ISL22444 Datasheet, PDF (3/19 Pages) Intersil Corporation – Quad Digitally Controlled Potentiometer XDCP

ISL22444
Pin Descriptions
TSSOP PIN
1
2
3
4
5
QFN PIN
19
20
1
2
3
SYMBOL
RH3
RL3
RW3
NC
SCK
“High” terminal of DCP3
“Low” terminal of DCP3
“Wiper” terminal of DCP3
No connection
SPI interface clock input
DESCRIPTION
6
4
SDO
Data Output of the SPI serial interface
7
5
GND
Device ground pin
8
6
RW2
“Wiper” terminal of DCP2
9
7
RL2
“Low” terminal of DCP2
10
8
RH2
“High” terminal of DCP2
11
9
RW1
“Wiper” terminal of DCP1
12
10
RL1
“Low” terminal of DCP1
13
11
RH1
“High” terminal of DCP1
14
12
CS
Chip Select active low input
15
13
SDI
Data Input of the SPI serial interface
16
14
VCC
Positive power supply pin
17
15
V-
Negative power supply pin
18
16
RH0
“High” terminal of DCP0
19
17
RL0
“Low” terminal of DCP0
20
18
RW0
“Wiper” terminal of DCP0
EPAD*
Exposed Die Pad internally connected to V-
* Note: PCB thermal land for QFN EPAD should be connected to V- plane or left floating. For more information refer to
http://www.intersil.com/data/tb/TB389.pdf
3
FN6426.0
May 24, 2007