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MAX5487, MAX5488, MAX5489
Dual, 256-Tap, Nonvolatile, SPI-Interface, Linear-Taper Digital Potentiometers
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Status
Description
The MAX5487/MAX5488/MAX5489 dual, linear-taper, digital potentiometers function as mechanical potentiometers with a simple 3-wire SPI™-compatible digital interface that programs the wipers to any one of 256 tap positions. These digital potentiometers feature a nonvolatile memory (EEPROM) to return the wipers to their previously stored positions upon power-up.
The MAX5487 has an end-to-end resistance of 10kΩ, while the MAX5488 and MAX5489 have resistances of 50kΩ and 100kΩ, respectively. These devices have a low 35ppm/°C end-to-end temperature coefficient, and operate from a single +2.7V to +5.25V supply.
The MAX5487/MAX5488/MAX5489 are available in 16-pin 3mm x 3mm x 0.8mm thin QFN or 14-pin TSSOP packages. Each device is guaranteed over the extended -40°C to +85°C temperature range.
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Data Sheet
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An evaluation kit is available: MAX5488EVKIT NOTE: This product uses the following:MAX5488 EVKIT Software
Key Features
- Wiper Position Stored in Nonvolatile Memory (EEPROM) and Recalled Upon Power-Up or Recalled by an Interface Command
- 3mm x 3mm x 0.8mm, 16-Pin Thin QFN or 14-Pin TSSOP Packages
- ±1 LSB INL, ±0.5 LSB DNL (Voltage-Divider Mode)
- 256 Tap Positions
- 35ppm/°C End-to-End Resistance Temperature Coefficient
- 5ppm/°C Ratiometric Temperature Coefficient
- 10kΩ, 50kΩ, and 100kΩ End-to-End Resistance Values
- SPI-Compatible Serial Interface
- Reliability
- 200,000 Wiper Store Cycles
- 50-Year Wiper Data Retention
- +2.7V to +5.25V Single-Supply Operation
- EV Kit Available
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Applications/Uses
- Audio Volume Control
- LCD Screen Adjustment
- Low-Drift Programmable Filters
- Low-Drift Programmable-Gain Amplifiers
- Mechanical Potentiometer Replacement
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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 |
| MAX5487 |
Linear |
2 |
3-Wire Serial SPI |
Non-Volatile |
256 |
10 |
25 |
35 |
325 |
1 |
9.6 |
$1.60 @1k |
| MAX5488 |
50 |
33.4 |
$1.60 @1k |
| MAX5489 |
100 |
9.6 |
$1.60 @1k |
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See All Digital Potentiometers (129)
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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
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Information Index
Document Ref.: 19-3478
Rev 4;
2010-08-30
This page last modified: 2010-08-30
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