Texas Instruments ADS1602EVM

Overview

ADS1602EVM from Texas Instruments is a dedicated evaluation module for the ADS1602 16-bit delta-sigma analog-to-digital converter, designed to deliver datasheet-grade performance in high-fidelity signal acquisition systems. It features onboard analog signal conditioning, dual reference options (internal/external), configurable modulator clock sourcing (20 MHz or 40 MHz oscillator or external SMA input), and flexible digital interface routing via jumpers and DIP switches.

For engineers reviewing the ADS1602EVM datasheet, ADS1602EVM pinout, ADS1602EVM application, or ADS1602EVM equivalent, this page provides verified hardware configuration details, measured SNR/SFDR performance under four clock/reference combinations, jumper-controlled analog/digital signal routing, power supply requirements (±6 V, +5 V, +3.3 V), and integration guidance with TI DSP Starter Kits via the 5-6K Interface Board.

Technical Context

The ADS1602EVM implements a complete, stand-alone test platform for the ADS1602 ADC, supporting both single-ended (SMA J3) and differential (J1/P1 or Audio Precision J4) analog inputs with user-selectable gain and common-mode voltage. Its analog front-end includes precision resistor networks (0.1% tolerance, 25 ppm/°C), low-noise op-amps (OPA2822), and a buffered REF02 reference IC.

Digital control is managed through seven configurable jumpers (W8–W16) and a 4-position DIP switch (SW2), enabling selection between complementary/standard serial signals (FS/DOUT/CLK), channel routing (0 or 1), external reference enable, and power-down mode - all without requiring firmware changes or soldering.

Key Specifications

Availability

ADS1602EVM is available at Aetrix Electronics and suitable for high-precision data acquisition, audio test instrumentation, and DSP prototyping requiring stable component supply, traceable sourcing, and long-term evaluation board continuity.

Supply support for ADS1602EVM 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 company specializing in analog, embedded processing, and digital signal processing technologies, with leadership in precision data converters and evaluation platforms.

The ADS1602EVM belongs to TI's high-resolution delta-sigma ADC evaluation family, engineered to accelerate validation of the ADS1601/ADS1602 in demanding measurement applications where SNR >90 dB and SFDR >102 dB are required.

FAQ

What is the primary function of the ADS1602EVM?

The ADS1602EVM is a dedicated evaluation module for the ADS1602 16-bit delta-sigma ADC. It provides a fully configured, test-ready platform with analog signal conditioning, reference circuitry, clock options, and digital interface routing - enabling engineers to validate ADC performance, integrate with DSP systems like the TMS320C6713 DSK, and develop firmware using Code Composer Studio without custom hardware design. The ADS1602EVM delivers datasheet-grade SNR and SFDR across multiple clock/reference configurations.

How does the ADS1602EVM connect to a DSP Starter Kit?

The ADS1602EVM connects to TI DSP Starter Kits (DSKs) via the mezzanine-level 5-6K Interface Board, which bridges the EVM's digital control signals (FS, DOUT, CLK) to the DSK's serial port channels. Jumpers W14–W16 on the ADS1602EVM route selected signals to channel 0 or channel 1, while DIP switch SW2 enables external reference and power-down modes. Factory jumper settings on both boards ensure plug-and-play compatibility with supported DSKs including C6713, C6416, and C5510.

What analog input configurations does the ADS1602EVM support?

The ADS1602EVM supports three analog input paths: (1) single-ended via SMA connector J3 (factory default), (2) differential via socket strip/header J1/P1, and (3) differential via Audio Precision System Two™ source at J4 (requires Neutrik NC3FD-V-B connector installation). Jumpers W3 and W5 select AIN− and AIN+ sources, while W1/W4/W6/W7 configure common-mode and reference voltages - allowing precise adaptation to diverse signal sources and grounding schemes.

What are the power supply requirements for the ADS1602EVM?

The ADS1602EVM requires five distinct supplies: ±6 V (or ±5 V) for the analog front-end (P5/J5 pins 1–2), +5 V for the ADC's analog section (pin 3), +5 V for digital I/O (pin 10), and +3.3 V for the digital core (pin 9). A jumper (W12) selects 3 V or 5 V for the I/O interface. An optional 8–40 V supply may be applied to J7 when using the external reference circuit. Power is delivered via the P5/J5 10-pin connector with defined pinout per Table 13.

Can the ADS1602EVM operate without a DSP or host system?

Yes, the ADS1602EVM functions as a stand-alone evaluation system. With appropriate external timing generators, analog stimulus, and logic-level interfacing, users can directly access its serial control signals (FS, DOUT, CLK), monitor out-of-range events via LED D1, and configure reference/clock options using jumpers and SW2. No DSP or host is required for basic ADC characterization - though Code Composer Studio integration with TI DSKs simplifies data capture and visualization for rapid prototyping.