DS1804_11 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – Nonvolatile Trimmer Potentiometer Operates from 3V or 5V Supplies

19-5876; Rev 6/11
DS1804
Nonvolatile Trimmer Potentiometer
FEATURES
 Single 100-Position Taper Potentiometer
 Nonvolatile (NV) On-Demand Wiper
Storage
 Operates from 3V or 5V Supplies
 Up/Down, Increment-Controlled Interface
 Available in 8-Pin (300 mils) DIP, 8-Pin
(150 mils) SO, and 8-Pin (118 mils) µSOP
 -40°C to +85°C Operating Temperature
Range
 Standard Resistance Values:
– DS1804-010: 10kΩ
– DS1804-050: 50kΩ
– DS1804-100: 100kΩ
PIN ASSIGNMENT
INC 1
U/D 2
H3
GND 4
8 V_CC
7 CS
6L
5W
DIP (300 mils)
SO (150 mils)
μSOP (118 mils)
PIN DESCRIPTION
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 that has 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 three-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 10kΩ, 50kΩ, and 100kΩ. 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 mils) DIP, 8-pin (150 mils) SO, and 8-pin (118 mils) μSOP.
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