DS1800 Datasheet, PDF (1/14 Pages) Dallas Semiconductor – Dual Inverting Log Gain/Attenuator

DS1800
Dual Inverting Log Gain/Attenuator
www.dalsemi.com
FEATURES
Ultra-low power consumption
Operates from 3V or 5V supplies
Two digitally controlled, 128-position
potentiometers including mute
Logarithmic gain characteristics
Zero-crossing detection eliminates noise
caused by discrete wiper changes
Two control interfaces
- 3-wire serial CPU control
- Pushbutton control
20-pin DIP (300-mil), 20-pin SOIV (300-
mil), and 20-pin (173-mil) TSSOP packaging
available
Operating Temperature Range:
- Industrial: -40°C to +85°C
Software and hardware mute
Standard Resistance Available: 53KΩ
PIN ASSIGNMENT
GND 1
C_OUT
2
CLK 3
D4
RST 5
ZCEN 6
MODE 7
W0 8
OUT0 9
IN0 10
20 V_CC
19 P1G
18 P1A
17 P0G
16 P0A
15 MUTE
14 AGND
13 IN1
12 OUT1
11 W1
20-Pin DIP (300-mil)
20-Pin SOIC (300-mil)
20-Pin TSSOP
See Mech. Drawings Section
PIN DESCIPTION
OUT0,OUT1 - Low-end of resistor
IN0, IN1 - High-end of resistor
W0,W1
- Wiper Terminal
V_CC
- 3V or 5V Power Supply Input
RST
CLK
D
C_OUT
P0G,P1G
P0A,P1A
- Serial Port Reset Input
- Serial Port Clock Input
- Serial Port Data Input
- Cascade Data Output
- Gain Input Pot Controls
- Attenuation Input Pot Controls
ZCEN
MUTE
AGND
GND
- Zero-Crossing Detect Input
- Hardware Mute Control Input
- Analog Ground
- Ground
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