Overview
The PGA2320IDWRG4, produced by Texas Instruments, is a high-performance stereo audio volume control designed for professional and high-end consumer audio systems. This component operates from ±15V analog power supplies, enabling it to process input signals with large voltage swings, thereby preserving the dynamic range available in the overall signal path. The PGA2320 utilizes high-performance operational amplifier stages to achieve low noise and distortion, and it can drive 600Ω loads directly without buffering. The device features a three-wire serial control interface, supporting connection to various host controllers and daisy-chaining of multiple PGA2320 devices.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (VA+) | +4.5 | +15 | +15.5 | V |
| Supply Voltage (VA-) | -4.5 | -15 | -15.5 | V |
| Supply Voltage (VD+) | +4.5 | +5 | +5.5 | V |
| Operating Temperature Range | -40 | +85 | °C | |
| Storage Temperature Range | -65 | +150 | °C | |
| Junction Temperature | +150 | °C | ||
| Step Size | 0.5 | dB | ||
| Gain Range | +31.5 | -95.5 | dB | |
| THD+N at 1kHz | 0.0003 | 0.001 | % | |
| Dynamic Range | 115 | 120 | dB | |
| Interchannel Crosstalk | -126 | dBFS |
Key Features
- Digitally-controlled analog volume control with two independent audio channels.
- Serial control interface supporting daisy-chaining of multiple devices.
- Zero crossing detection for noise-free level transitions.
- Mute function controllable via the MUTE input or gain byte settings.
- Low noise and distortion: 120dB dynamic range, 0.0003% THD+N at 1kHz.
- Low interchannel crosstalk: -126dBFS.
- Ability to drive 600Ω loads directly without buffering.
- Operating temperature range: -40°C to +85°C.
Applications
- Audio amplifiers
- Mixing consoles
- Multi-track recorders
- Broadcast studio equipment
- Musical instruments
- Effects processors
- A/V receivers
- Car audio systems
Q & A
- What is the PGA2320IDWRG4 used for?
The PGA2320IDWRG4 is a high-performance stereo audio volume control used in professional and high-end consumer audio systems.
- What are the supply voltage requirements for the PGA2320IDWRG4?
The PGA2320IDWRG4 requires ±15V analog power supplies and a +5V digital power supply.
- What is the gain range of the PGA2320IDWRG4?
The gain range is from +31.5dB to -95.5dB with 0.5dB steps.
- How does the zero crossing detection function work?
The zero crossing detection function changes gain settings on a zero crossing of the input signal to minimize audible glitches. It is enabled or disabled using the ZCEN input.
- Can the PGA2320IDWRG4 drive 600Ω loads directly?
- What is the dynamic range of the PGA2320IDWRG4?
The dynamic range is 120dB.
- How is the mute function controlled?
The mute function can be controlled via the MUTE input or by setting the gain byte value for one or both channels to 00HEX.
- What is the interchannel crosstalk of the PGA2320IDWRG4?
The interchannel crosstalk is -126dBFS.
- Can multiple PGA2320IDWRG4 devices be daisy-chained?
- What is the operating temperature range of the PGA2320IDWRG4?
The operating temperature range is -40°C to +85°C.
