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DS1882
Dual Log Audio Digital Potentiometer
Provides Low-Noise, Low-Distortion Digital Volume Control for Dual-Supply Applications
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Status
Active: In Production.
Description
The DS1882 is a dual, nonvolatile (NV) digital potentiometer designed to operate in audio systems that accomodate up to ±7V signal levels. The potentiometer settings can be stored in EEPROM so that they are retained when the power is cycled. The DS1882 has separate supplies for the potentiometers (VCC) and the communication circuitry (VDD). For clickless/popless operation, a zero-crossing detector allows the wiper position to change when there is no voltage across the potentiometer. The DS1882 is also designed to minimize crosstalk, and the two digital potentiometers provide 0.5dB channel-to-channel matching to prevent volume differences between channels. Total harmonic distortion (THD) is also minimal as long as the wiper
drives a high-impedance load.
Two attenuation configuration options provide optimum flexibility for the specific application. Configuration Option 1 provides 63 logarithmic tapered steps (0dB to -62dB, 1dB/step) plus a mute setting. Configuration Option 2 has 32 logarithmic steps plus mute and provides software compatibility with the DS1808. When Configuration Option 2 is used in combination with the 16-pin SO package, the DS1882 is both software and pin compatible with the DS1808 in 5V applications.
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Data Sheet
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Key Features
- Dual, Audio Log Taper Potentiometers
- Low THD+N and Crosstalk
- ±7V Analog Supply (Independent of Digital Supply)
- 5V Digital Supply
- Potentiometer Settings Configurable as Nonvolatile or Volatile
- Zero-Crossing Detector Eliminates Switching Noise
- Two User-Configurable Attenuation Options
- Configuration Option 1: 63 Positions Provide 1dB Attenuation Steps from 0dB to -62dB Plus Mute
- Configuration Option 2: (Software-Compatible with the DS1808): 33 Positions Plus Mute as Follows
- Positions 0–12: 1dB per Step for 12 Steps
- Positions 13–24: 2dB per Step for 12 Steps
- Positions 25–32: 3dB per Step for 8 Steps
- I²C-Compatible Serial Interface
- Three Address Pins Allow Up to 8 Devices on I²C Bus
- 45kΩ Potentiometer End-to-End Resistance
- Industrial Temperature Range (-40°C to +85°C)
- 16-Pin TSSOP or SO Package
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Applications/Uses
- Car Stereo
- Consumer Audio/Video
- Notebook and PC Audio
- Portable Audio 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) |
Wiper Resistance
(Ω) |
ICC @5V
(µA) |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| typ |
typ |
max |
max w/pins |
See Notes |
| DS1882 |
Log |
2 |
I2C |
Non-Volatile |
64 |
45 |
20 |
30 |
160 |
200 |
61.9 |
$1.16 @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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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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| DS1882E-050+
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| DS1882E-050+T&R
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| DS1882Z-050+
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Active |
SOIC(N);16 pin;61.9 mm²
Outline Drawing:21-0041 (PDF)
Land Pattern: 90-0097 (PDF)
Use pkgcode/variation: S16+5*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| DS1882Z-050+T&R
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Active |
SOIC(N);16 pin;61.9 mm²
Outline Drawing:21-0041 (PDF)
Land Pattern: 90-0097 (PDF)
Use pkgcode/variation: S16+5*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
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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Similar Products by Function
| DS1881 |
Dual NV Audio Taper Digital Potentiometer |
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Didn't Find What You Need?
Information Index
Rev 0;
2006-07-12
This page last modified: 2010-05-27
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