Texas Instruments TLV2553IPWRG4

Overview

TLV2553IPWRG4 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 space-constrained systems.

For engineers reviewing the TLV2553IPWRG4 datasheet, TLV2553IPWRG4 pinout, TLV2553IPWRG4 application, or TLV2553IPWRG4 equivalent, key selection criteria include its 11 analog input channels, programmable MSB/LSB-first output, built-in self-test modes, and compatibility with low-power microcontroller serial ports using CS, I/O CLOCK, DATA IN, and DATA OUT signals.

Technical Context

The TLV2553IPWRG4 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 clocking.

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 asserts low upon completion, supporting interrupt-driven host polling.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7822U and TLV2548IPW, the TLV2553IPWRG4 uniquely combines 11-channel multiplexing, programmable output format, and three self-test modes-making it optimal for field-deployable instruments requiring validation, flexibility, and channel density in a single TSSOP-20 footprint.

Availability

TLV2553IPWRG4 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 TLV2553IPWRG4 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 TLV2553IPWRG4 belongs to TI's low-power SAR ADC product line, designed specifically for portable, battery-operated, and space-constrained industrial and medical sensing applications demanding accuracy, integration, and energy efficiency.

FAQ

What is the maximum sampling rate of the TLV2553IPWRG4 under 3-V operation?

The TLV2553IPWRG4 achieves up to 150 KSPS when operated at VCC = 3 V with VREF+ = 2.5 V and I/O CLOCK frequency = 10 MHz. This reduced throughput versus 5-V operation reflects internal oscillator scaling and timing margin adjustments to maintain ±1 LSB linearity across the full –40°C to 85°C temperature range. The TLV2553IPWRG4 maintains consistent 12-bit resolution and self-test functionality at this rate.

Does the TLV2553IPWRG4 require an external crystal or clock source?

No, the TLV2553IPWRG4 integrates a self-contained switched-capacitor oscillator with frequency ranging from 2.56 MHz (at 2.7 V) to 4.15 MHz (at 5.5 V). This eliminates the need for external crystals, oscillators, or clock generators, simplifying layout and reducing BOM count. The internal oscillator directly controls conversion timing and requires no user configuration or trimming.

How many analog input channels does the TLV2553IPWRG4 support, and what are their designations?

The TLV2553IPWRG4 supports 11 single-ended analog input channels designated AIN0 through AIN10. These are physically mapped to pins 1–9, 11, and 12 in the TSSOP-20 package. The device also includes a 14-channel internal multiplexer capable of selecting among these 11 inputs plus three built-in self-test voltages, all controlled via the 4-bit address register.

Can the TLV2553IPWRG4 operate with a bipolar input range?

Yes, the TLV2553IPWRG4 supports bipolar operation by applying appropriate voltages to REF+ and REF−. When REF− is set to a positive voltage (e.g., 1.25 V) and REF+ to a higher voltage (e.g., 3.75 V), the input range becomes –1.25 V to +1.25 V relative to REF−. The device's differential reference architecture enables true bipolar conversion without external level-shifting circuitry, and the TLV2553IPWRG4 retains full 12-bit resolution in this mode.

What self-test modes are available on the TLV2553IPWRG4, and how are they activated?

The TLV2553IPWRG4 provides three factory-calibrated self-test modes: zero-scale (output code 0x000), full-scale (0xFFF), and mid-scale (0x7FF). These are selected by writing specific 4-bit address values (1100b, 1101b, and 1011b respectively) to the command register via DATA IN. Activation occurs during the next conversion cycle, allowing in-system functional verification without external test equipment - a capability confirmed in the TLV2553IPWRG4 datasheet Section 3 and Table 2.