DS1801 Datasheet, PDF (1/10 Pages) Dallas Semiconductor – Dual Audio Taper Potentiometer

DS1801
Dual Audio Taper Potentiometer
www.dalsemi.com
FEATURES
Ultra-low power consumption
Operates from 3V or 5V supplies
Two digitally controlled, 65-position
potentiometers including mute
Logarithmic resistive characteristics (1 dB
per step)
Zero-crossing detection eliminates noise
caused by wiper movement
Serial port provides means for setting and
reading both potentiometers wipers
14-pin PDIP, 16-pin SOIC, and 14-pin
TSSOP packages
Operating Temperature Range:
- Industrial: -40°C to +85°C
Software mute
Resistance available: 45 kΩ
PIN DESCRIPTION
L0, L1
- Low End of Resistor
H0, H1
- High End of Resistor
W0,W1
- Wiper End of Resistor
V_CC
- 3V or 5V Power Supply Input
RST
D
CLK
GND
AGND
- Serial Port Reset Input
- Serial Port Data Input
- Serial Port Clock Input
- Digital Ground
- Analog Ground
ZCEN
C_OUT
NC
- Zero-Crossing Detect Input
- Cascade Output
- No Connect
PIN ASSIGNMENT
GND 1
COUT 2
RST 3
ZCEN 4
W0 5
L0 6
H0 7
14 VCC
13 CLK
12 D
11 AGND
10 H1
9 L1
8 W1
DS1801 14-Pin PDIP (300-mil)
DS1801 14-Pin TSSOP (173-mil)
GND 1
COUT 2
RST 3
ZCEN 4
NC 5
W0 6
L0 7
H0 8
16 VCC
15 CLK
14 D
13 NC
12 AGND
11 H1
10 L1
9 W1
DS1801S 16-PIN SOIC (300-mil)
See Mech. Drawings Section
DESCRIPTION
The DS1801 is a dual audio taper potentiometer having logarithmic resistive characteristics over the
device range. Each potentiometer provides 65 wiper positions with a 1 dB increment per step and device
mute. The 3-wire serial interface, using a CPU, provides the user the ability of reading or writing exact
wiper positions of the two potentiometers. Additionally, the part contains a zero-crossing detection
feature that minimizes noise resulting from wiper transitions. Packages for the part include a 14-pin
PDIP, 16-pin SOIC, and 14-pin TSSOP.
1 of 10
030300