Texas Instruments THS12082IDAR

Overview

THS12082IDAR 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 5-V analog/3.3-V digital supply operation. It supports single-ended or differential input configurations, delivers 66 dB SNR+D at 2 MHz, and targets high-speed DSP front-ends in radar and communications systems.

For engineers reviewing the THS12082IDAR datasheet, THS12082IDAR pinout, THS12082IDAR application, or THS12082IDAR equivalent, key selection considerations include simultaneous dual-channel sampling capability, internal 1.5 V / 3.5 V reference accuracy (±5%, 50 ppm/°C), FIFO-triggered data read protocol, and compatibility with µC/DSP parallel interfaces operating at 3-V or 5-V logic levels.

Technical Context

The THS12082IDAR employs a multistage pipelined ADC architecture with output error correction to guarantee no missing codes across –40°C to 85°C. Its dual-input sample-and-hold circuit enables true simultaneous acquisition of two signals-either as independent single-ended channels or one differential pair-without inter-channel skew.

Conversion is supported in two modes: single-conversion (triggered by CONVST, internally clocked at ~8 MHz) and continuous-conversion (driven by external CONV_CLK up to 8 MHz). The 16-word circular FIFO buffers converted data and generates DATA_AV interrupts based on programmable trigger levels (1, 4, 8, or 14 words), reducing processor overhead in real-time acquisition systems.

Key Specifications

Pinout & Package

TSSOP-32 (DA package), 7.0 mm × 4.4 mm body, 0.65 mm pitch, thermally enhanced 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, the THS12082IDAR uniquely balances 8 MSPS dual-channel simultaneity, integrated FIFO buffering, and parallel µC/DSP interface - making it optimal for cost- and latency-sensitive embedded radar and communications platforms requiring deterministic real-time data flow.

Availability

THS12082IDAR is available at Aetrix Electronics and suitable for radar signal acquisition, communications baseband processing, and industrial motor control feedback requiring stable component supply across extended temperature ranges.

Supply support for THS12082IDAR 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.

The THS12082IDAR belongs to TI's high-speed data acquisition product line, designed specifically for real-time, low-latency, simultaneous-sampling applications in radar, communications, and industrial control systems.

FAQ

What is the operating temperature range for the THS12082IDAR?

The THS12082IDAR is characterized for operation from –40°C to +85°C, meeting industrial and automotive under-hood requirements. This rating applies specifically to the 'I' grade device in the TSSOP-32 (DA) package, and all electrical specifications-including INL, SINAD, and power consumption-are guaranteed across this full range.

Does the THS12082IDAR support differential input configuration?

Yes, the THS12082IDAR supports differential input mode using the AINP and AINM pins. In this configuration, it delivers 65 dB SINAD at 2 MHz and 96 MHz full-power bandwidth. The internal reference (REFP = 3.5 V, REFM = 1.5 V) establishes a 2-V differential span, and external references can be applied via REFP/REFM if higher dc accuracy is required.

How does the FIFO in the THS12082IDAR reduce processor load?

The THS12082IDAR's 16-word FIFO stores converted samples and asserts the DATA_AV signal when a user-programmed trigger level (1, 4, 8, or 14 words) is reached. This allows the host processor to read blocks of data in batch mode instead of servicing per-sample interrupts - cutting interrupt frequency by up to 14× and freeing CPU cycles for real-time signal processing tasks.

Can the THS12082IDAR operate with a 3.3-V analog supply?

No, the THS12082IDAR requires a 5-V analog supply (AVDD = 4.75 V to 5.25 V) per its recommended operating conditions. The analog section is not rated for 3.3-V operation; using lower voltage risks violating absolute maximum ratings and invalidating AC performance specs such as SNR and full-power bandwidth.

What is the purpose of the RA0/D10 and RA1/D11 pins on the THS12082IDAR?

On the THS12082IDAR, RA0/D10 and RA1/D11 serve dual functions: as data bits D10 and D11 during normal conversion read/write operations, and as address lines RA0 and RA1 when writing to the internal 10-bit control registers CR0 and CR1. This multiplexing enables full configuration of sampling mode, FIFO trigger, reference source, and power-down via the same parallel bus.