TSH511C View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TSH511C' PDF : 18 Pages View PDF
TSH511
Hi-fi stereo/mono infrared receiver
and stereo sub-carrier demodulator
Features
■ Supply voltage: 2.3V to 5.5V
■ Carriers frequency range: 0.4MHz to 11MHz
■ Two FM receivers for stereo
■ Integrated audio buffers
■ Audio outputs: 20mW into 16 ohms
■ High sensitivity: 4µV @12dB SINAD
■ Flexibility: access pins for each section
■ Receiver 2 Standby for mono operation
Applications
■ Infrared hi-fi stereo receiver
■ Infrared multimedia headsets
■ Stereo sub-carrier demodulator
■ FM IF receiver systems
■ Power line carrier intercoms
Description
The TSH511 is a 0.4 to 11MHz dual FM receiver.
This circuit offers the functions needed for a
highly sensitive infrared hi-fi stereo receiver.
Featuring high input sensitivity and high input
dynamic range, each receiver integrates an RF
front-end LNA, an intermediate amplifier with 2
external filters, a voltage limiter, a quadrature FM
demodulator, and finally an audio buffer.
The integrated audio buffers are able to directly
drive a 16-ohm headphone with 20mW. A squelch
circuit mutes both audio amplifiers.
Access pins to each section makes the TSH511
suited for a wide field of applications.
For mono applications, the standby pin enables
one receiver only, reducing the supply current.
F
TQFP44
10 x 10 mm
Pin connections
(top view)
44 43 42 41 40 39 38 37 36 35 34
1
2
3
amp.
4
5
LNA
6
7
8
9
amp.
10
11
33
32
Standby
limiter
FM demodulator
31
RX2
30
29
TSH511 Audio
28
buffers
27
RX1
limiter
Vref
FM demodulator
26
25
SQUELCH
24
23
12 13 14 15 16 17 18 19 20 21 22
The TSH511 forms a chipset with the dual
transmitter TSH512.
November 2007
Rev 5
1/25
www.st.com
25
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