Evm Analog Interface; Ads8688Evm Analog Input Connections For Channels Ain0, Ain1, Ain2, And Ain3; Ads8688Evm Analog Input Connections For Channels Ain4, Ain5, Ain6, And Ain7 - Texas Instruments ADS8688EVM-PDK User Manual

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EVM Analog Interface

The ADS8688EVM is designed for easy interfacing to analog sources. The Samtec™ connector provides
a convenient 10-pin, dual-row, header at J7.
connections for channels AIN0 to AIN3 and channels AIN4 to AIN7, respectively.
interface connections for J7.
nd
2 Order Butterworth
Low Pass Filter
3.57k
J7
Ax+
Ax-
J25,J31,
J30,J15
Bypass Path
Figure 1. ADS8688EVM Analog Input Connections for Channels AIN0, AIN1, AIN2, and AIN3
Figure 2. ADS8688EVM Analog Input Connections for Channels AIN4, AIN5, AIN6, and AIN7
SBAU230A – August 2014 – Revised December 2014
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Figure 1
2.2nF
6.65k OPA2209
+
10 0Ÿ
1nF
J7
Ax+
Ax-
Optional
357
357 10 nF
Copyright © 2014, Texas Instruments Incorporated
and Figure 2 show the ADS8688EVM analog input
Optional
J8,J9,
357
J10,J11
357 10 nF
ADS8688
AIN_xP
AIN_xGND
ADS8688EVM-PDK Evaluation Module
EVM Analog Interface
Table 2 lists the analog
ADS8688
AIN_xP
AIN_xGND
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