Datasheet

www.ti.com Schematics and Layout
9.2 Troubleshooting
If the ADS1248EVM plug-in cannot find the ADS1248EVM-PDK, press the USB RESET button on the
MMB3 (refer to Figure 6) and try again.
If ADCPro stops responding while the ADS1248EVM-PDK is connected, try unplugging the USB cable
from the PDK. Unload and reload the plug-in before reapplying power to the PDK.
10 Schematics and Layout
Schematics for the ADS1148EVM and ADS1248EVM are appended to this user's guide. The bill of
materials is provided in Table 7.
10.1 Bill of Materials
NOTE: All components should be compliant with the European Union Restriction on Use of
Hazardous Substances (RoHS) Directive. Some part numbers may be either leaded or
RoHS. Verify that purchased components are RoHS-compliant. (For more information about
TI's position on RoHS compliance, see the Quality and Eco-Info information on the TI web
site.)
Table 7. ADS1148EVM/ADS1248EVM Bill of Materials
Item No. Qty Value Ref Des Description Vendor Part Number
1 1 N/A ADS1248 EVM PWB Texas 6496961
Instruments
2 4 1μF C1-C3, C33 Capacitor, X7R Ceramic 1μF ±10%, 16WV, TDK C1608X7R1C105KT
Size = 0603
3 2 22μF C4, C5 Capacitor, X5R Ceramic 22μF ±20%, TDK C3225X5R1C226MT
16WV, Size = 1210
4 12 0.1μF C6-C13, C15, C34, Capacitor, X7R Ceramic 0.1μF ±10%, TDK C1608X7R1E104KT
C35, C36 25WV, Size = 0603
5 1 0.15μF C14 Capacitor, X7R Ceramic 0.15μF ±10%, Murata GRM188R71C154KA
16WV, Size = 0603 01D
6 8 10μF C16-C23 Capacitor, X5R Ceramic 10μF ±20%, TDK C2012X5R0J106MT
6.3WV, Size = 0805
7 8 47pF C24-C31 Capacitor, C0G Ceramic 47pF ±5%, 50WV, TDK C1608C0G1H470JT
Size = 0603
8 1 10nF C32 Capacitor, C0G Ceramic 10nF ±5%, 25WV, TDK C1608C0G1E103JT
Size = 0603
9 4 D1, D2, D5, D6 DIODE SCHOTTKY 30V 200MA SOT-23 Fairchild BAT54
10 2 D3, D4 5.1V, Zener Diode On MMBZ5231BLT1G
Semiconductor
11 2 J1, J2 Header Strip, 3-pin ( ) Samtec TSW-103-07-L-S
12 1 J4 Terminal Block, 9-position On Shore ED555/9DS
Technology
13 4 J5, J6, J13, J14 Header Strip, 2-pin ( ) Samtec TSW-102-07-L-S
14 2 J7A, J8A 20-pin SMT Plug Samtec TSM-110-01-L-DV-P
15 2 J7B, J8B 20-pin SMT Socket Samtec SSW-110-22-F-D-VS-
K
16 1 J9 Terminal Block, 3 position On Shore ED555/3DS
Technology
17 1 J10 Header Strip, 10-pin ( ) Samtec TSW-105-07-L-D
18 1 J11A 10-pin SMT Plug Samtec TSM-105-01-L-DV-P
19 1 J11B 10-pin SMT Socket Samtec SSW-105-22-F-D-VS-
K
20 0 J12 Header Strip, 6-pin ( )
21 2 Q1, Q2 MOSFET, P-Channel, 2.5V Fairchild FDN302P
22 1 Q3 Enhancement Mode FET, N-Channel Fairchild FDN337N
23 1 100kΩ RA1 Resistor, 8 Thick Film Chip Array 100kΩ, CTS 745C101104JPTR
5%, 63mW
29
SBAU142B– April 2009–Revised May 2011 ADS1148EVM, ADS1248EVM, ADS1148EVM-PDK, and ADS1248EVM-PDK
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