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TEXAS INSTRUMENTS  LM1972M/NOPB  Audio Control, Attenuator, 4.5V to 12V, 3 Wire, Serial, SOIC, 20 Pins, 0 °C

TEXAS INSTRUMENTS LM1972M/NOPB

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Product Overview

The LM1972M/NOPB is a Micro-Pot 2-channel Audio Attenuator with mute fabricated on a CMOS process. Each channel has attenuation steps of 0.5dB from 0dB to 47.5dB, 1dB steps from 48dB to 78dB, with a mute function attenuating 104dB. Its logarithmic attenuation curve can be customized through software to fit the desired application. The performance of a μPot is demonstrated through its excellent Signal-to-Noise Ratio, extremely low (THD+N) and high channel separation. Each μPot contains a mute function that disconnects the input signal from the output, providing a minimum attenuation of 96dB. Transitions between any attenuation settings are pop free. The LM1972's 3-wire serial digital interface is TTL and CMOS compatible, receiving data that selects a channel and the desired attenuation level. The Data-Out pin of the attenuator allows multiple μPots to be daisy-chained together, reducing the number of enable and data lines to be routed for a given application.
  • 3-wire serial interface
  • Daisy-chain capability
  • 104dB Mute attenuation
  • Pop and click-free attenuation changes
  • Green product and no Sb/Br

Applications

Audio; Consumer Electronics
This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

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Product Information

Audio Control Type:
Attenuator
Supply Voltage Range:
4.5V to 12V
Control Interface:
3 Wire, Serial
Audio IC Case Style:
SOIC
No. of Pins:
20Pins
Operating Temperature Min:
0°C
Operating Temperature Max:
70°C
Packaging:
Each
Output Power:
150 mW
MSL:
MSL 3 - 168 hours
Control / Process Application:
Automated Studio Mixing Consoles, Music Reproduction Systems, Electronic Music(MIDI)
SVHC:
No SVHC (15-Jun-2015)

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Legislation and Environmental

Moisture Sensitivity Level:
MSL 3 - 168 hours
Product Traceability
RoHS Compliant:
Yes

Applications

  • Audio;
  • Consumer Electronics

Substitutes

LM1972MX/NOPB

IC,Tone/Volume/Balance Control,CMOS,SOP,20PIN,PLASTIC

TEXAS INSTRUMENTS

0

Price for: Each (Supplied on Full Reel)

1000+ $2.18

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