1200 pA TA = –40°C to 85°C l –1500 pA Input Noise Voltage 0.1Hz to 10Hz 400 nV P-P en Input Noise Voltage Density f = 1kHz 14 nV/ ÖHz in Input Noise Current Density f = 1kHz, Unbalanced Source Resistance 0.1 pA/ ÖHz RIN Input Resistance Common Mode, V CM = 1V to 3.8V 10 120 G W Differential 20 M W CIN Input Capacitance 4p F VCM Input Voltage Range (Positive) Guaranteed by CMRR l 3.8 4 V Input Voltage Range (Negative) Guaranteed by CMRR l 0.7 1 V CMRR Common Mode Rejection Ratio V CM = 1V to 3.8V l 107 135 dB Minimum Supply Voltage Guaranteed by PSRR l 2.4 2.7 V PSRR Power Supply Rejection Ratio V S = 2.7V to 36V, VCM = 1/2VS l 112 135 dB AVOL Large-Signal Voltage Gain R L = 10k, VOUT = 1V to 4V l 300 2000 V/mV RL = 2k, VOUT = 1V to 4V l 250 2000 V/mV Channel Separation V OUT = 1V to 4V l 110 140 dB

The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified. (Note 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VOUT Maximum Output Swing No Load, 50mV Overdrive 35 55 mV (Positive, Referred to V+) l 65 mV ISOURCE = 1mA, 50mV Overdrive 120 170 mV l 220 mV Maximum Output Swing No Load, 50mV Overdrive 40 55 mV (Negative, Referred to 0V) l 65 mV ISINK = 1mA, 50mV Overdrive 150 225 mV l 275 mV ISC Output Short-Circuit Current (Note 3) V OUT = 0V, 1V Overdrive, Source 10 14 mA l 4m A VOUT = 5V, –1V Overdrive, Sink 10 21 mA l 4m A SR Slew Rate A V = –10, RF = 50k, RG = 5k 0.06 0.09 V/ ms TA = 0°C to 70°C l 0.05 V/ ms TA = –40°C to 85°C l 0.04 V/ ms GBW Gain Bandwidth Product f = 10kHz 250 330 kHz l 225 kHz ts Settling Time A V = –1, 0.01%, VOUT = 1.5V to 3.5V 45 ms tr, tf Rise Time, Fall Time A V = 1, 10% to 90%, 0.1V Step 1 ms DVOS Offset Voltage Match (Note 7) LT6011AS8, LT6012AS 50 120 mV TA = 0°C to 70°C l 170 mV TA = –40°C to 85°C l 220 mV LT6011ADD, LT6012AGN 50 170 mV TA = 0°C to 70°C l 270 mV TA = –40°C to 85°C l 340 mV LT6011S8, LT6012S 50 150 mV TA = 0°C to 70°C l 200 mV TA = –40°C to 85°C l 250 mV LT6011DD, LT6012GN 60 250 mV TA = 0°C to 70°C l 350 mV TA = –40°C to 85°C l 420 mV DIB Input Bias Current Match (Note 7) LT6011AS8, LT6011ADD, LT6012AS, LT6012AGN 50 600 p A TA = 0°C to 70°C l 900 pA TA = –40°C to 85°C l 1200 pA LT6011S8, LT6011DD, LT6012S, LT6012GN 1800 p A TA = 0°C to 70°C l 2400 p A TA = –40°C to 85°C l 3000 pA DCMRR Common Mode Rejection Ratio l 101 135 dB Match (Note 7) DPSRR Power Supply Rejection Ratio l 106 135 dB Match (Note 7) IS Supply Current per Amplifier 135 150 mA TA = 0°C to 70°C l 190 mA TA = –40°C to 85°C l 210 mA

ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = –15V, VCM = 0V, RL to 0V, unless otherwise specified. (Note 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VOS Input Offset Voltage (Note 8) LT6011AS8, LT6012AS 30 135 mV TA = 0°C to 70°C l 160 mV TA = –40°C to 85°C l 185 mV LT6011ADD, LT6012AGN 35 160 mV TA = 0°C to 70°C l 210 mV TA = –40°C to 85°C l 225 mV LT6011S8, LT6012S 35 150 mV TA = 0°C to 70°C l 175 mV TA = –40°C to 85°C l 200 mV LT6011DD, LT6012GN 40 200 mV TA = 0°C to 70°C l 250 mV TA = –40°C to 85°C l 275 mV DVOS/DT Input Offset Voltage Drift (Note 6) LT6011AS8, LT6011S8, LT6012AS, LT6012S l 0.2 0.8 mV/°C LT6011ADD, LT6011DD, LT6012AGN, LT6012GN l 0.2 1.3 mV/°C IOS Input Offset Current (Note 8) LT6011AS8, LT6011ADD, LT6012AS LT6012AGN 20 300 pA TA = 0°C to 70°C l 450 pA TA = –40°C to 85°C l 600 pA LT6011S8, LT6011DD, LT6012S, LT6012GN 150 900 pA TA = 0°C to 70°C l 1200 p A TA = –40°C to 85°C l 1500 pA IB Input Bias Current (Note 8) LT6011AS8, LT6011ADD, LT6012AS, LT6012AGN 20 –300 pA TA = 0°C to 70°C l –450 p A TA = –40°C to 85°C l –600 pA LT6011S8, LT6011DD, LT6012S, LT6012GN 150 –900 pA TA = 0°C to 70°C l –1200 pA TA = –40°C to 85°C l –1500 pA Input Noise Voltage 0.1Hz to 10Hz 400 nV P-P en Input Noise Voltage Density f = 1kHz 13 nV/ ÖHz in Input Noise Current Density f = 1kHz, Unbalanced Source Resistance 0.1 pA/ ÖHz RIN Input Resistance Common Mode, V CM = –13.5V 50 400 G W Differential 20 M W CIN Input Capacitance 4p F VCM Input Voltage Range Guaranteed by CMRR l –13.5 –14 V CMRR Common Mode Rejection Ratio V CM = –13.5V to 13.5V 115 135 dB l 112 135 dB Minimum Supply Voltage Guaranteed by PSRR l –1.2 –1.35 V PSRR Power Supply Rejection Ratio V S = –1.35V to –18V l 112 135 dB AVOL Large-Signal Voltage Gain R L = 10k, VOUT = –13.5V to 13.5V 1000 2000 V/mV l 600 V/mV RL = 5k, VOUT = –13.5V to 13.5V 500 1500 V/mV l 300 V/mV Channel Separation V OUT = –13.5V to 13.5V l 120 140 dB VOUT Maximum Output Swing No Load, 50mV Overdrive 45 80 mV (Positive, Referred to V+) l 100 mV ISOURCE = 1mA, 50mV Overdrive 140 195 mV l 240 mV Maximum Output Swing No Load, 50mV Overdrive 45 80 mV (Negative, Referred to V–) l 100 mV ISINK = 1mA, 50mV Overdrive 150 250 mV l 300 mV

