PGA4311K Burr-Brown Corporation, PGA4311K Datasheet - Page 7

• Manufacturer Part Number: PGA4311K
• Description: 4 CHANNEL AUDIO VOLUME CONTROL
• Manufacturer: Burr-Brown Corporation

Figure 1. PGA4311 Block Diagram.
If during normal operation the power supply voltage
drops below 3.2V, the circuit enters a hardware MUTE
state. A power-up sequence will be initiated if the
power-supply voltage returns to greater than 3.2V.
ANALOG INPUTS AND OUTPUTS
The PGA4311 includes four independent channels.
Each channel has a corresponding input and output pin.
The input and output pins are unbalanced, and refer-
enced to analog ground.
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The input and output pins may swing within 1.25V of the
analog power supplies, V
and V
range is 7.5Vp-p.
For optimal performance, it is best to drive the PGA4311
with a low source impedance. A source impedance of
600
to 2k will cause minimal degradation of THD+N. Please
refer to the “THD+N vs Source Impedance” plot in the
Typical Characteristics section of the datasheet.
A
or less is recommended. Source impedances up
– = –5V, the maximum input or output voltage
SBOS230A – MARCH 2002 – REVISED JUNE 2002
A
+ and V
A
–. Given V
PGA4311
A
+ = +5V
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