FUNCTIONAL BLOCK DIAGRAM
Input
Buffer
SC
300K
SLOS562 – AUGUST 2008 ................................................................................................................................................................................................ www.ti.com
OPERATING CHARACTERISTICS (continued)
TA = 25°C, RL = 8 (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
RI
Input impedance
AV = 2 V/V
30.2
k
Start-up time from shutdown
VDD = 3.6 V
3.2
ms
Short circuit detection
VDD = 3.6 V
1.7
A
threshold
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
YZF
IN–
C1
I
Negative differential audio input
IN+
A1
I
Positive differential audio input
VO-
A3
O
Negative BTL audio output
VO+
C3
O
Positive BTL audio output
Analog ground terminal. Must be connected to same potential as PGND using a direct connection
GND
A2
I
to a single point ground.
High-current Analog ground terminal. Must be connected to same potential as GND using a direct
PGND
B3
connection to a single point ground.
Power supply terminal. Must be connected to same power supply as PVDD using a direct
VDD
B1
I
connection. Voltage must be within values listed in Recommended Operating Conditions table.
High-current Power supply terminal. Must be connected to same power supply as VDD using a
PVDD
B2
I
direct connection. Voltage must be within values listed in Recommended Operating Conditions
table.
SHUTDOWN
C2
I
Shutdown terminal. When terminal is low the device is put into Shutdown mode.
4
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