Texas Instruments ADS6424IRGCR

Overview

ADS6424IRGCR from Texas Instruments is a quad-channel, 12-bit, 105 MSPS analog-to-digital converter with serial LVDS interface, internal PLL clock multiplication, and programmable coarse/fine gain. It delivers 71.1 dBFS SINAD at 10 MHz input, 81 dBc SFDR at 170 MHz with 3.5 dB coarse gain, and operates from 3.3-V analog/digital supplies in a 64-pin QFN (9 mm × 9 mm). It is used in base-station IF receivers for high-density digitization of multiple RF paths.

For engineers reviewing the ADS6424IRGCR datasheet, ADS6424IRGCR pinout, ADS6424IRGCR application, or ADS6424IRGCR equivalent, key selection criteria include its 105 MSPS sampling rate, 2-wire DDR LVDS serialization (≤1 Gbps), channel-to-channel aperture delay variation (±80 ps), internal reference support, and industrial temperature range (–40°C to 85°C).

Technical Context

The ADS6424IRGCR employs a simultaneous sample-and-hold architecture across four independent ADC cores, each with 12-bit resolution and no missing codes. Its internal PLL multiplies the input sampling clock to generate the bit clock required for 14× serialization in 2-wire DDR mode.

It supports dual LVDS interface configurations: 2-wire DDR (halving data rate vs. 1-wire) and legacy 1-wire, with programmable LVDS output current, internal termination, and selectable MSB/LSB-first/data format. Clock inputs accept sine, LVCMOS, LVPECL, or LVDS signals down to 400 mVPP differential amplitude.

Key Specifications

Pinout & Package

ADS6424IRGCR is housed in a 64-pin QFN package (9 mm × 9 mm) with exposed thermal pad, θJA = 23.17 °C/W (0 LFM), and industrial temperature rating (–40°C to 85°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-channel, 12-bit, high-speed ADC applications.

Compared with ADS6423IRGCR and ADS6444IRGCR, the ADS6424IRGCR uniquely balances 105 MSPS speed, 12-bit fidelity, and sub-1 Gbps LVDS interface-making it optimal for wideband, multi-channel communications digitization where throughput and density are prioritized over ultimate resolution or lowest power.

Availability

ADS6424IRGCR is available at Aetrix Electronics and suitable for base-station IF receivers, medical ultrasound imaging systems, and automated test equipment requiring stable component supply across extended production lifecycles.

Supply support for ADS6424IRGCR 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, communications, and medical markets.

The ADS6424IRGCR belongs to TI's ADS64xx quad-channel ADC family, designed specifically for high-density, multi-path digitization in wireless infrastructure and instrumentation where simultaneous sampling, LVDS interface efficiency, and configurable gain are critical.

FAQ

What is the maximum sampling rate supported by the ADS6424IRGCR?

The ADS6424IRGCR supports a maximum sampling rate of 105 MSPS per channel, as specified across the full industrial temperature range (–40°C to 85°C) with AVDD = LVDD = 3.3 V. This rate is validated for AC performance including 71.1 dBFS SINAD and 81 dBc SFDR at 170 MHz input with 3.5 dB coarse gain. The ADS6424IRGCR maintains full specification compliance only up to this rated speed.

Does the ADS6424IRGCR require an external reference voltage?

No, the ADS6424IRGCR includes a fully integrated internal reference (VREFT = 2.0 V, VREFB = 1.0 V) that requires no external decoupling. It also supports external reference mode via the VCM pin, where a precision 1.5 V ±0.05 V reference can be applied-enabling system-level reference sharing and tighter temperature drift control. Both modes are selectable via the SEN pin voltage.

How is the LVDS interface configured on the ADS6424IRGCR?

The ADS6424IRGCR supports two LVDS interface modes: 2-wire DDR (default, halving data rate) and 1-wire SDR. Configuration is controlled by CFG1 and CFG2 pins: CFG1 = 0 selects DDR + 1-wire; CFG1 = LVDD–200 mV selects DDR + 2-wire. The 2-wire DDR mode uses separate DCLKP/DCLKM and FCLKP/FCLKM pairs, limiting serialized bit rate to ≤1 Gbps for robust FPGA capture.

What is the channel-to-channel timing matching specification for the ADS6424IRGCR?

The ADS6424IRGCR specifies channel-to-channel aperture delay variation of ±80 ps over temperature (–40°C to 85°C), ensuring tight timing coherence across all four ADC channels. This parameter is measured under identical conditions (same clock, supply, input signal) and directly enables phase-aligned sampling for MIMO and beamforming applications without post-processing skew correction.

Can the ADS6424IRGCR operate with a 1.8-V digital interface?

No, the ADS6424IRGCR requires 3.3-V supplies for both AVDD (analog) and LVDD (LVDS buffer) rails, with absolute maximum ratings of –0.3 V to 3.9 V. Its LVDS outputs comply with ANSI TIA/EIA-644-A, delivering 250–450 mV differential voltage into 100-Ω loads. Interfacing to 1.8-V logic requires external level-shifting circuitry; the device does not support mixed-voltage I/O.