ADR441 Ultralow Noise, LDO XFET® 2.5V Voltage Reference w/Current Sink and Source

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

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.

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.

Applications

Data Sheet, Rev. C, 3/08

Features and Benefits
  • 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
Linear Products
Reference Designs
Data Sheets
Documentnote
ADR440/ADR441/ADR443/ADR444/ADR445: Ultralow Noise, LDO XFET Voltage References with Current Sink and Source Data Sheet (Rev. F)PDF 407.87 K
User Guides
Documentnote
UG-181: PLC Demo System, Industrial Process Control Demo System (Rev. A)PDF 495.24 K
Product Highlight
Documentnote
Frequently Asked Questions
Documentnote
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
ADR441ARMZ Production8 ld MSOPOTH 50-40 to 125C3.182.95Y
ADR441ARMZ-REEL7 Production8 ld MSOPREEL 1000-40 to 125C02.95Y
ADR441ARZ Production8 ld SOICOTH 98-40 to 125C3.022.78Y
ADR441ARZ-REEL7 Production8 ld SOICREEL 1000-40 to 125C02.78Y
ADR441BRZ Production8 ld SOICOTH 98-40 to 125C4.423.91Y
ADR441BRZ-REEL7 Production8 ld SOICREEL 1000-40 to 125C03.91Y
Reference Materials
ADR440/ADR441/ADR443/ADR444/ADR445: Ultralow Noise, LDO XFET Voltage References with Current Sink and Source Data Sheet (Rev. F) adr440
ADR440/ADR441/ADR443/ADR444/ADR445: 超低噪声、LDO、XFET基准电压源,具有吸电流和源电流能力 (Rev. D) adr440
CN0271 设计和集成文件 ad8495
CN0325 Design & Integration Files adg442
CN0272 设计和集成文件 ad8475
UG-181: PLC Demo System, Industrial Process Control Demo System (Rev. A) ad7793
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