LM1971M/NOPB
Overview
Category: Integrated Circuit
Use: Audio Volume Control
Characteristics: High-performance, digitally controlled audio attenuator
Package: 8-pin SOIC (Small Outline Integrated Circuit)
Essence: Provides precise volume control in audio applications
Packaging/Quantity: Tape and Reel, 2500 units per reel
Specifications and Parameters
- Supply Voltage: 2.7V to 5.5V
- Total Harmonic Distortion + Noise (THD+N): 0.01%
- Attenuation Range: 0dB to -127.5dB
- Number of Channels: 1 (Mono)
- Digital Interface: I²C (Inter-Integrated Circuit)
- Operating Temperature Range: -40°C to +85°C
Pin Configuration
The LM1971M/NOPB features an 8-pin SOIC package with the following pin configuration:
┌───┬───┐
│ 1 │ 8 │
│ │ │
│ │ │
│ │ │
│ │ │
│ │ │
│ │ │
│ 4 │ 5 │
└───┴───┘
Pin Description: 1. VDD: Positive Power Supply 2. SDA: Serial Data Input/Output for I²C Communication 3. GND: Ground 4. NC: No Connection 5. NC: No Connection 6. NC: No Connection 7. SCL: Serial Clock Input for I²C Communication 8. OUT: Audio Output
Functional Characteristics
The LM1971M/NOPB is a digitally controlled audio attenuator that provides precise volume control in audio applications. It utilizes an I²C interface for communication and offers an attenuation range of 0dB to -127.5dB. The device operates on a supply voltage ranging from 2.7V to 5.5V and exhibits low total harmonic distortion and noise (THD+N) of 0.01%.
Advantages and Disadvantages
Advantages: - High-performance audio volume control - Precise and accurate attenuation - Wide attenuation range - Low THD+N - Easy integration with I²C interface
Disadvantages: - Mono-channel only - Limited operating temperature range
Applicable Range of Products
The LM1971M/NOPB is suitable for various audio applications that require precise volume control, such as: - Audio amplifiers - Home theater systems - Professional audio equipment - Automotive audio systems - Portable audio devices
Working Principles
The LM1971M/NOPB works by digitally controlling the attenuation level of the audio signal passing through it. The I²C interface allows the user to send commands to the device, specifying the desired volume level. The LM1971M/NOPB then adjusts the attenuation accordingly, providing a precise and controlled audio output.
Detailed Application Field Plans
The LM1971M/NOPB can be used in a wide range of audio-related fields, including: 1. Audio Amplifiers: Provides volume control functionality in audio amplifier circuits. 2. Home Theater Systems: Enables precise adjustment of audio levels in home theater setups. 3. Professional Audio Equipment: Offers accurate volume control in professional audio gear. 4. Automotive Audio Systems: Allows for fine-tuning of audio levels in car audio systems. 5. Portable Audio Devices: Provides digital volume control in portable music players and smartphones.
Detailed Alternative Models
Some alternative models to the LM1971M/NOPB include: - LM1972M/NOPB: Dual-channel version of the LM1971M/NOPB. - LM1973M/NOPB: Higher-performance audio attenuator with extended features. - LM1974M/NOPB: Stereo audio volume control IC for stereo applications.
5 Common Technical Questions and Answers
Q: What is the maximum attenuation level of the LM1971M/NOPB? A: The LM1971M/NOPB can provide an attenuation level as low as -127.5dB.
Q: Can the LM1971M/NOPB be used in battery-powered devices? A: Yes, the LM1971M/NOPB operates on a supply voltage range of 2.7V to 5.5V, making it suitable for battery-powered applications.
Q: Does the LM1971M/NOPB support multiple channels? A: No, the LM1971M/NOPB is a mono-channel audio attenuator.
Q: What is the