Texas Instruments ADS62P45IRGCR

Overview

ADS62P45IRGCR from Texas Instruments is a dual-channel, 14-bit analog-to-digital converter with 125 MSPS maximum sample rate, DDR LVDS or parallel CMOS outputs, 95 dB crosstalk, and integrated digital processing block (offset/fine gain correction, decimation, 24-tap programmable filters). It operates over –40°C to 85°C and targets high-fidelity RF sampling in radar and medical imaging systems.

For engineers reviewing the ADS62P45IRGCR datasheet, ADS62P45IRGCR pinout, ADS62P45IRGCR application, or ADS62P45IRGCR equivalent, key selection criteria include its 125 MSPS sampling capability at 14-bit resolution, dual-output interface flexibility, on-chip digital signal conditioning, and QFN-64 package thermal performance (θJA = 23.17 °C/W).

Technical Context

The ADS62P45IRGCR implements a pipelined ADC architecture with internal sample-and-hold and low-jitter clock buffer, enabling high SNR (73.7 dBFS @ 10 MHz) and SFDR (88 dBc @ 10 MHz) at full-scale input frequencies up to 450 MHz. Its digital processing block supports real-time offset correction, fine gain adjustment in 0.05 dB steps, decimation by 2/4/8, and configurable 24-tap FIR filtering - all programmable via serial interface or parallel control pins.

It supports multiple clock inputs (LVPECL, LVDS, LVCMOS, sine), includes a clock duty cycle stabilizer, and offers selectable coarse gain (0 dB or 3.5 dB) to optimize SNR/SFDR trade-offs. Internal reference (1 V–2 V) is standard; external reference mode is supported with VCM = 1.45–1.55 V.

Key Specifications

Pinout & Package

The ADS62P45IRGCR is housed in a 64-pin QFN package (RGC designation) with 0.5-mm pitch and exposed thermal pad. Pin functions are defined per TI SLAS561C Rev. FEBRUARY 2012.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel, high-speed ADC applications.

Compared with ADS62P44IRGCR and ADS62P25IRGCR, the ADS62P45IRGCR delivers highest dynamic range (73.7 dBFS SINAD, 88 dBc SFDR) at full 125 MSPS - making it optimal for radar and high-end communications where 14-bit precision and wide Nyquist zone utilization are mandatory.

Availability

ADS62P45IRGCR is available at Aetrix Electronics and suitable for radar systems, medical ultrasound beamformers, and wireless infrastructure requiring stable component supply across industrial temperature range (–40°C to 85°C) and long-term production continuity.

Supply support for ADS62P45IRGCR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-performance data converters for industrial, automotive, and communications markets.

The ADS62P4X family was designed for high-fidelity, dual-channel RF sampling in demanding applications including radar, medical imaging, and broadband communications - emphasizing integration, configurability, and thermal efficiency in compact QFN packages.

FAQ

What is the maximum sampling rate supported by the ADS62P45IRGCR?

The ADS62P45IRGCR supports a maximum sampling rate of 125 MSPS, as specified in TI's SLAS561C datasheet. This rate is achievable with both DDR LVDS and parallel CMOS output interfaces under recommended operating conditions (AVDD = 3.3 V, DRVDD = 3.3 V, 50% clock duty cycle). At this rate, the device maintains 73.7 dBFS SINAD and 88 dBc SFDR at 10 MHz input frequency with 0 dB coarse gain.

Does the ADS62P45IRGCR require an external reference voltage?

No, the ADS62P45IRGCR includes an internal reference (VREFT = 2 V, VREFB = 1 V) and operates fully functional without external reference components. However, it supports external reference mode via the VCM pin (1.45–1.55 V), allowing system-level reference sharing or improved stability in noise-sensitive environments - confirmed in the "REFERENCE VOLTAGES" section of the datasheet.

How does the digital processing block in the ADS62P45IRGCR improve system design?

The ADS62P45IRGCR's digital processing block provides offset correction, fine gain adjustment (0.05 dB steps), decimation by 2/4/8, and built-in/custom 24-tap FIR filtering. This reduces FPGA or DSP computational load in real-time signal conditioning - for example, enabling on-chip DC offset removal before demodulation in SDR receivers, or programmable anti-alias filtering without external analog components.

What output interface options does the ADS62P45IRGCR support?

The ADS62P45IRGCR supports two independent output interfaces: DDR LVDS (differential, double-data-rate) and parallel CMOS (14-bit per channel). Interface selection is controlled via the SEN pin voltage during power-up. DDR LVDS minimizes EMI and supports longer trace routing; parallel CMOS simplifies interfacing with legacy ASICs or low-voltage FPGAs - both modes are fully characterized in the datasheet's electrical and timing sections.

Is the ADS62P45IRGCR pin-compatible with other devices in the ADS62P4X family?

Yes, all ADS62P4X variants - including ADS62P45IRGCR, ADS62P44IRGCR, ADS62P43IRGCR, and ADS62P42IRGCR - share identical 64-pin QFN (RGC) packaging and pinout. This allows drop-in replacement across sampling rates (125/105/80/65 MSPS) without PCB redesign, enabling scalable system development and inventory rationalization within the same hardware platform.