LT2178/LT2179 - 17μA Max, Dual and Quad, Single Supply, Precision Op Amps
Document overview
- Manufacturer or author: Linear Technology Corporation
- PDF pages: 12
Technical content
DESCRIPTION
17µA Max, Dual and Quad, Single Supply, Precision Op Amps The L T®2178 is a micropower dual op amp in a surface mount standard 8-pin confi guration, the L T2179 is a micropower quad op amp offered in a surface mount 14-pin package. Both devices are optimized for single supply operation at 5V . Specifi cations are also provided at ±15V supply. The extremely low supply current is combined with true precision specifi cations: offset voltage is 30μV and offset current is 50pA. Both offset parameters have low drift with temperature. The 1.5pA P-P current noise and picoampere offset current permit the use the megohm level source resistors without introducing serious errors. Voltage noise, at 0.9μV P-P, is remarkably low considering the low supply current. The L T2178/L T2179 can be operated from a single supply (as low as one lithium-cell or two NiCd batteries). The input range goes below ground. The all-NPN output stage swings to within a few millivolts of ground while sinking current. No power consuming pull down resistors are needed. For surface mount applications where three times higher supply current is acceptable, the micropower L T1077 single, L T2078 dual and L T2079 quad are recommended. The L T1077/L T2078/L T2079 have signifi cantly higher bandwidth, slew rate, lower voltage noise and better output drive capability. For applications requiring DIP packages refer to the L T1178/L T1179. Self-Buffered, Dual Output, Micropower Reference
FEATURES
APPLICATIONS
n SO Package with Standard Pinout n Supply Current per Amplifi er: 17μA Max n Offset Voltage: 70μV Max n Offset Current: 250pA Max n Input Bias Current: 5nA Max n Voltage Noise: 0.9μV P-P, 0.1Hz to 10Hz n Current Noise: 1.5pA P-P, 0.1Hz to 10Hz n Offset Voltage Drift: 0.5μV/°C n Gain Bandwidth Product: 85kHz n Slew Rate: 0.04V/μs n Single Supply Operation Input Voltage Range Includes Ground Output Swings to Ground while Sinking Current No Pull-Down Resistors Needed n Output Sources and Sinks 5mA Load Current n Battery- or Solar-Powered Systems Portable Instrumentation Remote Sensor Amplifi er Satellite Circuitry n Micropower Sample-and-Hold n Thermocouple Amplifi er n Micropower Filters Supply Current vs Temperature 1/2 L T2178 1 0.1μF 250k 1M* 1M*L T1004-1.2 0.1μF 1.2365V OUTPUT 1/2 L T2178 2.470V OUTPUT 4V TO 9V
21789 TA01
TOTAL BATTERY CURRENT = 28mA OUTPUT ACCURACY = p0.4% MAX TEMPERATURE COEFFICIENT = 20ppm/°C LOAD REGULATION = 25ppm/mA, I L ≤ 5mA, V+ ≥ 5V LINE REGULATION = 10ppm/V * 0.1% FILM RESISTORS TEMPERATURE (°C) –50 SUPPLY CURRENT PER AMPLIFIER A) –25 0 25 50
21789 TA02
