Texas Instruments TLV2553IPWRQ1

Overview

TLV2553IPWRQ1 from Texas Instruments is an automotive-qualified 12-bit 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 delivers up to 200-KSPS throughput at 5 V and 150-KSPS at 3 V, features ±1 LSB linearity error, programmable MSB/LSB-first output, and operates across –40°C to +85°C for engine control and battery monitoring systems.

For engineers reviewing the TLV2553IPWRQ1 datasheet, TLV2553IPWRQ1 pinout, TLV2553IPWRQ1 application, or TLV2553IPWRQ1 equivalent, key selection considerations include its 11 analog input channels, unipolar/bipolar operation mode, internal oscillator (2.56–4.15 MHz), software/auto power-down capability, and AEC-Q100 Grade 2 qualification for automotive use.

Technical Context

The TLV2553IPWRQ1 implements a switched-capacitor SAR architecture with differential high-impedance reference inputs (REF+, REF–) enabling ratiometric conversion and noise isolation. Its internal 14-channel multiplexer selects among 11 analog inputs or three self-test voltages via configuration register 1, with automatic sample-and-hold triggered by I/O CLOCK edges.

Communication uses a 3-wire SPI-compatible interface (CS, I/O CLOCK, DATA IN/OUT) supporting 8-, 12-, or 16-bit data formats. The EOC pin signals conversion completion, and the device supports programmable output data length, MSB/LSB-first ordering, and both external and internal reference configurations.

Key Specifications

Pinout & Package

TSSOP-20 package (4.40 mm × 6.50 mm), thermally optimized for automotive PCBs with exposed pad option (not applicable to TLV2553IPWRQ1 per datasheet); RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7953QDBTRQ1 and MAX11131ATJ+T, TLV2553IPWRQ1 offers optimal balance of 11-channel count, 200-KSPS speed, differential reference capability, and compact TSSOP-20 footprint-making it ideal for cost-sensitive, space-constrained automotive body and chassis modules.

Availability

TLV2553IPWRQ1 is available at Aetrix Electronics and suitable for engine control units, electric power steering systems, and onboard chargers requiring stable component supply across automotive production lifecycles.

Supply support for TLV2553IPWRQ1 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 automotive ICs, with decades of automotive qualification expertise and broad manufacturing scale.

The TLV2553-Q1 product line delivers automotive-grade data converters optimized for functional safety, low power, and robust operation in harsh environments-designed specifically for engine management, battery monitoring, and ADAS subsystems.

FAQ

What is the maximum sampling rate of the TLV2553IPWRQ1 under automotive operating conditions?

The TLV2553IPWRQ1 achieves up to 200 KSPS at VCC = 4.5–5.5 V and TA = –40°C to +85°C, and 150 KSPS at VCC = 2.7–3.6 V. This is enabled by its internal oscillator (up to 4.15 MHz) and optimized SAR architecture. The TLV2553IPWRQ1 maintains this performance across its full qualified temperature range without derating.

Does the TLV2553IPWRQ1 support both unipolar and bipolar input configurations?

Yes, the TLV2553IPWRQ1 supports unipolar operation (REF– tied to GND, input 0 V to REF+) and bipolar operation (REF– biased above GND, input range centered at mid-scale). This is controlled via configuration register settings and does not require external circuitry. The TLV2553IPWRQ1 datasheet specifies valid input voltage limits relative to REF+ and REF–.

How does the built-in self-test function work in the TLV2553IPWRQ1?

The TLV2553IPWRQ1 provides three factory-trimmed self-test modes activated by writing address codes 0x0B, 0x0C, or 0x0D to the command register. These output fixed digital codes: 2048 (mid-scale), 0 (zero-scale), and 4095 (full-scale), respectively. The TLV2553IPWRQ1 uses these to verify ADC functionality and reference path integrity during startup or periodic diagnostics.

Can the TLV2553IPWRQ1 operate with an external reference voltage?

Yes, the TLV2553IPWRQ1 accepts external differential references applied to REF+ and REF– pins. When using external references, a 0.1-μF capacitor must be placed between REF+ and REF–. The TLV2553IPWRQ1 supports reference voltage differences from 1.9 V to VCC, with typical operation at 2.5 V or 4.096 V for enhanced resolution in sensor applications.

What power-saving modes are available in the TLV2553IPWRQ1?

The TLV2553IPWRQ1 offers two power-down modes: software power-down (ICC ≤ 1 μA) initiated via command register, and auto power-down (ICC ≤ 10 μA) activated automatically after conversion completes. Both reduce supply current significantly versus active operation (0.9–1.2 mA), making the TLV2553IPWRQ1 suitable for battery-backed automotive modules requiring ultra-low quiescent current.