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2.2.5 Outputs
3 EVM Use With the TSW1100
3.1 Connecting to the TSW1100
EVM Use With the TSW1100
The data outputs from the ADC are buffered using two Texas Instruments SN74AVC16244s. Output data
headers J8 and J21 are standard 40-pin headers on a 100-mil grid, and allow easy connection to a logic
analyzer or TSW1100. The connector pinout is listed in Table 2 . Furthermore, five test points are provided.
They are listed in Table 3 .
Table 2. Output Connectors J8 and J21
DESCRIPTION DESCRIPTION
PIN NO. PIN NO.
ADS5231/ADS5232 ADS5237 ADS5231/ADS5232 ADS5237
1 CLK OUT CLK OUT 2 GND GND
3 NC NC 4 GND GND
5 NC NC 6 GND GND
7 NC NC 8 GND GND
9 D11 (MSB) D9 (MSB) 10 GND GND
11 D10 D8 12 GND GND
13 D9 D7 14 GND GND
15 D8 D6 16 GND GND
17 D7 D5 18 GND GND
19 D6 D4 20 GND GND
21 D5 D3 22 GND GND
23 D4 D2 24 GND GND
25 D3 D1 26 GND GND
27 D2 D0 (LSB) 28 GND GND
29 D1 NC 30 GND GND
31 D0 (LSB) NC 32 GND GND
33 NC NC 34 GND GND
35 NC NC 36 GND GND
37 NC NC 38 GND GND
39 NC NC 40 GND GND
Table 3. Test Point Descriptions
Test Point Function
TP1 GND
TP3 GND
TP4 GND
TP6 Bottom reference voltage when forcing external voltage (typical = 1 V)
TP7 Bottom reference voltage when forcing external voltage (typical = 2 V)
The ADS5231/32/37 EVM allows for connection to the TSW1100, allowing easy capture and analysis of
the ADC digital output data. See the TSW1100 Data Capture Board Quick Start Guide (SLAU155 ) and
TSW1100 User’s Guide (SLAU164 ) for more information.
Gently insert the ADS5231/32/37 EVM output connectors J8 and J21 into the TSW1100 input connectors
J2 and J1, respectively.
ADS5231/32/37 EVM8 SBAU111B – May 2006 – Revised November 2007
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