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MAX5403, MAX5404, MAX5405
Dual, 256-Tap, Low-Drift, Digital Potentiometers in 10-µMAX
Industry's Smallest Dual Digital Potentiometer
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Status
Active: In Production.
Description
The MAX5403/MAX5404/MAX5405 is a family of dual
linear taper digital potentiometers. Each device has one
3-terminal potentiometer and one 2-terminal variable
resistor (Figure 1). The MAX5403/MAX5404/MAX5405
operate from +2.7V to +5.5V single-supply voltages
and use an ultra-low supply current of 0.1µA. These
devices also provide glitchless switching between
resistors taps as well as a convenient power-on reset
(POR) that sets the wiper to the midscale position at
power-up. The potentiometer consists of a fixed resistor
with a wiper contact that is digitally controlled through a
3-wire serial interface and has 256-tap points. It performs
the same function as a discrete potentiometer or
variable resistor.
These parts are ideal for applications requiring digitally
controlled resistors. Three resistance values are available:
10kΩ (MAX5403),
50kΩ (MAX5404), and
100kΩ
(MAX5405). A nominal resistor-temperature coefficient
of 35ppm/°C end-to-end and 5ppm/°C ratiometric make
the MAX5403/MAX5404/MAX5405 ideal for applications
requiring low temperature-coefficient variable resistors,
such as adjustable-gain circuit configurations.
The MAX5403/MAX5404/MAX5405 are available in a 10-pin µMAX® package. Each device is guaranteed over the
extended industrial temperature range (-40°C to +85°C).
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Data Sheet
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Key Features
- 10-Pin µMAX Small Footprint Package
- 256-Tap Positions
- Ultra Low 0.1µA Supply Current
- +2.7V to +5.5V Single-Supply Operation
- Low End-To-End Temperature Coefficient:
35ppm/°C
- Low Ratiometric Temperature Coefficient:
5ppm/°C
- Power-On Reset: Wiper Goes to Midscale
(Position 128)
- Glitchless Switching Between Resistor Taps
- 3-Wire SPI™-Interface Compatible
- 10kΩ/50kΩ/100kΩ Resistor Values
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Applications/Uses
- Adjustable Voltage Reference
- Impedance Matching
- LCD Screen Adjustment
- Low-Drift Programmable Gain Amplifier (PGA)
- Mechanical Potentiometer Replacement
- Programmable Filters, Delays, Time Constant
- Volume Control
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Key Specifications:
| Digital Potentiometers |
| Part Number |
Taper |
POTs |
Control Interface |
Wiper Memory |
Steps |
REND-TO-END
(kΩ) |
Res. Tol.
(%) |
Temp. Coeff.
(ppm/°C) |
Wiper Resistance
(Ω) |
ICC @5V
(µA) |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| typ |
typ |
max |
max w/pins |
See Notes |
| MAX5403 |
Linear |
2 |
3-Wire Serial SPI |
Volatile |
256 |
10 |
25 |
35 |
275 |
5 |
15.4 |
$2.01 @1k |
| MAX5404 |
50 |
$2.01 @1k |
| MAX5405 |
100 |
$2.01 @1k |
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See All Digital Potentiometers (126)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Functional Diagram
More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-1934
Rev 2;
2005-12-16
This page last modified: 2009-10-26
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