ADR445 Datasheet | Analog Devices

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 m V Input range: (VOUT + 500 m V) to 18 V High output source and sink current +10 m A and - 5 m A, 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 (e Xtra 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 bination 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 m A of output current and sink up to - 5 m A. It also es with a trim terminal to adjust the output voltage over a 0.5% range without promising 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....