July 18, 2022 - Offering a superb selection of semiconductors and electronic components, global electronic component distributor Vanceer Electronics has added to its inventory the Analog Devices Inc , 3 nV/√Hz, Low Power Instrumentation Amplifier, AD8421 Series.

Global Electronic Components Distribution Vanceer ElectronicsAD8421 main applications: medical instruments, precision data acquisition, microphone preamplification, vibration analysis, multiplexed input applications, ADC drivers Features.

Low power consumption: 2.3 mA maximum quiescent current

Low noise

3.2 nV/√Hz maximum input voltage noise at 1 kHz

Typical current noise spectral density of 200 fA/√Hz (at 1 kHz)

Excellent AC specifications

10 MHz typical small-signal bandwidth (gain = 1 and gain = 10)

2 MHz typical small-signal bandwidth (gain = 100)

0.6 µs typical stabilization time to 0.001% (gain=10)

80 dB minimum CMRR at 20 kHz (gain=1)

35 V/µs typical slew rate

High Accuracy DC Performance

84 dB min CMRR dc to 60 Hz with 1 kΩ signal source

Unbalance (gain = 1)

0.9 µV/°C Maximum input offset voltage, average

Temperature Coefficient

5 ppm/°C Maximum gain versus temperature (gain=1)

2 nA maximum input bias current

Input protection to opposite supply 40 V

±2.5 V to ±18 V dual supply (+5 V to +36 V single supply)

Gain set with one resistor (gain = 1 to 10,000)

Known good chips (KGD): These chips are fully guaranteed to meet the datasheet specifications.

Data sheet specifications.

General Description

The AD8421-KGD is a low-cost, low-power, low-noise, ultra-low bias current, high-speed instrumentation amplifier.

Low-cost, low-power, low-noise, ultra-low-bias-current, high-speed instrumentation amplifier.

Suitable for a wide range of signal conditioning and data acquisition applications.

Acquisition applications. The device has a high CMRR.

Allows the device to extract low-level signals in the presence of high-frequency common-mode noise.

Extracts low-level signals over a wide temperature range in the presence of high-frequency common-mode noise.

Extracts low-level signals over a wide range.

Small signal bandwidth of 10 MHz, voltage swing rate of 35 V/µs and

settling time of 0.6 µs to 0.001% (gain = 10) allow the AD8421-KGD

to amplify high-speed signals and excel in applications requiring high channel count, multiplexed systems.

Excellent performance in high channel count, multiplexed systems. Even at higher gains.

The current feedback structure maintains high performance.

For example, with a bandwidth of 2 MHz at gain = 100, the stabilization time is 0.8 µm.

The settling time is 0.8 µs.

The AD8421-KGD offers excellent distortion performance, making

This device is suitable for demanding applications, such as vibration analysis.

Vibration analysis.

The AD8421-KGD offers an input voltage noise of 3 nV/√Hz and

200 fA/√Hz current noise spectral density with a quiescent current of only 2 mA.

The quiescent current makes this device ideal for measuring low-level signals.

Ideal for measuring low-level signals. For applications with high source impedance

For applications with high source impedance, the AD8421 employs innovative process and design techniques to provide noise performance.

For applications with high source impedance, the AD8421 employs innovative process technology and design techniques to provide noise performance limited only by the sensor

Noise performance limited only by the sensor.

The AD8421 uses a unique protection method to ensure a robust input while maintaining low noise.

robust input while still maintaining low noise. This protection method

allows input voltages of up to 40 V from the opposite supply rail without damaging the device

without causing damage to the device.

A single resistor can set the gain between 1 and 10,000. Reference

pin can be used to apply a precise offset to the output voltage.

The AD8421 operates from -40°C to +85°C and has an operating temperature of 125°C.

The operating temperature is 125°C.

Additional application and technical information can be found at

Additional application and technical information can be found in the AD8421 data sheet.

Global Electronic Components Distribution Vanceer Electronics

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