ADR127BUJZ AD | Alldatasheet

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Precision, Micropower LDO Voltage References in TSOT ADR121/ADR125/ADR127 Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2006–2008 Analog Devices, Inc. All rights reserved.

FEATURES

A grade: ±0.24% B grade: ±0.12% Maximum temperature coefficient A grade: 25 ppm/°C B grade: 9 ppm/°C Low dropout: 300 mV for ADR121/ADR125 High output current: +5 mA/−2 mA Low typical operating current: 85 μA Input range: 2.7 V to 18 V for ADR127 Temperature range: −40°C to +125°C Tiny TSOT (UJ-6) package

APPLICATIONS

Battery-powered instrumentation Portable medical equipment Data acquisition systems Automotive PIN CONFIGURATION NC1 1 GND 2 VIN 3 NC16 VOUT4 NC1

1 MUST BE LEFT FLOATING

NC = NO CONNECT ADR12x TOP VIEW (Not to Scale) 05725-001 Figure 1. GENERAL DESCRIPTION The ADR121/ADR125/ADR127 are a family of micropower, high precision, series mode, band gap references with sink and source capability. The parts feature high accuracy and low power consumption in a tiny package. The ADR12x design includes a patented temperature-drift curvature correction technique that minimizes the nonlinearities in the output voltage vs. temperature characteristics. The ADR12x is a low dropout voltage reference, requiring only 300 mV for the ADR121/ADR125 and 1.45 V for the ADR127 above the nominal output voltage on the input to provide a stable output voltage. This low dropout performance, coupled with the low 85 μA operating current, makes the ADR12x ideal for battery-powered applications. Available in an extended industrial temperature range of −40°C to +125°C, the ADR121/ADR125/ADR127 are housed in the tiny TSOT (UJ-6) package.

Rev. B | Page 2 of 20 TABLE OF CONTENTS Negative Precision Reference Without Precision Resistors .. 17

REVISION HISTORY

1/08—Rev. A to Rev. B 5/07—Rev. 0 to Rev. A 6/06—Revision 0: Initial Version

Rev. B | Page 3 of 20 SPECIFICATIONS ADR121 ELECTRICAL CHARACTERISTICS TA = 25°C, VIN = 2.8 V to 18 V , IOUT = 0 mA, unless otherwise noted. Table 1. Parameter Symbol Conditions/Comments Min Typ Max Unit OUTPUT VOLTAGE VOUT B Grade 2.497 2.5 2.503 V A Grade 2.494 2.5 2.506 V INITIAL ACCURACY ERROR VOERR B Grade −0.12 +0.12 % A Grade −0.24 +0.24 % TEMPERATURE COEFFICIENT TCVOUT −40°C < T A < +125°C B Grade 3 9 ppm/°C A Grade 15 25 ppm/°C DROPOUT (VOUT − VIN) V DO I OUT = 0 mA 300 mV LOAD REGULATION −40°C < TA < +125°C; VIN = 5.0 V, 0 mA < IOUT < 5 mA 80 300 ppm/mA −2 mA < IOUT < 0 mA 50 300 ppm/mA LINE REGULATION 2.8 V to 18 V, IOUT = 0 mA −50 +3 +50 ppm/V PSRR f = 60 Hz −90 dB QUIESCENT CURRENT IQ −40°C < TA < +125°C, no load VIN = 18 V 95 125 μA VIN = 2.8 V 80 95 μA SHORT-CIRCUIT CURRENT TO GROUND VIN = 2.8 V 18 mA VIN = 18 V 40 mA VOLTAGE NOISE f = 10 kHz 500 nV/√Hz f = 0.1 Hz to 10 Hz 18 μV p-p TURN-ON SETTLING TIME To 0.1%, CL = 0.2 μF 100 μs LONG-TERM STABILITY 1000 hours @ 25°C 150 ppm/1000 hrs OUTPUT VOLTAGE HYSTERESIS See the Terminology section 300 ppm

