ADR292GRUZ

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Technical content

Low Noise Micropower 2.5 V and

4.096 V Precision Voltage References

Rev. F 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 ©2007–2011 Analog Devices, Inc. All rights reserved.

FEATURES

2.8 V to 15 V, ADR291

4.4 V to 15 V, ADR292

Supply current: 15 μA maximum Low noise: 8 μV and 12 μV p-p (0.1 Hz to 10 Hz) High output current: 5 mA Temperature range: −40°C to +125°C Pin-compatible with REF02/REF19x

APPLICATIONS

Precision reference for 3 V and 5 V systems Analog-to-digital and digital-to-analog converter reference Solar-powered applications Loop-current-powered instruments CONNECTION DIAGRAMS NC 1 VIN 2 NC 3 GND 4 NC8 NC7 VOUT6 NC5 NC = NO CONNECT ADR291/ ADR292 TOP VIEW (Not to Scale) 00163-001 Figure 1. 8-Lead SOIC (R-8) Figure 2. 8-Lead TSSOP (RU-8) Figure 3. 3-Lead TO-92 (T-3) over traditional band gap and buried Zener-based references. excellent long-term stability. and 4.096 V for the ADR291 and ADR292, respectively. output, refer to the ADR293 data sheet. extended industrial temperature range of −40°C to +125°C. Table 1. ADR291/ADR292 Product

Rev. F | Page 2 of 20 TABLE OF CONTENTS

REVISION HISTORY

5/11—Rev. E to Rev. F Deleted Negative Precision Reference Without Precision Deleted Figure 33 and Figure 34, Renumbered Sequentially ... 14 12/07—Rev. D to Rev. E 3/06—Rev. C to Rev. D 9/03—Rev. B to Rev. C

Rev. F | Page 3 of 20 SPECIFICATIONS ADR291 ELECTRICAL SPECIFICATIONS VS = 3.0 V to 15 V , TA = 25°C, unless otherwise noted. Table 2. Parameter Symbol Conditions Min Typ Max Unit E GRADE Output Voltage VOUT I OUT = 0 mA 2.498 2.500 2.502 V Initial Accuracy VOERR –2 +2 mV –0.08 +0.08 % F GRADE Output Voltage VOUT I OUT = 0 mA 2.497 2.500 2.503 V Initial Accuracy VOERR –3 +3 mV –0.12 +0.12 % G GRADE Output Voltage VOUT I OUT = 0 mA 2.494 2.500 2.506 V Initial Accuracy VOERR –6 +6 mV –0.24 +0.24 % LINE REGULATION E/F Grades ∆VOUT/∆VIN I OUT = 0 mA 30 100 ppm/V G Grade 40 125 ppm/V LOAD REGULATION E/F Grades ∆VOUT/∆ILOAD V S = 5.0 V, IOUT = 0 mA to 5 mA 30 100 ppm/mA G Grade 40 125 ppm/mA LONG-TERM STABILITY ∆VOUT After 1000 hours of operation @ 125°C 50 ppm NOISE VOLTAGE eN 0.1 Hz to 10 Hz 8 μV p-p WIDEBAND NOISE DENSITY eN @ 1 kHz 480 nV/√Hz VS = 3.0 V to 15 V , TA = −25°C to +85°C, unless otherwise noted. Table 3. Parameter Symbol Conditions Min Typ Max Unit TEMPERATURE COEFFICIENT E Grade TCVOUT I OUT = 0 mA 3 8 ppm/°C F Grade 5 15 ppm/°C G Grade 10 25 ppm/°C LINE REGULATION E/F Grades ∆VOUT/∆VIN I OUT = 0 mA 35 125 ppm/V G Grade 50 150 ppm/V LOAD REGULATION E/F Grades ∆VOUT/∆ILOAD V S = 5.0 V, IOUT = 0 mA to 5 mA 20 125 ppm/mA G Grade 30 150 ppm/mA