ISC Output Short-Circuit Current V OUT = 0V, 1V Overdrive (Source) 10 15 mA (Note 3) l 5m A VOUT = 0V, –1V Overdrive (Sink) 10 20 mA l 5m A SR Slew Rate A V = –10, RF = 50k, RG = 5k 0.08 0.11 V/ ms TA = 0°C to 70°C l 0.07 V/ ms TA = –40°C to 85°C l 0.05 V/ ms GBW Gain Bandwidth Product f = 10kHz 275 350 kHz l 250 kHz ts Settling Time A V = –1, 0.01%, VOUT = 0V to 10V 85 ms tr, tf Rise Time, Fall Time A V = 1, 10% to 90%, 0.1V Step 1 ms DVOS Offset Voltage Match (Note 7) LT6011AS8, LT6012AS 50 270 mV TA = 0°C to 70°C l 320 mV TA = –40°C to 85°C l 370 mV LT6011ADD, LT6012AGN 50 320 mV TA = 0°C to 70°C l 420 mV TA = –40°C to 85°C l 450 mV LT6011S8, LT6012S 70 300 mV TA = 0°C to 70°C l 350 mV TA = –40°C to 85°C l 400 mV LT6011DD, LT6012GN 80 400 mV TA = 0°C to 70°C l 500 mV TA = –40°C to 85°C l 550 mV DIB Input Bias Current Match (Note 7) LT6011AS8, LT6011ADD, LT6012AS, LT6012AGN 50 600 pA TA = 0°C to 70°C l 900 pA TA = –40°C to 85°C l 1200 pA LT6011S8, LT6011DD, LT6012S, LT6012GN 1800 pA TA = 0°C to 70°C l 2400 pA TA = –40°C to 85°C l 3000 pA DCMRR Common Mode Rejection Ratio l 109 135 dB Match (Note 7) DPSRR Power Supply Rejection Ratio l 106 135 dB Match (Note 7) IS Supply Current per Amplifier 260 330 mA TA = 0°C to 70°C l 380 mA TA = –40°C to 85°C l 400 mA ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = –15V, VCM = 0V, RL to 0V, unless otherwise specified. (Note 5) Note 1: Absolute Maximum Ratings are those beyond which the life if the device may be impaired. Note 2: The inputs are protected by back-to-back diodes and internal series resistors. If the differential input voltage exceeds 10V, the input current must be limited to less than 10mA. Note 3: A heat sink may be required to keep the junction temperature below absolute maximum ratings. Note 4: Both the LT6011C/LT6012C and LT6011I/LT6012I are guaranteed functional over the operating temperature range of – 40°C to 85°C. Note 5: The LT6011C/LT6012C are guaranteed to meet the specified performance from 0°C to 70°C and is designed, characterized and expected to meet specified performance from –40 °C to 85°C but is not tested or QA sampled at these temperatures. The LT6011I/LT6012I are guaranteed to meet specified performance from –40°C to 85°C. Note 6: This parameter is not 100% tested. Note 7: Matching parameters are the difference between any two amplifiers. DCMRR and DPSRR are defined as follows: (1) CMRR and PSRR are measured in mV/V for the individual amplifiers. (2) The difference between matching amplifiers is calculated in mV/V. (3) The result is converted to dB. Note 8: The specifications for VOS, IB, and IOS depend on the grade and on the package. The following table clarifies the notations. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS STANDARD GRADE A GRADE

TYPICAL PERFOR A CE CHARACTERISTICS UW Distribution of Input Offset Voltage Input Offset Voltage vs Temperature Offset Voltage vs Input Common Mode Voltage Input Bias Current vs Temperature Input Bias Current vs Input Common Mode Voltage en, in vs Frequency Total Input Noise vs Source Resistance 0.1Hz to 10Hz Noise INPUT OFFSET VOLTAGE (µV) –90 PERCENT OF UNITS (%) –50 –10 10 90

6011 G01

–70 –30 30 50 70 VS = 5V, 0V TA = 25°C LT6011S8, LT6012S TEMPERATURE (°C) –50 –125 OFFSET VOLTAGE (µV) –100 –50 –25 125 0 50 75

6011 G02

–75 100 –25 25 100 125 VS = 5V, 0V REPRESENTATIVE UNITS INPUT COMMON MODE VOLTAGE (V) –15 120 100 –20 01 0

6011 G03

–10 –5 51 5 OFFSET VOLTAGE (µV) TA = 85°C TA = 25°C TA = –40°C VS = –15V TYPICAL PART TEMPERATURE (°C) –50 –200 INPUT BIAS CURRENT (pA) 400 600 800 1600

6011 G05

0–25 75 10025 IB– IB+ 125 1000 1200 1400 VS = 5V, 0V TYPICAL PART COMMON MODE VOLTAGE (V) –15 –200 INPUT BIAS CURRENT (pA)–100 100 200 300 –10 –5 0 5

1635 G06

VS = –15V TYPICAL PART TA = 85°C 13.9V –14.2V TA = 25°C TA = –40°C FREQUENCY (Hz) INPUT VOLTAGE NOISE DENSITY (nV/√Hz) INPUT CURRENT NOISE DENSITY (fA/√Hz) 100 100 1000 10 100 1000

6011 G07

VS = –15V TA = 25°C SOURCE RESISTANCE (Ω ) 100 1k 10k 100k 1M 10M

0.0001 TOTAL INPUT NOISE (µV/√Hz)

0.01 100M

6011 G08

0.001 0.1 TOTAL NOISE RESISTOR NOISE ONLY VS = 5V, 0V TA = 25°C f = 1kHz UNBALANCED SOURCE RESISTORS TIME (SEC) 0 NOISE VOLTAGE (0.2µV/DIV)

