AD8432ACPZ-WP

RF Amplifiers Overview

The AD8432ACPZ-WP is a dual-channel, low-power, ultralow noise amplifier featuring selectable gain and active input impedance matching. It operates on a single 4.5 V to 5.5 V supply with 60 mW per channel power consumption. The device offers four gain settings: ×4 (12.04 dB), ×8 (18.06 dB), ×12 (21.58 dB), and ×16 (24.08 dB). At ×4 gain, it provides a 200 MHz bandwidth. Key electrical parameters include an input-referred voltage noise of 0.85 nV/√Hz, current noise of 2.0 pA/√Hz, and a slew rate of 295 V/μs. It utilizes a 24-lead LFCSP package.

RF Amplifiers Feature Summary

• Integrates selectable gain and dynamic input impedance matching via feedback networks without degrading noise performance.
• Features single-ended input and differential output architecture with built-in input clamp protection circuits.
• Provides ultralow noise characteristics suitable for high-performance signal processing applications.

RF Amplifiers Applications

• Continuous wave Doppler ultrasound front-end signal processing
• Broadband analog-to-digital converter driving
• Low-noise preamplification stages
• I/Q demodulator and phase shifter predrivers

RF Amplifiers Procurement Notes

Verify the specific suffix WP indicates waffle pack packaging when reviewing procurement documents. Confirm the operating temperature range covers -40°C to +85°C for industrial compliance. Ensure the selected variant matches the required gain configuration pins for the intended circuit design. Cross-reference the datasheet revision date to ensure all electrical specifications align with current manufacturing standards.

RF Amplifiers Selection Notes

Select this component for applications requiring simultaneous low noise and precise impedance matching in a compact form factor. The dual-channel design supports balanced signal paths essential for I/Q processing. Consider the 24-lead LFCSP package for thermal management via the exposed pad. Evaluate the available gain steps against the required signal amplification levels to optimize system noise figure.

RF Amplifiers Part Context

The AD8432 series consists of dual-channel amplifiers designed for high-speed, low-noise applications. The ACPZ-WP variant specifically denotes the lead-free, waffle-pack configuration within the LFCSP family. This part belongs to Analog Devices' portfolio of precision RF and IF amplifiers, emphasizing performance in medical imaging and communication systems.

RF Amplifiers Replacement Considerations

Direct substitutes may include other parts from the AD8432 family with different packaging options such as the tape-and-reel version. Verify pin compatibility and electrical specifications before swapping packages. No alternative manufacturers are officially confirmed as direct replacements in public documentation.

RF Amplifiers FAQ

How is the gain configured on the AD8432?

Gain is set by connecting specific gain setting pins to either VDD or GND, allowing selection among ×4, ×8, ×12, and ×16 amplification factors.

What is the input impedance matching capability?

The device features active input impedance matching that adjusts dynamically based on the selected gain setting, maintaining low noise performance while matching source impedance.