ADR4525 Series

Ultra-Low-Noise, High-Accuracy 2.5V Voltage Reference

Catalog

Ultra-Low-Noise, High-Accuracy 2.5V Voltage Reference

Part	Current - Output	Tolerance	Grade	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Input [Min]	Voltage - Input [Max]	Temperature Coefficient	Current - Supply	Output Type	Supplier Device Package	Reference Type	Voltage - Output (Min/Fixed)	Mounting Type	Noise - 0.1Hz to 10Hz	Package / Case	Package / Case [y]	Package / Case [x]
Analog Devices ADR4525WBRZ-R7	10 mA	0.02 %	Automotive	125 °C	-40 °C	3 V	15 V	2 ppm/°C	950 µA	1.81 mOhm	8-SOIC	Series	2.5 V	Surface Mount	1.25 µVp-p	8-SOIC	3.9 mm	0.154 in
Analog Devices ADR4525ARZ-R7	10 mA	0.04 %		125 °C	-40 °C	3 V	15 V	4 ppm/°C	950 µA	1.81 mOhm	8-SOIC	Series	2.5 V	Surface Mount	1.25 µVp-p	8-SOIC	3.9 mm	0.154 in
Analog Devices ADR4525BRZ-R7	10 mA	0.02 %		125 °C	-40 °C	3 V	15 V	2 ppm/°C	950 µA	1.81 mOhm	8-SOIC	Series	2.5 V	Surface Mount	1.25 µVp-p	8-SOIC	3.9 mm	0.154 in
Analog Devices ADR4525DEZ-R7	10 mA	0.02 %		70 °C	0 °C	3 V	15 V	0.8 ppm/°C	950 µA	1.81 mOhm	8-CLCC (5x5)	Series	2.5 V	Surface Mount	1.25 µVp-p	8-CLCC

Catalog

Ultra-Low-Noise, High-Accuracy 2.5V Voltage Reference

Key Features

• Maximum temperature coefficient (TCVOUT):

• 0.8 ppm/°C (D grade 0°C to 70°C)

• 1 ppm/°C (C grade 0°C to 70°C)

• 2 ppm/°C (B grade −40°C to +125°C)

• 4 ppm/°C (A grade −40°C to +125°C)

• Output noise (0.1 Hz to 10 Hz):

• 1 μV p-p at VOUTof 2.048 V typical

• Initial output voltage error:B, C, D grade: ±0.02% (maximum)

• B, C, D grade: ±0.02% (maximum)

• Input voltage range: 3 V to 15 V

• Operating temperature:

• A grade and B grade: −40°C to +125°C

• C grade and D grade: 0°C to +70°C

• Output current: +10 mA source/−10 mA sink

• Low quiescent current: 950 μA (maximum)

• Low dropout voltage: 300 mV at 2 mA (VOUT≥ 3 V)

• 8-lead SOIC package and LCC package

• AEC-Q100 qualified for automotive applications

• Long-term drift: 8 ppm typical at 4500 hours

Description

TheADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550devices are high precision, low power, low noise voltage references featuring ±0.02% B, C, and D grade maximum initial error, excellent temperature stability, and low output noise.This family of voltage references uses an innovative core topology to achieve high accuracy while offering industry-leading temperature stability and noise performance. The low, thermally induced output voltage hysteresis and low long-term output voltage drift of the devices also improve system accuracy over time and temperature variations.A maximum operating current of 950 μA and a maximum low dropout voltage of 300 mV allow the devices to function very well in portable equipment.The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 series of references are each provided in an 8-lead SOIC and are available in a wide range of output voltages, all of which are specified over the extended industrial temperature range of −40°C to +125°C.The ADR4525, ADR4540, and ADR4550 are also available in D, which are in 8 lead LCC package, and C grade with a temperature range of 0°C to 70°C. The ADR4525W, available in an 8‑lead SOIC package, is qualified for automotive applications.APPLICATIONSPrecision data acquisition systemsHigh resolution data convertersHigh precision measurement devicesIndustrial instrumentationMedical devicesAutomotive battery monitoring