DS1869-100 Maxim Integrated Products, DS1869-100 Datasheet

IC RHEOSTAT DALLAST 3V 100K 8DIP

DS1869-100

Manufacturer Part Number
DS1869-100
Description
IC RHEOSTAT DALLAST 3V 100K 8DIP
Manufacturer
Maxim Integrated Products
Series
Dallastat™r
Datasheet

Specifications of DS1869-100

Taps
64
Resistance (ohms)
100K
Number Of Circuits
1
Temperature Coefficient
750 ppm/°C Typical
Memory Type
Non-Volatile
Interface
Contact Closure
Voltage - Supply
± 2.7 V ~ 8 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Resistance In Ohms
100K
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
FEATURES
DESCRIPTION
The DS1869 Dallastat
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. The DS1869 operates from 3V or 5V supplies. 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 DS1869 is offered in two standard IC packages which include an 8-pin 300-mil DIP and an 8-pin
208-mil SOIC. The DS1869 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 DS1869
pinouts allow access to both ends of the potentiometer R
the digital source input, D, the up contact input, UC, and the down contact input, DC. Other pins include
the positive, +V, and negative, -V, supply inputs. The DS1869 is specified to operate from -40°C to
+85°C.
www.dalsemi.com
Replaces mechanical variable resistors
Operates from 3V or 5V supplies
Electronic interface provided for digital as
well as manual control
Internal pull-ups with debounce for easy
interfacing to mechanical push buttons
Wiper position is maintained in the absence of
power
Low cost alternative to mechanical controls
Applications include volume, tone, contrast,
brightness, and dimmer control
8-pin SOIC and 8-pin DIP packages are
available
Standard resistance values for Dallastat
-
-
-
Operating temperature range:
- Industrial: -40 C to +85 C
3V to 8V differential supply operational range
DS1869-10 ~ 10 k
DS1869-50 ~ 50 k
DS1869-100 ~ 100 k
TM
is a digital rheostat or potentiometer. This device provides 64 possible uniform
1 of 8
PIN ASSIGNMENT
PIN DESCRIPTION
R
R
R
-V, +V
UC
D
DC
L
H
W
L
, R
3V Dallastat
H
, and the wiper, R
(R
(R
(R
(R
UC
UC
H
D
H
L
D
L
)
)
)
)
See Mech. Drawings Section
See Mech. Drawings Section
- High Terminal of Potentiometer
- Wiper Terminal of Potentiometer
- Low Terminal of Potentiometer
- Voltage Supply Inputs
- Up Contact Input
- Digital Input
- Down Contact Input
8-Pin SOIC (208-mil)
8-Pin DIP (300-mil)
1
2
3
4
1
2
3
4
Digital Rheostat
W
TM
. Control inputs include
8
7
6
5
8
7
6
5
Electronic
+V
DC
(R
V-
+V
DC
(R
V-
DS1869
W
W
)
)
112099

Related parts for DS1869-100

DS1869-100 Summary of contents

Page 1

... SOIC and 8-pin DIP packages are available Standard resistance values for Dallastat - DS1869- DS1869- DS1869-100 ~ 100 k Operating temperature range: - Industrial differential supply operational range DESCRIPTION TM The DS1869 Dallastat is a digital rheostat or potentiometer. This device provides 64 possible uniform tap points over the entire resistive range. The standard resistive ranges are and 100 k . ...

Page 2

... Repetitive pulsed inputs can be used to step through each resistive position of the device in a relatively fast manner (see Figure 5b). The requirement for repetitive pulsed inputs is that pulses must be separated by a minimum time of 1 ms. If the input is not allowed to be inactive (high) for at least 1 ms, the DS1869 will interpret repetitive pulses as a single pulse. ...

Page 3

... All contact closure control inputs, UC, DC, and D, are internally pulled- 100 k =resistance. The UC and DC inputs are internally debounced and require no external components for input signal conditioning. DS1869 SINGLE PUSHBUTTON CONFIGURATION (TYPICAL EXAMPLE) Figure 1 DS1869 DUAL PUSHBUTTON CONFIGURATION (TYPICAL EXAMPLE) Figure 2A ...

Page 4

... DS1869 DUAL PORT CONFIGURATION (TYPICAL EXAMPLE) Figure 2B The DS1869 is provided with two supply inputs -V and +V. The maximum voltage difference between the two supply inputs is +8.0 volts. The minimum voltage difference is +2.7 volts. All input levels are referenced to the negative supply input, -V. The voltage applied to any Dallastat terminal must not exceed the negative supply voltage (- ...

Page 5

... FLOWCHART: ONE-BUTTON OPERATION AND ELECTRICAL CONTROL Figure 3 CONTACT OPEN AND CONTACT CLOSURE TIMING IS 1 SECOND 15 DS1869 ...

Page 6

... FLOWCHART: TWO-BUTTON OPERATION Figure 4 CONTACT OPEN AND CONTACT CLOSURE TIMING IS 1 SECOND 15 DS1869 ...

Page 7

... SYMBOL MIN TYP + 2.7V to 8.0V) SYMBOL MIN TYP - CC1 I CC2 R 400 W 750 (- + 2.7V to 8.0V) SYMBOL MIN TYP CPW HPW t 1 CCP DS1869 (- +85 C) MAX UNITS NOTES - MAX UNITS NOTES 1000 ppm/ C MAX UNITS NOTES ...

Page 8

... Pulses occurring faster than 1 ms apart may not be recognized as individual inputs but can be interpreted a constant input. Tolerance for pulse timing is 15% on minimum inputs. 9. Idle state supply current is measured with no pushbutton pressed and with the wiper R CMOS load. 10. For +V referenced 5V. 11. Valid only. t CPW DS1869 . IH tied ...

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