Overview
The PGA2310UA/1K, produced by Texas Instruments, is a high-performance, stereo audio volume control designed for professional and high-end consumer audio systems. This device is capable of operating with analog power supplies ranging from ±4.5 V to ±15.5 V and a digital power supply ranging from 4.5 V to 5.5 V. It features a serial control interface, zero crossing detection, and a mute function, making it ideal for applications requiring precise and noise-free volume control.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| 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 | |
| Gain Range | 31.5 dB | -95.5 dB | dB | ||
| Step Size | 0.5 | dB | |||
| THD+N at 1 kHz | VIN = 10 VPP, f = 1 kHz | 0.0004% | 0.001% | % | |
| Dynamic Range | VIN = AGND, Gain = 0 dB | 116 | 120 | dB | |
| Input Resistance | 10 | kΩ | |||
| Input Capacitance | 7 | pF | |||
| Quiescent Current (IA+) | VA+ = 15 V | 7.5 | 10 | mA | |
| Quiescent Current (IA-) | VA- = -15 V | 7.7 | 10 | mA | |
| Quiescent Current (ID+) | VD+ = 5 V | 0.8 | 1.5 | mA | |
| Temperature Range | -40 | 85 | °C |
Key Features
- Digitally-Controlled Analog Volume Control with two independent audio channels.
- Serial control interface for programming gain settings.
- Zero crossing detection for noise-free level transitions.
- Mute function that can be activated via the MUTE input or by setting the gain byte value to 00HEX.
- Wide gain and attenuation range: 31.5 dB to -95.5 dB with 0.5-dB steps.
- Low noise and distortion: 0.0004% THD+N at 1 kHz.
- Low interchannel crosstalk: -126 dBFS.
- Ability to drive 600-Ω loads directly without buffering.
- 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 operating voltage range for the PGA2310UA/1K?
The PGA2310UA/1K operates with analog power supplies ranging from ±4.5 V to ±15.5 V and a digital power supply ranging from 4.5 V to 5.5 V.
- What is the gain range of the PGA2310UA/1K?
The gain range is from 31.5 dB to -95.5 dB with 0.5-dB 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 pin.
- What is the THD+N at 1 kHz for the PGA2310UA/1K?
The THD+N at 1 kHz is 0.0004%.
- What is the dynamic range of the PGA2310UA/1K?
The dynamic range is 120 dB.
- Can the PGA2310UA/1K drive 600-Ω loads directly?
Yes, the PGA2310UA/1K can drive 600-Ω loads directly without buffering.
- What packages is the PGA2310UA/1K available in?
The PGA2310UA/1K is available in DIP-16 and SOIC-16 packages.
- Is the PGA2310UA/1K compatible with other devices?
Yes, it is pin and software compatible with the PGA2311 and Cirrus Logic CS3310.
- What is the temperature range for the PGA2310UA/1K?
The specified temperature range is -40°C to 85°C.
- How does the mute function work on the PGA2310UA/1K?
The mute function can be activated via the MUTE input pin or by setting the gain byte value to 00HEX. Muting is accomplished by switching the input multiplexer to analog ground.
