DS1802
Dual Audio Taper Potentiometer
With Pushbutton Control
www.dalsemi.com
FEATURES
搂
Ultra-low power consumption
搂
Operates from 3V or 5V supplies
搂
Two digitally controlled, 65-position
potentiometers including mute
搂
Logarithmic resistive characteristics (1 dB
per step)
搂
Zero-crossing detection eliminates noise
caused by wiper movement
搂
Digital or mechanical pushbutton wiper
control
搂
Serial port provides means for setting and
reading both potentiometers wipers
搂
20-pin SOIC and 20-pin TSSOP for surface
mount applications
搂
Operating Temperature Range:
-40掳 to +85掳
C
C
搂
Software and hardware mute
搂
Resistance Available: 45 k鈩?/div>
PIN ASSIGNMENT
GND
COUT
CLK
D
RST
ZCEN
MODE
W0
L0
H0
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VCC
VU (UC1)
VD (DC1)
B0 (UC0)
B1 (DC0)
MUTE
AGND
H1
L1
W1
20-Pin DIP (300-mil)
20-Pin SOIC (300-mil)
20-Pin TSSOP (173-mil)
See Mech. Drawings Section
PIN DESCRIPTION
L0, L1
H0, H1
W1,W2
V
CC
RST
D
CLK
MODE
UC0, UC1
DC0, DC1
VU, VD
B0, B1
GND
MUTE
AGND
ZCEN
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
C
OUT
1 of 17
Low End of Resistor
High End of Resistor
Wiper End of Resistor
3V/5V Power Supply Input
Serial Port Reset Input
Serial Port Data Input
Serial Port Clock Input
Mode Select Input
Up Control Pushbutton Inputs
Down Control Pushbutton
Inputs
Volume-Up/Volume-Down
Inputs
Balance Pot-0, Pot-1 Inputs
Digital Ground
Mute
Analog Ground
Zero-Crossing Detect Input
Cascade Output
101999
next