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ADR443 Dataheets PDF



Part Number ADR443
Manufacturers Analog Devices
Logo Analog Devices
Description LDO XFET Voltage References
Datasheet ADR443 DatasheetADR443 Datasheet (PDF)

Ultralow Noise, LDO XFET Voltage References with Current Sink and Source ADR440/ADR441/ADR443/ADR444/ADR445 FEATURES Ultralow noise (0.1 Hz to 10 Hz) ADR440: 1 μV p-p ADR441: 1.2 μV p-p ADR443: 1.4 μV p-p ADR444: 1.8 μV p-p ADR445: 2.25 μV p-p Superb temperature coefficient A grade: 10 ppm/°C B grade: 3 ppm/°C Low dropout operation: 500 mV Input range: (VOUT + 500 mV) to 18 V High output source and sink current +10 mA and −5 mA, respectively Wide temperature range: −40°C to +125°C APPLICATIONS .

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Ultralow Noise, LDO XFET Voltage References with Current Sink and Source ADR440/ADR441/ADR443/ADR444/ADR445 FEATURES Ultralow noise (0.1 Hz to 10 Hz) ADR440: 1 μV p-p ADR441: 1.2 μV p-p ADR443: 1.4 μV p-p ADR444: 1.8 μV p-p ADR445: 2.25 μV p-p Superb temperature coefficient A grade: 10 ppm/°C B grade: 3 ppm/°C Low dropout operation: 500 mV Input range: (VOUT + 500 mV) to 18 V High output source and sink current +10 mA and −5 mA, respectively Wide temperature range: −40°C to +125°C APPLICATIONS Precision data acquisition systems High resolution data converters Battery-powered instrumentation Portable medical instruments Industrial process control systems Precision instruments Optical control circuits GENERAL DESCRIPTION The ADR44x series is a family of XFET® voltage references featuring ultralow noise, high accuracy, and low temperature drift performance. Using Analog Devices, Inc., patented temperature drift curvature correction and XFET (eXtra implanted junction FET) technology, voltage change vs. temperature nonlinearity in the ADR44x is greatly minimized. The XFET references offer better noise performance than buried Zener references, and XFET references operate off low supply voltage headroom (0.5 V). This combination of features makes the ADR44x family ideally suited for precision signal conversion applications in high-end data acquisition systems, optical networks, and medical applications. The ADR44x family has the capability to source up to 10 mA of output current and sink up to −5 mA. It also comes with a trim terminal to adjust the output voltage over a 0.5% range without compromising performance. 05428-001 PIN CONFIGURATIONS TP 1 VIN 2 NC 3 ADR440/ ADR441/ ADR443/ ADR444/ ADR445 8 TP 7 NC 6 VOUT GND 4 TOP VIEW 5 TRIM (Not to Scale) NOTES 1. NC = NO CONNECT 2. TP = TEST PIN (DO NOT CONNECT) Figure 1. 8-Lead SOIC_N (R-Suffix) TP 1 VIN 2 NC 3 GND 4 ADR440/ ADR441/ ADR443/ ADR444/ ADR445 TOP VIEW (Not to Scale) 8 TP 7 NC 6 VOUT 5 TRIM NOTES 1. NC = NO CONNECT 2. TP = TEST PIN (DO NOT CONNECT) Figure 2. 8-Lead MSOP (RM-Suffix) 05428-002 Offered in two electrical grades, the ADR44x family is available in 8-lead MSOP and narrow SOIC packages. All versions are specified over the extended industrial temperature range of −40°C to +125°C. Table 1. Selection Guide Model Output Voltage (V) Initial Accuracy (mV) ADR440A 2.048 ±3 ADR440B 2.048 ±1 ADR441A 2.500 ±3 ADR441B 2.500 ±1 ADR443A 3.000 ±4 ADR443B 3.000 ±1.2 ADR444A 4.096 ±5 ADR444B 4.096 ±1.6 ADR445A 5.000 ±6 ADR445B 5.000 ±2 Temperature Coefficient (ppm/°C) 10 3 10 3 10 3 10 3 10 3 Rev. E 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 p.


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