Texas Instruments AMC7834, User Manual, Page: 8 / 32

AMC7834EVM Hardware Overview
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8 SLAU608B – December 2014 – Revised May 2016
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AMC7834 Evaluation Module
4 AMC7834EVM Hardware Overview
The subsequent sections provide detailed information on the EVM hardware and jumper configuration
settings. To use the +24-V wall supply, set the AV
DD
and IOV
DD
jumper connections to the default
configuration listed in Table 4 . The table also displays the default configurations of all jumper connections
on the AMC7834EVM. Connect the USB extender cable from the SDM-USB-DIG to the PC, and the +24-
V wall adapter to the J7 terminal.
(1)
Table 4 lists the default connections for the 24-V wall adapter connection. Refer to Table 5 and Table 7 for external power and
reference connections.
Table 4. Default Jumper Settings
(1)
Jumper Default Position Function
JP1 Shunt on 1-2 Q2 Remote Diode Configuration
• 1-2: Connects Q2 in diode configuration with base-collector connected
• Remove: Q2 in diode configuration with collector floating
JP3/JP5 Shunt on 2-3 Remote Diode Selection
• 1-2: Connects D1+ and D1– to terminal block J1
• 2-3: Connects D1+ and D1– to the onboard diode-connected transistor Q2
JP2/JP4 Shunt on 2-3 Remote Diode Selection
• 1-2: Connects D2+ and D2– to terminal block J1
• 2-3: Connects D2+ and D2– to the onboard diode-connected transistor Q1
JP6 Installed Reference Selection
• Installed: REF_ADC/CMP connects to o2.5-V supply
• Not Installed: External reference signal is applied to REF_ADC/CMP
JP7 Shunt on 1-2 PAV
DD
Connection (Power Supply for PA_ON Control Signal.)
• 1-2: PAVDD_EX: Connects to external supply
• 2-3: Connects to V
DD
supply
JP8 Shunt on 1-2 VCLAMP2 Connection
• 1-2: Connects to onboard voltage divider
• 2-3: Connects to GND
JP9 Shunt on 1-2 VCLAMP1 Connection
• 1-2: Connects to onboard voltage divider
• 2-3: Connects to GND
JP10 Shunt on 1-2 REF_IN Selection
• 1-2: Connects to onboard 2.5-V REF supply
• 2-3: Connects to REF_OUT pin
JP11 Shunt on 1-2 Selecting Internal or External AV
DD
/DV
DD
• 1-2: Connects AVDD/DVDD pins to o5-V
• 2-3: Connects AVDD/DVDD pins to external connector (J8)
JP12 Shunt on 1-2 Selecting Internal or External V
CC
• 1-2: Connects VCC pins to o5-V
• 2-3: Connects VCC pins to external connector (J9)
JP13 Shunt on 1-2 Selecting Internal or External AVSS
• 1-2: Connects AVSS pins to onboard –5-V
• 2-3: Connects AVSS pins to external connector (J10)
JP14 Shunt on 1-2 Selecting Internal or External IOV
DD
• 1-2: Connects IOVDD pins to SDM-USB-DIG su3.3 V
• 2-3: Connects IOVDD pins to external connector (J11)
4.1 Electrostatic Discharge Warning
Many of the components on the AMC7834EVM are susceptible to damage by electrostatic discharge
(ESD). Customers are advised to observe proper ESD handling precautions when unpacking and handling
the EVM, including the use of a grounded wrist strap at an approved ESD workstation.