AD7892ANZ-3

Overview

The AD7892ANZ-3 is a 12-bit successive approximation analog-to-digital converter (ADC) fabricated in Analog Devices' LC2MOS process. It operates from a single +5 V supply and achieves a throughput rate of 600 kSPS with a conversion time of 1.47 µs. The device features an on-chip track/hold amplifier, an internal +2.5 V reference, and versatile interface structures supporting both serial and parallel connections to microprocessors. It accepts an analog input range of ±2.5 V and includes overvoltage protection allowing inputs up to ±7 V without damage.

Feature Summary

• Integrates a fast 12-bit ADC with a 1.47 µs conversion time and 600 kSPS throughput capability.
• Features an on-chip track/hold amplifier and an internal +2.5 V voltage reference.
• Supports flexible high-speed serial and parallel interfaces for direct connection to microcontrollers and DSPs.
• Includes overvoltage protection on analog inputs for the AD7892-3 variant.

Applications

• Portable instrumentation systems requiring low power consumption.
• Industrial data acquisition systems interfacing with microprocessors.
• Digital signal processing applications utilizing serial or parallel bus architectures.

Procurement Notes

Verify the specific suffix 'ANZ-3' against the manufacturer's current ordering guide to confirm package type and temperature range compliance. Ensure the design supports the required ±2.5 V input range and single +5 V supply configuration. Confirm that the 600 kSPS throughput requirement aligns with the system clock constraints and interface timing specifications.

Selection Notes

Select this component when a 12-bit resolution and 600 kSPS sampling rate are required within a single-supply architecture. The AD7892-3 variant is appropriate for bipolar ±2.5 V input signals. Consider the integrated reference and track/hold amplifier if external components must be minimized. Verify interface compatibility with the target microprocessor or DSP for either serial or parallel data transfer modes.

Part Context

The AD7892 series comprises high-speed, low-power 12-bit ADCs available in multiple input range variants. The AD7892-3 specifically targets ±2.5 V inputs with a 600 kSPS rate. Other variants include the AD7892-1 for ±5 V/±10 V inputs at 500 kSPS and the AD7892-2 for 0 V to +2.5 V inputs at 500 kSPS. All share the same core architecture and interface options.

Replacement Considerations

Direct functional substitutes within the AD7892 family include AD7892BNZ-3 for improved accuracy or AD7892ARZ-3 for surface mount packaging. Cross-family replacements require verification of pinout compatibility, interface logic levels, and thermal performance characteristics.