TSH512 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TSH512' PDF : 32 Pages View PDF
TSH512
Figure 24. Headset-side block diagram
Application information
TSH511 & 512 supply:
2.3 to 5.5V, 25 mA
Voice transmitted to the PC
HiFi stereo from the PC:
2 x 20 mW /16 Ω
TSH511
Audio
amp2
TSH512
LNA + ALC
MIC. BIAS
MIC. BIAS
LNA + ALC
TX2
VOX
TX1
buffer2
Vcc
SBY
Vcc
LED
buffer1
1.7 MHz filter
Band-pass
Audio
amp1
1.7 MHz
reject
f ilter
2.3 MHz
Band-pass
f ilter
RX2
LNA
RX1
f ilter
1.7 MHz
reject
f ilter
2.8 MHz
Band-pass
Microphone Tx:
1.7 MHz
carrier
photodiode
Stereo Rx:
2.3 & 2.8 MHz
4.3.2
Computer side
In multimedia applications, the TSH512 transmits the hi-fi stereo from the PC to the
headset.
Figure 25. Computer-side block diagram
TSH511 & 512 supply:
2.3 to 5.5V, 24 mA
mono Rx:
1.7 MHz
HiFi stereo
HiFi stereo Tx:
2.3 & 2.8 MHz
buffer2
TX2
SBY
LED
VOX
buffer1
TX1
TSH512
LNA + ALC
LNA + ALC
Voice from the headset microphone
photodiode
LNA
TSH511
Audio
amp2
RX2
Audio
amp1
RX1
f ilter
1.7 MHz
Band-pass
Vcc
Doc ID 8120 Rev 7
17/31
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