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Part: MAX5161MEUT
Category:
Analog & Mixed-Signal Processing
-> Potentiometers
Description: Low-power, Digital Potentiometer. R(kom) 100.
Company: Maxim Integrated Products
Datasheet: Download MAX5161MEUT datasheet File size : 308 kB
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Datasheet text preview:
19-1435; Rev 2a; 2/01
Low-Power Digital Potentiometers
General Description
The MAX5160/MAX5161 linear-taper digital potentiometers perform the same function as a mechanical potentiometer 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 available 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-temperature-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 package. Both devices are guaranteed over the extendedindustrial temperature range (-40°C to +85°C). o 32 Tap Positions o 50k, 100k, and 200k Resistance Values o 400 Wiper Resistance o ±25% Resistance Tolerance o 3-Wire Serial Data Input o ±1LSB DNL o ±0.5LSB INL o 100nA Supply Current o +2.7V to +5.5V Single-Supply Operation 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
Features
MAX5160/MAX5161
Applications
LCD Screen Adjustment Volume Control Mechanical Potentiometer Replacement
Ordering Information
PART MAX5160NEUA MAX5160MEUA MAX5160LEUA MAX5161NEZT MAX5161MEZT MAX5161LEZT 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 PINPACKAGE 8 µMAX 8 µMAX 8 µMAX 6 SOT23 6 SOT23 6 SOT23 R (k) 200 100 50 200 100 50
R (k) 200 100 50 200 100 50
Selector Guide
PART MAX5160NEUA MAX5160MEUA MAX5160LEUA MAX5161NEZT MAX5161MEZT MAX5161LEZT TOP MARK -- -- -- AAAC AAAB AAAA
Functional Diagram
H VDD GND
Pin Configurations
TOP VIEW
L1 INC U/D H GND 1 2 3 4 8 VDD CS L W GND 3 4 U/D H2 7 6 5 6 VDD
CS INC U/D UP/DN COUNTER POSITION DECODER
MAX5160 MAX5161
MAX5160
MAX5161
5
INC
W
µMAX
SOT23-6
L
________________________________________________________________Maxim Integrated Products
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For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
Low-Power Digital Potentiometers MAX5160/MAX5161
ABSOLUTE MAXIMUM RATINGS
VDD to GND .....-0.3V to +6V CS, INC, U/D to GND .....-0.3V to +6V H, L, W to GND......... -0.3V to (VDD + 0.3V) Input and Output Latchup Immunity ......±200mA Maximum Continuous Current into H, L, and W MAX516_ _ E_ _......±1mA Continuous Power Dissipation (TA = +70°C) 6-Pin SOT23 (derate 6.25mW/°C above +70°C)..500mW 8-Pin µMAX (derate 4.1mW/°C above +70°C) .....330mW Operating Temperature Range .. -40°C to +85°C Storage Temperature Range .....-65°C to +150°C Lead Temperature (soldering, 10s) ........+300° C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VDD = +2.7V to +5.5V, VH = VDD, VL = 0, TA = TMIN to TMAX. Typical values are at VDD = +5V, TA = +25°C, unless otherwise noted.) PARAMETER DC PERFORMANCE Resolution Integral Nonlinearity (Note 1) Differential Nonlinearity (Note 1) End-to-End Resistor Tempco Ratiometric Resistor Tempco Full-Scale Error Zero-Scale Error Wiper Resistance Wiper Capacitance End-to-End Resistance DIGITAL INPUTS Input High Voltage Input Low Voltage Input Leakage Current Input Capacitance TIMING CHARACTERISTICS (Figure 6) CS to INC Setup Time CS to INC Hold Time INC Low Period INC High Period U/D to INC Hold U/D to INC Setup Wiper-Settling Time INC Frequency POWER SUPPLIES Supply Voltage Supply Current VDD IDD CS = INC = U/D = VDD or GND VDD = +5V VDD = +2.7V 2.7 0.6 135 5.5 10 V µA nA tCI tIC tIL tIH tID tDI tIW fIMAX 25 0 25 25 0 50 1 7 ns ns ns ns ns ns µs MHz 5 VIH VIL 0.7 VDD 0.3 VDD ±1 V V µA pF RW CW MAX516_NE_ _ HL MAX516_ME_ _ MAX516_LE_ _ 150 75 37.5 400 10 200 100 50 250 125 62.5 k INL DNL TCR 50 5 -0.1 +0.1 1700 3 ±1/2 ±1 % LSB LSB ppm/°C ppm/°C LSB LSB pF SYMBOL CONDITIONS MIN TYP MAX UNITS
Note 1: For the MAX5160, linearity is defined in terms of H to L code-dependent resistance. 2 _______________________________________________________________________________________
Low-Power Digital Potentiometers
Typical Operating Characteristics
(VDD = +5V, TA = +25°C, unless otherwise noted.)
WIPER RESISTANCE vs. WIPER VOLTAGE
MAX5160/61 toc01
MAX5160/MAX5161
END-TO-END RESISTANCE % CHANGE vs. TEMPERATURE
END-TO-END RESISTANCE % CHANGE 0.04 0.02 0 -0.02 -0.04 -0.06 -0.08 -0.10 -0.12 -0.14 -0.16 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 TEMPERATURE (°C) 200k 50k 100k 100k 200k 50k
MAX5160/61 toc02
1,000 RWMAX = 574.0804 800 WIPER RESISTANCE () VDD = +2.7V
0.06
600
400
VDD = +5V
200
0 0 1 2 3 4 5 WIPER VOLTAGE (V)
END-TO-END RESISTANCE vs. TAP POSITION
MAX5160/61 toc03
END-TO-END RESISTANCE vs. TAP POSITION
100 90 80 RESISTANCE (k) 70 60 50 40 30 20 10 0 1 5 9 13 17 21 25 29 33 TAP POSITION 100k
MAX5160/61 toc04
225 200 175 RESISTANCE (k) 150 125 100 75 50 25 0 1 5 9 13 17 21 25 29 200k
110
33
TAP POSITION
END-TO-END RESISTANCE vs. TAP POSITION
45 40 RESISTANCE (k) 35 30 25 20 15 10 5 0 1 5 9 13 17 21 25 29 33 TAP POSITION 50k
MAX5160/61 toc05
50
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