Rev. F | Page 4 of 20 VS = 3.0 V to 15 V , TA = −40°C to+125°C, unless otherwise noted. Table 4. Parameter Symbol Conditions Min Typ Max Unit TEMPERATURE COEFFICIENT E Grade TCVOUT I OUT = 0 mA 3 10 ppm/°C F Grade 5 20 ppm/°C G Grade 10 30 ppm/°C LINE REGULATION E/F Grades ∆VOUT/∆VIN I OUT = 0 mA 40 200 ppm/V G Grade 70 250 ppm/V LOAD REGULATION E/F Grades ∆VOUT/∆ILOAD V S = 5.0 V, IOUT = 0 mA to 5 mA 20 200 ppm/mA G Grade 30 300 ppm/mA SUPPLY CURRENT IS T A = 25°C 9 12 μA −40°C ≤ TA ≤ +125°C 12 15 μA THERMAL HYSTERESIS VOUT-HYS 8-lead SOIC, 8-lead TSSOP 50 ppm ADR292 ELECTRICAL SPECIFICATIONS VS = 5 V to 15 V , TA = 25°C, unless otherwise noted. Table 5. Parameter Symbol Conditions Min Typ Max Unit E GRADE Output Voltage VOUT I OUT = 0 mA 4.093 4.096 4.099 V Initial Accuracy VOERR −3 +3 mV −0.07 +0.07 % F GRADE Output Voltage VOUT I OUT = 0 mA 4.092 4.096 4.1 V Initial Accuracy VOERR −4 +4 mV −0.10 +0.10 % G GRADE Output Voltage VOUT I OUT = 0 mA 4.090 4.096 4.102 V Initial Accuracy VOERR −6 +6 mV −0.15 +0.15 % LINE REGULATION E/F Grades ∆VOUT/∆VIN V S = 4.5 V to 15 V, IOUT = 0 mA 30 100 ppm/V G Grade 40 125 ppm/V LOAD REGULATION E/F Grades ∆VOUT/∆ILOAD VS = 5.0 V, IOUT = 0 mA to 5 mA 30 100 ppm/mA G Grade 40 125 ppm/mA LONG-TERM STABILITY ∆VOUT After 1000 hours of operation @ 125°C 50 ppm NOISE VOLTAGE eN 0.1 Hz to 10 Hz 12 μV p-p WIDEBAND NOISE DENSITY eN @ 1 kHz 640 nV/√Hz

Rev. F | Page 5 of 20 VS = 5 V to 15 V , TA = −25°C to +85°C, unless otherwise noted. Table 6. Parameter Symbol Conditions Min Typ Max Unit TEMPERATURE COEFFICIENT E Grade TCVOUT I OUT = 0 mA 3 8 ppm/°C F Grade 5 15 ppm/°C G Grade 10 25 ppm/°C LINE REGULATION E/F Grades ∆VOUT/ΔVIN V S = 4.5 V to 15 V, IOUT = 0 mA 35 125 ppm/V G Grade 50 150 ppm/V LOAD REGULATION E/F Grades ∆VOUT/∆ILOAD V S = 5.0 V, IOUT = 0 mA to 5 mA 20 125 ppm/mA G Grade 30 150 ppm/mA V S = 5 V to 15 V , TA = −40°C to +125°C, unless otherwise noted. Table 7. Parameter Symbol Conditions Min Typ Max Unit TEMPERATURE COEFFICIENT E Grade TCVOUT I OUT = 0 mA 3 10 ppm/°C F Grade 5 20 ppm/°C G Grade 10 30 ppm/°C LINE REGULATION E/F Grades ∆VOUT/∆VIN V S = 4.5 V to 15 V, IOUT = 0 mA 40 200 ppm/V G Grade 70 250 ppm/V LOAD REGULATION E/F Grades ∆VOUT/∆ILOAD V S = 5.0 V, IOUT = 0 mA to 5 mA 20 200 ppm/mA G Grade 30 300 ppm/mA SUPPLY CURRENT IS T A = 25°C 10 15 μA −40°C ≤ TA ≤ +125°C 12 18 μA THERMAL HYSTERESIS VOUT-HYS 8-lead SOIC, 8-lead TSSOP 50 ppm

Table 9. Package Types Table 10. Other XFET Products

Figure 7. ADR291 VOUT vs. Temperature

3 TYPICAL PARTS

Figure 8. ADR292 VOUT vs. Temperature Figure 9. ADR291 Quiescent Current vs. Input Voltage Figure 10. ADR292 Quiescent Current vs. Input Voltage Figure 11. ADR291/ADR292 Supply Current vs. Temperature Figure 12. ADR291/ADR292 Line Regulation vs. Temperature

