Texas Instruments THS12082CDA

Overview

THS12082CDA from Texas Instruments is a 12-bit, 8 MSPS simultaneous-sampling analog-to-digital converter (ADC) with dual analog inputs, integrated 16-word FIFO, and pipelined architecture. It supports single-ended or differential input configurations, operates on a 5-V analog supply and 3.3-V digital interface, and delivers 66 dB SINAD at 2 MHz for radar front-ends and high-speed DSP acquisition.

For engineers reviewing the THS12082CDA datasheet, THS12082CDA pinout, THS12082CDA application, or THS12082CDA equivalent, key selection considerations include simultaneous dual-channel sampling capability, internal 3.5 V/1.5 V reference accuracy (±5%, 50 ppm/°C), FIFO-triggered interrupt support via DATA_AV, and compatibility with µC/DSP parallel interfaces requiring CS0/CS1/RD/WR control.

Technical Context

The THS12082CDA employs an 8-stage pipelined ADC architecture with output error correction logic to guarantee no missing codes across 0°C to 70°C. Its dual simultaneous sample-and-hold stages feed into a shared conversion pipeline, enabling true time-aligned digitization of two channels.

It supports two distinct conversion modes: single-conversion mode using an internal oscillator (up to 4 MSPS per channel), and continuous-conversion mode driven by an external CONV_CLK (up to 8 MSPS per channel with one input or 4 MSPS with two). The 16-word circular FIFO buffers data with programmable trigger levels (1, 4, 8, or 14 words) and overflow detection via OV_FL.

Key Specifications

Pinout & Package

TSSOP-32 (DA package), 32-pin thin shrink small-outline package with 0.65 mm pitch; thermally enhanced for analog performance stability in industrial environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS8364IPAG and AD9222ASTZ, the THS12082CDA uniquely balances 8 MSPS dual-channel simultaneity, integrated FIFO, internal reference, and parallel µC interface-making it the only option that avoids external FIFO logic, reference ICs, or high-speed serial interface firmware complexity in mid-speed industrial digitizers.

Availability

THS12082CDA is available at Aetrix Electronics and suitable for radar signal acquisition, high-speed motor control, communications baseband processing, and industrial data acquisition requiring stable component supply across extended production lifecycles.

Supply support for THS12082CDA 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 connectivity technologies, with over 50 years of innovation in precision data converters and signal chain solutions.

The THS12082CDA belongs to TI's high-speed precision ADC product line, designed specifically for applications demanding simultaneous multi-channel sampling, low-latency FIFO buffering, and seamless integration with microcontrollers and DSPs in industrial and defense systems.

FAQ

What is the operating temperature range for the THS12082CDA?

The THS12082CDA is characterized for operation from 0°C to 70°C, as confirmed by its "C" grade suffix and the recommended operating conditions table in the SLAS271B datasheet. This commercial-grade rating makes it suitable for indoor industrial equipment, test instrumentation, and non-automotive embedded systems where ambient temperatures remain within this envelope. The THS12082CDA does not support extended temperature ranges like the –40°C to 85°C THS12082IDA variant.

Does the THS12082CDA require an external reference voltage?

No, the THS12082CDA includes an internal reference generating 3.5 V (REFP) and 1.5 V (REFM) with ±5% accuracy and 50 ppm/°C drift, sufficient for most industrial applications. An external reference may be applied via REFP/REFM pins only if tighter dc accuracy or lower temperature drift is required - but doing so disables the internal reference and requires proper bypassing per the datasheet. The THS12082CDA functions fully with internal reference enabled by default.

How does the FIFO in the THS12082CDA reduce processor overhead?

The THS12082CDA's 16-word FIFO allows the host processor to read multiple samples per interrupt instead of servicing each conversion individually. By programming the trigger level (e.g., 4 or 8 words), the DATA_AV signal asserts only after that many samples are buffered - cutting interrupt frequency by up to 8× compared to per-sample polling. This directly lowers CPU utilization in real-time control loops and simplifies firmware buffer management for the THS12082CDA.

Can the THS12082CDA sample two single-ended inputs simultaneously?

Yes, the THS12082CDA supports simultaneous sampling of two independent single-ended analog inputs (e.g., AINP of Channel A and AINP of Channel B) via its auto-scan mode and configurable CHSEL bits in Control Register 0. In this configuration, maximum throughput is 4 MSPS per channel in continuous mode, maintaining precise inter-channel timing alignment - a core capability explicitly documented in Table 1 and the functional description of the THS12082CDA.

What digital interface standards does the THS12082CDA support?

The THS12082CDA implements a parallel µC/DSP interface with standard control signals: CS0 (active-low chip select), CS1 (active-high enable), RD (read strobe), and WR (programmable as R/W or write-only). It is compatible with both 3-V and 5-V digital logic families, supporting direct connection to TI C2000™ DSCs, ARM Cortex-M microcontrollers, and legacy DSPs without level shifters - a key interoperability feature verified in the "3-V or 5-V Digital Interface Compatible" datasheet feature list for the THS12082CDA.