Datasheet

PIN NAME FUNCTION
1 V
CC
Digital 3.3V (Nominal) Supply
2 AVCC Analog 3.3V (Nominal) Supply
3 DIFFEN
Sample/Hold Single-Mode/Differential Mode Selection. When logic input is:
Low: Single-mode sample/hold output
High: Differential mode sample/hold output.
4 VIP2 20% Current Mirror Output. Connect to resistor to ground.
5 VIP1 80% Current Mirror Output. Connect to resistor to ground.
6 VIN Negative Voltage Input. Connect to the same ground point as resistors connected to VIP1 and VIP2.
7 IOUT 10% Current Mirror Output. If unused, do not connect.
8 SENXOR
Sample Enable XOR. The start and stop of the sampling depend on the logic input of SENXOR and
SEN.
When SENXOR is low, the rising edge of the SEN pulse activates sampling, and the falling edge of
the SEN pulse deactivates sampling.
When SENXOR is high, the falling edge of the SEN pulse activates sampling, and the rising edge of
the SEN pulse deactivates sampling. Note: If SENXOR is high, the discharge function should not be
used.
See Figure 3 for more detail.
9 SEN Sample Enable Pulse. Logic input. See the description of SENXOR and Figure 3 for more detail.
23
24
22
21
8
7
9
AVCC
VIP2 VIP1
VIN
10
VCC
RLIM ILIMS ISRC/SHDN DISCHARGE GAIN
1 2
MIRIN
4 5 6
1718 16 14 13
HVGND
HVD
GND
SEN
SENXOR
IOUT
EP
DS3923
DIFFEN
APDV
3
15
MIRCAP
20 11 VON
HVG
19 12 VOP
MIROUT
24-LEAD TQFN
(3.5mm x 3.5mm x 0.8mm)
+
DS3923 High-Speed Current Mirror
with Sample/Hold Output
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Pin Conguration
Pin Description