6011 G09

VS = –15V TA = 25°C INPUT BIAS CURRENT (pA) –400 PERCENT OF UNITS (%) –300 –100 0 400

6011 G04

–200 100 200 300 VS = 5V, 0V TA = 25°C LT6011A, LT6012A Distribution of Input Bias Current

TYPICAL PERFOR A CE CHARACTERISTICS UW Output Voltage Swing vs Temperature Output Saturation Voltage vs Load Current (Output High) Supply Current vs Supply Voltage Warm-Up Drift THD + Noise vs Frequency THD + Noise vs Frequency Settling Time vs Output Step Output Saturation Voltage vs Load Current (Output Low) TEMPERATURE (°C) –5 0 OUTPUT VOLTAGE SWING (mV) –20

6011 G11

–2 5 0 5 0 –40 –60 75 100 125 VS = 5V, 0V NO LOAD OUTPUT HIGH OUTPUT LOW LOAD CURRENT (mA) 0.01 0.01OUTPUT HIGH SATURATION VOLTAGE (V) 0.1 0.1 1 10

6011 G12

TA = 85°C TA = 25°C VS = 5V, 0V TA = –40°C LOAD CURRENT (mA) 0.01 0.01OUTPUT LOW SATURATION VOLTAGE (V) 0.1 0.1 1 10

6011 G13

TA = 85°C TA = 25°C VS = 5V, 0V TA = –40°C SUPPLY VOLTAGE (–V) SUPPLY CURRENT (µA) 300 400 500

6011 G14

TA = 85°C TA = –40°C TA = 25°C TIME AFTER POWER-ON (SECONDS) CHANGE IN OFFSET VOLTAGE (µV) 30 60 90 120

6011 G15

–15V –2.5V FREQUENCY (Hz)

0.0001 THD + NOISE (%)

0.01 1k 10k100 100k

6011 G16

0.001 0.1 VS = 5V, 0V VOUT = 2VP-P TA = 25°C AV = 1: RL = 10k AV = –1: RF = RG = 10k AV = –1 AV = 1 FREQUENCY (Hz) 0.01 1k 10k100

6011 G17

0.001 0.1 VS = –15V VIN = 20VP-P TA = 25°C AV = –1 AV = 1 SETTLING TIME (µs) OUTPUT STEP (V) 20 40 50 90

6011 G18

VS = –15V AV = 1 0.1% 0.01% 0.01Hz to 1Hz Noise TIME (SEC) 0 NOISE VOLTAGE (0.2µV/DIV)

6011 G10

20 40 60 100 7010 30 50 90 VS = –15V TA = 25°C

TYPICAL PERFOR A CE CHARACTERISTICS UW Channel Separation vs Frequency CMRR vs Frequency PSRR vs Frequency Output Impedance vs Frequency Open-Loop Gain vs Frequency Gain vs Frequency, AV = 1Gain and Phase vs Frequency Gain vs Frequency, AV = –1 FREQUENCY (Hz) 11 0 CHANNEL SEPARATION (dB) 100 120 100 1k 10k 100k 1M

6011 G20

160 VS = 5V, 0V

TA = 25°C FREQUENCY (Hz) 11 0 COMMON MODE REJECTION RATIO (dB) 100 120 100 1k 10k 100k 1M

6011 G21

160 TA = 25°C

VS = –15V VS = 5V, 0V FREQUENCY (Hz) 0.1 POWER SUPPLY REJECTION RATIO (dB) 100 120 140 1 10 100 1k 10k 100k 1M

6011 G22

VS = 5V, 0V TA = 25°C –PSRR +PSRR FREQUENCY (Hz) OUTPUT IMPEDANCE (Ω ) 1000 0.1 100 1 100 1k 10k 100k 1M

6011 G23

0.01 VS = 5V, 0V TA = 25°C AV = 100 AV = 10 AV = 1 FREQUENCY (Hz) 120 100 –20 OPEN-LOOP GAIN (dB) 140 0.01 10 100 1k 10k 100k 1M 10M

6011 G24

–40 0.1 1 VS = 5V, 0V TA = 25°C RL = 10k FREQUENCY (Hz) –10OPEN-LOOP GAIN (dB) PHASE SHIFT (DEG) –2 0 –30 1k 100k 1M 10M

6011 G25

–4 0 –80 – 240 –120 –160 –200 –280 10k PHASE GAIN VS = 5V, 0V TA = 25°C RL = 10k FREQUENCY (Hz) –20 GAIN (dB) 10k 100k 1M

