ADR441: Ultralow Noise, LDO XFET Voltage Reference with Current Sink and Source

The ADR44x series is a family of XFET(R) 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.

Offered in two electrical grades, the ADR44x family is avail-able in 8-lead MSOP and narrow SOIC packages. All versions are specified over the extended industrial temperature range of -40°C to +125°C.

产品应用领域 Applications

Precision data acquisition systems
High resolution data converters
Battery-powered instrumentation
Portable medical instruments
Industrial process control systems
Precision instruments
Optical control circuits

ADR441 特点

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
Low dropout operation: 500 mV
Superb temperature coefficient
A Grade: 10 ppm/°C
B Grade: 3 ppm/°C
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

ADR441 功能框图

ADR441 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
ADR441ARMZ	量产	8 ld MSOP	8	工业
ADR441ARMZ-REEL7	量产	8 ld MSOP	8	工业
ADR441ARZ	量产	8 ld SOIC	8	工业
ADR441ARZ-REEL7	量产	8 ld SOIC	8	工业
ADR441BRZ	量产	8 ld SOIC	8	工业
ADR441BRZ-REEL7	量产	8 ld SOIC	8	工业