Evaluation Board Hardware; Evaluation Board Connectors And Jumpers - Analog Devices EVAL-ADM8832 Manual

EVALUATION BOARD HARDWARE

The ADM8832 evaluation board contains the following main
components, which can be identified from the block diagram
and the schematic shown in Figure 1 and Figure 2, respectively:
•
20-lead LFCSP socket to hold the ADM8832 IC
•
9 jumper points to facilitate the connection of external
LDOs, clock sources, and external loads
•
1 SMB connector for reliable logic signal connection
•
9 test points for signal connection and measurement
•
A large patchwork area to facilitate the addition of extra
components to the ADM8832 evaluation board
Table 2. SMB Connection
Jumper Pin
SK1 CLKIN
Table 3. Jumpers (Links)
Jumper Description
LK1 Connects to optional external 5 V loads (R1, R2, and R3).
LK1A Connects +5VOUT (Pin 4) to 620 Ω resistor (R1) to GND. (This generates a maximum scanning mode load current
of 8 mA.)
LK1B Connects +5VOUT (Pin 4) to 1 kΩ resistor (R2) to GND. (This generates a load current of 5 mA.)
LK1C Connects +5VOUT (Pin 4) to 24.9 kΩ resistor (R3) to GND. (This generates a maximum blanking mode load current
of 200 μA.)
LK2A Connects VOUT (Pin2) to LDO_IN (Pin 3).
LK2B Connects external source (J2) to LDO_IN (Pin 3).
LK3A Connects CLKIN (Pin 9) to VCC.
LK3B Connects CLKIN (Pin 9) to GND.
LK3C Connects CLKIN (Pin 9) to SK1.
LK4A Connects −10VOUT (Pin 17) to 100 kΩ resistor (R6) to GND. (This generates a max load current of 100 μA.)
LK4B Connects −10VOUT (Pin 17) to 1 MΩ resistor (R7) to GND. (This generates a min load current of 10 μA.)
LK4C Connects −10VOUT (Pin 17) to patchwork area.
LK5A Connects +15VOUT (Pin 10) to 150 kΩ resistor (R4) to GND. (This generates a maximum load current of 100 μA.)
LK5B Connects +15VOUT (Pin 10) to 1.5 MΩ resistor (R5) to GND. (This generates a minimum load current of 10 μA.)
LK5C Connects +15VOUT (Pin 10) to patchwork area.
LK6A Connects ADM8832 regulated +5VOUT (Pin 4) to +5VIN (Pin 5). (Input to the +15 V and −10 V charge pump stage.)
LK6B Connects externally regulated 5 V output to +5VIN (Pin 5). (Input to the +15 V and −10 V charge pump stage.)
Connects V to LDO_ON/OFF (Pin 6).
LK7A
CC
Connects LDO_ON/OFF (Pin 6) to GND.
LK7B
Connects V to SHDN (Pin 7).
LK8A
CC
Connects SHDN (Pin 7) to GND.
LK8B
Connects V to SCAN/BLANK (Pin 8).
LK9A
CC
Connects SCAN/BLANK (Pin 8) to GND.
LK9B
Function
External clock used during blanking mode
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EVALUATION BOARD CONNECTORS AND JUMPERS

The function of the various connectors and jumpers on the
evaluation board is explained in Table 1, Table 2, and Table 3.
Table 1. Evaluation Board Power Connectors
Connector Function
J1 Supply to ADM8832 (3 V nominal)
J2 External Source (can be regulated by on-board LDO)
Logic Level (High = 3 V, Low = 0 V)
External
EVAL-ADM8832
Default
Status
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