Overview
The PGA2310UA, produced by Texas Instruments, is a high-performance stereo audio volume control designed for professional and high-end consumer audio systems. It operates from ±15-V analog power supplies, enabling it to process input signals with large voltage swings and preserve the dynamic range in the overall signal path. The device utilizes high-performance operational amplifier stages, resulting in low noise and distortion, and can drive 600-Ω loads directly without buffering. It features a three-wire serial control interface, supporting connection to various host controllers and daisy-chaining of multiple PGA2310 devices.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Step Size | 0.5 | dB | |||
| Gain Error | Gain Setting = 31.5 dB | ±0.05 | dB | ||
| Gain Matching | ±0.05 | dB | |||
| Input Resistance | 10 | kΩ | |||
| Input Capacitance | 7 | pF | |||
| THD+N | VIN = 10 VPP, f = 1 kHz | 0.0004% | 0.001% | % | |
| Dynamic Range | VIN = AGND, Gain = 0 dB | 116 | 120 | dB | |
| Operating Voltage (VA+) | 4.5 | 15 | 15.5 | V | |
| Operating Voltage (VA-) | -4.5 | -15 | -15.5 | V | |
| Operating Voltage (VD+) | 4.5 | 5 | 5.5 | V | |
| Quiescent Current (IA+) | VA+ = 15 V | 7.5 | 10 | mA | |
| Quiescent Current (IA-) | VA- = -15 V | 7.7 | 10 | mA |
Key Features
- Digitally-Controlled Analog Volume Control with two independent audio channels
- Serial Control Interface for connection to various host controllers and support for daisy-chaining multiple devices
- Zero Crossing Detection for noise-free level transitions
- Mute Function available in the overall signal path
- Wide Gain and Attenuation Range: 31.5 dB to -95.5 dB with 0.5-dB steps
- Low Noise and Distortion: 120-dB dynamic range, 0.0004% THD+N at 1 kHz
- Low Interchannel Crosstalk: -126 dBFS
- Power Supplies: 15-V Analog, 5-V Digital
- Available in DIP-16 and SOIC-16 Packages
- Pin and Software Compatible With the PGA2311 and Cirrus Logic CS3310™
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 PGA2310UA used for?
The PGA2310UA is a high-performance stereo audio volume control used in professional and high-end consumer audio systems.
- What is the operating voltage range for the PGA2310UA?
The PGA2310UA operates from ±15-V analog power supplies and a 5-V digital power supply.
- What is the gain and attenuation range of the PGA2310UA?
The gain and attenuation range is from 31.5 dB to -95.5 dB with 0.5-dB steps.
- What is the dynamic range of the PGA2310UA?
The dynamic range is 120 dB.
- What is the THD+N at 1 kHz for the PGA2310UA?
The THD+N at 1 kHz is 0.0004%.
- What is the interchannel crosstalk of the PGA2310UA?
The interchannel crosstalk is -126 dBFS.
- Does the PGA2310UA support daisy-chaining?
Yes, the PGA2310UA supports daisy-chaining of multiple devices through its serial control interface.
- What are the package options for the PGA2310UA?
The PGA2310UA is available in DIP-16 and SOIC-16 packages.
- Is the PGA2310UA compatible with other devices?
Yes, it is pin and software compatible with the PGA2311 and Cirrus Logic CS3310™.
- What are some typical applications of the PGA2310UA?
Typical applications include audio amplifiers, mixing consoles, multi-track recorders, broadcast studio equipment, musical instruments, effects processors, A/V receivers, and car audio systems.
