ADS61B29IRGZR

Analog To Digital Converters (ADC) Overview

The ADS61B29IRGZR is a 12-bit, 250-MSPS analog-to-digital converter from Texas Instruments. It features an integrated high-impedance analog input buffer with a ±1V input range. The device operates on a single 3.3V supply and supports parallel CMOS or LVDS digital interfaces. Key performance metrics include a typical Signal-to-Noise Ratio (SNR) of 70.9 dB and an Effective Number of Bits (ENOB) of 11.4 bits at Nyquist frequencies. Differential Nonlinearity (DNL) and Integral Nonlinearity (INL) are specified at ±1 LSB. It is housed in a 48-pin VQFN package.

Analog To Digital Converters (ADC) Feature Summary

• Integrated high-impedance analog input buffer eliminates external matching components
• Supports flexible digital output formats via selectable parallel CMOS or LVDS interfaces
• Optimized for low power consumption while maintaining high-speed sampling capabilities

Analog To Digital Converters (ADC) Applications

• Software Defined Radio (SDR)
• Direct RF Sampling Systems
• Test and Measurement Equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'RGZR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the operating temperature range meets the environmental specifications of the target application board. Ensure compatibility with the ADS61B29EVM development kit for initial validation and signal integrity testing before final deployment.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a single-channel ADC with an integrated input buffer is required to simplify front-end design. It is suitable for applications demanding high linearity and low noise at 250 MSPS without additional analog conditioning circuitry. Consider the power budget constraints as it offers efficient performance relative to its sampling rate and resolution class.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS61Bx9 family of 14-/12-Bit, 250MSPS ADCs with integrated analog buffers. It shares architectural similarities with the ADS61B49 but differs in resolution. The RGZ package variant indicates a 48-lead VQFN form factor designed for surface-mount applications requiring compact footprints and thermal efficiency.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS61B29IRGZT serves as a tube-packaged alternative within the same series. Designers may also consider the ADS61B49IRGZR if higher 14-bit resolution is acceptable. Verify pinout compatibility and software configuration requirements when substituting with other members of the ADS61Bx9 family.