Analog Devices AD8556-EVALZ, Руководство пользователя

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UG-896 AD8556-EVALZ/AD8556CP-EBZ User Guide
Rev. A | Page 4 of 9
QUICK INITIAL HARDWARE SETUP AND OUTPUT
VERIFICATION
For an initial hardware setup and output verification, follow
these steps:
1. Connect the evaluation board to the SDP board, which
connects to the USB port of your PC system using a USB
mini-B cable.
2. Position manual switches to V
POS
P2 and V
NEG
P2.
3. Jumper the VCLAMP connector pin to the VDD
connector pin.
4. Apply 10 mV dc signal between the +V
IN
dc and −V
IN
dc
connectors, and monitor the V
OUT
dc output using a
voltmeter.
5. Place an AD8555 / AD8556 / AD8557 device in the
SOIC/LFCSP socket, connect the VCLAMP pin to the
VDD pin, and apply dc power to the board using an
external power supply (±2.5 V).
When this procedure is complete, the output is 70 mV, with the
board in this configuration consuming approximately 4 mA.
STEP 5
APPLY
+2.5V
APPLY
GND
APPLY
–2.5V
STEP 4
CONNECT V
IN
STEP 4
MONITOR V
OUT
STEP 3
CONNECT VCLAMP TO VDD
AD8555/
AD8556/
AD8557
SOIC/LFCSP
VDD GND VSS
VCLAMP
V
NEG
V
POS
–V
IN
DC +V
IN
DC
VOUT
FILT OUT
STEP 1
CONNECT SDP
STEP 2
THESE SWITCHES SET INPUT
POLARITY AS NEEDED
AD8556 EVALUATION BOARD
1
1886
-011
Figure 2. Evaluation Board Block Diagram