VS = p15V VS = 5V, 0V VS = p1.5V L, L T , L TC, L TM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE L T2178ACS8#PBF L T2178ACS8#TRPBF 2178A 8-Lead Plastic SO 0°C to 70°C L T2178AIS8#PBF L T2178AIS8#TRPBF 2178AI 8-Lead Plastic SO –40°C to 85°C L T2178CS8#PBF L T2178CS8#TRPBF 2178 8-Lead Plastic SO 0°C to 70°C L T2178IS8#PBF L T2178IS8#TRPBF 2178I 8-Lead Plastic SO –40°C to 85°C L T2179ACS#PBF L T2179ACS#TRPBF 2179A 14-Lead Plastic SO 0°C to 70°C L T2179CS#PBF L T2179CS#TRPBF 2179 14-Lead Plastic SO 0°C to 70°C L T2179IS#PBF L T2179IS#TRPBF 2179I 14-Lead Plastic SO –40°C to 85°C LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE L T2178ACS8 L T2178ACS8#TR 2178A 8-Lead Plastic SO 0°C to 70°C L T2178AIS8 L T2178AIS8#TR 2178AI 8-Lead Plastic SO –40°C to 85°C L T2178CS8 L T2178CS8#TR 2178 8-Lead Plastic SO 0°C to 70°C L T2178IS8 L T2178IS8#TR 2178I 8-Lead Plastic SO –40°C to 85°C L T2179ACS L T2179ACS#TR 2179A 14-Lead Plastic SO 0°C to 70°C L T2179CS L T2179CS#TR 2179 14-Lead Plastic SO 0°C to 70°C L T2179IS L T2179IS#TR 2179I 14-Lead Plastic SO –40°C to 85°C Consult L TC Marketing for parts specifi ed with wider operating temperature ranges. For more information on lead free part marking, go to: http://www.linear .com/leadfree/ For more information on tape and reel specifi cations, go to: http://www.linear .com/tapeandreel/ TOP VIEW OUT B –IN B +IN B OUT A –IN A +IN A V S8 PACKAGE 8-LEAD PLASTIC SO A B TJMAX = 150°C, θJA = 190°C/W 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 + D B C TJMAX = 150°C, θJA = 150°C/W PIN CONFIGURATION Specifi ed Temperature Range
ELECTRICAL CHARACTERISTICS V S = 5V , 0V , VCM = 0.1V , VO = 1.4V , TA = 25°C, unless otherwise noted. SYMBOL PARAM ETER CONDITIONS L T2178AC/L T2178AI L T2179AC L T2178C/L T2178I L T2179C/L T2179I UNITSMIN TYP MAX MIN TYP MAX VOS Input Offset Voltage L T2178 L T2179 100 120 150 μV μV ΔVOS ΔTime Long Term Input Offset Voltage Stability 0.5 0.6 μV/Mo IOS Input Offset Current 0.05 0.25 0.05 0.35 nA IB Input Bias Current 3 5 3 6 nA en Input Noise Voltage 0.1Hz to 10Hz (Note 2) 0.9 2.0 0.9 μV P-P Input Noise Voltage Density f O = 10Hz (Note 2) fO = 1000Hz (Note 2) nV√Hz nV√Hz in Input Noise Current 0.1Hz to 10Hz (Note 2) 1.5 2.5 1.5 pA P-P Input Noise Current Density f O = 10Hz (Note 2) fO = 1000Hz 0.03 0.01 0.07 0.03 0.01 pA√Hz pA√Hz Input Resistance Differential Mode Common Mode (Note 3) 0.8 2 0.6 2 GΩ GΩ Input Voltage Range 3.5 3.9 –0.3 3.5 3.9 –0.3 V V CMRR Common Mode Rejection Ratio V CM = 0V to 3.5V 93 103 90 102 dB PSRR Power Supply Rejection Ratio V S = 2.2V to 12V 94 104 92 104 dB AVOL Large-Signal Voltage Gain V O = 0.03V to 4V , No Load (Note 3) VO = 0.03V to 3.5V , RL = 50k 140 700 200 110 700 200 V/mV V/mV Maximum Output Voltage Swing Output Low, No Load Output Low, 2k to GND Output Low, I SINK = 100μA 6.5 0.2 120 0.6 160 6.5 0.2 120 0.6 160 mV mV mV Output High, No Load Output High, 2k to GND 4.2 3.5 4.4 3.8 4.2 3.5 4.4 3.8 V V SR Slew Rate A V = 1, CL = 10pF (Note 3) 0.013 0.025 0.013 0.025 V/μs GBW Gain Bandwidth Product f O ≤ 5kHz 60 60 kHz IS Supply Current per Amplifi er VS = ±1.5V , VO = 0V μA μA Channel Separation ΔVIN = 3V , RL = 10k 110 110 dB Minimum Supply Voltage (Note 4) 2 2.2 2 2.2 V SYMBOL PARAM ETER CONDITIONS L T2178AI L T2178I/L T2179I UNITSMIN TYP MAX MIN TYP MAX VOS Input Offset Voltage L T2178 L T2179 l l 270 300 100 370 400 μV μV ΔVOS ΔT