Texas Instruments TLV2543IDBRG4

Overview

TLV2543IDBRG4 from Texas Instruments is a 12-bit successive-approximation analog-to-digital converter (ADC) with serial interface, 11-channel analog multiplexer, on-chip sample-and-hold, and built-in self-test modes. It delivers 10-µs conversion time across –40°C to 85°C, supports unipolar/bipolar output formats, and features programmable MSB/LSB-first data transfer and power-down mode. It is used in industrial sensor interfaces requiring high-resolution, low-noise digitization of multiple analog signals.

For engineers reviewing the TLV2543IDBRG4 datasheet, TLV2543IDBRG4 pinout, TLV2543IDBRG4 application, or TLV2543IDBRG4 equivalent, key selection considerations include its 11 analog inputs, 12-bit resolution with ±1 LSB linearity error, EOC-synchronized serial interface, and operation over extended industrial temperature range.

Technical Context

The TLV2543IDBRG4 implements a switched-capacitor successive-approximation architecture with an internal 14-channel analog multiplexer selecting among 11 external inputs or three internal reference test voltages. Its sampling begins on the fourth falling edge of I/O CLOCK and completes on the last falling edge of the selected 8-/12-/16-bit I/O cycle, after which EOC goes low to initiate conversion.

Control is fully serial via three lines: CS (chip select), I/O CLOCK (bidirectional clock), and DATA INPUT (4-bit address + 4-bit control). DATA OUT provides 3-state serial output synchronized to EOC or CS transitions. Reference inputs REF+ and REF– support ratiometric operation and isolation from supply noise.

Key Specifications

Pinout & Package

TLV2543IDBRG4 is housed in a 20-pin SSOP (DB) package with 0.65 mm pitch, optimized for compact industrial PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 12-bit serial ADC applications.

Compared with TLV2543IDBRG4, ADS7822U trades resolution and integration for lower cost and smaller footprint, while TLV2548IDW offers mechanical compatibility at the expense of two analog input channels-making TLV2543IDBRG4 optimal for dense multi-sensor systems needing full 11-channel coverage and on-board diagnostics.

Availability

TLV2543IDBRG4 is available at Aetrix Electronics and suitable for industrial automation, motor control feedback, and portable instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLV2543IDBRG4 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 decades of heritage in precision data converters and industrial-grade ICs.

The TLV2543 series belongs to TI's precision analog portfolio, designed specifically for cost-sensitive yet performance-critical industrial and instrumentation applications demanding reliable multi-channel digitization in harsh environments.

FAQ

What is the operating temperature range for TLV2543IDBRG4?

The TLV2543IDBRG4 is characterized for operation from –40°C to +85°C, making it suitable for extended industrial environments including factory floors, outdoor equipment, and automotive under-hood applications where thermal stability is critical. This rating matches the TLV2543I grade and is validated across all electrical parameters in the official datasheet SLAS096C.

Does TLV2543IDBRG4 require an external reference voltage?

No-TLV2543IDBRG4 supports flexible reference configurations: it can use an external differential reference applied to REF+ and REF–, or operate ratiometrically using VCC as REF+ and GND as REF–. The device does not include an internal reference; however, its differential reference inputs enable high-accuracy scaling independent of supply variations, and the TLV2543IDBRG4 datasheet specifies full performance with externally sourced references.

How many analog input channels does TLV2543IDBRG4 support?

The TLV2543IDBRG4 supports 11 single-ended analog input channels (AIN0 through AIN10), selectable via a 4-bit address in the serial control word. These are routed through an internal 14-channel analog multiplexer that also provides access to three internal self-test voltages. The TLV2543IDBRG4 pinout confirms dedicated pins for all 11 inputs, and the functional block diagram explicitly shows the 14:1 mux feeding the SAR core.

Can TLV2543IDBRG4 interface directly with a microcontroller SPI port?

Yes-TLV2543IDBRG4 uses a 3-wire serial interface (CS, I/O CLOCK, DATA INPUT/OUT) compatible with standard SPI protocols, though it is not strictly SPI-compliant due to its dual-role DATA line and non-standard frame lengths (8/12/16 bits). Most SPI peripherals can emulate its timing with GPIO-controlled CS and configurable clock polarity/phase; the TLV2543IDBRG4 datasheet provides detailed timing diagrams and register maps for seamless firmware integration.

What self-test capabilities does TLV2543IDBRG4 provide?

The TLV2543IDBRG4 includes three hardware self-test modes accessible via dedicated address codes (0xB, 0xC, 0xD): conversion of (VREF+ – VREF–)/2, VREF–, and VREF+, respectively. These produce predictable ideal outputs (0x200, 0x000, 0x3FF in unipolar mode), enabling in-system validation of ADC gain, offset, and linearity without external test equipment-critical for safety-critical or field-deployed instrumentation using TLV2543IDBRG4.