Texas Instruments ADS7863EVM

Overview

ADS7863EVM from Texas Instruments is an evaluation module for the ADS7863 - a 12-bit, dual-channel, 500-kSPS serial-output analog-to-digital converter with 2+2 analog inputs, internal 2.5-V reference, and simultaneous sampling capability. It supports single-ended or differential analog input configurations and operates with AVDD/DVDD from 2.7 V to 5.5 V, enabling flexible integration in precision data acquisition systems.

For engineers reviewing the ADS7863EVM datasheet, ADS7863EVM pinout, ADS7863EVM application, or ADS7863EVM equivalent, this page delivers verified hardware interface details, jumper-configurable ADC mode settings (M0/M1/A0), serial interface signal mapping (CS/SCLK/FS/SDO/INT), analog input channel routing (A0–A1/B0–B1), and power supply configuration options (J3/J4/J6).

Technical Context

The ADS7863EVM provides full access to all functional interfaces of the ADS7863 ADC: analog inputs via J1 (8-pin differential pair header), digital control and serial data via J2 (10-pin header), and mode/configuration signals via J5 (4-pin header). It supports both internal (2.5 V) and external reference sources through jumper W1 and J1.20.

Power delivery is segregated: J3 supplies AVDD (2.7–5.5 V), J4 supplies DVDD (2.7–5.5 V), and J6 enables variable digital supply with current limiting. Default jumper settings configure M0/M1/A0 for A0/B0 conversion with AOUT on J2.13 and BOUT on J5.7, while W2 allows separation of CONVST and RD signals.

Key Specifications

Availability

ADS7863EVM is available at Aetrix Electronics and suitable for precision data acquisition, industrial sensor interfacing, and embedded test equipment requiring stable component supply and rapid ADC evaluation.

Supply support for ADS7863EVM 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 converters, with decades of leadership in precision ADC design and evaluation platforms.

The ADS7863EVM belongs to TI's precision ADC evaluation board family, designed specifically to accelerate development of high-fidelity, multi-channel data acquisition systems using the ADS7861/7863/8361 series.

FAQ

What is the primary function of the ADS7863EVM?

The ADS7863EVM is a dedicated evaluation module for the ADS7863 12-bit dual-channel ADC. It provides complete hardware access to all analog and digital interfaces - including J1 for differential analog inputs (A0–A1/B0–B1), J2 for serial control (CS/SCLK/FS/SDO/INT), and J5 for mode selection (M0/M1/A0) - enabling rapid validation of timing, noise performance, and system-level integration before final PCB design.

Which ADC does the ADS7863EVM support, and what are its key electrical specs?

The ADS7863EVM supports the ADS7863 - a 12-bit, dual, 500-kSPS serial-output ADC with 2+2 analog inputs, simultaneous sampling, and internal 2.5-V reference. Its AVDD/DVDD range is 2.7 V to 5.5 V, input voltage range is –VREF to +VREF (±2.5 V), and it accepts both single-ended and differential analog inputs. The ADS7863EVM itself does not alter these specifications but exposes them fully for measurement and verification.

How do I configure the ADS7863EVM for differential input mode on Channel A?

To configure the ADS7863EVM for differential input on Channel A, connect A0+ and A0− to J1.14 and J1.16 respectively, and A1+ and A1− to J1.10 and J1.12. Ensure jumper W1 is set to internal reference (pins 1–2), and confirm M0/M1/A0 jumpers on J5 are in factory-default low state (shunts on pins 1–2, 3–4, 5–6) to select A0/B0 conversion. No additional op-amp modules are required for basic differential operation.

Can the ADS7863EVM be used with a 3.3-V microcontroller system?

Yes - the ADS7863EVM supports DVDD from 2.7 V to 5.5 V, making it compatible with 3.3-V logic systems. Apply 3.3 V to J4 (DVDD) and 5 V (or 3.3 V) to J3 (AVDD), remove the shunt from W3, and verify level compatibility on J2 signals (CS, SCLK, FS, SDO, INT). The ADS7863's I/Os are CMOS-compatible and tolerate 3.3-V logic thresholds when DVDD = 3.3 V, ensuring reliable communication with standard microcontrollers.

What is the role of jumper W2 on the ADS7863EVM?

Jumper W2 on the ADS7863EVM controls signal routing between CONVST (conversion start) and RD (read). In default position (pins 1–2), it combines both functions onto J2.7, simplifying control for basic operation. When moved to pins 2–3, it separates them: RD remains on J2.7 while CONVST shifts to J2.17, enabling independent timing control - essential for applications requiring precise synchronization between sampling and data readout cycles in the ADS7863.