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DS3904, DS3905
Triple, 128-Position, Nonvolatile, Variable, Digital Resistor/Switch
Triple, 128-Position, Nonvolatile, Variable, Digital Resistors/Switches Simplify Automated PC Power-Supply Trim
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Status
Active: In Production.
Description
The DS3904/DS3905 contain three nonvolatile (NV) low
temperature coefficient, variable digital resistors. Each
resistor has 128 user-selectable positions. Additionally,
the DS3904/DS3905 have a high-impedance setting that
allows each resistor to function as a digital switch. The
DS3904/DS3905 can operate over a 2.7V to 5.5V supply
voltage range, and communication with the device is
achieved through a 2-wire serial interface. Address pins
allow multiple DS3904/DS3905s to operate on the same
two-wire bus. The DS3904 has one address pin, allowing
two DS3904s to share the bus, while the DS3905
has three address pins, allowing up to eight DS3905s to
share a common bus. The low-cost and small size of the
DS3904/DS3905 make them ideal replacements for conventional
mechanical trimming resistors.
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Data Sheet
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Key Features
- Three 20kΩ, 128-Position Linear Digital Resistors
- Resistor Settings are Stored in NV Memory
- Each Resistor has a High-Impedance Setting for Switch Operation to Control Digital Logic
- Low Temperature Coefficient
- 2-Wire Serial Interface
- 2.7V to 5.5V Operating Range
- -40°C to +85°C Industrial Temperature
- Packaging: 8-Pin µSOP for DS3904, 10-pin µSOP for DS3905
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Applications/Uses
- Cell Phones/PDAs
- Fibre Optic Transceiver Modules
- Portable Electronics
- Power-Supply Calibration
- Test Equipment
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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) |
ICC @5V
(µA) |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| typ |
max |
max w/pins |
See Notes |
| DS3905 |
Linear |
3 |
2-Wire Addressable |
Non-Volatile |
128 |
20 |
25 |
125 |
200 |
15.4 |
$0.75 @1k |
| DS3904 |
16.2 |
$0.70 @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
Typical Operating Circuit
Application Notes
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Notes |
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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| DS3904U-010+
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Active |
µMAX;8 pin;16.2 mm²
Outline Drawing:21-0036 (PDF)
Land Pattern: 90-0092 (PDF)
Use pkgcode/variation: U8+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| DS3904U-010+T&R
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Active |
µMAX;8 pin;16.2 mm²
Outline Drawing:21-0036 (PDF)
Land Pattern: 90-0092 (PDF)
Use pkgcode/variation: U8+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| DS3904U-020
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20kohms |
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Active |
µMAX;8 pin;16.2 mm²
Outline Drawing:21-0036 (PDF)
Land Pattern: 90-0092 (PDF)
Use pkgcode/variation: U8-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| DS3904U-020+
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20kohms |
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Active |
µMAX;8 pin;16.2 mm²
Outline Drawing:21-0036 (PDF)
Land Pattern: 90-0092 (PDF)
Use pkgcode/variation: U8+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| DS3904U-020+T&R
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20kohms |
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Active |
µMAX;8 pin;16.2 mm²
Outline Drawing:21-0036 (PDF)
Land Pattern: 90-0092 (PDF)
Use pkgcode/variation: U8+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| DS3904U-020/T&R
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20kohms |
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Active |
µMAX;8 pin;16.2 mm²
Outline Drawing:21-0036 (PDF)
Land Pattern: 90-0092 (PDF)
Use pkgcode/variation: U8-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| DS3905U-020
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20kohms |
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Active |
µMAX;10 pin;15.4 mm²
Outline Drawing:21-0061 (PDF)
Land Pattern: 90-0330 (PDF)
Use pkgcode/variation: U10-2*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| DS3905U-020+
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Active |
µMAX;10 pin;15.4 mm²
Outline Drawing:21-0061 (PDF)
Land Pattern: 90-0330 (PDF)
Use pkgcode/variation: U10+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| DS3905U-020+T&R
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Active |
µMAX;10 pin;15.4 mm²
Outline Drawing:21-0061 (PDF)
Land Pattern: 90-0330 (PDF)
Use pkgcode/variation: U10+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| DS3905U-020/T&R
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Active |
µMAX;10 pin;15.4 mm²
Outline Drawing:21-0061 (PDF)
Land Pattern: 90-0330 (PDF)
Use pkgcode/variation: U10-2*
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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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More Information
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Information Index
Rev 2;
2005-09-14
This page last modified: 2009-10-13
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