Input Offset Voltage Drift L T2178 (Note 5) L T2179 l 0.4 0.5 1.8 0.5 0.6 2.3 3.5 μV/ºC μV/ºC I OS Input Offset Current l 0.07 0.70 0.1 1 nA IB Input Bias Current l 37 48 n A CMRR Common Mode Rejection Ratio V CM = 0.05V to 3.2V l 86 100 84 98 dB PSRR Power Supply Rejection Ratio V S = 3V to 12V l 88 100 86 100 dB The l denotes the specifi cations which apply over the full operating temperature range. VS = 5V , 0V , VCM = 0.1V , VO = 1.4V , –40°C ≤ TA ≤ 85°C for I-grades, unless otherwise noted. (Note 6)
SYMBOL PARAM ETER CONDITIONS L T2178AI L T2178I/L T2179I UNITSMIN TYP MAX MIN TYP MAX AVOL Large-Signal Voltage Gain V O = 0.05V to 4V , No Load (Note 3) VO = 0.05V to 3.5V , RL = 50k l l 350 130 350 130 V/mV V/mV Maximum Output Voltage Swing Output Low, No Load Output Low, ISINK = 100μA l l 160 220 160 220 mV mV Output High, No Load Output High, 2k to GND l l 3.9 4.2 3.7 3.9 4.2 3.7 V V IS Supply Current per Amplifi er l 15 24 15 27 μA The l denotes the specifi cations which apply over the full operating temperature range. VS = 5V , 0V , VCM = 0.1V , VO = 1.4V , –40°C ≤ TA ≤ 85°C for I-grades, unless otherwise noted. (Note 6) SYMBOL PARAM ETER CONDITIONS L T2178AC/L T2179AC L T2178C/L T2179C UNITSMIN TYP MAX MIN TYP MAX VOS Input Offset Voltage L T2178 L T2179 l l 170 200 250 290 V/mV V/mV ΔVOS ΔT Input Offset Voltage Drift L T2178 (Note 5) L T2179 l l 0.4 0.5 1.8 0.5 0.6 2.5 3.5 mV mV IOS Input Offset Current l 0.06 0.35 0.06 0.5 nA IB Input Bias Current l 36 37 n A CMRR Common Mode Rejection Ratio V CM = 0V to 3.4V l 90 101 86 100 dB PSRR Power Supply Rejection Ratio V S = 2.5V to 12V l 90 102 88 102 dB AVOL Large-Signal Voltage Gain V O = 0.05V to 4V , No Load (Note 3) VO = 0.05V to 3.5V , RL = 50k l l 150 500 160 500 160 V/mV V/mV Maximum Output Voltage Swing Output Low, No Load Output Low, ISINK = 100μA l l 140 190 140 190 mV mV Output High, No Load Output High, 2k to GND l l 4.1 3.3 4.3 3.8 4.1 3.3 4.3 3.8 V V The l denotes the specifi cations which apply over the full operating temperature range. VS = 5V , 0V , VCM = 0.1V , VO = 1.4V , 0°C ≤ TA ≤ 70°C, unless otherwise noted. (Note 7) VS = ±15V , TA = 25°C, unless otherwise noted. SYMBOL PARAM ETER CONDITIONS L T2178AC/L T2178AI L T2179AC L T2178C/L T2178I L T2179C/L T2179I UNITSMIN TYP MAX MIN TYP MAX VOS Input Offset Voltage L T2178 L T2179 300 350 100 400 450 μV μV IOS Input Offset Current 0.05 0.25 0.05 0.35 nA IB Input Bias Current 3 5 3 6 nA Input Voltage Range 13.5 –15 13.9 –15.3 13.5 –15 13.9 –15.3 V V CMRR Common Mode Rejection Ratio V CM = 13.5V to –15V 96 106 93 106 dB PSRR Power Supply Rejection Ratio VS = 5V , 0V to ±18V 96 112 94 112 dB AVOL Large-Signal Voltage Gain VO = ±10V , RL = 50k VO = ±10V , No Load 300 600 1200 2500 250 400 1000 2500 V/mV V/mV VOUT Maximum Output Voltage Swing R L = 50k RL = 2k ±13 ±11 ±14.2 ±12.7 ±13 ±11 ±14.2 ±12.7 V V SR Slew Rate A V = 1 0.02 0.04 0.02 0.04 V/μs
