參數資料
型號: TB2173FTG
元件分類: 音頻控制
英文描述: 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PQCC44
封裝: 6 X 6 MM, 0.40 MM PITCH, PLASTIC, VQON-44
文件頁數: 17/19頁
文件大?。?/td> 252K
代理商: TB2173FTG
TB2173FTG
2006-04-19
7
Pin No.
and Name
Function
Internal Equivalent Circuit
Pin
Voltage
(V)
24 IN1B
25 IN1A
Input pin 1
Input pin with GV = 8dB
0.6
26 IN2B
31 IN2A
Input pin 2
The input signal is supplied to
the power amplifier through
the electronic volume circuit
and preamplifier.
0
27
VOL
OUTB
30
VOL
OUTA
Volume output
IN2 electronic volume output
0
32 GND
Logic ground
0
35 PW SW
Power switch
IC ON/OFF switch.
The switch does not,
however, control the
electronic volume circuit.
When controlling PW SW
using a port, specify "1" in a
command.
In that case, the IC operates
as follows according to the
port state:
High: IC ON
Low: IC OFF
When controlling PW SW
using a command, drive the
port high.
36 RESET
Command reset
This pin resets the bus data.
High: No reset
Low: Reset
2.1
40 VDD
Logic power supply
2.1
to
ADD OUT
25
VCC1
10 k
1
k
BIAS OUT
20
k
BIAS OUT
2 k
35
to
BUS
31
30
20
k
40
36
50
k
200
VDD
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