参数资料
型号: TSH512CF
厂商: STMICROELECTRONICS
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP44
封装: 10 X 10 MM, ROHS COMPLIANT, TQFP-44
文件页数: 16/31页
文件大小: 1350K
代理商: TSH512CF
TSH512
General description
Doc ID 8120 Rev 7
23/31
The monostable holds the TSH512 in transmit mode during a delay fixed by the value of
CTRIG connected to pin 29.
Note that the VOX function is activated when the audio signal enters the first transmitter
TX1.
When the application needs a permanent transmission, it is possible to inhibit the VOX
function, by removing the Ctrig capacitor and connecting pin 29 to ground.
As soon as the TSH512 is powered-on, the internal reset circuitry sets the VOX-MUTE to
high state to enable transmission. The transmission remains during the monostable timing
and continues if an audio signal triggers the monostable.
Figure 31.
VOX state at power-on
VOX
DELAY
1.4V
5
μA
------------
C
trig
=
time
VOX -MUTE
POWER SUPPLY
on
off
VOX Delay
(Ctrig)
0
1
high state if retriggered by audio
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