Rev. F | Page 12 of 20 TERMINOLOGY Line Regulation Line regulation refers to the change in output voltage due to a specified change in input voltage. It includes the effects of self- heating. Line regulation is expressed as percent-per-volt, parts- per-million-per-volt, or microvolts-per-volt change in input voltage. Load Regulation The change in output voltage is due to a specified change in load current and includes 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 Long-term stability refers to the typical shift of output voltage at 25°C on a sample of parts subjected to a test of 1000 hours at 125°C. ( ) ( ) [] () () 610ppm ×−=Δ −= Δ 0OUT 1OUT0OUT OUT 1OUT0OUTOUT t V t V t VV tVtV V where: VOUT (t0) = VOUT at 25°C at Time 0. VOUT (t1) = VOUT at 25°C after 1000 hours of operation at 125°C. Temperature Coefficient Temperature coefficient is the change of output voltage over the operating temperature change, normalized by the output voltage at 25°C, expressed in ppm/°C. The equation follows: [] ( )( ) () () 610C 25C ppm/ ×− × ° −= ° 1 2O 1O2O O T TV T V T VTCV where: VOUT (25°C) = VOUT at 25°C. VOUT (T1) = VOUT at Temperature 1. VOUT (T2) = VOUT at Temperature 2. NC = no connect. There are internal connections at NC pins that are reserved for manufacturing purposes. Users should not connect anything at the NC pins. Thermal Hysteresis Thermal hysteresis is defined as the change of output voltage after the device is cycled through temperatures from +25°C to −40°C, then to +85°C, and back to +25°C. This is a typical value from a sample of parts put through such a cycle. 610C) 25 ( ) 25 ([ppm] C) 25 ( − °= − ° = OUT OUT_TCOUT HYS ΟUT OUT_TCOUTHYS OUT V V C VV VVV where: VOUT (25°C) = VOUT at 25°C. VOUT_TC = VOUT at 25°C after temperature cycle from +25°C to −40°C, then to +85°C, and back to +25°C.

supply current, and very low thermal hysteresis. correction resulting in much lower noise. ΔVP is the difference in pinch-off voltage between the two FETs. IPTAT is the positive temperature coefficient correction current. 4.096 V at the reference output. devices to provide a very low dropout voltage.

1 EXTRA CHANNEL IMPLANT

Figure 31. ADR291/ADR292 Simplified Schematic PD is the device power dissipation. θJA is the device package thermal resistance. required for circuit stability. Figure 32. Basic Voltage Reference Configuration and a 2-pole low-pass filter with a corner frequency at 10 Hz.

Figure 36. Voltage Regulator for Portable Equipment

REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure 37. 8-Lead Standard Small Outline Package [SOIC_N]

0.65 BSC

6.40 BSC

Figure 38. 8-Lead Thin Shrink Small Outline Package [TSSOP] REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure 39. 3-Lead Plastic Header-Style Package [TO-92]

Rev. F | Page 17 of 20 ORDERING GUIDE Model1 Output Voltage Initial Accuracy (±%) Temperature Coefficient Max (ppm/°C) Package

Description

ADR291ERZ 2.50 0.08 8 8-Lead SOIC_N R-8 98 ADR291ERZ-REEL7 2.50 0.08 8 8-Lead SOIC_N R-8 1,000 ADR291FRZ 2.50 0.12 15 8-Lead SOIC_N R-8 98 ADR291FRZ-REEL 2.50 0.12 15 8-Lead SOIC_N R-8 2,500 ADR291FRZ-REEL7 2.50 0.12 15 8-Lead SOIC_N R-8 1,000 ADR291GRZ 2.50 0.24 25 8-Lead SOIC_N R-8 98 ADR291GRZ-REEL 2.50 0.24 25 8-Lead SOIC_N R-8 2,500 ADR291GRZ-REEL7 2.50 0.24 25 8-Lead SOIC_N R-8 1,000 ADR291GRUZ 2.50 0.24 25 8-Lead TSSOP RU-8 98 ADR291GRUZ-REEL 2.50 0.24 25 8-Lead TSSOP RU-8 1,000 ADR291GRUZ-REEL7 2.50 0.24 25 8-Lead TSSOP RU-8 1,000 ADR291GT9Z 2.50 0.24 25 3-Lead TO-92 T-3 98 ADR292ERZ 4.096 0.07 8 8-Lead SOIC_N R-8 98 ADR292ERZ-REEL 4.096 0.07 8 8-Lead SOIC_N R-8 2,500 ADR292FRZ 4.096 0.10 15 8-Lead SOIC_N R-8 98 ADR292FRZ-REEL 4.096 0.10 15 8-Lead SOIC_N R-8 2,500 ADR292FRZ-REEL7 4.096 0.10 15 8-Lead SOIC_N R-8 1,000 ADR292GRZ 4.096 0.15 25 8-Lead SOIC_N R-8 98 ADR292GRZ-REEL7 4.096 0.15 25 8-Lead SOIC_N R-8 1,000 ADR292GRUZ 4.096 0.24 25 8-Lead TSSOP RU-8 98 ADR292GRUZ-REEL7 4.096 0.15 25 8-Lead TSSOP RU-8 1,000 1 Z = RoHS Compliant Part.

Rev. F | Page 18 of 20 NOTES

Rev. F | Page 19 of 20 NOTES

Rev. F | Page 20 of 20 NOTES ©2007–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00163-0-5/11(F)