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Series Information for AD8421ARZ - Analog Devices


  • feature
    Specified from u221255u00b0C to 125u00b0C 0.9 u03bcV/u00b0C maximum input offset voltage drift 5 ppm/u00b0C maximum gain drift (G = 1) Low power 2.3 mA maximum supply current Low noise 3.2 nV/u221aHz maximum input voltage noise at 1 kHz 200 fA/u221aHz current noise at 1 kHz Excellent ac specifications 2 MHz bandwidth (G = 100) 0.6 u03bcs settling time to 0.001% (G = 10) 80 dB minimum CMRR at 20 kHz (G = 1) High precision dc performance 84 dB CMRR minimum (G = 1) 2 nA maximum input bias current Inputs protected to 40 V from opposite supply Gain set with a single resistor (G = 1 to 10,000) ENHANCED PRODUCT FEATURES Supports defense and aerospace applications (AQEC standard) Military temperature range (u221255u00b0C to +125u00b0C) Controlled manufacturing baseline One assembly/test site One fabrication site Enhanced product change notification Qualification data available on request PIN CONNECTION DIAGRAM TOP VIEW (Not to Scale) u2013IN 1 RG 2 RG 3 +IN 4 +VS 8 VOUT 7 REF 6 u2013VS 5 AD8421-EP 11139-001



The AD8421-EP is a low cost, low power, extremely low noise, ultralow bias current, high speed instrumentation amplifier that is ideally suited for a broad spectrum of signal conditioning and data acquisition applications. This product features extremely high CMRR, allowing it to extract low level signals in the presence of high frequency common-mode noise over a wide temperature range. The 10 MHz bandwidth, 35 V/μs slew rate, and 0.6 μs settling time to 0.001% (G = 10) allow the AD8421-EP to amplify high speed signals and excel in applications that require high channel count, multiplexed systems. Even at higher gains, the current feedback architecture maintains high performance; for example, at G = 100, the bandwidth is 2 MHz and the settling time is 0.8 μs. The AD8421-EP has excellent distortion performance, making it suitable for use in demanding applications such as vibration analysis. The AD8421-EP delivers 3 nV/√Hz input voltage noise and 200 fA/√Hz current noise with only 2 mA quiescent current, making it an ideal choice for measuring low level signals. For applications with high source impedance, the AD8421-EP employs innovative process technology and design techniques to provide noise performance that is limited only by the sensor. The AD8421-EP uses unique protection methods to ensure robust inputs while still maintaining very low noise. This protection allows input voltages up to 40 V from the opposite supply rail without damage to the part. A single resistor sets the gain from 1 to 10,000. The reference pin can be used to apply a precise offset to the output voltage. The AD8421-EP is specified over the military temperature range of −55°C to +125°C. It is available in an 8-lead MSOP package. Additional application and technical information can be found in the AD8421 data sheet.


No. of Amplifiers:
1 Amplifier, 1Amplifiers
Input Offset Voltage:
Slew Rate:
Supply Voltage Range:
5V to 36V
Amplifier Case Style:
No. of Pins:
Amplifier Output:
Operating Temperature Min:
Operating Temperature Max:
Product Range:
AD8421 Series
Automotive Qualification Standard:
RoHS Phthalates Compliant:
MSL 1 - Unlimited
No SVHC (07-Jul-2017)
Amplifer Supply Voltage:
5V to 36V
Operating Temperature Range:
-40°C to +85°C
Supply Current:

Alternate Descriptions

RS Components
Analog Devices, AD8421ARZ
Transfer Multisort Elektronik
Operational amplifier; 10MHz; 5÷36V; Channels:1; SO8
Richardson RFPD
RS Components UK
Analog Devices, AD8421ARZ
RS Components DE
Instrumentenverstärker AD8421ARZ, Offset 135μV 5 → 36 V 10MHz, CMRR 80dB, SOIC 8-Pin Stromversorgungs-Typ : Dual, Single Montage-Typ : SMD Versorgungsspannung bipolar typ. : ±2.5 → ±18V Offsetspannung Eingang max. : 135µV Betriebstemperatur min. : -40 °C Betriebstemperatur max. : +85 °C Eingangswiderstand max. : 2kΩ Versorgungsstrom max. : 2,3 mA Abmessungen : 5 x 4 x 1.5mm, Analog Devices
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Analog Devices, AD8421ARZ
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Analog Devices, AD8421ARZ
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Analog Devices, AD8421ARZ