Texas Instruments TLV2553IDWG4

Overview

TLV2553IDWG4 from Texas Instruments is a 12-bit, 200-KSPS successive-approximation analog-to-digital converter (SAR ADC) with an integrated 11-channel analog multiplexer, on-chip sample-and-hold, and SPI-compatible serial interface. It operates from 2.7 V to 5.5 V, delivers ±1 LSB INL/DNL, and supports unipolar/bipolar output modes in industrial temperature range (–40°C to +85°C). It is used in portable data loggers for multi-sensor voltage monitoring.

For engineers reviewing the TLV2553IDWG4 datasheet, TLV2553IDWG4 pinout, TLV2553IDWG4 application, or TLV2553IDWG4 equivalent, key selection considerations include its 11-channel MUX capability, programmable MSB/LSB-first data format, internal oscillator (2.56–4.15 MHz), self-test modes, and low-power operation (0.9 mA typical at 2.7 V).

Technical Context

The TLV2553IDWG4 implements a switched-capacitor SAR architecture with differential high-impedance reference inputs (REF+, REF–) enabling ratiometric conversion and noise isolation. Its control logic accepts 4-bit address/command via DATA IN synchronized to I/O CLOCK, with CS enabling serial communication and EOC signaling conversion completion.

It integrates an on-chip 14-channel multiplexer selecting among 11 analog inputs (AIN0–AIN10) or three internal self-test voltages, and features configurable power-down modes (software or auto), programmable output data length (8/12/16 bits), and inherent sample-and-hold functionality triggered automatically during conversion.

Key Specifications

Pinout & Package

TLV2553IDWG4 is packaged in a 20-pin SOIC (DW package), 12.80 mm × 7.50 mm body size, with gull-wing leads and standard JEDEC outline. Pin 10 is GND; pin 20 is VCC; pins 1–9 and 11–12 are analog inputs AIN0–AIN10; pin 15 is CS; pin 17 is DATA IN; pin 16 is DATA OUT; pin 18 is I/O CLOCK; pin 19 is EOC; pins 13 and 14 are REF– and REF+; pin 10 is GND.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7822U and TLV2548IPW, TLV2553IDWG4 uniquely combines 11-channel multiplexing, ±1 LSB linearity, three self-test modes, and programmable MSB/LSB-first output-making it optimal for industrial data acquisition where channel density, accuracy, and field verifiability are critical.

Availability

TLV2553IDWG4 is available at Aetrix Electronics and suitable for portable data logging, battery-powered instruments, and process control systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TLV2553IDWG4 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 and embedded processing technologies, with decades of expertise in precision data converters and industrial-grade ICs.

The TLV2553IDWG4 belongs to TI's low-power SAR ADC product line, designed specifically for battery-operated and multi-channel industrial sensing applications demanding high accuracy, integrated signal conditioning, and robust serial interfacing.

FAQ

What is the maximum sampling rate of the TLV2553IDWG4 under 3-V operation?

The TLV2553IDWG4 achieves up to 150 KSPS when operated at VCC = 3 V with I/O CLOCK frequency of 10 MHz. This rate is specified in the Recommended Operating Conditions table and confirmed in Section 1 of the datasheet, where throughput is explicitly derated for lower supply voltages to maintain timing margins and conversion accuracy.

Does the TLV2553IDWG4 support bipolar input voltage ranges?

Yes, the TLV2553IDWG4 supports bipolar output operation through configuration register settings, allowing interpretation of the 12-bit result as signed two's-complement data. However, its analog inputs remain unipolar; true bipolar analog input requires external level-shifting circuitry referenced to REF–.

How does the internal oscillator affect system timing design for the TLV2553IDWG4?

The TLV2553IDWG4 incorporates an internal oscillator (2.56–4.15 MHz depending on VCC) that drives the SAR conversion core, eliminating the need for an external clock source. System timing relies solely on the externally supplied I/O CLOCK for serial communication, decoupling conversion timing from host processor clock domains and simplifying synchronization.

Can the TLV2553IDWG4 perform conversions without external reference components?

Yes, the TLV2553IDWG4 can operate using VCC as the reference by connecting REF+ to VCC and REF– to GND. In this mode, the full-scale range equals VCC, and the device maintains its specified linearity and accuracy. A 0.1-µF capacitor between REF+ and REF– is still required for stability.

What self-test output codes does the TLV2553IDWG4 generate, and how are they selected?

The TLV2553IDWG4 generates three fixed self-test codes: 0 (address 1100), 2048 (address 1011), and 4095 (address 1101). These are selected by loading the corresponding 4-bit address into the command register via DATA IN during the address phase of the SPI transaction, as documented in Table 2 of the datasheet.