Texas Instruments ADS6444MRGCTEP

Overview

ADS6444MRGCTEP from Texas Instruments is a radiation-hardened, high-performance quad-channel 14-bit analog-to-digital converter (ADC) with 105 MSPS sampling rate, serialized LVDS outputs, and internal/external reference support. It delivers 73.4 dBFS SINAD at 10 MHz input, 83 dBc SFDR at 170 MHz with 3.5 dB coarse gain, and operates across –55°C to 125°C for defense-grade IF receivers and medical imaging systems.

For engineers reviewing the ADS6444MRGCTEP datasheet, ADS6444MRGCTEP pinout, ADS6444MRGCTEP application, or ADS6444MRGCTEP equivalent, this page provides verified technical context, exact pin functions, real-world timing behavior, thermal performance under military temperature extremes, and validated drop-in alternatives for high-reliability signal acquisition designs.

Technical Context

The ADS6444MRGCTEP implements a simultaneous sample-and-hold architecture across four independent 14-bit ADC cores, each operating at up to 105 MSPS with programmable 3.5 dB coarse gain and ±6 dB fine gain in 1-dB steps. Its dual-mode LVDS interface supports both 1-wire and 2-wire DDR serialization - reducing data rate to <1 Gbps per channel while maintaining frame/bit clock synchronization.

An integrated PLL multiplies the input sampling clock to generate the bit clock for serialization; output data format (MSB/LSB first, 2's complement/offset binary), interface mode, and gain settings are configurable via parallel pins (CFG1–CFG4, SEN) or serial register access. Internal reference (1.0 V to 2.0 V) and external reference modes are supported with 0.0125 %/°C gain error drift.

Key Specifications

Pinout & Package

ADS6444MRGCTEP is housed in a thermally enhanced 64-pin QFN package (9 mm × 9 mm) with exposed thermal pad, θJCbot = 0.3 °C/W, supporting high-power dissipation in conduction-cooled environments.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-channel, 14-bit, high-speed ADC applications.

Compared with ADS6444MRGCTEP, ADS6445MRGCTEP offers higher speed and SFDR at increased power and thermal cost, while AD9257BSTZ-105 reduces power and simplifies supply design but shifts clocking and interface complexity to the host processor.

Availability

ADS6444MRGCTEP is available at Aetrix Electronics and suitable for defense electronics, aerospace telemetry, and medical imaging systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADS6444MRGCTEP 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 high-performance analog and embedded processing solutions for mission-critical applications.

The ADS64xx-EP family was engineered specifically for radiation-tolerant, high-reliability signal acquisition in defense, aerospace, and medical systems - emphasizing thermal robustness, controlled baseline manufacturing, and extended product lifecycle support.

FAQ

What is the maximum sampling rate supported by the ADS6444MRGCTEP?

The ADS6444MRGCTEP supports a maximum sampling rate of 105 MSPS across all four channels simultaneously. This rate is fully characterized over the –55°C to 125°C junction temperature range with AVDD = LVDD = 3.3 V and internal reference enabled. At this rate, the device maintains 73.4 dBFS SINAD at 10 MHz input and 83 dBc SFDR at 170 MHz with 3.5 dB coarse gain applied. The ADS6444MRGCTEP is not rated for operation above 105 MSPS.

Does the ADS6444MRGCTEP include an internal voltage reference?

Yes, the ADS6444MRGCTEP includes a fully integrated internal reference with VREFT = 2.0 V and VREFB = 1.0 V, yielding a nominal ΔVREF of 1.0 V ±1.5%. Reference error is specified as ±0.75% FS due to internal reference inaccuracy, with a temperature coefficient of 0.0125 %/°C. External reference mode is also supported, requiring VCM to be held between 1.45 V and 1.55 V.

How does the LVDS output interface of the ADS6444MRGCTEP operate?

The ADS6444MRGCTEP features a programmable LVDS serial output interface supporting both 1-wire and 2-wire DDR modes. In 2-wire DDR mode, each channel outputs data over two differential pairs (e.g., DA0_P/M and DA1_P/M), halving the serial data rate to <1 Gbps. Bit clock (DCLKP/M) and frame clock (FCLKP/M) are transmitted as LVDS signals, and internal termination (100 Ω) can be enabled to eliminate external resistors.

What is the channel-to-channel aperture delay variation for the ADS6444MRGCTEP?

The ADS6444MRGCTEP specifies a maximum channel-to-channel aperture delay variation of ±80 ps across the full –55°C to 125°C temperature range. This tight matching is achieved through matched sample-and-hold circuitry and shared clock distribution, enabling coherent multi-channel acquisition for beamforming and time-of-flight measurements. Aperture jitter is 250 fs rms, further supporting phase-sensitive applications.

Can the ADS6444MRGCTEP be configured using only hardware pins, without serial programming?

Yes, the ADS6444MRGCTEP supports full configuration via parallel control pins (CFG1–CFG4, SEN, PDN) without requiring serial register access. After power-up, resistor-divider voltages on these pins automatically set interface mode (1-/2-wire, DDR/SDR), serialization ratio (14x/16x), data format (MSB/LSB, 2's complement/offset binary), coarse gain, and reference selection. No RESET pulse or software initialization is needed in this mode.