MAX5160-MAX5161 MAXIM [Maxim Integrated Products], MAX5160-MAX5161 Datasheet

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MAX5160-MAX5161

Manufacturer Part Number
MAX5160-MAX5161
Description
Low-Power Digital Potentiometers
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
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).
19-1435; Rev 1; 4/99
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
LCD Screen Adjustment
Volume Control
Mechanical Potentiometer Replacement
GND
V
U/D
INC
CS
DD
COUNTER
UP/DN
MAX5160
MAX5161
________________________________________________________________ Maxim Integrated Products
General Description
Functional Diagram
POSITION
DECODER
Low-Power Digital Potentiometers
H
Applications
L
W
MAX5160NEUA
MAX5160MEUA
MAX5160LEUA
MAX5161NEUT
MAX5161MEUT
MAX5161LEUT
32 Tap Positions
50kΩ, 100kΩ, and 200kΩ Resistance Values
400Ω Wiper Resistance
±25% Resistance Tolerance
3-Wire Serial Data Input
±1LSB DNL
±0.5LSB INL
100nA Supply Current
Single-Supply Operation: +2.7V to +5.5V
Power-On Reset: Wiper Goes to Midscale
(position 16)
±2kV ESD Protection
Small-Footprint Packages
Glitchless Switching Between the Resistor Taps
GND
INC
U/D
TOP VIEW
H
PART
6-Pin SOT23 (MAX5161)
8-Pin µMAX (MAX5160)
3
4
1
2
MAX5160
MAX
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Ordering Information
8
7
6
5
V
CS
L
W
Pin Configurations
DD
GND
H
L
1
2
3
PIN-
PACKAGE
8 µMAX
8 µMAX
8 µMAX
6 SOT23-6
6 SOT23-6
6 SOT23-6
SOT23-6
MAX5161
Features
6
5
4
(kΩ)
200
100
200
100
50
50
V
INC
U/D
R
DD
1

Related parts for MAX5160-MAX5161

MAX5160-MAX5161 Summary of contents

Page 1

... 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 ...

Page 2

... IMAX POWER SUPPLIES Supply Voltage V DD Supply Current I DD Note 1: For the MAX5160, linearity is defined in terms code-dependent resistance. 2 _______________________________________________________________________________________ Continuous Power Dissipation (T 6-Pin SOT23 (derate 8.7mW/°C above +70°C).............696mW + 0.3V) 8-Pin µMAX (derate 4.1mW/°C above +70°C) ..............330mW DD Operating Temperature Range .......................... -40°C to +85°C Storage Temperature Range .............................-65° ...

Page 3

Low-Power Digital Potentiometers (V = +5V +25°C, unless otherwise noted WIPER RESISTANCE vs. WIPER VOLTAGE 1,000 R = 574.0804 WMAX 800 V = +2.7V DD 600 400 V = +5V DD 200 ...

Page 4

... Low-Power Digital Potentiometers (V = +5V +25°C, unless otherwise noted SUPPLY CURRENT vs. TEMPERATURE 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -40 - TEMPERATURE (°C) PIN PIN NAME MAX5160 MAX5161 INC U GND 5 — — _______________________________________________________________________________________ Typical Operating Characteristics (continued) ...

Page 5

... The H and L terminals of the MAX5160 are similar to the two end terminals of a mechanical potentiometer. The tap W is equivalent to the variable tap (wiper) of the potentiometer ...

Page 6

... LCD Bias Control Alternatively, use an op amp to provide buffering and gain to the output of the MAX5160/MAX5161. Connect the MAX5160 to the positive input of a noninverting op amp (Figure 3) to select a portion of the input signal by digitally controlling the wiper terminal. Figure 4 shows a similar circuit for the MAX5161. ...

Page 7

Low-Power Digital Potentiometers CS INC U/D W Figure 6. Serial-Interface Timing Diagram Truth Table CS INC U Don’t care O = Previous state + = Increment — ...

Page 8

Low-Power Digital Potentiometers Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied ...

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