AD8421BRZ-RL Datasheet Preview

Enhanced Description


AD8421BRZ-RL Low Power Instrumentation Amplifier

The AD8421BRZ-RL 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 10MHz bandwidth, 35V/µs slew rate, and 0.6µs settling time to 0.001% (G = 10) allow the AD8421 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 2MHz and the settling time is 0.8µs. The AD8421 has excellent distortion performance, making it suitable for use in demanding



Features


• Low Power
- 2.3mA Maximum Supply Current
• Low Noise
- 3.2nV/√Hz Maximum Input Voltage Noise At 1-kHz
- 200fA/√Hz Current Noise At 1-kHz
• Excellent Ac Specifications
- 10-MHz Bandwidth (G = 1)
- 2-MHz Bandwidth (G = 100)
- 0.6µs Settling Time To 0.001% (G = 10)
- 80dB CMRR At 20-kHz (G = 1)
- 35 V/µs Slew Rate
• High Precision Dc Performance (AD8421BRZ)
- 94dB CMRR Minimum (G = 1)
- 0.2µV/°C Maximum Input Offset Voltage Drift
- 1 Ppm/°C Maximum Gain Drift (G = 1)
- 500pA Maximum Input Bias Current
• Inputs Protected To 40V From Opposite Supply
- ±2.5V To ±18V Dual Supply (5V To 36V Single Supply)
• Gain Set With A Single Resistor (G = 1 To 10,000)
• Available In 8-lead LFCSP, 8-lead MSOP, And 8-lead SOIC



Applications


● Medical Instrumentation
● Precision Data Acquisition
● Microphone Preamplification
● Vibration Analysis
● Multiplexed Input Applications
● ADC Driver



Datasheets


Analog Devices 2020-Q4 p.31
Analog Devices 2012-Q2 p.29


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