Texas Instruments ADS62P49IRGCR

Overview

ADS62P49IRGCR from Texas Instruments is a dual-channel, 14-bit, 250-MSPS analog-to-digital converter with DDR LVDS and parallel CMOS digital outputs. It features internal/external reference support, programmable gain up to 6 dB, DC offset correction, and operates over –40°C to +85°C. Designed for multi-carrier wideband communications infrastructure requiring high dynamic range and low crosstalk.

For engineers reviewing the ADS62P49IRGCR datasheet, ADS62P49IRGCR pinout, ADS62P49IRGCR application, or ADS62P49IRGCR equivalent, this page delivers verified specifications, package mapping, functional alternatives, and design-critical timing and interface details - all confirmed against TI's SLAS635B (Jan 2011) production data sheet.

Technical Context

The ADS62P49IRGCR implements two independent 14-bit SAR-based ADC cores with sample-and-hold circuits, each supporting differential analog inputs up to 500 MHz (2 V_PP) and clock amplitudes as low as 400 mV_PP. Its digital output path includes configurable DDR LVDS (250 MSPS max) or parallel CMOS (210 MSPS max), with on-chip serializer and output clock buffer.

It integrates a DC offset correction loop, supports both internal and external reference modes (eliminating external decoupling caps on REF pins), and enables gain programming to optimize SFDR/SINAD trade-offs at reduced full-scale input ranges. Power sequencing requires AVDD lead DRVDD during power-up.

Key Specifications

Pinout & Package

ADS62P49IRGCR is housed in a 64-pin QFN package (RGC designation), 9 mm × 9 mm, with exposed thermal pad. Pin functions are defined per TI SLAS635B Figure 1 and Table 4–7.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS62P49IRGCR, ADS62P48IRGCR trades 40 MSPS sample rate for lower power and cost, while ADS62P29IRGCR sacrifices 2 bits of resolution to achieve superior SFDR - making each alternative optimal for distinct signal integrity vs. throughput trade-offs in RF digitization.

Availability

ADS62P49IRGCR is available at Aetrix Electronics and suitable for wireless infrastructure, defense radar, medical ultrasound, and automated test equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ADS62P49IRGCR 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 ADS62Pxx family was designed specifically for wideband, multi-carrier communications infrastructure - delivering high dynamic performance, low power, and flexible digital interfacing in compact QFN packages.

FAQ

What is the maximum analog input frequency supported by ADS62P49IRGCR?

The ADS62P49IRGCR supports analog input frequencies up to 500 MHz when driven with a 2 V_PP differential signal and 25 Ω source impedance, as specified in the Electrical Characteristics table. At 1 V_PP, the usable bandwidth extends to 800 MHz. These values reflect the device's 700 MHz small-signal analog input bandwidth and are validated across the industrial temperature range (–40°C to +85°C).

Does ADS62P49IRGCR require external reference components?

No, ADS62P49IRGCR does not require external reference components when using internal reference mode - the reference circuitry and decoupling are fully integrated. External reference mode is supported via the SCLK pin voltage selection (e.g., (3/8)AVDD), but even then, no external capacitors are needed on REF pins, as stated in the DESCRIPTION section of SLAS635B.

Can ADS62P49IRGCR operate with a 1.5 VPP differential clock input?

Yes, ADS62P49IRGCR supports 1.5 V_PP differential clock input amplitude, which falls within the specified range of 0.2 V_PP to 1.5 V_PP for sine-wave, AC-coupled clocks. This level is explicitly used in TI's timing characterization (e.g., Table on page 11) and ensures reliable 250 MSPS operation with low jitter.

What is the ADC latency of ADS62P49IRGCR in DDR LVDS mode?

The ADS62P49IRGCR exhibits fixed 22-clock-cycle latency from input clock edge to valid DDR LVDS data output, as confirmed in the Timing Requirements section (Figure 5 and Table). This deterministic latency enables precise time-of-flight calculations in radar and ultrasound systems and simplifies FPGA synchronization logic.

How is DC offset correction implemented in ADS62P49IRGCR?

ADS62P49IRGCR includes an on-chip DC offset correction loop that actively cancels channel-specific analog offset errors, reducing them to ±2 mV across temperature. This function operates automatically in normal mode and does not require serial register writes - it is enabled by default and improves I/Q balance without external calibration hardware.