AD8432ACPZ-R7

RF Amplifiers Overview

The AD8432ACPZ-R7 is a dual-channel, low-power, ultralow noise amplifier featuring selectable gain and active input impedance matching. It operates on a single supply voltage ranging from 4.5 V to 5.5 V, with a typical operating current of 24 mA. The device provides four discrete gain settings: ×4 (12.04 dB), ×8 (18.06 dB), ×12 (21.58 dB), and ×16 (24.08 dB). At the minimum gain setting of ×4, it achieves a -3 dB bandwidth of 200 MHz. Key electrical specifications include an input-referred voltage noise density of 0.85 nV/√Hz and a current noise density of 2.0 pA/√Hz. The output slew rate is specified at 295 V/μs. Each channel features a single-ended input and a differential output configuration.

RF Amplifiers Feature Summary

• Integrates active feedback networks for dynamic input impedance matching without degrading noise performance
• Provides selectable gain options via external pin connections to accommodate various signal source impedances
• Features built-in input clamp protection circuits to safeguard against overvoltage conditions

RF Amplifiers Applications

• Continuous wave Doppler ultrasound front-end signal processing
• Driving broadband analog-to-digital converters
• Low-noise preamplification stages
• Pre-drivers for I/Q demodulators and phase shifters

RF Amplifiers Procurement Notes

Verify the specific suffix 'R7' indicates reel packaging when sourcing components. Confirm that the device requires a single 5 V supply rail within the 4.5 V to 5.5 V range. Ensure the application design accounts for the thermal dissipation requirements associated with the exposed pad LFCSP package. Cross-reference the datasheet revision to confirm the exact electrical limits for the selected gain configuration.

RF Amplifiers Selection Notes

Select this component when ultralow noise performance is critical alongside high-speed signal integrity. The device is suitable for applications requiring precise gain control and simultaneous input impedance matching. Consider the dual-channel architecture for balanced signal paths in differential systems. Evaluate the power consumption constraints, as the device draws approximately 24 mA total current per unit.

RF Amplifiers Part Context

This part belongs to Analog Devices' family of ultralow noise amplifiers designed for high-performance RF and IF applications. It complements other devices in the series by offering integrated impedance matching capabilities. The AD8432ACPZ-R7 is specifically packaged in an 8-lead LFCSP format, optimizing board space while maintaining thermal efficiency through the exposed bottom pad design.

RF Amplifiers Replacement Considerations

The AD8432ACPZ-WP is a qualified alternative variant within the same product line. Both parts share identical electrical characteristics and pinout configurations. Verify that the replacement part meets the specific industrial temperature range and packaging requirements of the target design.