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating temperature range. VS = ±15V , –40°C ≤ TA ≤ 85°C for I-grades, unless otherwise noted. SYMBOL PARAM ETER CONDITIONS L T2178AI L T2178I/L T2179I UNITSMIN TYP MAX MIN TYP MAX VOS Input Offset Voltage L T2178 L T2179 l l 100 100 650 650 130 130 740 740 μV μV ΔVOS ΔT Input Offset Voltage Drift L T2178 (Note 5) L T2179 l 0.6 0.7 1.8 0.7 0.9 2.5 μV/ºC μV/ºC I OS Input Offset Current l 0.07 0.7 0.1 1 nA IB Input Bias Current l 37 48 n A AVOL Large-Signal Voltage Gain VO = ±10V , RL = 50k l 150 500 100 500 V/mV CMRR Common Mode Rejection Ratio V CM = 13V , –14.9V l 90 105 88 103 dB PSRR Power Supply Rejection Ratio VS = 0V , 5V to ±18V l 92 110 88 109 dB Maximum Output Voltage Swing R L = 5k l ±11 ±13.5 ±11 ±13.5 V IS Supply Current per Amplifi er l 18 28 19 30 μA SYMBOL PARAM ETER CONDITIONS L T2178AC/L T2179AC L T2178C/L T2179C UNITSMIN TYP MAX MIN TYP MAX VOS Input Offset Voltage L T2178 L T2179 l l 100 120 480 550 130 150 660 750 μV μV ΔVOS ΔT Input Offset Voltage Drift L T2178 (Note 5) L T2179 l 0.6 0.7 1.5 0.7 0.9 2.5 μV/ºC μV/ºC I OS Input Offset Current l 0.06 0.35 0.06 0.35 nA IB Input Bias Current l 36 37 n A AVOL Large-Signal Voltage Gain VO = ±10V , RL = 50k l 200 800 150 750 V/mV CMRR Common Mode Rejection Ratio V CM = 13V , –15V l 94 104 91 104 dB PSRR Power Supply Rejection Ratio R L = 5k l 93 110 91 110 dB Maximum Output Voltage Swing R L = 5k l ±11 ±13.6 ±11 ±13.6 V IS Supply Current per Amplifi er l 17 24 18 28 μA The l denotes the specifi cations which apply over the full operating temperature range. VS = ±15V , 0°C ≤ TA ≤ 70°C, unless otherwise noted. Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: Typical parameters are defi ned as the 60% yield of parameter distributions of individual amplifi ers, i.e., out of 100 L T2179s (or 100 L T2178s) typically 240 op amps (or 120) will be better than the indicated specifi cation. Note 3: This parameter is tested on a sample basis only. All noise parameters are tested with V Note 4: This parameter is guaranteed by design and is not tested. Note 5: Power supply rejection ratio is measured at the minimum supply voltage. The op amps actually work at 1.7V supply but with a typical offset skew of –300μV . Note 6: This parameter is not 100% tested. Note 7: During testing at –40°C, the 5V power supply turn-on time is less than 0.5s. Note 8: The L T2178C/L T2179C are designed, characterized and expected to meet the industrial temperature limits, but are not tested at –40°C and 85°C. I-grade parts are guaranteed. The l denotes the specifi cations which apply over the full operating temperature range. VS = 5V , 0V , VCM = 0.1V , VO = 1.4V , –40°C ≤ TA ≤ 85°C for I-grades, unless otherwise noted. (Note 6) SYMBOL PARAM ETER CONDITIONS L T2178AC/L T2178AI L T2179AC L T2178C/L T2178I L T2179C/L T2179I UNITSMIN TYP MAX MIN TYP MAX GBW Gain Bandwidth Product f O ≤ 5kHz 85 85 kHz IS Supply Current per Amplifi er 16 21 17 25 μA
TYPICAL PERFORMANCE CHARACTERISTICS OFFSET VOL TAGE (μV) –150 NUMBER OF OP AMPS200 400 600 800 –100 –50 0 50
21789 G01
VS = 5V, 0V TA = 25°C
2500 OP AMPS
POSITIVE SUPPLY VOLTAGE (V) OFFSET VOLTAGE SHIFT (μV) 100 –100 –200 –300 –400 –500
21789 G02
V– = 0V NONFUCTIONAL –40°C 25°C 85°C TEMPERATURE (°C) –50 25 75
