SA1469PH Datasheet, PDF (4/11 Pages) Silan Microelectronics Joint-stock – 4-CH BTL DRIVER FOR CD PLAYER WITH 3.3V OUTPUT VOLTAGE

SA1469PH
(Continued)
Pin No.
Symbol
I/O
9
IN2B
I
10
IN2A
I
11
OUT2B
O
12
OUT2A
O
13
GND
--
14
OPOUT
O
15
OPIN (-)
I
16
OPIN (+)
I
17
OUT3A
O
18
OUT3B
O
19
IN3A
I
20
IN3B
I
21
VCC
--
22
VCC
--
23
VREF
I
24
IN4B
I
25
IN4A
I
26
OUT4B
O
27
OUT4A
O
28
GND
--
FUNCTIONAL DESCRIPTION
Drive input
Drive input
Drive output
Drive output
Ground
Opamp output
Opamp input (-)
Opamp input (+)
Drive output
Drive output
Drive input
Drive input
Supply voltage
Supply voltage
2.5V bias voltage
Drive input
Drive input
Drive output
Drive output
Ground
Description
1. MUTE
Function
Thermal shutdown
External muting
Mute
○
○
Operation conditions
T≥175°C
V(mute)≤ 1.4V or open
Output Driver
Bias
7
1) The circuit is muted during thermal shutdown and during the mute-on state.In each case, only the drivers are
muted.
2) During mute, the output pins remain at the internal bias voltage, roughly (Vcc-Vf)/2.
3) When the mute pin # 7 is open or the voltage of the mute pin # 7 is below 0.5V, the mute circuit is activated
so that the output circuit will be muted..
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.4 2008.07.23
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