PGA2311 Volume Control: Alternative, Package and Pinout

The PGA2311 device is a high-performance, stereo audio volume control designed for professional and high-end consumer audio systems. 

The PGA2311 uses an internal high-performance operational amplifier to yield low noise and distortion. The PGA2311 also provides the capability to drive 660-Ω loads directly without buffering. 

The 3-wire serial control interface allows for connection to a wide variety of host controllers, in addition to support for daisy-chaining of multiple PGA2311 devices. 

The heart of the PGA2311 is a resistor network, an analog switch array, and a high-performance op amp stage. The switches are used to select taps in the resistor network that, in turn, determine the gain of the amplifier stage. 

Switch selections are programmed using a serial control port. The PGA2311 includes a zero crossing detection function that can provide for noise-free level transitions. 

The concept is to change gain settings on a zero crossing of the input signal, thus minimizing audible glitches .The zero crossing detection takes effect with a change in gain setting for a corresponding channel. 

The new gain setting will not be implemented until either positive slope zero crossing is detected or a time-out period of 16ms has elapsed. In the case of a time-out, the new gain setting takes effect with no attempt to minimize audible artifacts. This board features a fully independent signal and power ground .

Symbol

Footprint

3D Model

• Digitally-Controlled Analog Volume Control:

– Two Independent Audio Channels

– Serial Control Interface

– Zero Crossing Detection

– Mute Function

• 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 (U-Grade)

– 0.0002% THD+N at 1 kHz (A-Grade)

• Noise-Free Level Transitions

• Low Interchannel Crosstalk: −130 dBFS

• Power Supplies: ±5-V Analog, +5-V Digital

• Available in PDIP-16 and SOIC-16 Packages

• Pin- and Software-Compatible With the Crystal CS3310

Texas Instruments PGA2311UA/1K technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments PGA2311UA/1K.

• Used in Audio Amplifiers

• Used in Mixing Consoles

• Used in Multi-Track Recorders

• Used in Broadcast Studio Equipment

• Used in Musical Instruments

• Used in Effects Processors

• Used in A/V Receivers

• Used in Car Audio Systems

Texas Instruments (TI) is an American technology company headquartered in Dallas, Texas, which designs and manufactures semiconductors and various integrated circuits, and sells them to electronic designers and manufacturers worldwide. It is one of the top 10 semiconductor companies in global sales. The company focuses on the development of analog chips and embedded processors, which account for more than 80% of its revenue. TI also produces TI digital light processing technology and educational technology products, including calculators, microcontrollers and multi-core processors. As of 2016, the company has 45,000 patents worldwide.