21789 G03
–2.5 –3.0 –25 0 50 100 –3.5 –4.0 INPUT OFFSET CURRENT (pA) INPUT BIAS CURRENT (nA) 100 IOS IB VS = 5V, 0V TEMPERATURE (°C) SATURATION VOLTAGE (mV) 1000 100 0.1 –50 0 25 50 75 100
21789 G04
–25 ISINK = 1mA ISINK = 100μA ISINK = 1μA NO LOAD 10k TO GROUND 2k TO GROUND VS = 5V, 0V TIME FROM OUTPUT SHORT TO GROUND (MINUTES) SHORT CIRCUIT CURRENT (mA) SINKING SOURCING –10 –20 –30
21789 G05
VS = p15V VS = p15V VS = p2.5V VS = p2.5VVS = 5V, 0V TIME (SECONDS) NOISE VOLTAGE (0.4μV/DIV) 2 468 10 12 CHANNEL A CHANNEL B TA = 25°C, VS = p2.5V
21789 G06
TIME (SECONDS) NOISE VOLTAGE (0.4μV/DIV) 20 40 60 80
21789 G07
TA = 25°C, VS = p2.5V FREQUENCY (Hz) 0.1 VOL TAGE NOISE DENSITY (nVHz) CURRENT NOISE DENSITY (fAHz) 100 300 1000 1 1000 10010
21789 G08
TA = 25°C VS = p2.5V CURRENT NOISE VOLTAGE NOISE 1/f CORNER 0.5Hz FREQUENCY (Hz) 0.001 VOLTAGE GAIN (dB) 100k
217879 G09
0.1 10 1k0.01 1M 1 100 10k 140 120 100 –20 VS = p15V VS = 5V, 0V TA = 25°C Output Saturation vs Temperature vs Sink Current Short-Circuit Current 0.1Hz to 10Hz Noise 0.01Hz to 10Hz Noise Noise Spectrum Voltage Gain vs Frequency Distribution of Input Offset Voltage Minimum Supply Voltage Input Bias and Offset Currents vs Temperature
TYPICAL PERFORMANCE CHARACTERISTICS FREQUENCY (Hz) –10 100k
21789 G10
VOLTAGE GAIN (dB) PHASE SHIFT (DEG) 10k 1M 100 120 140 160 180 200 220 240 TA = 25°C NO LOADPHASE p15V PHASE 5V, 0V, GAIN 5V, 0V GAIN p15V LOAD RESISTANCE TO GROUND (Ω) 10k 10k VOLTAGE GAIN (V/V)100k 10M 100k 1M 10M
217879 G11
VS = p15V, TA = 25°C VS = 5V, 0V, TA = 25°C VS = 5V, 0V, TA = 85°C CAPACITIVE LOAD (pF) OVERSHOOT (%) 120 100 100 1000 10000
20789 G12
VS = 5V, 0V AV = 1 AV = 5 AV = 10
21789 G13
500μs/DIVAV = 1 CL = 12pF
21789 G14
100μs/DIVAV = 1 CL = 12pF INPUT PULSE = 0V TO 3.8V
21789 G15
20μs/DIVAV = 1 CL = 12pF
21789 G16
20μs/DIVAV = 1 CL = 12pF
21789 G17
20μs/DIVAV = 1 CL = 12pF INPUT PULSE = 50mV TO 150mV FREQUENCY (Hz) COMMON MODE REJECTION RATIO (dB) 120 100 10 100 1k 10k
21789 G18
TA = 25°C VS = 5V, 0V VS = p15V Large-Signal T ransient Response VS = ±15V Large-Signal T ransient Response VS = 5V , 0V Small-Signal T ransient Response VS = ±2.5V Small-Signal T ransient Response VS = ±15V Small-Signal T ransient Response VS = 5V , 0V Common Mode Rejection Ratio vs Frequency Gain, Phase vs Frequency Voltage Gain vs Load Resistance Capacitive Load Handling
TYPICAL PERFORMANCE CHARACTERISTICS OPERATING FREQUENCY (Hz) 0.1 PSRR (dB) 120 100 1 10 100 1k
21789 G19
TA = 25°C VS = p2.5V + 1VP-P SINE WAVE NEGATIVE SUPPLY POSITIVE SUPPLY FREQUENCY (Hz) OUTPUT IMPEDANCE (Ω) 100 10k 100 1k
21789 G20
ACL = 100 ACL = 10 ACL = 1 TA = 25°C VS = 5V, 0V IL = 0 Power Supply Rejection Ratio vs Frequency Closed Loop Output Impedance SIMPLIFIED SCHEMATIC 1/2 L T2178 1/4 L T2179 10k 10k 2.2k 5.6k Q5 Q6 Q11 600Ω 600Ω Q21 Q22 175pF 6.2k Q28 Q12 Q16 Q14 Q29 Q4 Q24 8.6k C1 50pF 2.5pFQ27 Q10 Q17 6.2k Q19 Q18 Q15 Q32 1.3k 6.4k Q37 Q30 1 3 Q25 4pF 2.9k Q31C3 40pF Q23 Q20 3k 30Ω Q34 Q36 OUT Q26 30Ω Q35 33k Q54 1 1 2 150k Q33 10k Q38 5.35k Q45 Q55 Q51 Q42 Q44 Q46 Q47 11.5k 12.5k Q40 Q41 Q48 9.1k Q43 700k 700k 21789 SS IN– IN+ Q50 Q49 Q39 Q53 Q52
