Rainbow Electronics DS1804 - Manual

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FEATURES
Single 100-position taper potentiometer
Nonvolatile “on-demand” wiper storage
Operates from 3V or 5V supplies
Up/down, increment-controlled interface
Available in 8-pin (300-mil) DIP, 8-pin
(150-mil) SOIC, 8-pin (118-mil) µSOP, and
Flip Chip packages
Operating Temperature:
–
Industrial: -40ºC to +85ºC
Standard Resistance Values:
–
DS1804-010 10 k
Ω
– DS1804-050 50 k
Ω
– DS1804-100 100 k
Ω
PIN ASSIGNMENT
PIN DESCIPTION
H - High-Terminal of Potentiometer
L - Low-Terminal of Potentiometer
W - Wiper of Potentiometer
V
CC
- 3V or 5V Power Supply
CS - Chip Select
U/ D - Up/Down Control
INC - Increment/Decrement Wiper Control
GND - Ground
DESCRIPTION
The DS1804 NV Trimmer Potentiometer is a nonvolatile digital potentiometer having 100 positions. The
device provides an ideal method for low-cost trimming applications using a CPU or manual control input
with minimal external circuitry. Wiper position of the DS1804 can be stored in EEPROM memory on
demand. The device’s wiper position is manipulated by a 3-terminal port that provides an increment/
decrement counter controlled interface. This port consists of the control inputs
CS , INC , and U/ D . The
DS1804 is available in three resistor grades, which include a 10 k
Ω, 50 kΩ, and 100 kΩ. The device is
provided in an industrial temperature grade. Additionally, the DS1804 will operate from 3V or 5V
supplies and is ideal for portable application requirements. Three packaging options are available and
include the 8-pin (300-mil) DIP, 8-pin (150-mil) SOIC, 8-pin (118-mil) uSOP, and the Flip Chip
Package.
DS1804
NV Trimmer Potentiometer
www.dalsemi.com
INC 1 8 V
CC
U/D 2 7 CS
H 3 6 L
GND 4 5 W
8-Pin DIP (300-mil)
8-Pin SOIC (150-mil)
8-Pin uSOP (118-mil)
8-Pin Flip Chip Package
See Mech. Drawings Section