Texas Instruments TLV2553IPWG4

Overview

TLV2553IPWG4 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 linearity error, and supports unipolar/bipolar output modes for precision data acquisition in resource-constrained systems.

For engineers reviewing the TLV2553IPWG4 datasheet, TLV2553IPWG4 pinout, TLV2553IPWG4 application, or TLV2553IPWG4 equivalent, key selection considerations include its 11 analog input channels, programmable MSB/LSB-first data format, built-in self-test modes, and compatibility with low-power battery-operated designs requiring stable 12-bit resolution at up to 200 kSPS.

Technical Context

The TLV2553IPWG4 implements a switched-capacitor SAR architecture with differential high-impedance reference inputs (REF+, REF–), enabling ratiometric conversion and noise isolation. Its internal oscillator (2.56–4.15 MHz) eliminates external clock dependency, and the 4-bit address/command register selects among 11 analog inputs or three self-test voltages.

Control logic synchronizes sampling, conversion, and serial data transfer via CS, I/O CLOCK, and DATA IN signals; EOC asserts upon completion to signal host processors. The device supports 8-/12-/16-clock transfer formats, programmable power-down modes (0.1–1 µA), and configurable output data length (8/12/16 bits).

Key Specifications

Pinout & Package

TSSOP-20 package (6.50 mm × 4.40 mm), lead pitch 0.65 mm, RoHS-compliant, surface-mount.

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, the TLV2553IPWG4 uniquely combines 11-channel multiplexing, three self-test modes, and ±1 LSB linearity in a single TSSOP-20 package - making it optimal for new designs demanding diagnostic integrity and sensor scalability without sacrificing precision.

Availability

TLV2553IPWG4 is available at Aetrix Electronics and suitable for process control monitoring, portable data logging, and battery-powered instrumentation requiring stable component supply across extended production lifecycles.

Supply support for TLV2553IPWG4 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 precision data converters and low-power signal chain solutions.

The TLV2553IPWG4 belongs to TI's low-power precision SAR ADC product line, designed specifically for battery-operated and industrial measurement systems needing integrated multiplexing, self-test, and robust serial interfacing.

FAQ

What is the maximum sampling rate of the TLV2553IPWG4?

The TLV2553IPWG4 achieves up to 200 KSPS at VCC = 5 V with I/O CLOCK = 15 MHz, and 150 KSPS at VCC = 3 V with I/O CLOCK = 10 MHz. Conversion time is determined by internal oscillator frequency (2.56–4.15 MHz) and scales with selected I/O format (8/12/16 clocks). The TLV2553IPWG4 datasheet specifies t_convert = 13.5 × (1/f_OSC) + 25 ns, confirming deterministic timing for real-time firmware scheduling.

Does the TLV2553IPWG4 require an external clock source?

No, the TLV2553IPWG4 includes an on-chip conversion clock oscillator operating at 2.56 MHz (VCC = 2.7–3.6 V) or 4.15 MHz (VCC = 4.5–5.5 V), eliminating the need for external timing components. The I/O CLOCK signal remains required for serial interface synchronization, but the core ADC timing is fully self-contained - simplifying design and improving reliability in space-constrained layouts.

How many analog input channels does the TLV2553IPWG4 support?

The TLV2553IPWG4 supports 11 single-ended analog input channels (AIN0 through AIN10), managed by an integrated 14-channel multiplexer that also provides access to three internal self-test voltages. This configuration allows flexible signal routing without external analog switches, and the TLV2553IPWG4 pinout maps each AIN directly to dedicated package pins for low-noise layout implementation.

What self-test capabilities does the TLV2553IPWG4 provide?

The TLV2553IPWG4 offers three built-in self-test modes activated via DATA IN command: zero-scale (output code 0), mid-scale (2048), and full-scale (4095). These modes apply known internal reference voltages to verify ADC linearity, offset, and gain performance without external test equipment - a critical feature for field-deployed systems requiring periodic functional verification, such as in the TLV2553IPWG4-based portable data loggers.

Is the TLV2553IPWG4 compatible with standard SPI interfaces?

Yes, the TLV2553IPWG4 implements a SPI-compatible serial interface with CPOL = 0 and CPHA = 0, supporting clock frequencies up to 15 MHz at 5 V. Its DATA IN, DATA OUT, I/O CLOCK, and CS signals align with standard SPI timing conventions, enabling direct connection to microcontrollers like MSP430, C2000, and ARM Cortex-M families without protocol translation - a key advantage confirmed in TI's TLV2553IPWG4 application notes and reference schematics.