Please see the L T2078/L T2079 data sheet for applications information. All comments relating to specifi cations, single APPLICATIONS INFORMATION supply operation and phase reversal protection are directly applicable to the L T2178/L T2179. + + VIN 0V TO 5V 220k* 50k 1MHz TRIM 100Hz TRIM 240k TYP 2μF 0.33μF 0.022μF 500pF POL YSTYRENE 3pF 0.01μF 47k Q8 2N3906 12k 1.5M NC 2N3904 74C14 1N1 1N3 1N4 1N2 GND FOUT RESET V SS VDD CLK Q7CD4024 1μF 1N4148 1μF 100Ω A2 1/2 LT2178 10k 7V TO 10V 100k LT1004-2.5 LTC®201 1/2 LT2178
21789 TA03
LINEARITY IS 0.02% QUIESCENT CURRENT IS 90μA SUPPLY CURRENT IS 360μA AT 1MHz DRIFT = 50ppm/°C *TRWMTR/5 + 120ppm/°C Micropower 100Hz to 1MHz V-to-F Converter
14-Lead Plastic Small Outline (Narrow 0.150) (Reference L TC DWG # 05-08-1610) PACKAGE DESCRIPTION 8-Lead Plastic Small Outline (Narrow 0.150) (Reference L TC DWG # 05-08-1610) .016 – .050 (0.406 – 1.270) .010 – .020 (0.254 – 0.508)s 45o 0o– 8o 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 p.005 RECOMMENDED SOLDER PAD LAYOUT .045 p.005 .050 BSC .030 p.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) 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 (0.254 – 0.508)s 45o 0o – 8o 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 1 2 3 N/2 .160 p.005 RECOMMENDED SOLDER PAD LAYOUT .045 p.005 .050 BSC .030 p.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)
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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
REVISION HISTORY
REV DATE DESCRIPTION PAGE NUMBER C 3/10 Correct the part numbers on S Package in the Order Information Section. 2 Update to graph G04 6 (Revision history begins at Rev C)
Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear .com © LINEAR TECHNOLOGY CORPORATION 1996 LT 0310 REV C • PRINTED IN USA RELATED PARTS TYPICAL APPLICATION PART NUMBER DESCRIPTION COMMENTS L T1078/L T1079 Dual/Quad 55μA Max, Single Supply Precision Op Amps 70μV V OS Max and 2.5μV/°C Drift Max, 200kHz BBW , 0.07V/μs Slew Rate, Input/Output Common Mode Includes Ground L T1211/L T1212 14MHz, 7V/μs Single Supply Dual and Quad Precision Op Amps 275μV V OS Max, 6μV/°C Drift Max Input Voltage Range Includes Ground L T1490/L T1491 Dual/ Quad Micropower Rail-to-Rail Input and Output Op Amps Single Supply Input Range: –0.4V to 44V , Micropower 50μ A Amplifi er , Rail-to-Rail Input and Output, 200kHz GBW L T2078/L T2079 Dual/Quad 55μA Max, Single Supply Precision Op Amps 70μV V OS Max and 2.5μV/°C Drift Max, 200kHz BBW , 0.07V/μs Slew Rate, Input/Output Common Mode Includes Ground Surface Mount Standard Pinout 301k 50k 1000pF
21789 TA04
1μF 86k VIN 50k LT2179 – LT2179 301k 121k LT2179 1000pF 1000pF 221k 1000pF LT2179 3.3V 121k 12-BIT ACCURATE SIGNAL RANGE FROM 6mV TO 1.8V ON 3.3V SINGLE SUPPLY. MAXIMUM OUTPUT OFFSET ERROR IS 448μV. FOR EACH 2ND ORDER SECTION: WO2 = 1 C1C2R1R2 R1 = 1 WOQC1 R2 = Q WOC2 Single Supply, 1kHz, 4th Order Butterworth Lowpass Filter FREQUENCY (kHz) 0.1 GAIN(dB) –10 –20 –30 –40 –50 –60 –70 –80 –90 11 0