Texas Instruments TLV2548EVM

Overview

TLV2548EVM from Texas Instruments is an evaluation module designed to accelerate development and validation of the TLV2548 12-bit, 200-KSPS SAR analog-to-digital converter. It provides full access to all TLV2548 pins, supports SPI/DSP serial interfaces up to 20 MHz, integrates on-board reference and conversion clock, and enables hardware- or software-controlled sampling with programmable auto-channel sweep for rapid prototyping in data acquisition systems.

For engineers reviewing the TLV2548EVM datasheet, TLV2548EVM pinout, TLV2548EVM application, or TLV2548EVM equivalent, this module delivers immediate signal chain evaluation of the TLV2548's differential/INL ±1 LSB performance, 70 dB SNDR at 12 kHz, 8× FIFO buffering, and extended sampling via CSTART - critical for industrial sensor monitoring, motor control feedback, and embedded test instrumentation.

Technical Context

The TLV2548EVM implements a complete, ready-to-run evaluation platform for the TLV2548 ADC, featuring direct connection to host microcontrollers or DSPs via standard 4-wire SPI (CPOL=0, CPHA=0) or TI TMS320-compatible frame-sync interface. It exposes all 20 pins of the TLV2548 in DW/PW package, including dedicated CSTART, EOC/INT, FS, and REFP/REFM terminals for precise timing and reference control.

Board-level design includes decoupling capacitors (10 µF + 0.1 µF) across REFP–REFM, configurable power supply (2.7 V to 5.5 V), jumper-selectable internal/external reference, and header-accessible analog inputs A0–A7. The module supports all four TLV2548 conversion modes - one-shot, repeat, sweep, and repeat-sweep - with real-time FIFO readout and interrupt-driven data capture.

Key Specifications

Availability

TLV2548EVM is available at Aetrix Electronics and suitable for industrial data acquisition, motor control feedback validation, and embedded sensor interface development requiring stable component supply and rapid time-to-test.

Supply support for TLV2548EVM 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 connectivity technologies with over 90 years of innovation in precision signal chain solutions.

The TLV2548EVM belongs to TI's precision data acquisition evaluation platform family, engineered to simplify adoption of high-resolution, low-power SAR ADCs in industrial automation, test & measurement, and energy monitoring applications.

FAQ

What is the primary function of the TLV2548EVM?

The TLV2548EVM is an evaluation module that provides a fully assembled, tested hardware platform to evaluate the TLV2548 12-bit SAR ADC. It enables immediate characterization of key parameters - including throughput (200 KSPS), SNDR (70 dB), INL (±1 LSB), and FIFO behavior - without custom PCB design. Engineers use the TLV2548EVM to validate signal integrity, interface timing, and system-level performance before integrating the TLV2548 into final designs.

Does the TLV2548EVM support both SPI and DSP serial interfaces?

Yes, the TLV2548EVM fully supports both interfaces as implemented by the underlying TLV2548 IC. It provides accessible CS, SCLK, SDI, SDO, and FS pins, allowing direct connection to microcontrollers using standard 4-wire SPI (CPOL=0, CPHA=0) or to TI TMS320 DSPs using frame-sync signaling. Jumper configuration and onboard logic ensure correct signal routing for either mode without hardware modification.

How does the TLV2548EVM handle reference voltage selection?

The TLV2548EVM includes jumpers to select between the TLV2548's internal 2 V or 4 V reference, or an external reference applied to REFP/REFM. When internal reference is chosen, REFM is tied to analog ground per datasheet requirements. Onboard 10 µF and 0.1 µF decoupling capacitors are placed directly across REFP–REFM to ensure stable reference operation - critical for achieving the specified ±1 LSB INL and 70 dB SNDR performance.

Can the TLV2548EVM demonstrate extended sampling using the CSTART pin?

Yes, the TLV2548EVM exposes the CSTART pin with dedicated test points and pull-up/pull-down options, enabling full evaluation of the TLV2548's extended sampling capability. This allows users to precisely control sampling duration independent of SCLK - essential for high-impedance sensor sources or applications requiring deterministic acquisition windows. The board's layout preserves signal integrity for CSTART timing, supporting minimum low-time compliance per the TLV2548 datasheet.

What conversion modes are accessible on the TLV2548EVM?

All four TLV2548 conversion modes - one-shot (mode 00), repeat (mode 01), sweep (mode 10), and repeat-sweep (mode 11) - are fully operational on the TLV2548EVM. The module supports configuration via SPI commands to set CFR bits controlling mode selection, FIFO trigger level, sampling period, and reference source. Real-time FIFO readout and EOC/INT interrupt response can be observed and measured directly on the board's test points and headers.