Rev. B | Page 4 of 20 ADR125 ELECTRICAL CHARACTERISTICS TA = 25°C, VIN = 5.3 V to 18 V , IOUT = 0 mA, unless otherwise noted. Table 2. Parameter Symbol Conditions/Comments Min Typ Max Unit OUTPUT VOLTAGE VOUT B Grade 4.994 5.0 5.006 V A Grade 4.988 5.0 5.012 V INITIAL ACCURACY ERROR VOERR B Grade −0.12 +0.12 % A Grade −0.24 +0.24 % TEMPERATURE COEFFICIENT TCVOUT −40°C < T A < +125°C B Grade 3 9 ppm/°C A Grade 15 25 ppm/°C DROPOUT (VOUT − VIN) V DO I OUT = 5 mA 300 mV LOAD REGULATION −40°C < TA < +125°C; VIN = 6.0 V, 0 mA < IOUT < 5 mA 35 200 ppm/mA −2 mA < IOUT < 0 mA 35 200 ppm/mA LINE REGULATION 5.3 V to 18 V, IOUT = 0 mA 30 ppm/V PSRR f = 60 Hz −90 dB QUIESCENT CURRENT IQ −40°C < T A < +125°C, no load VIN = 18 V 95 125 μA VIN = 5.3 V 80 95 μA SHORT-CIRCUIT CURRENT TO GROUND VIN = 5.3 V 25 mA VIN = 18 V 40 mA VOLTAGE NOISE f = 10 kHz 900 nV/√Hz f = 0.1 Hz to 10 Hz 36 μV p-p TURN-ON SETTLING TIME To 0.1%, CL = 0.2 μF 100 μs LONG-TERM STABILITY 1000 hours @ 25°C 150 ppm/1000 hrs OUTPUT VOLTAGE HYSTERESIS See the Terminology section 300 ppm

Rev. B | Page 5 of 20 ADR127 ELECTRICAL CHARACTERISTICS TA = 25°C, VIN = 2.7 V to 18 V , IOUT = 0 mA, unless otherwise noted. Table 3. Parameter Symbol Conditions/Comments Min Typ Max Unit OUTPUT VOLTAGE VOUT B Grade 1.2485 1.25 1.2515 V A Grade 1.2470 1.25 1.2530 V INITIAL ACCURACY ERROR VOERR B Grade −0.12 +0.12 % A Grade −0.24 +0.24 % TEMPERATURE COEFFICIENT TCVOUT −40°C < T A < +125°C B Grade 3 9 ppm/°C A Grade 15 25 ppm/°C DROPOUT (VOUT − VIN) V DO I OUT = 0 mA 1.45 V LOAD REGULATION −40°C < TA < +125°C; VIN = 3.0 V, 0 mA < IOUT < 5 mA 85 400 ppm/mA −2 mA < IOUT < 0 mA 65 400 ppm/mA LINE REGULATION 2.7 V to 18 V, IOUT = 0 mA 30 90 ppm/V PSRR f = 60 Hz −90 dB QUIESCENT CURRENT IQ −40°C < TA < +125°C, no load VIN = 18 V 95 125 μA VIN = 2.7 V 80 95 μA SHORT-CIRCUIT CURRENT TO GROUND VIN = 2.7 V 15 mA VIN = 18 V 30 mA VOLTAGE NOISE f = 10 kHz 300 nV/√Hz f = 0.1 Hz to 10 Hz 9 μV p-p TURN-ON SETTLING TIME To 0.1%, CL = 0.2 μF 80 μs LONG-TERM STABILITY 1000 hours @ 25°C 150 ppm/1000 hrs OUTPUT VOLTAGE HYSTERESIS See the Terminology section 300 ppm

Rev. B | Page 6 of 20 ABSOLUTE MAXIMUM RATINGS Table 4. Parameter Rating VIN to GND 20 V Internal Power Dissipation TSOT (UJ-6) 40 mW Storage Temperature Range −65°C to +150°C Operating Temperature Range −40°C to +125°C Lead Temperature, Soldering Vapor Phase (60 sec) 215°C Infrared (15 sec) 220°C THERMAL RESISTANCE θJA is specified for the worst-case conditions, that is, a device soldered in a circuit board for surface-mount packages. Table 5. Package Type θJA θ JC Unit 6-Lead TSOT (UJ-6) 230 146 °C/W ESD CAUTION Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Rev. B | Page 15 of 20 TERMINOLOGY Temperature Coefficient The change in output voltage with respect to operating temperature change normalized by the output voltage at 25°C. This parameter is expressed in ppm/°C and can be determined as follows: [] () () () ( ) 610C 25C ppm/ ×− × ° −= ° 1 2OUT

1 OUT2UTO

T V T VTCV (1) where: VOUT(25°C) = VOUT at 25°C. VOUT(T1) = VOUT at Temperature 1. VOUT(T2) = VOUT at Temperature 2. Line Regulation The change in the output voltage due to a specified change in input voltage. This parameter accounts for the effects of self-heating. Line regulation is expressed in percent per volt, parts-per-million per volt, or microvolts per voltage change in input voltage. Load Regulation The change in output voltage due to a specified change in load current. This parameter accounts for the effects of self-heating. Load regulation is expressed in microvolts per milliampere, parts-per-million per milliampere, or ohms of dc output resistance. Long-T erm Stability Typical shift of output voltage at 25°C on a sample of parts subjected to a test of 1000 hours at 25°C. ( )( ) [] () () 610ppm ×−=Δ

