X9314
Pin Descriptions
V
H
/R
H
and V
L
/R
L
The high (V
H
/R
H
) and low (V
L
/R
L
) terminals of the X9314
are equivalent to the fixed terminals of a mechanical
potentiometer. The minimum voltage is –5V and the
maximum is +5V. It should be noted that the terminology of
V
L
/R
L
and V
H
/R
H
references the relative position of the
terminal in relation to wiper movement direction selected by
the U/D input and not the voltage potential on the terminal.
INC
U/D
V
H
/R
H
V
SS
Pin Configuration
8-Lead DIP/SOIC
1
2
3
4
X9314
8
7
6
5
V
CC
CS
V
L
/R
L
V
W
/R
W
V
W
/R
W
V
W
/R
W
is the wiper terminal, equivalent to the movable
terminal of a mechanical potentiometer. The position of the
wiper within the array is determined by the control inputs.
The wiper terminal series resistance is typically 40Ω.
8-Lead MSOP
V
H
/R
H
V
SS
V
W
/R
W
V
L
/R
L
1
2
3
4
X9314
8
7
6
5
U/D
INC
V
CC
CS
Up/Down (U/D)
The U/D input controls the direction of the wiper movement
and whether the counter is incremented or decremented.
Increment (INC)
The INC input is negative-edge triggered. Toggling INC will
move the wiper and either increment or decrement the
counter in the direction indicated by the logic level on the
U/D input.
Pin Names
SYMBOL
V
H
/R
H
V
W
/R
W
V
L
/R
L
V
SS
V
CC
U/D
INC
CS
DESCRIPTION
High Terminal
Wiper Terminal
Low Terminal
Ground
Supply Voltage
Up/Down Input
Increment Input
Chip Select Input
Chip Select (CS)
The device is selected when the CS input is LOW. The
current counter value is stored in nonvolatile memory when
CS is returned HIGH while the INC input is also HIGH. After
the store operation is complete the X9314 will be placed in
the low power standby mode until the device is selected
once again.
Typical Attenuation Characteristics (dB)
0
Attenuation (dB)
-20
-40
-43.5
-60
31
28
24
20
16
Tap Position
12
8
4
0
3
FN8178.1
September 15, 2005
INTERSIL [ INTERSIL CORPORATION ]
