ZJA3622、ZJA3628

  ZJA3622/8 8 nV/√Hz Noise, RRO, Precision Instrumentation Amplifier.pdf

| Features

| Applications

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Sensor signal conditioning	Communication systems	Industrial control
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Precision data acquisition	Instrumentation

| General Description

The ZJA3622/ZJA3628 are precision, low-noise instrumentation amplifiers that can be used to set the gain range from 1 to 10,000 with a single external resistor.

The ZJA3622/ZJA3628 are based on classic three-op-amp structure to provide high common-mode rejection ratio (CMRR) over 93 dB at a gain of 10. This allows it to accurately amplify useful signals in the presence of large external interference, which is a common situation in precision data acquisition, bridge sensor interface, thermocouples, and medical signal acquisition (such as ECG, EEG, etc.).

The ZJA3622/ZJA3628 have excellent dc and ac performances. They have low offset voltage of 125 µV max, offset drift of 0.3 µV/°C, and the bias current is 0.5 nA max, to lower the system calibration cost. The ZJA3622/ZJA3628 work well as a preamplifier due to its low input voltage noise of 8 nV/√Hz at 1 kHz, 2 µV_P-P in the 0.1 Hz to 10 Hz band at the gain of 1. Also, the ZJA3622/ZJA3628 are well suited for multiplexed applications with its settling time of 6.3 µs to 0.01 %, slew rate of 2 V/µs and bandwidth of 625 kHz at the gain of 10.

The ZJA3622 gain equation is G = 1 + 49.4 kΩ/R_G, while the ZJA3628 is G = 1 + 50 kΩ/R_G.

The ZJA3622/ZJA3628 performances are specified over temperature range of -40 °C to +85 °C. Its supply voltage is from ±2.4 V to ±18 V. The ZJA3622/ZJA3628 are available in 8-lead SOIC package.

| Sample & Buy

Produce Order Model	Status	Gain	Temperature Range (°C)	Package	External Package	Quantity
ZJA3622ASAET	ACTIVE	​​	-40 to 125	SOIC-8	Tube	96
ZJA3622ASAER	ACTIVE				13"reel	4 000
ZJA3628ASAET	ACTIVE	​​			Tube	96
ZJA3628ASAER	ACTIVE				13"reel	4000