Texas Instruments ADS1672EVM-PDK

Overview

ADS1672EVM-PDK from Texas Instruments is a complete evaluation kit for the ADS1672 - a high-speed, single-channel, 24-bit, 625kHz delta-sigma analog-to-digital converter. It integrates the ADS1672EVM board, MMB0 DSP-based motherboard, USB interface, and ADCPro™ software to enable full characterization of dynamic performance (SNR, THD, SFDR), digital filter configuration, and real-time data capture via Windows-based GUI.

For engineers reviewing the ADS1672EVM-PDK datasheet, ADS1672EVM-PDK pinout, ADS1672EVM-PDK application, or ADS1672EVM-PDK equivalent, this kit delivers turnkey evaluation of high-precision, high-speed ADC behavior - including anti-aliasing filter response, reference settling under 50ns, CMOS serial interface timing, and low-latency vs. wide-bandwidth digital filter path selection - without custom firmware or hardware design.

Technical Context

The ADS1672EVM-PDK implements a complete signal chain: differential analog input conditioned by THS4520 (570V/μs slew rate, 2nV/√Hz noise), buffered 3.0V reference from REF5030 + OPA211 (settling to ±1/2 LSB every 50ns), and 20MHz onboard oscillator or external clock support. All digital control is managed via I²C (PCA9535) or direct CMOS interface (3.3V logic levels).

It supports two digital filter modes - wide-bandwidth (FPATH = 0) and low-latency (FPATH = 1 with LL_CONFIG selectable) - and enables oversampling ratio configuration (DRATE1/DRATE2) and power-down (PDWN) via SW1 DIP switches or software-controlled GPIO. The system operates with +5V and +3.3V supplies, referenced to AGND.

Key Specifications

Availability

ADS1672EVM-PDK is available at Aetrix Electronics and suitable for high-precision test equipment development, industrial data acquisition systems, and medical instrumentation prototyping requiring stable component supply and validated reference designs.

Supply support for ADS1672EVM-PDK 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 high-performance data conversion technologies.

The ADS1672EVM-PDK belongs to TI's precision ADC evaluation platform product line, designed to accelerate validation of high-resolution, high-speed delta-sigma converters in metrology, power quality monitoring, and scientific instrumentation applications.

FAQ

What is the ADS1672EVM-PDK used for?

The ADS1672EVM-PDK is a complete evaluation kit for the ADS1672 24-bit, 625kHz delta-sigma ADC. It enables engineers to characterize dynamic performance (SNR, THD, SFDR), configure digital filters (wide-bandwidth or low-latency), validate reference settling (<50ns), and capture real-time data using ADCPro™ software on Windows. ADS1672EVM-PDK eliminates the need for custom interface hardware or firmware during early-stage ADC evaluation.

Does the ADS1672EVM-PDK support LVDS interface?

No, the ADS1672EVM-PDK does not support LVDS interface. It implements only the standard 3.3V CMOS serial interface for the ADS1672, as confirmed in Section 6 of the User's Guide. The SW1 DIP switch includes an LVDS disable pin (SW1.6), which must remain in the OFF position - reinforcing that LVDS functionality is not implemented on the ADS1672EVM-PDK board or its signal routing.

How is the reference voltage managed on the ADS1672EVM-PDK?

The ADS1672EVM-PDK uses a two-stage reference system: the REF5030 generates a precise 3.0V reference, which is filtered and buffered by the OPA211 to drive the ADS1672's switched-capacitor reference inputs. This design ensures reference settling to within ±1/2 LSB every 50ns - meeting the ADS1672's strict timing requirement. Decoupling uses 22μF and 0.1μF ceramic capacitors placed directly at the VREFP/VREFN pins.

Can the ADS1672EVM-PDK operate without the MMB0 motherboard?

Yes - the ADS1672EVM board (included in the ADS1672EVM-PDK) can operate as a stand-alone evaluation module when supplied with +5VA and +3.3VD, and driven by external digital control signals (CS, START, CLKR) applied via P2 connector. However, the full ADS1672EVM-PDK kit requires the MMB0 for USB connectivity, I²C control, and ADCPro™ software integration - the "PDK" designation specifically denotes the packaged kit with MMB0 and software.

What software is required to use the ADS1672EVM-PDK?

The ADS1672EVM-PDK requires ADCPro™ software (version compatible with SBAU128 User's Guide) and the dedicated ADS1672EVM-PDK plug-in (e.g., ads1672evm-pdk-plug-in-1.0.0.exe). ADCPro provides scope, FFT, and histogram analysis; real-time data logging to text files; and full control over FPATH, LL_CONFIG, DRATE, and power-down settings. Windows USB drivers install automatically during first launch of ADCPro with the ADS1672EVM-PDK connected.