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DS1669 データシート PDF ( 特性, スペック, ピン接続図 )

部品番号 DS1669
部品説明 Dallastat Electronic Digital Rheostat
メーカ Dallas Semiconductor
ロゴ Dallas Semiconductor ロゴ 

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DS1669 Datasheet, DS1669 PDF,ピン配置, 機能
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DS1669
DallastatTM Electronic Digital Rheostat
FEATURES
Replaces mechanical variable resistors
Electronic interface provided for digital as
well as manual control
Wide differential input voltage range
between 4.5 and 8 volts
Wiper position is maintained in the absence
of power
Low-cost alternative to mechanical controls
Applications include volume, tone, contrast,
brightness, and dimmer control
Available in 8-pin SOIC and 8-pin DIP
packages
Standard resistance values for Dallastat:
DS1669-10 ~ 10 k
DS1669-50 ~ 50 k
DS1669-100 ~ 100 k
Operating Temperature Range
Industrial: -40°C to +85°C
PIN ASSIGNMENT DS1669
(RH) 1 8 +V
UC 2 7 DC
D 3 6 RW
(RL) 4 5 V-
8-Pin SOIC (208-mil)
See Mech. Drawings Section
(RH)
UC
D
(RL)
1
2
3
4
8 +V
7 DC
6 RW
5 -V
8-Pin DIP (300-mil)
See Mech. Drawings Section
PIN DESCRIPTION DS1669
RH - High Terminal of Potentiometer
RW - Wiper Terminal of Potentiometer
RL - Low Terminal of Potentiometer
-V, +V
- Voltage Inputs
UC - Up Contact Input
D - Digital Input
DC - Down Contact Input
DESCRIPTION
The DS1669 DallastatTM is a digital rheostat or potentiometer. This device provides 64 possible uniform
tap points over the entire resistive range. The standard resistive ranges are 10 k, 50 k, and 100 k.
The Dallastat can be controlled by either a switch contact closure input or a digital source input such as a
CPU. Wiper position is maintained in the absence of power through the use of a EEPROM memory cell
array. The EEPROM cell array will withstand more than 50,000 writes.
The DS1669 is offered in two standard IC packages which include an 8-pin 300-mil DIP and an 8-pin
208-mil SOIC. The DS1669 can be configured to operate using a single pushbutton, dual pushbutton or
digital source input by varying power-on conditions. This is illustrated in Figures 1 and 2. The DS1669
pinouts allow access to both ends of the potentiometer RL, RH, and the wiper, RW. Control inputs include
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