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source_url: https://huluic.cn/product/texas-instruments-incorporated/lm1972mnopb/0QMRwxZ0
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# 元件详情：LM1972MNOPB

- **型号**: LM1972MNOPB
- **oneic 编号**: 136-LM1972MNOPB
- **厂商**: Texas Instruments Incorporated
- **描述**: None The LM1972 is a digitally controlled 2-channel 78dB audio attenuator fabricated on a CMOS process. Each channel has attenuation    steps of 0.5dB from 0dB–47.5dB, 1.0dB steps from 48dB–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 LM1972 allows multiple μPots to be daisy-chained together, reducing the number    of enable and data lines to be routed for a given application.  Product Highlights:               •         3-wire serial interface                           •         Daisy-chain capability                           •         104dB mute attenuation                           •         Pop and click free attenuation changes                        Potential Applications:               •         Automated studio mixing consoles                           •         Music reproduction systems                           •         Sound reinforcement systems                           •         Electronic music (MIDI)                           •         Personal computer audio control

## 规格参数

### 商业参数

| 参数 | 值 |
| --- | --- |
| 标准包装规格 | 36 |

## 实时报价

> 报价接口（需 API Key）：`https://r.huluic.cn/v2/offers/LM1972MNOPB`

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