MAX5160 Datasheet, PDF (1/8 Pages) Maxim Integrated Products – Low-Power Digital Potentiometers

19-1435; Rev 1; 4/99
Low-Power Digital Potentiometers
General Description
The MAX5160/MAX5161 linear-taper digital potentiome-
ters perform the same function as a mechanical poten-
tiometer or a variable resistor. They consist of a fixed
resistor and a wiper contact with 32 tap points that are
digitally controlled by three lines for the 8-pin MAX5160
or by two lines for the 6-pin MAX5161.
These parts are ideal for applications requiring digitally
controlled resistors. Three resistance values are avail-
able for each part type: 50kΩ, 100kΩ, and 200kΩ. A
nominal resistor temperature coefficient of 50ppm/°C
end-to-end and only 5ppm/°C ratiometric makes the
MAX5160 ideal for applications requiring a low-temper-
ature-coefficient variable resistor, such as low-tempco,
adjustable-gain circuit configurations.
The MAX5160 is available in an 8-pin µMAX package,
and the MAX5161 is available in a 6-pin SOT23 pack-
age. Both devices are guaranteed over the extended-
industrial temperature range (-40°C to +85°C).
Applications
LCD Screen Adjustment
Volume Control
Mechanical Potentiometer Replacement
Functional Diagram
H
V_DD
GND
MAX5160
MAX5161
CS
INC
UP/DN
COUNTER
POSITION
DECODER
W
U/D
L
Features
o 32 Tap Positions
o 50kΩ, 100kΩ, and 200kΩ Resistance Values
o 400Ω Wiper Resistance
o ±25% Resistance Tolerance
o 3-Wire Serial Data Input
o ±1LSB DNL
o ±0.5LSB INL
o 100nA Supply Current
o Single-Supply Operation: +2.7V to +5.5V
o Power-On Reset: Wiper Goes to Midscale
(position 16)
o ±2kV ESD Protection
o Small-Footprint Packages
6-Pin SOT23 (MAX5161)
8-Pin µMAX (MAX5160)
o Glitchless Switching Between the Resistor Taps
Ordering Information
PART
TEMP. RANGE
PIN-
PACKAGE
R
(kΩ)
MAX5160NEUA -40°C to +85°C 8 µMAX
200
MAX5160MEUA -40°C to +85°C 8 µMAX
100
MAX5160LEUA -40°C to +85°C 8 µMAX
50
MAX5161NEUT -40°C to +85°C 6 SOT23-6
200
MAX5161MEUT -40°C to +85°C 6 SOT23-6
100
MAX5161LEUT -40°C to +85°C 6 SOT23-6
50
TOP VIEW
Pin Configurations
INC 1
U/D 2
H3
GND 4
MAX5160
µMAX
L1
8 V_DD
7 CS
6L
H2
5W
GND 3
MAX5161
6 V_DD
5 INC
4 U/D
SOT23-6
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