www.ti.com
1
EVM Overview
1.1
Features
1.2
Introduction
2
Analog Interface
EVM Overview
•
Full-featured evaluation board for the ADS1241 24-bit analog-to-digital converter
•
On-board reference and oscillator circuits
•
Modular
design
for
use
with
a
variety
of
DSP
and
microcontroller
interface
boards
The ADS1241MEVM is in Texas Instruments' modular EVM form factor, which allows direct
evaluation of the ADS1241 performance and operating characteristics, and eases software
development and system prototyping. This EVM is compatible with the 5-6K Interface Board
(SLAU104) from Texas Instruments and additional third-party boards such as the HPA449
demonstration board from SoftBaugh, Inc. (
) and the Speedy33™ from
Hyperception, Inc. (
).
For maximum flexibility, the ADS1241MEVM is designed for easy interfacing to multiple analog
sources. Samtec part numbers SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P provide a
convenient 10-pin, dual-row, header/socket combination at J1. This header/socket provides
access to the analog input pins of the ADS1241. Consult Samtec at
or call
1-800-SAMTEC-9 for a variety of mating connector options.
Table 1. Analog Interface Pinout
Pin Number
Signal
Description
J1.1
AN0-
ADS1241 AN1
J1.2
AN0+
ADS1241 AN0
J1.3
AN1-
ADS1241 AIN3
J1.4
AN1+
ADS1241 AIN2
J1.5
AN2-
ADS1241 AIN5
J1.6
AN2+
ADS1241 AIN4
J1.7
AN3-
ADS1241 AIN7
J1.8
AIN3+
ADS1241 AIN6
J1.10
AIN4+
ADS1241 AINCOM
J1.15
VCOM
Tied to onboard 2.5V reference
J1.18
REF(-)
External reference source low side
J1.20
REF(+)
External reference source input (2.5V NOM)
J1.9-J1.19 (odd)
GND
Analog ground connections (except J1.15)
J1.12-J1.16 (even)
Unused
ADS1241MEVM
2
SBAU106 – October 2004
