Product Details
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 VOUT of 2.048 V typical
Initial output voltage error:
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 and LCC package
AEC-Q100 qualified for automotive applications Long-term drift: 8 ppm typical at 4500 hours
Applications
Precision data acquisition systems High resolution data converters High precision measurement devices Industrial instrumentation
Medical devices
Automotive battery monitoring
General Description
The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/
ADR4550 devices 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.
Pin Configurations
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.
Table 1. Selection Guide
Model |
Output Voltage (V) |
Grade |
ADR4520 |
2.048 |
A, B |
ADR4525 |
2.5 |
A, B, C, D |
ADR4525W |
2.5 |
B |
ADR4530 |
3.0 |
A, B |
ADR4533 |
3.3 |
A, B |
ADR4540 |
4.096 |
A, B, C, D |
ADR4550 |
5.0 |
A, B, C, D |
Table 2. Voltage Reference Choices from Analog Devices, Inc.
VOUT (V) |
Micropower |
Low Power |
Ultralow Noise |
2.048 |
ADR3420
LT6656
|
ADR360
LTC6652
LT6654
|
ADR440
LTC6655
|
2.5 |
ADR3425
LT1461
LT6656
|
ADR361
LTC6652
LT6654
|
ADR441
LTC6655
|
5.0 |
ADR3450
LT1461
LT6656
|
ADR365
LTC6652
LT6654
|
ADR445
LTC6655
|
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