Texas Instruments TLC1514IPW

Overview

TLC1514IPW from Texas Instruments is a 10-bit, 4-channel, serial analog-to-digital converter (ADC) operating at up to 400 kSPS with built-in 4-V reference and 8× FIFO. It features SPI/DSP-compatible serial interface (SCLK up to 20 MHz), differential/nonlinearity error ±0.5 LSB max, and hardware/software/auto power-down modes. Used in embedded data acquisition systems requiring low-power, multi-channel sampling with flexible timing control.

For engineers reviewing the TLC1514IPW datasheet, TLC1514IPW pinout, TLC1514IPW application, or TLC1514IPW equivalent, this page delivers verified technical context, real-world use scenarios, validated alternative parts, and supply support for industrial sensor interfaces, motor control feedback loops, and portable instrumentation designs.

Technical Context

The TLC1514IPW implements a 10-bit successive approximation register (SAR) architecture with charge redistribution DAC and integrated analog multiplexer. It supports four conversion modes-single-shot, repeat, sweep, and repeat-sweep-each configurable via a 12-bit configuration register (CFR) and triggered by CS, FS, or CSTART.

Sampling is programmable (12 or 24 SCLK cycles) or asynchronous via CSTART pin; conversion clock derives directly from SCLK or SCLK/2. The device includes an on-chip 4-V reference, accepts external reference, and provides pseudo-differential input capability using A1 as MINUS input when enabled.

Key Specifications

Pinout & Package

Package: 16-pin TSSOP (PW) - 5.0 mm × 4.4 mm, 0.65 mm pitch, surface-mount, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10-bit serial ADC applications.

Compared with TLC1514IPW, TLC1543CN offers more analog inputs but sacrifices speed, FIFO, and flexible sampling control; ADS7822U delivers higher resolution but lacks multi-channel integration and autonomous power management-making TLC1514IPW optimal for balanced performance in compact, battery-aware systems.

Availability

TLC1514IPW is available at Aetrix Electronics and suitable for industrial sensor interfaces, motor control feedback loops, and portable instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TLC1514IPW 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 digital signal technologies with broad industrial and automotive portfolio coverage.

The TLC1514IPW belongs to TI's legacy precision data acquisition family designed for cost-sensitive, low-power, multi-channel analog front-ends in embedded control and measurement systems.

FAQ

What is the maximum sampling rate supported by the TLC1514IPW?

The TLC1514IPW supports a maximum throughput of 400 kSPS under specified conditions (VCC = 5 V, internal reference, normal sampling). This rate assumes optimal timing alignment and accounts for conversion time plus serial readout overhead. Actual achievable rate depends on host interface speed, selected sampling period (12 or 24 SCLK cycles), and whether FIFO readback is interleaved. For sustained 400 kSPS operation, SCLK must be ≥20 MHz and system timing must avoid FIFO overflow in sweep modes.

Does the TLC1514IPW support pseudo-differential input mode?

Yes, the TLC1514IPW supports pseudo-differential input mode via configuration bit CFR.D7. When enabled, A1 serves as the common-mode (MINUS) input for channels A0–A3, allowing rejection of ground noise up to 0.2 V peak-to-peak. This mode reduces effective channel count to three usable inputs (A0, A2, A3) since A1 is reserved for the differential reference path. The mode is confirmed in the functional description and CFR bit definitions of the SLAS252 datasheet.

How does the CSTART pin function in the TLC1514IPW?

The CSTART pin on the TLC1514IPW provides hardware-controlled asynchronous sampling initiation. A falling edge starts the sampling period; a rising edge ends sampling and triggers conversion. This allows precise, SCLK-independent timing control-critical for high-impedance sources or synchronized multi-device acquisition. CSTART remains active even when CS is high, and its minimum low time is 800 ns. Its behavior is fully documented in the "extended sampling" section and timing diagrams of the SLAS252 datasheet.

Can the TLC1514IPW operate with an external reference voltage?

Yes, the TLC1514IPW supports external reference operation via REFP and REFM pins. Setting CFR.D11 = 0 selects external reference mode, enabling use of precision references (e.g., REF5025) for improved absolute accuracy or wider input range. When using external reference, decoupling requires both 10 µF and 0.1 µF capacitors between REFP and REFM. Internal 4-V reference remains available but is disabled in external mode.

What package type is used for the TLC1514IPW?

The TLC1514IPW uses a 16-pin TSSOP (Thin Shrink Small Outline Package), designated "PW" in TI's ordering nomenclature. It measures 5.0 mm × 4.4 mm with 0.65 mm lead pitch and is RoHS-compliant. This package is explicitly listed in the "AVAILABLE OPTIONS" table of SLAS252 and matches the pinout diagram labeled "16-TSSOP (PW)" for the TLC1514 variant.