Texas Instruments ADS6445MRGCTEP

Overview

ADS6445MRGCTEP from Texas Instruments is a radiation-tolerant, high-performance quad-channel 14-bit analog-to-digital converter (ADC) with 125 MSPS maximum sampling rate, serialized LVDS outputs, and internal/external reference support. It delivers 73.4 dBFS SINAD at 10 MHz input and 87 dBc SFDR, operating across –55°C to 125°C for defense-grade IF receivers and medical imaging systems.

For engineers reviewing the ADS6445MRGCTEP datasheet, ADS6445MRGCTEP pinout, ADS6445MRGCTEP application, or ADS6445MRGCTEP equivalent, this page provides verified electrical specifications, thermal metrics, LVDS interface timing, coarse/fine gain programming, and military-temperature QFN-64 package details essential for base-station diversity receiver design and high-reliability embedded signal acquisition.

Technical Context

The ADS6445MRGCTEP integrates four independent 14-bit ADC cores with simultaneous sample-and-hold, a PLL-based bit clock generator, and dual-mode LVDS serialization (1-wire/2-wire, SDR/DDR). Each channel supports programmable 3.5-dB coarse gain and up to 6-dB fine gain in 1-dB steps to optimize SFDR/SNR trade-offs at RF input frequencies up to 230 MHz.

Its digital interface includes parallel configuration pins (CFG1–CFG4, SEN, PDN) and a 16-bit serial register interface with priority arbitration. Output data format (MSB/LSB first, 2's complement/offset binary), serialization ratio (14×/16×), and internal LVDS termination are fully configurable without external components.

Key Specifications

Pinout & Package

ADS6445MRGCTEP uses a thermally enhanced 64-pin QFN package (9 mm × 9 mm, RGC designation) with exposed thermal pad. Pin functions are validated per TI SLAS573C Rev. May 2013 datasheet Figure 1 and Table 5–11.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS6444MRGCTEP and AD9694BCPZ-1300, the ADS6445MRGCTEP uniquely balances 125 MSPS speed, LVDS simplicity, military-temperature reliability, and analog performance in a single 64-pin QFN-making it optimal for space-constrained, high-SFDR IF digitization where JESD204B adds unnecessary complexity.

Availability

ADS6445MRGCTEP is available at Aetrix Electronics and suitable for base-station IF receivers, medical ultrasound front-ends, and defense radar subsystems requiring stable component supply across extended temperature and long product lifecycles.

Supply support for ADS6445MRGCTEP 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-reliability ICs for industrial, automotive, and aerospace markets.

The ADS6445MRGCTEP belongs to TI's ADS644x-EP radiation-tolerant ADC family, designed specifically for high-performance, extended-temperature signal acquisition in mission-critical defense, aerospace, and medical systems.

FAQ

What is the maximum sampling rate supported by the ADS6445MRGCTEP?

The ADS6445MRGCTEP supports a maximum sampling rate of 125 MSPS, validated across its full –55°C to 125°C operating junction temperature range. This rate enables digitization of input signals up to 62.5 MHz under Nyquist criteria. Performance metrics including SINAD (73.4 dBFS) and SFDR (87 dBc) are specified at this rate with 0 dB coarse gain and 10 MHz input frequency, per TI SLAS573C datasheet Table 2 and Section 7.1.

Does the ADS6445MRGCTEP support both internal and external reference modes?

Yes, the ADS6445MRGCTEP supports both internal and external reference configurations. In internal mode, it generates a precise 1.0 V to 2.0 V reference (ΔVREF = 1.0 V ±1.5%) with VCM = 1.5 V. In external mode, it accepts a 1.45–1.55 V reference applied to VCM, enabling system-level reference sharing. Configuration is controlled via the SEN pin voltage or register bit , as detailed in Table 6 and Section 8.2 of the ADS6445MRGCTEP datasheet.

What LVDS interface options does the ADS6445MRGCTEP provide?

The ADS6445MRGCTEP offers flexible LVDS output configuration: 1-wire or 2-wire interface, SDR or DDR bit clock, and 14× or 16× serialization-all selectable via CFG1–CFG2 pins or serial registers. The 2-wire DDR mode halves the serial data rate (e.g., 875 Mbps per pair at 125 MSPS), easing FPGA capture. Internal LVDS termination (100 Ω) and programmable output current further enhance signal integrity without external components.

How is the ADS6445MRGCTEP configured-through pins or registers?

The ADS6445MRGCTEP supports three configuration methods: parallel pin-strapping (CFG1–CFG4, SEN, PDN), serial register programming (via SEN/SCLK/SDATA), or hybrid mode with priority arbitration. Parallel mode enables immediate post-power-up operation without firmware; serial mode allows dynamic reconfiguration. The priority table (Table 4) defines behavior when both interfaces control the same function, ensuring deterministic setup in mixed-use designs.

What thermal performance can be expected from the ADS6445MRGCTEP in a standard PCB layout?

In a JEDEC-standard 4-layer board with 2 oz. copper and thermal pad soldered to ground plane, the ADS6445MRGCTEP achieves θJA = 23.6 °C/W and θJCbot = 0.3 °C/W. At full load (1.65 W), this yields ~39°C junction-to-ambient rise above ambient-well within its 125°C max rating. TI's thermal metrics (Section 5.1) confirm reliable operation up to 105°C ambient with proper heatsinking, supporting deployment in conduction-cooled military chassis.