Sharp LC-40LS340E Service Manual page 23

• Robust Pin-to-Pin Short Circuit Protection and Thermal Protection with Auto Recovery
Option
• Excellent THD+N / Pop-Free Performance
• Four Selectable, Fixed Gain Settings
• Differential Inputs
c. Absolute Ratings
d. Recommended Operating Conditions
7
e. Pin Functions
PIN
Number
NAME
SD
FAULT
LINP
LINN
GAIN0
GAIN1
AVCC
AGND
GVDD
PLIMIT
RINN
RINP
.
I/O/P
Pin
Shutdown logic input for audio amp (LOW = outputs Hi-Z, HIGH = outputs
1 I
enabled). TTL logic levels with compliance to AVCC.
Open drain output used to display short circuit or dc detect fault status. Voltage
2 O
compliant to AVCC. Short circuit faults can be set to auto-recovery by connecting
FAULT pin to SD pin. Otherwise, both short circuit faults and dc detect faults must
be reset by cycling PVCC.
3 I
Positive audio input for left channel. Biased at 3V.
4 I Negative audio input for left channel. Biased at 3V.
Gain select least significant bit. TTL logic levels with compliance to AVCC.
5 I
6 I
Gain select most significant bit. TTL logic levels with compliance to AVCC.
Analog supply
7 P
8 Analog signal ground. Connect to the thermal pad.
High-side FET gate drive supply. Nominal voltage is 7V. Also should be used as
9 O
supply for PLIMIT function
Power limit level adjust. Connect a resistor divider from GVDD to GND to set
10 I
power limit. Connect directly to GVDD for no power limit.
11 I
Negative audio input for right channel. Biased at 3V.
12 I Positive audio input for right channel. Biased at 3V.
DESCRIPTION
23
LC-40LS340