Analog Devices EVAL-ADM8832, Руководство пользователя

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EVAL-ADM8832
Rev. 0 | Page 3 of 8
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
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)
Table 2. SMB Connection
Jumper Pin Function Logic Level (High = 3 V, Low = 0 V)
SK1 CLKIN External clock used during blanking mode External
Table 3. Jumpers (Links)
Jumper Description
Default
Status
LK1 Connects to optional external 5 V loads (R1, R2, and R3).
LK1A Co5VOUT (Pin 4) to 620 Ω resistor (R1) to GND. (This generates a maximum scanning mode load current
of 8 mA.) Removed
LK1B Co5VOUT (Pin 4) to 1 kΩ resistor (R2) to GND. (This generates a load current of 5 mA.) Removed
LK1C Co5VOUT (Pin 4) to 24.9 kΩ resistor (R3) to GND. (This generates a maximum blanking mode load current
of 200 μA.) Removed
LK2A Connects VOUT (Pin2) to LDO_IN (Pin 3). Inserted
LK2B Connects external source (J2) to LDO_IN (Pin 3). Removed
LK3A Connects CLKIN (Pin 9) to VCC. Removed
LK3B Connects CLKIN (Pin 9) to GND. Removed
LK3C Connects CLKIN (Pin 9) to SK1. Inserted
LK4A Connects −10VOUT (Pin 17) to 100 kΩ resistor (R6) to GND. (This generates a max load current of 100 μA.) Inserted
LK4B Connects −10VOUT (Pin 17) to 1 MΩ resistor (R7) to GND. (This generates a min load current of 10 μA.) Inserted
LK4C Connects −10VOUT (Pin 17) to patchwork area. Inserted
LK5A Co15VOUT (Pin 10) to 150 kΩ resistor (R4) to GND. (This generates a maximum load current of 100 μA.) Inserted
LK5B Co15VOUT (Pin 10) to 1.5 MΩ resistor (R5) to GND. (This generates a minimum load current of 10 μA.) Inserted
LK5C Co15VOUT (Pin 10) to patchwork area. Inserted
LK6A Connects ADM8832 reg5VOUT (Pin 4) to +5VIN (Pin 5). (Input to the +15 V and −10 V charge pump stage.) Inserted
LK6B Connects externally regulated 5 V output to +5VIN (Pin 5). (Input to the +15 V and −10 V charge pump stage.) Removed
LK7A
Connects V
CC
to LDO_ON/OFF (Pin 6).
Inserted
LK7B
Connects LDO_ON/OFF (Pin 6) to GND.
Removed
LK8A
Connects V
CC
to SHDN (Pin 7).
Inserted
LK8B
Connects SHDN (Pin 7) to GND.
Removed
LK9A
Connects V
CC
to SCAN/BLANK (Pin 8).
Inserted
LK9B
Connects SCAN/BLANK (Pin 8) to GND.
Removed