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


Image is for illustrative purposes only. Please refer to product description.

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


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.
Back to top

Product Specifications, Documents & More

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


Availability:  32

Available until stock is exhausted

  • 32 in stock for same day shipping

Price for: Each 1

Minimum order quantity: 1

Order multiple quantity: 1

Price: $5.86 $5.86



Quantity List Price
1 - 9 $5.86
10 - 99 $4.71
100 - 249 $4.29
250 - 499 $3.33
500 - 999 $3.12
1000 - 2499 $2.74
2500 - 4999 $2.72
5000+ $2.60

Legislation and Environmental

Back to top

Similar Products

Find products functionally similar to this one. Select one of the following links, and you will be taken to a product group page that presents all products in this category that share the given attribute.

Back to top

Customer Reviews

Customer Q&A Exchange


Like to see information about this product from other customers?

 Read discussions, blogs, documents from our community members.


Post a question to one of our experts or start a discussion and get responses from supplier experts and fellow engineers in our community.
Back to top


  Newark Part No. Manufacturer Part No Manufacturer / Description
Availability Price Qty
ascdsc ascdsc ascdsc ascdsc ascdsc



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


Price for: Full Reel 1

1000+ $2.55 2000+ $2.39 5000+ $2.34

    More stock available week commencing 5/16/16

Not Normally Stocked

Non-Cancelable / Non Returnable

Associated Products

Customers Also Bought