AD7988-5BCPZ-RL7

Overview

The AD7988-5BCPZ-RL7 is a 16-bit successive approximation analog-to-digital converter (ADC) from Analog Devices, operating at a throughput of 500 kSPS. It features a pseudo-differential input range of 0 V to VREF with an external reference voltage between 2.4 V and 5.1 V. The device operates on a single 2.5 V supply (VDD) and supports digital logic interfaces from 1.8 V to 5 V via the VIO pin. Key performance metrics include a signal-to-noise ratio of 91.5 dB, total harmonic distortion of −114 dB, and integral nonlinearity of ±1.25 LSB maximum. Power consumption is 3.5 mW at full throughput. It is housed in a 10-lead LFCSP package and functions within a temperature range of −40°C to +125°C.

Feature Summary

• Zero-latency architecture providing immediate data availability after conversion completion without pipeline delay.
• Versatile serial interface compatible with SPI, QSPI, Microwire, and DSP protocols, supporting daisy-chaining capabilities.
• Low power dissipation with independent digital supply allowing compatibility with various logic families.

Applications

• Automated test equipment
• Data acquisition systems
• Medical instruments
• Machine automation

Procurement Notes

Verify the specific suffix BCPZ-RL7 against the manufacturer's current ordering guide to confirm the reel quantity and grade specifications. Ensure the procurement documentation matches the exact part number for compliance and traceability requirements.

Selection Notes

Select this component when a 16-bit resolution and 500 kSPS sampling rate are required in a compact surface-mount package. Consider the AD7988-1 variant if a lower throughput of 100 kSPS is sufficient for the application design.

Part Context

This device belongs to the AD7988-x family of PulSAR ADCs, which includes the AD7988-1 and AD7988-5 variants. These parts share identical architectural features but differ primarily in their specified maximum throughput rates, offering flexibility for different speed and power requirements.

Replacement Considerations

The AD7988-1 serves as a lower-speed alternative within the same family. For direct functional replacement, verify pinout and electrical characteristics against the AD7988-5BRMZ or AD7988-5BCPZ-RL variants.

FAQ

How does the AD7988-5 handle multiple devices on a single bus?

It supports daisy-chaining multiple ADCs onto a single 3-wire bus using the SDI input to shift data through the chain.

What is the relationship between the reference voltage and the input range?

The analog input range is defined by the external reference voltage (VREF), spanning from 0 V to VREF.

Does the device exhibit pipeline latency?

No, the AD7988-5 utilizes a zero-latency architecture where conversion results are available immediately after the conversion completes.