0 OUT

1 OUT0 OUT

(2) where: VOUT(t0) = VOUT at 25°C at Time 0. VOUT(t1) = VOUT at 25°C after 1000 hours operating at 25°C. Thermal Hysteresis The change in output voltage after the device is cycled through temperatures from +25°C to −40°C to +125°C and back to +25°C. This is a typical value from a sample of parts put through such a cycle. ( ) TC OUTOUTHYS OUT VVV __ C 25− °= (3) [] () _ 10C 25 C 25ppm ×° − °= OUT TC OUTUTO HYS OUT V VVV where: VOUT(25°C) = VOUT at 25°C. VOUT_TC = VOUT at 25°C after temperature cycle at +25°C to −40°C to +125°C and back to +25°C.

Rev. B | Page 16 of 20 THEORY OF OPERATION The ADR12x band gap references are the high performance solution for low supply voltage and low power applications. The uniqueness of these products lies in their architecture. POWER DISSIPATION CONSIDERATIONS The ADR12x family is capable of delivering load currents up to 5 mA with an input range from 3.0 V to 18 V . When this device is used in applications with large input voltages, care must be taken to avoid exceeding the specified maximum power dissipation or junction temperature because this could result in premature device failure. Use the following formula to calculate a device’s maximum junction temperature or dissipation: JA AJ D θ T T P = (4) where: T J is the junction temperature. TA is the ambient temperature. PD is the device power dissipation. θJA is the device package thermal resistance. INPUT CAPACITOR Input capacitors are not required on the ADR12x. There is no limit for the value of the capacitor used on the input, but a 1 μF to 10 μF capacitor on the input may improve transient response in applications where there is a sudden supply change. An additional 0.1 μF capacitor in parallel also helps reduce noise from the supply. OUTPUT CAPACITOR The ADR12x requires a small 0.1 μF capacitor for stability. Additional 0.1 μF to 10 μF capacitance in parallel can improve load transient response. This acts as a source of stored energy for a sudden increase in load current. The only parameter affected with the additional capacitance is turn-on time.

Rev. B | Page 18 of 20 OUTLINE DIMENSIONS 4 5

2.90 BSC

1.60 BSC 2.80 BSC 1.90 BSC

0.95 BSC

0.20 0.08 0.50 0.30

0.10 MAX

*0.90 0.87

0.84 SEATING

*1.00 MAX 0.60 0.45 0.30 PIN 1 INDICATOR *COMPLIANT TO JEDEC STANDARDS MO-193-AA WITH THE EXCEPTION OF PACKAGE HEIGHT AND THICKNESS. Figure 53. 6-Lead Thin Small Outline Transistor Package [TSOT]

Description

mV ±% ADR121AUJZ-REEL71 2.5 2.5 0.24 25 −40°C to +125°C 6-Lead TSOT UJ-6 3,000 R0N ADR121AUJZ-R21 2.5 2.5 0.24 25 −40°C to +125°C 6-Lead TSOT UJ-6 250 R0N ADR121BUJZ-REEL71 2.5 2.5 0.12 9 −40°C to +125°C 6-Lead TSOT UJ-6 3,000 R0P ADR125AUJZ-REEL71 5.0 5.0 0.24 25 −40°C to +125°C 6-Lead TSOT UJ-6 3,000 R0Q ADR125AUJZ-R21 5.0 5.0 0.24 25 −40°C to +125°C 6-Lead TSOT UJ-6 250 R0Q ADR125BUJZ-REEL71 5.0 5.0 0.12 9 −40°C to +125°C 6-Lead TSOT UJ-6 3,000 R0R ADR127AUJZ-REEL71 1.25 3 0.24 25 −40°C to +125°C 6-Lead TSOT UJ-6 3,000 R0S ADR127AUJZ-R21 1.25 3 0.24 25 −40°C to +125°C 6-Lead TSOT UJ-6 250 R0S ADR127BUJZ-REEL71 1.25 1.5 0.12 9 −40°C to +125°C 6-Lead TSOT UJ-6 3,000 R0T 1 Z = RoHS Compliant Part.

Rev. B | Page 19 of 20 NOTES

Rev. B | Page 20 of 20 NOTES ©2006–2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the prop erty of their respective owners. D05725-0-1/08(B)