Texas Instruments THS12082CDAR

Overview

THS12082CDAR from Texas Instruments is a 12-bit, 8 MSPS simultaneous-sampling analog-to-digital converter (ADC) with dual-channel pipelined architecture, integrated 16-word FIFO, and 5-V analog / 3.3-V digital supply operation. It supports single-ended or differential input configurations, delivers 65 dB SINAD at 2 MHz, ±1 LSB DNL, and operates across 0°C to 70°C for radar front-ends and high-speed DSP acquisition systems.

For engineers reviewing the THS12082CDAR datasheet, THS12082CDAR pinout, THS12082CDAR application, or THS12082CDAR equivalent, key selection criteria include simultaneous dual-channel sampling rate, internal/external reference flexibility, FIFO-triggered data read timing, and TSSOP-32 package compatibility with 3.3-V/5-V mixed-signal interfacing.

Technical Context

The THS12082CDAR employs an 8-stage pipelined ADC architecture with output error correction logic ensuring no missing codes over temperature. Its dual analog inputs are sampled simultaneously and configurable via control registers CR0/CR1 for single-ended or differential modes, with auto-scan sequencing for two-input operation.

Conversion is supported in two modes: single-conversion (internally clocked, up to 4 MSPS per channel) and continuous-conversion (externally clocked, up to 8 MSPS per channel with one input or 4 MSPS with two). The integrated FIFO uses programmable trigger levels (1/4/8/14) and DATA_AV signaling to synchronize processor reads without tight timing constraints.

Key Specifications

Pinout & Package

TSSOP-32 (DA package), 7.0 mm × 4.4 mm body, 0.65 mm pitch, thermally enhanced with exposed pad (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS8364IPAG and AD9222ASTZ, THS12082CDAR uniquely combines true simultaneous dual-channel 8 MSPS sampling, on-chip FIFO with programmable triggers, and parallel µC/DSP interface - reducing system latency and FPGA resource usage in embedded radar and motor control designs.

Availability

THS12082CDAR is available at Aetrix Electronics and suitable for radar signal acquisition, high-speed motor control, and communications baseband processing requiring stable component supply across industrial temperature ranges.

Supply support for THS12082CDAR 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 company specializing in analog and embedded processing technologies, with leadership in data converters, power management, and signal chain solutions.

The THS12082CDAR belongs to TI's high-speed precision ADC product line, designed specifically for demanding real-time acquisition in radar, imaging, and industrial automation where simultaneous sampling, low latency, and system-level integration are critical.

FAQ

What is the maximum sampling rate per channel for THS12082CDAR in continuous conversion mode?

The THS12082CDAR achieves 8 MSPS per channel when configured for a single analog input in continuous conversion mode. With two simultaneously sampled inputs (either two single-ended or one differential pair), the maximum rate drops to 4 MSPS per channel due to time-division multiplexing within the pipeline architecture. This behavior is explicitly defined in Table 1 of the datasheet and confirmed by timing diagrams in Figures 2 and 3.

Does THS12082CDAR support both single-ended and differential input configurations?

Yes, THS12082CDAR supports both configurations. Its two analog inputs (AINP/AINM) can be independently selected and programmed via control registers CR0/CR1 to operate as two single-ended channels or one differential channel. Input configuration affects full-scale range, noise performance (SINAD degrades ~2 dB in single-ended mode), and bandwidth (54 MHz vs. 96 MHz small-signal BW).

How does the FIFO in THS12082CDAR reduce processor overhead?

The THS12082CDAR's 16-word FIFO buffers converted data and generates DATA_AV interrupts at user-defined trigger levels (1/4/8/14 words). This allows the host processor to read data in bursts rather than servicing an interrupt per sample - cutting interrupt frequency by up to 16× and freeing CPU cycles for real-time computation. The FIFO operates as a circular buffer with independent read/write pointers managed entirely in hardware.

Can THS12082CDAR use an external reference voltage instead of the internal one?

Yes, THS12082CDAR accepts external references via REFP and REFM pins. When control register CR0 bit VREF = 1, the device disables its internal 3.5 V/1.5 V reference and uses externally applied voltages - enabling custom full-scale ranges (e.g., ±2.5 V differential) and improved dc accuracy (<10 ppm/°C with precision references). Internal reference remains active otherwise, with 50 ppm/°C drift and ±5% initial tolerance.

What package type and pin count does THS12082CDAR use?

THS12082CDAR uses a 32-pin TSSOP package (DA suffix), measuring 7.0 mm × 4.4 mm with 0.65 mm lead pitch. It features separate analog (AVDD/AGND), digital (DVDD/DGND), and buffer (BVDD/BGND) supply domains, plus dedicated reference (REFP/REFM/REFOUT), control (CS0/CS1/WR/RD/RESET), and data (D0–D11) terminals - all documented in the DA package top-view drawing and terminal function table.