6011 G26

–10 –15 VS = 5V, 0V TA = 25°C CL = 500pF CL = 50pF FREQUENCY (Hz) –20 GAIN (dB) 10k 100k 1M

6011 G27

–10 –15 VS = 5V, 0V TA = 25°C CL = 500pF CL = 50pF Settling Time vs Output Step SETTLING TIME (µs) OUTPUT STEP (V) 20 40 50 90

6011 G19

VS = –15V AV = –1 0.1% 0.01%

Small-Signal Transient Response Large-Signal Transient Response Rail-to-Rail Output Swing 20mV/DIV AV = 1 2 ms/DIV 6011 G28 2V/DIV AV = –1 50 ms/DIV 6011 G29 VS = –15V 1V/DIV AV = –1 100 ms/DIV 6011 G30 VS = 5V, 0V TYPICAL PERFOR A CE CHARACTERISTICS UW Preserving Input Precision Preserving the input accuracy of the LT6011/LT6012 re- quires that the applications circuit and PC board layout do not introduce errors comparable to or greater than the 25mV typical offset of the amplifiers. Temperature differentials across the input connections can generate thermocouple voltages of 10’s of microvolts so the connections to the input leads should be short, close together and away from heat dissipating components. Air currents across the board can also generate temperature differentials. The extremely low input bias currents (20pA typical) allow high accuracy to be maintained with high impedance sources and feedback resistors. The LT6011/LT6012 low input bias currents are obtained by a cancellation circuit on-chip. This causes the resulting I B+ and I B– to be uncorrelated, as implied by the I OS specification being comparable to IB. Do not try to balance the input resistances in each input lead; instead keep the resistance at either input as low as possible for maximum accuracy. Leakage currents on the PC board can be higher than the input bias current. For example, 10GW of leakage between a 15V supply lead and an input lead will generate 1.5nA! Surround the input leads with a guard ring driven to the same potential as the input common mode to avoid exces- sive leakage in high impedance applications. Input Protection The LT6011/LT6012 feature on-chip back-to-back diodes between the input devices, along with 500W resistors in series with either input. This internal protection limits the input current to approximately 10mA (the maximum al- lowed) for a 10V differential input voltage. Use additional external series resistors to limit the input current to 10mA in applications where differential inputs of more than 10V are expected. For example, a 1k resistor in series with each input provides protection against 30V differential voltage. Input Common Mode Range The LT6011/LT6012 output is able to swing close to each power supply rail (rail-to-rail out), but the input stage is limited to operating between V – + 1V and V+ – 1.2V. Exceed- ing this common mode range will cause the gain to drop to zero, however, no phase reversal will occur. Total Input Noise The LT6011/LT6012 amplifier contributes negligible noise to the system when driven by sensors (sources) with impedance between 20k W and 1M W . Throughout this range, total input noise is dominated by the 4kTRS noise of the source. If the source impedance is less than 20kW , the input voltage noise of the amplifier starts to contribute with a minimum noise of 14nV/ÖHz for very low source im- pedance. If the source impedance is more than 1MW , the input current noise of the amplifier, multiplied by this high impedance, starts to contribute and eventually dominate. Total input noise spectral density can be calculated as: v e kTR i Rn TOTAL n S n S() ()=+ + 2 24 APPLICATIO S I FOR ATIOWU UU

impedance at the input, including the source impedance. fies whether or not the op amp must have rail-to-rail inputs.

6011 F01

Figure 1. Some Op Amp Configurations Do Not Require Rail-to-Rail Inputs to Achieve Rail-to-Rail Outputs

8-Lead Plastic DFN (3mm · 3mm) (Reference LTC DWG # 05-08-1698) 3.00 –0.10 (4 SIDES) NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-1) 2. ALL DIMENSIONS ARE IN MILLIMETERS 3. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 4. EXPOSED PAD SHALL BE SOLDER PLATED 0.38 – 0.10 BOTTOM VIEW—EXPOSED PAD 1.65 – 0.10 (2 SIDES) 0.75 –0.05 R = 0.115 TYP 2.38 –0.10 (2 SIDES) PIN 1 TOP MARK

