DS1881
PRODUCTIONDual NV Audio Taper Digital Potentiometer
Provides Low-Noise, Low-Distortion Digital Volume Control for Single-Supply Applications
- Part Models
- 4
- 1ku List Price
- Starting From $1.43
Part Details
- Dual, Audio Log Taper Potentiometers
- Low THD+N and Crosstalk
- 5V Analog Supply (Independent of Digital Supply)
- 3V to 5V Digital Supply Range
- Potentiometer Settings Configurable as NV 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
The DS1881 is a dual, nonvolatile (NV) digital potentiometer designed to operate in audio systems that require 5V signal levels. The potentiometer settings can be stored in EEPROM so that they are retained when the power is cycled. The DS1881 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 device 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 DS1881 is both software and pin compatible with the DS1808 in 5V applications.
Applications
- Car Stereo
- Consumer Audio/Video
- Notebook and PC Audio
- Portable Audio Equipment
Documentation
Data Sheet 1
Reliability Data 1
Design Note 1
Technical Articles 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| DS1881E-050+ | Thin Shrink Small-Outline Package | ||
| DS1881E-050+T&R | Thin Shrink Small-Outline Package | ||
| DS1881Z-050+ | Small-Outline IC, Narrow (0.15in) | ||
| DS1881Z-050+T&R | Small-Outline IC, Narrow (0.15in) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
| No Match Found | ||
|
Dec 11, 2018 - 1754N ASSEMBLY |
||
| DS1881E-050+ | PRODUCTION | |
| DS1881E-050+T&R | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Digital Potentiometers (DigiPOT) 1 | ||
| DS1882 | PRODUCTION | Dual Log Audio Digital Potentiometer |
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