AD8222ACPZ-RL

The AD8222ACPZ-RL is a low-noise, low-distortion, low-power, single-channel instrumentation amplifier designed to amplify a differential input signal in the presence of high common-mode voltage. The AD8222ACPZ-RL features adjustable gain, high common-mode rejection ratio (CMRR), wide bandwidth, and good power supply rejection ratio (PSRR). In addition to its exceptional performance, the AD8222ACPZ-RL is very easy to use, making it well suited for a variety of applications in the medical, industrial, automotive, and aerospace industries.

The AD8222ACPZ-RL amplifier operates on a single power supply ranging from +2.7 V to +5.5 V, where a 2.2 µV offset voltage is achieved. It contains a high-voltage differential complementary pair of PNP and NPN transistors and one PNP cascode transistor, which are connected to form a transimpedance amplifier (TIA). The device has a wide gain range of 0.05 V/V to 10 V/V and a high common-mode input range of -20 V to +20 V.

The AD8222ACPZ-RL has two input pins (IN+, IN-) and two output pins (OUT, GND). The input pins must be ac-coupled to the output pins to avoid dc offsets due to the CMRR of the device. A 0.1 µF bypass capacitor must be connected between the IN+ and GND pins for proper operation. The gain of the amplifier is set with an external resistor or through a resistor network between the EXC+ and EXC- pins. The device can be configured for a gain of 1 V/V or 10 V/V with 0.1% accuracy.

The device has a low input bias current of 100pA and a low input-referred noise of 4nV/√Hz, making it ideal for precision sensor applications. The AD8222ACPZ-RL has a high common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR). The CMRR is typically greater than 85 dB, and the PSRR is typically greater than 65 dB. The device also features excellent phase margin, which is typically greater than 85° at a gain of 1.

The AD8222ACPZ-RL is suitable for a wide range of instrumentation, medical and industrial applications, including strain gauge bridge amplified signals, precision level detection and measurement, differential remote sensors and transducers, temperature monitoring and other electrochemical measurements, and low-level audio differential input microphone amplification.

In summary, the AD8222ACPZ-RL is a high-performance, low-noise, low-power instrumentation amplifier designed to be used in a variety of applications. It features a wide gain range, high common-mode rejection ratio, and good power supply rejection ratio. The device offers excellent performance and is easy to use, making it suitable for a variety of applications in the medical, industrial, automotive, and aerospace industries.