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MAX5128
128-Tap, Nonvolatile, Linear-Taper Digital Potentiometer in 2mm x 2mm µDFN Package
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Status
Active: In Production.
Description
The MAX5128 nonvolatile, single, linear-taper, digital
potentiometer performs the function of a mechanical
potentiometer, but replaces the mechanics with a simple
2-wire digital interface. The MAX5128 performs the
same function as a discrete potentiometer or variable
resistor and features 128 taps and 22kΩ end-to-end
resistance. The MAX5128 also features an ultra-small,
2mm x 2mm µDFN package and low 0.5µA (typ) standby
supply current, making this device ideal for portable
applications. The MAX5128 operates from a +2.7V to
+5.25V power supply. An integrated nonvolatile memory
recalls the programmed wiper position of the digital
potentiometer. A simple 2-wire up/down interface programs
the wiper position. The digital potentiometer provides
a low 5ppm/°C ratiometric temperature coefficient
and is specified 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: MAX5128EVCMAXQU+, MAX5128EVKIT+ NOTE: This product uses the following:MAX5128 EVKIT Software
Key Features
- Ultra-Small, 2mm x 2mm, 8-Pin µDFN Package
- Power-On Recall of Wiper Position from Nonvolatile Memory
- 22kΩ End-to-End Resistance
- 128 Tap Positions
- 5ppm/°C Ratiometric Temperature Coefficient
- 1.5µA (max) Standby Supply Current
- +2.7V to +5.25V Single Supply Operation
- 80,000 Wiper Store Cycles
- 50-Year Wiper Data Retention
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Applications/Uses
- Backlight Adjustment
- Bias Setting for Radios
- Fiber-Module Bias Setting
- LED Bias Adjustment
- Portable Consumer Electronics
- Power-Supply Modules
- VCOM Adjustment for LCD Panels
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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 |
| MAX5128 |
Linear |
1 |
Up/Down |
Non-Volatile |
128 |
22 |
25 |
50 |
600 |
1.5 |
4.2 |
$0.68 @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
Application Notes
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX5128ELA+
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Active |
µDFN;8 pin;4.2 mm²
Outline Drawing:21-0164 (PDF)
Land Pattern: 90-0005 (PDF)
Use pkgcode/variation: L822+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX5128ELA+T
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Active |
µDFN;8 pin;4.2 mm²
Outline Drawing:21-0164 (PDF)
Land Pattern: 90-0005 (PDF)
Use pkgcode/variation: L822+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX5128ELA-T
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Active |
µDFN;8 pin;4.2 mm²
Outline Drawing:21-0164 (PDF)
Land Pattern: 90-0005 (PDF)
Use pkgcode/variation: L822-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Information Index
Document Ref.: 19-3929
Rev 2;
2007-06-08
This page last modified: 2007-08-08
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