TSH511CF STMicroelectronics, TSH511CF Datasheet - Page 21
TSH511CF
Manufacturer Part Number
TSH511CF
Description
IC RECEIVER DUAL FM 44-TQFP
Manufacturer
STMicroelectronics
Datasheet
1.TSH511CFT.pdf
(25 pages)
Specifications of TSH511CF
Frequency
2.3MHz and 2.8MHz
Sensitivity
-95dBm
Modulation Or Protocol
FM
Applications
Infrared Headsets, Infrared Hi-Fi Stereo Transmitters
Current - Receiving
15mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Voltage - Supply
2.3 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
For Use With
497-8516 - BLANK PCB W/ BOM FOR TSH511/12
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Memory Size
-
Data Rate - Maximum
-
Other names
497-2322
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
TSH511
8.5
Figure 29. Squelch schematics
The squelch section is driven by the receiver RX1 but controls both audio buffers.
Audio buffer sections
The audio signal from an FM demodulator enters into the 6dB/octave low-pass filter for de-
emphasis. 50µs and 75µs are standard de-emphasis values.
After the de-emphasis network, the potentiometer controls the volume.
The rail-to-rail output stage of each audio buffer is able to drive 20mW into 16
supply voltage. Under these conditions, the distortion is typically 0.3% before saturation.
The audio buffers can also drive the other usual impedances used in audio: 32
10k
The high input impedances of the audio buffers reduce the coupling capacitors to less than
0.1µF allowing space and cost saving.
Ω
(see the corresponding distortion curves).
General description
Ω
Ω
at 2.3V
, 600
Ω
and
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