max5161leut Maxim Integrated Products, Inc., max5161leut Datasheet

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max5161leut

Manufacturer Part Number
max5161leut
Description
Low-power Digital Potentiometers
Manufacturer
Maxim Integrated Products, Inc.
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: 50k , 100k , and 200k . 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
50k , 100k , and 200k Resistance Values
400 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
(k )
200
100
200
100
50
50
V
INC
U/D
R
DD
1

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max5161leut Summary of contents

Page 1

... Power-On Reset: Wiper Goes to Midscale (position 16) ±2kV ESD Protection Small-Footprint Packages 6-Pin SOT23 (MAX5161) 8-Pin µMAX (MAX5160) Glitchless Switching Between the Resistor Taps Applications PART MAX5160NEUA MAX5160MEUA MAX5160LEUA MAX5161NEUT MAX5161MEUT MAX5161LEUT H TOP VIEW INC 1 U GND 4 L Features Ordering Information PIN- TEMP ...

Page 2

Low-Power Digital Potentiometers ABSOLUTE MAXIMUM RATINGS V to GND ..............................................................-0.3V to +6V DD CS, INC, U/D to GND ...............................................-0. GND.......................................... -0. Input and Output Latchup Immunity ..............................±200mA Maximum Continuous Current into H, ...

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 ...

Page 5

Low-Power Digital Potentiometers Detailed Description The MAX5160/MAX5161 consist of resistor arrays with 31 resistive elements. Thirty-two tap points are accessi- ble to the wiper along the resistor string between H and L. Logic inputs CS, U/D, and INC determine the ...

Page 6

Low-Power Digital Potentiometers Alternative Positive 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 ...

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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