AD9054BST-135

Overview

The AD9054BST-135 is an 8-bit, 135 MSPS analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates on a single +5V power supply and features a built-in 2.5V reference voltage. The device accepts a differential analog input with a peak-to-peak voltage of 1V and utilizes TTL-compatible digital interfaces. Data output is available in either single 8-bit or dual 8-bit modes via DA and DB ports. The component is housed in a TQFP-44 package and includes dedicated pins for clock inputs (ENCODE), data synchronization control (DS), and reference voltage connections.

Feature Summary

• 135 MSPS sampling rate with 8-bit resolution
• Single +5V power supply operation
• Integrated 2.5V internal reference voltage
• TTL-compatible digital interface

Applications

• High-speed A/D acquisition cards based on CPLD architectures
• Portable instrumentation systems
• Medical ultrasound equipment
• Software-defined radio (SDR) front ends

Procurement Notes

Verify the specific suffix '135' to confirm the 135 MSPS speed grade, as other variants like the AD9054ABST-135 may denote different performance levels or packaging. Ensure the TQFP-44 package type matches the design footprint. Confirm that the single-supply requirement aligns with the system power architecture, as this device does not support dual supplies natively without external circuitry modifications.

Selection Notes

Select this component when a cost-effective, high-speed 8-bit ADC is required for applications up to 135 MSPS. The integrated reference simplifies board design by reducing external component count. Consider the dual 8-bit output mode if higher throughput is needed, noting that data synchronization pulses are required to distinguish between the DA and DB data streams. Ensure the analog input signal amplitude fits within the specified 1V peak-to-peak range.

Part Context

The AD9054 series represents Analog Devices' entry into high-speed, low-power data conversion. While the AD9054A variant targets space applications with MIL-PRF-38535 compliance, the BST-135 version is designed for commercial use. It shares architectural similarities with other members of the family but differs in speed grades and packaging options, serving as a bridge between lower-speed precision ADCs and higher-speed RF sampling converters.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.