Texas Instruments TLV2553IDWR

Overview

TLV2553IDWR 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). Used for precision data acquisition in portable instrumentation.

For engineers reviewing the TLV2553IDWR datasheet, TLV2553IDWR pinout, TLV2553IDWR application, or TLV2553IDWR equivalent, key selection criteria include its 11 analog input channels, programmable MSB/LSB-first output, built-in self-test modes, and low-power operation down to 0.1 µA in software power-down mode.

Technical Context

The TLV2553IDWR 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, then shifts out 12-bit conversion results on DATA OUT - supporting 8-, 12-, or 16-clock transfer formats. EOC pin signals completion, and CS enables/disables serial interface and resets internal counters.

Key Specifications

Pinout & Package

TLV2553IDWR is housed in a 20-pin SOIC (DW package), 12.80 mm × 7.50 mm body size, with standard gull-wing lead form and surface-mount compatibility.

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, TLV2553IDWR uniquely combines 11 analog inputs, EOC interrupt signaling, and three self-test modes in a single SOIC-20 package - making it optimal for compact, self-diagnosing industrial data acquisition where channel count and functional safety matter.

Availability

TLV2553IDWR is available at Aetrix Electronics and suitable for process control, portable data logging, and battery-powered instruments requiring stable component supply, long-term lifecycle support, and guaranteed industrial-temperature-grade performance.

Supply support for TLV2553IDWR 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 TLV2553IDWR belongs to TI's TLV low-power SAR ADC product line, designed specifically for battery-operated and thermally constrained industrial sensing applications demanding high resolution, integrated multiplexing, and robust serial interfacing.

FAQ

What is the maximum sampling rate of the TLV2553IDWR?

The TLV2553IDWR 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 supply voltage - critical for timing budgeting in real-time firmware. The TLV2553IDWR datasheet specifies exact timing windows for setup, hold, and delay parameters under both conditions.

Does TLV2553IDWR require an external reference voltage?

No, TLV2553IDWR supports both internal and external reference configurations. When REF+ and REF− are tied to VCC and GND respectively, it uses the supply rails as reference. For higher accuracy, an external reference (e.g., 2.5 V or 4.096 V) can be applied to REF+ and REF− - the device specifies 1.9 V to VCC differential range and requires a 0.1-µF capacitor between REF+ and REF− in external mode. This flexibility is documented in Section 6.6 of the TLV2553IDWR datasheet.

How many analog input channels does TLV2553IDWR support?

The TLV2553IDWR supports 11 single-ended analog input channels (AIN0 through AIN10), as confirmed in the device description, pin functions table, and block diagram of the official datasheet. These are internally multiplexed to the 12-bit SAR core. Though the pinout shows 14 labeled analog terminals, three are reserved for internal self-test voltages - only AIN0–AIN10 are user-accessible analog inputs.

What power-saving modes are available on TLV2553IDWR?

TLV2553IDWR offers two power-down modes: software power-down (0.1 µA typical) activated via command register, and auto power-down (0.1–10 µA) triggered automatically after conversion completes. Both reduce ICC to microamp levels while preserving configuration state. These modes are validated across –40°C to +85°C and detailed in Section 6.5 Electrical Characteristics of the TLV2553IDWR datasheet.

Is TLV2553IDWR pin-compatible with other TI SAR ADCs like TLV2548?

No, TLV2553IDWR is not pin-compatible with TLV2548IPW or TLV2544IDW. While all are 20-pin SOIC devices, TLV2553IDWR assigns EOC to Pin 19 and uses Pin 12 for AIN10, whereas TLV2548IPW repurposes Pin 19 as BUSY and omits AIN10. Pin function mapping differs per device - verified against TI's official package drawings and pin configuration tables for each part number.