0.200 REF

0.00 – 0.05 (DD8) DFN 0203 0.28 – 0.05 2.38 –0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS 1.65 –0.05 (2 SIDES)2.15 –0.05 0.50 BSC 0.675 –0.05 3.5 –0.05 PACKAGE OUTLINE 0.28 – 0.05

0.50 BSC

8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) .016 – .050 (0.406 – 1.270) .010 – .020 0°– 8° TYP .008 – .010 (0.203 – 0.254) SO8 0303 .053 – .069 (1.346 – 1.752) .014 – .019 (0.355 – 0.483) TYP .004 – .010 (0.101 – 0.254) .050 (1.270) BSC 1 2 3 4 .150 – .157 (3.810 – 3.988) NOTE 3 8 7 6 5 .189 – .197 (4.801 – 5.004) NOTE 3 .228 – .244 (5.791 – 6.197) .245 MIN .160 –.005 RECOMMENDED SOLDER PAD LAYOUT .045 –.005 .050 BSC .030 –.005 TYP INCHES (MILLIMETERS) NOTE: 1. DIMENSIONS IN 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)

14-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) N 2 3 4 .150 – .157 (3.810 – 3.988) NOTE 3 14 13 .337 – .344 (8.560 – 8.738) NOTE 3 .228 – .244 (5.791 – 6.197) 12 11 10 9 5 6 7 N/2 .016 – .050 (0.406 – 1.270) .010 – .020 0° – 8° TYP .008 – .010 (0.203 – 0.254) S14 0502 .053 – .069 (1.346 – 1.752) .014 – .019 (0.355 – 0.483) TYP .004 – .010 (0.101 – 0.254) .050 (1.270) BSC .245 MIN N

123 N / 2

.160 –.005 RECOMMENDED SOLDER PAD LAYOUT .045 –.005 .050 BSC .030 –.005 TYP INCHES (MILLIMETERS) NOTE: 1. DIMENSIONS IN 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)

16-Lead Plastic SSOP (Narrow .150 Inch) (Reference LTC DWG # 05-08-1641) GN16 (SSOP) 0502 12 3 4 5 6 7 8 .229 – .244 (5.817 – 6.198) .150 – .157** (3.810 – 3.988) 16 15 14 13 .189 – .196* (4.801 – 4.978) 12 11 10 9 .016 – .050 (0.406 – 1.270) .015 – .004 (0.178 – 0.249) .053 – .068 (1.351 – 1.727) .008 – .012 (0.203 – 0.305) .004 – .0098 (0.102 – 0.249) .0250 (0.635) BSC .009 (0.229) REF .254 MIN RECOMMENDED SOLDER PAD LAYOUT .150 – .165 .0250 TYP.0165 – .0015 .045 –.005 *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE INCHES (MILLIMETERS) NOTE: 1. CONTROLLING DIMENSION: INCHES 2. DIMENSIONS ARE IN 3. DRAWING NOT TO SCALE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 l FAX: (408) 434-0507 l www.linear.com ª LINEAR TECHNOLOGY CORPORATION 2003 LT/TP 0903 1K REV A • PRINTED IN USA PART NUMBER DESCRIPTION COMMENTS LT1112/LT1114 Dual/Quad Low Power, Picoamp Input Precision Op Amp 250pA Input Bias Current LT1880 Rail-to-Rail Output, Picoamp Input Precision Op Amp SOT-23 LT1881/LT1882 Dual/Quad Rail-to-Rail Output, Picoamp Input Precision Op Amp C LOAD Up to 1000pF LT1884/LT1885 Dual/Quad Rail-to-Rail Output, Picoamp Input Precision Op Amp 9.5nV/ ÖHz Input Noise RELATED PARTS UTYPICAL APPLICATIO Low Power Hall Sensor Amplifier LT1782 1/2 LT6011 VS VS VOUT 7.87k VS = 3V TO 18V IS = ~600µA VOUT = ~40mV/mT 1, 2 10k OFFSET ADJUST 400Ω HALL ELEMENT ASAHI-KASEI HW-108A (RANK D) www.asahi-kasei.co.jp 26.7k 49.9k 49.9k VS

6011 TA02

LT1790-1.25 1/2 LT6011