Texas Instruments ADS7853EVM-PDK

Overview

ADS7853EVM-PDK from Texas Instruments is a performance demonstration kit (PDK) for the ADS7853 dual-channel, 14-bit, simultaneous-sampling SAR ADC. It integrates an evaluation board (ADS7853EVM), a Simple Capture Card controller board (AM3352 + FPGA), microSD card, and USB cable to enable rapid hardware/software validation of analog input signal acquisition, FFT analysis, and data capture in lab environments.

For engineers reviewing the ADS7853EVM-PDK datasheet, ADS7853EVM-PDK pinout, ADS7853EVM-PDK application, or ADS7853EVM-PDK equivalent, this kit delivers out-of-box evaluation of 14-bit dual-channel ADC performance with configurable unipolar/bipolar inputs, SPI interface, onboard 2.5-V REF5025 reference, and Windows-based GUI for scope/FFT/histogram analysis.

Technical Context

The ADS7853EVM-PDK implements a complete signal chain: SMA and header analog inputs feed OPA836 op-amps configured as inverting amplifiers (AIN_A/AIN_B) and buffers (for AINM_A/AINM_B), supporting single-ended or pseudo-differential modes. The ADS7853 device itself provides simultaneous sampling with independent configuration registers for full-scale range (0–Vref or 0–2×Vref), reference source selection (internal or external REF5025), and input polarity.

Digital control flows via SPI (CS, SCLK, SDI, SDO_A, SDO_B) and I²C (for onboard EEPROM), routed through 47-Ω series resistors on J6 for signal integrity. Power is supplied via onboard 5-V analog (AVDD) and 3.3-V digital (DVDD) rails, with jumper-selectable voltage levels and external AVDD support through J5.

Key Specifications

Availability

ADS7853EVM-PDK is available at Aetrix Electronics and suitable for precision data acquisition, sensor signal conditioning, and test equipment development requiring stable component supply, consistent firmware revisioning, and validated hardware-software co-design.

Supply support for ADS7853EVM-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 signal chain solutions, with leadership in precision data converters and evaluation platforms.

The ADS7853EVM-PDK belongs to TI's Precision Data Converter Evaluation Kits product line, designed to accelerate validation of high-resolution SAR ADCs in applications demanding low noise, simultaneous sampling, and flexible analog input configuration.

FAQ

What is the primary function of the ADS7853EVM-PDK?

The ADS7853EVM-PDK is a complete evaluation platform for the ADS7853 dual-channel, 14-bit, simultaneous-sampling SAR ADC. It enables engineers to validate analog input performance, configure full-scale range and reference sources, capture real-time data via USB, and perform FFT/histogram analysis using included Windows software - all without custom hardware or firmware development. The ADS7853EVM-PDK integrates both the ADS7853EVM board and Simple Capture Card controller.

Which ADC does the ADS7853EVM-PDK evaluate?

The ADS7853EVM-PDK evaluates the ADS7853 - a dual-channel, 14-bit, simultaneous-sampling successive approximation register (SAR) analog-to-digital converter. It supports single-ended and pseudo-differential analog inputs, programmable full-scale range (0–Vref or 0–2×Vref), and internal or external reference selection. The ADS7853EVM-PDK is not compatible with the ADS8353 (16-bit variant) without firmware and configuration changes.

Does the ADS7853EVM-PDK include software and drivers?

Yes, the ADS7853EVM-PDK includes preloaded firmware on microSD cards (one for Rev A, two for Rev C) containing the Simple Capture Card controller firmware and ADS835x EVM GUI software. The installer (setup.exe) deploys Windows drivers for the AM3352/FPGA controller, GUI application, and required runtime libraries. Driver installation requires Administrator privileges and is validated for Windows XP, 7, and 8.

How are analog input signals connected to the ADS7853EVM-PDK?

Analog signals connect via SMA connectors (J1 for Channel A, J2 for Channel B) or header pins (JP1.2 for AIN_A, JP2.2 for AIN_B). Each channel uses an OPA836 op-amp in inverting configuration for the positive input and buffer configuration for the negative input. Jumpers JP7/JP8 select GND or FSR/2 for AINM_A/AINM_B; JP9/JP10 configure unipolar vs. bipolar biasing. All configurations are documented in the SBAU210A User's Guide.

What power supplies does the ADS7853EVM-PDK require?

The ADS7853EVM-PDK operates from onboard regulated supplies: 5-V analog (AVDD) and 3.3-V digital (DVDD). JP12 selects between onboard AVDD (shunt 2–3) or external 5-V input via terminal block J5. JP11 adjusts onboard AVDD between 5.0 V (open) and 5.2 V (closed). External AVDD must be 5.0–5.5 V; exceeding 5.5 V risks damage. DVDD is supplied directly from the Simple Capture Card via J6.13.