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MAX5400, MAX5401
256-Tap SOT-PoT, Low-Drift Digital Potentiometers in SOT23
256-Tap Digital Potentiometers Offer the Ultimate Space Savings in an 8-Pin SOT23
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Status
Active: In Production.
Description
The MAX5400/MAX5401 digital potentiometers offer 256-tap SOT-PoT™ digitally controlled variable resistors in tiny 8-pin SOT23 packages. Each device functions as a mechanical potentiometer, consisting of a fixed resistor string with a digitally controlled wiper contact. They 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 resistor taps, as well as a convenient power-on reset that sets the wiper to the midscale position at power-up. A low 5ppm/°C ratiometric temperature coefficient makes it ideal for applications requiring low drift.
The MAX5400/MAX5401 serve well in applications requiring digitally controlled resistors, including adjustable voltage references and programmable gain amplifiers (PGAs). A nominal end-to-end resistor temperature coefficient of 50ppm/°C allows these parts to be used as variable resistors in applications such as low-tempco adjustable gain and other circuit configurations.
Two resistance values are available: 50kΩ (MAX5400) and 100kΩ (MAX5401). 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
- Miniature 8-Pin SOT23 (3mm x 3mm)
- 256 Tap Positions
- Ultra-Low 0.1µA Supply Current
- Single-Supply Operation: +2.7V to +5.5V
- Low Ratiometric Temperature Coefficient: 5ppm/°C
- Power-On Reset: Wiper Goes to Midscale (Position 128)
- Glitchless Switching Between the Resistor Taps
- 3-Wire SPI™-Interface Compatible
- 50kΩ/100kΩ Resistor Values
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Applications/Uses
- Adjustable Voltage Reference
- Low-Drift Programmable-Gain Amplifiers
- Mechanical Potentiometer Replacements
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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 |
| MAX5400 |
Linear |
1 |
3-Wire Serial |
Volatile |
256 |
50 |
25 |
50 |
250 |
5 |
9 |
$0.90 @1k |
| MAX5401 |
100 |
$0.90 @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
Product Guides
Reliability Reports
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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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| MAX5400EKA
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Active |
SOT;8 pin;9 mm²
Outline Drawing:21-0078 (PDF)
Land Pattern: 90-0176 (PDF)
Use pkgcode/variation: K8SN-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX5400EKA+T
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Active |
SOT;8 pin;9 mm²
Outline Drawing:21-0078 (PDF)
Land Pattern: 90-0176 (PDF)
Use pkgcode/variation: K8SN+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX5400EKA-T
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Active |
SOT;8 pin;9 mm²
Outline Drawing:21-0078 (PDF)
Land Pattern: 90-0176 (PDF)
Use pkgcode/variation: K8SN-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX5401EKA
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Active |
SOT;8 pin;9 mm²
Outline Drawing:21-0078 (PDF)
Land Pattern: 90-0176 (PDF)
Use pkgcode/variation: K8SN-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX5401EKA+T
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Active |
SOT;8 pin;9 mm²
Outline Drawing:21-0078 (PDF)
Land Pattern: 90-0176 (PDF)
Use pkgcode/variation: K8SN+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX5401EKA-T
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Active |
SOT;8 pin;9 mm²
Outline Drawing:21-0078 (PDF)
Land Pattern: 90-0176 (PDF)
Use pkgcode/variation: K8SN-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.: 19-1848
Rev 0;
2001-01-26
This page last modified: 2009-12-22
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