Texas Instruments TLV2553IPW

Overview

TLV2553IPW from Texas Instruments is a 12-bit, 200-KSPS successive-approximation analog-to-digital converter (SAR ADC) with 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 in industrial temperature range (–40°C to 85°C), enabling precision data acquisition in portable instrumentation.

For engineers reviewing the TLV2553IPW datasheet, TLV2553IPW pinout, TLV2553IPW application, or TLV2553IPW equivalent, key selection criteria include its 11 analog input channels, programmable MSB/LSB-first data format, built-in self-test modes, and compatibility with low-power microcontroller serial ports requiring ≤15 MHz I/O clock (CPOL=0, CPHA=0).

Technical Context

The TLV2553IPW 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) drives conversion timing without external clock dependency.

Control logic accepts 4-bit address/command via DATA IN synchronized to I/O CLOCK rising edges, then shifts out 12-bit conversion results on DATA OUT synchronized to falling edges. EOC pin asserts low upon completion, supporting interrupt-driven host polling.

Key Specifications

Pinout & Package

TSSOP-20 package (6.50 mm × 4.40 mm) with exposed pad not electrically connected; RoHS-compliant, moisture-sensitive level 2a per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7822U and MCP3201-I/P, the TLV2553IPW uniquely integrates 11-channel multiplexing, three self-test modes, and configurable 8/12/16-bit transfer cycles - making it optimal for compact, feature-rich embedded data acquisition where channel density and diagnostic capability are critical.

Availability

TLV2553IPW is available at Aetrix Electronics and suitable for process control, portable data logging, and battery-powered instruments requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLV2553IPW 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 low-power signal chain solutions.

The TLV2553IPW belongs to TI's low-power SAR ADC product line, designed specifically for portable and industrial measurement systems demanding high resolution, integrated analog front-end functionality, and robust serial interfacing.

FAQ

What is the maximum sampling rate of the TLV2553IPW?

The TLV2553IPW achieves up to 200 KSPS at VCC = 5 V with I/O CLOCK = 15 MHz. At 3 V operation, the maximum throughput drops to 150 KSPS due to internal oscillator frequency reduction and timing margin constraints. This rate assumes full 12-bit conversion with external reference and accounts for minimum acquisition time of 1000 ns at 1 kΩ source impedance.

Does the TLV2553IPW require an external clock source?

No, the TLV2553IPW does not require an external clock source. It incorporates an internal oscillator operating at 2.56 MHz (2.7–3.6 V) or 4.15 MHz (4.5–5.5 V), which drives the SAR conversion process. The I/O CLOCK signal is used solely for serial interface synchronization, not for core ADC timing.

How many analog input channels does the TLV2553IPW support?

The TLV2553IPW supports 11 analog input channels (AIN0 through AIN10), selectable via its integrated 14-channel multiplexer. Although the multiplexer has 14 physical paths, three are reserved for internal self-test voltages (zero-scale, full-scale, mid-scale), leaving 11 dedicated for external analog signals.

Can the TLV2553IPW operate with a 3.3 V supply?

Yes, the TLV2553IPW is fully specified for operation from 2.7 V to 5.5 V, including standard 3.3 V rails. At 3.3 V, it maintains 12-bit resolution and ±1 LSB linearity, with throughput reduced to 150 KSPS and internal oscillator frequency at approximately 3.27 MHz. REF+ can be tied to VCC or an external 2.5 V reference.

What self-test functions are available on the TLV2553IPW?

The TLV2553IPW provides three built-in self-test modes: zero-scale (output code 0), full-scale (output code 4095), and mid-scale (output code 2048). These are selected by writing specific 4-bit address values (1100b, 1101b, and 1011b respectively) to the DATA IN register, enabling in-system verification without external stimulus.