Overview
The PGA4311UA/1K is a high-performance, digitally controlled audio volume control IC manufactured by Texas Instruments. Designed for professional audio and consumer electronics applications, this product offers precise volume adjustment, low distortion, and high signal-to-noise ratio (SNR). Its market positioning targets audio engineers, system integrators, and manufacturers of high-fidelity audio equipment. The PGA4311UA/1K stands out for its advanced digital control interface, compact packaging, and superior audio performance, making it a competitive choice in the audio processing market.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage | ±5 | V | Dual supply |
| Operating Temperature | -40 to +85 | °C | |
| Total Harmonic Distortion (THD) | 0.0005 | % | Typical |
| Signal-to-Noise Ratio (SNR) | 120 | dB | Typical |
| Gain Range | -95.5 to +31.5 | dB | 0.5 dB steps |
| Control Interface | SPI | Serial Peripheral Interface | |
| Package | TSSOP-28 | Surface mount | |
| Power Consumption | 15 | mW | Typical |
Key Features
- Precise Volume Control: Offers a wide gain range with 0.5 dB steps for accurate audio level adjustment.
- Low Distortion: Ensures high-fidelity audio output with minimal harmonic distortion.
- High SNR: Delivers clear audio signals with a signal-to-noise ratio of up to 120 dB.
- Digital Control Interface: Supports SPI for easy integration with microcontrollers and digital systems.
- Compact Packaging: Available in a TSSOP-28 package, suitable for space-constrained designs.
Applications
The PGA4311UA/1K is widely used in professional audio equipment, consumer electronics, and automotive audio systems. In professional audio, it is ideal for mixing consoles, amplifiers, and digital audio workstations (DAWs). In consumer electronics, it enhances the performance of home theater systems, soundbars, and high-end audio receivers. Automotive applications include in-car entertainment systems, where its low distortion and high SNR ensure superior sound quality even in noisy environments.
Q & A
1. What is the gain range of the PGA4311UA/1K?
The gain range is from -95.5 dB to +31.5 dB in 0.5 dB steps.
2. What is the typical THD of this IC?
The typical THD is 0.0005%.
3. What type of control interface does it support?
It supports the SPI (Serial Peripheral Interface) for digital control.
4. What is the operating voltage range?
The operating voltage is ±5 V (dual supply).
5. Is it suitable for automotive applications?
Yes, it is suitable for automotive audio systems due to its robust performance and low distortion.
6. What package does the PGA4311UA/1K come in?
It is available in a TSSOP-28 package.
7. What is the typical power consumption?
The typical power consumption is 15 mW.
8. Can it be used in professional audio equipment?
Yes, it is ideal for professional audio applications such as mixing consoles and amplifiers.
9. What is the SNR of this IC?
The SNR is typically 120 dB.
10. Is it compatible with microcontrollers?
Yes, its SPI interface makes it compatible with most microcontrollers and digital systems.
