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Teilenummer | DS1669S |
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Beschreibung | ELECTRONIC DIGITAL RHEOSTAT | |
Hersteller | Dallas Semiconducotr | |
Logo | ||
Gesamt 10 Seiten DS1668, DS1669, DS1669S
DS1668, DS1669, DS1669S
DallastatTM Electronic Digital Rheostat
FEATURES
• Replaces mechanical variable resistors
• Available as the DS1668 with manual interface or the
DS1669 integrated circuit
• Human engineered interface provides easy control
with DS1668
• 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, bright-
ness, and dimmer control
• 8–pin SOIC and 8–pin DIP packages for DS1669
• Standard resistance values for Dallastat
– DS1668/DS1669–10 ~ 10KΩ
– DS1668/DS1669–50 ~ 50KΩ
– DS1668/DS1669–100 ~ 100KΩ
• Operating Temperature Range
– Commercial: 0°C to 70°C; DS1668, DS1669
– Industrial: –40°C to +85°C; DS1669
PIN ASSIGNMENT DS1668
RH NC D
PIN 1
INDICATOR
654
123
TOP VIEW
+V RW -V
INTEGRATED
PUSHBUTTON
PIN ASSIGNMENT DS1669
(RH)
UC
D
(RL)
1
2
3
4
8
7
6
5
8-Pin DIP (300 Mil)
+V
DC
RW
–V
(RH)
UC
D
(RL)
1
2
3
4
8 +V
7 DC
6 RW
5 V-
8-Pin SOIC (208 Mil)
PIN DESCRIPTION DS1669
RH
RW
RL
-V, +V
- Resistor High End
- Resistor Wiper
- Resistor Low End
- Voltage Inputs
UC - Up Contact Input
D - Digital Input
DC - Down Contact Input
PIN DESCRIPTION DS1668
+V - Positive Voltage Input
-V - Negative Voltage
RW - Resistor Wiper
D - Digital Input
RH - Resistor High End
NC - No Connection - Pin Missing
ECopyright 1995 by Dallas Semiconductor Corporation.
All Rights Reserved. For important information regarding
patents and other intellectual property rights, please refer to
Dallas Semiconductor data books.
081895 1/10
DS1668, DS1669, DS1669S
FLOWCHART: TWO BUTTON OPERATION Figure 5
CONTACT CLOSURE
UC
UC OR DC?
DC
AT UPPER
LIMIT?
NO
INCREMENT
1/64TH
YES
YES
BOTH CONTACTS
OPEN?
YES
AT LOWER
LIMIT?
NO
DECREMENT
1/64TH
CONTACT CLOSED
CONTINUOUSLY
>1 SEC?
NO
YES
INCREMENT ON
100MS INTERVALS
NO CONTACT CLOSED
CONTINUOUSLY
>1 SEC?
YES
DECREMENT ON
100MS INTERVALS
NO YES
AT UPPER
LIMIT?
YES
AT LOWER
LIMIT?
NO
CONTACT OPEN AND CONTACT CLOSURE TIMING IS 1 sec. ± 10%
081895 6/10
6 Page | ||
Seiten | Gesamt 10 Seiten | |
PDF Download | [ DS1669S Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
DS1669 | Dallastat Electronic Digital Rheostat | Dallas Semiconductor |
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