TSH511C STMicroelectronics, TSH511C Datasheet

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TSH511C

Manufacturer Part Number
TSH511C
Description
HiFi stereo/mono infrared receiver Stereo sub-carrier demodulator
Manufacturer
STMicroelectronics
Datasheet

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TSH511C
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TSH511CF
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TSH511CFT
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DESCRIPTION
The TSH511 is a 0.4 to 11 MHz dual FM receiver.
This circuit offers the functions needed for a highly
sensitive infrared HiFi STEREO receiver.
Featuring high input sensitivity and high input dy-
namic range, each receiver integrates a RF
front-end LNA, an intermediate amplifier with 2 ex-
ternal filters, a voltage limiter, a quadrature FM de-
modulator, and finally an audio buffer.
The integrated audio buffers are able to drive di-
rectly a 16 ohms 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 en-
ables one receiver only, reducing the supply cur-
rent.
The TSH511 forms a chipset with the dual trans-
mitter TSH512.
APPLICATIONS
ORDER CODE
December 2002
TSH511CF
TSH511CFT
Part Number
Supply voltage: 2.3V to 5.5V
Carriers frequency range: 0.4 to 11 MHz
Two FM receivers for stereo
Integrated audio buffers
Audio outputs: 20 mW into 16 ohms
High sensitivity: 4µV @12dB SINAD
Flexibility: access pins for each section
Receiver 2 Standby for mono operation
Infrared HiFi stereo receiver
Infrared Multimedia Headsets
Stereo sub-carrier demodulator
FM IF receiver systems
Power Line Carrier Intercoms
Temperature
-40°C to
-40°C to
Range
+85°C
+85°C
Package
TQFP44
TQFP44
Conditionning
Tape & reel
Tray
TSH511C
TSH511C
Marking
HiFi stereo/mono infrared receiver
Stereo sub-carrier demodulator
PACKAGE
PIN CONNECTION (top view)
10
10
11
11
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
amp.
amp.
amp.
amp.
44
44
12
12
LNA
LNA
43
43
13
13
42
42
14
14
limiter
limiter
limiter
limiter
41
41
15
15
RX2
RX2
RX1
RX1
TSH511
TSH511
10 x 10 mm
40
40
16
16
TQFP44
FM demodulator
FM demodulator
FM demodulator
FM demodulator
39
39
17
17
F
38
38
18
18
37
37
19
19
TSH511
TSH511
Audio
Audio
buffers
buffers
36
36
Vref
Vref
20
20
Standby
Standby
35
35
21
21
SQUELCH
SQUELCH
34
34
22
22
33
33
32
32
31
31
30
30
29
29
28
28
27
27
26
26
25
25
24
24
23
23
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TSH511C Summary of contents

Page 1

... Marking Tray TSH511C Tape & reel TSH511C TSH511 TSH511 F TQFP44 Standby Standby FM demodulator FM demodulator ...

Page 2

TSH511 ABSOLUTE MAXIMUM RATINGS Symbol 1) Vcc Supply voltage Toper Operating free air temperature range Tstg Storage temperature Tj Maximum junction temperature Rthjc Thermal resistance junction to case HBM: Human Body Model ESD CDM: Charged Device Model except for pin ...

Page 3

PIN DESCRIPTION Pin Pin name related to 1 GND - 2 AMP-IN2 RX2 3 VCC - 4 LNA-OUT2 RX2 5 VCC - 6 LNA-IN RX1 & RX2 7 GND - 8 LNA-OUT1 RX1 9 VCC - 10 AMP-IN1 RX1 11 ...

Page 4

TSH511 TYPICAL SCHEMATIC Stereo infrared receiver 4/18 ...

Page 5

INFRARED STEREO HEADPHONE APPLICATION The right side of the figure shows the block-diagram of an infrared stereo receiver using the TSH511. The sensitive LNA directly connected to the photodiode does not require an external pre-amplifier. After filter- ing, the amplified ...

Page 6

TSH511 MULTIMEDIA APPLICATION: HEADSET SIDE The TSH511 receives the HiFi stereo sound from the computer through 2.3 and 2.8 MHz stereo infrared carriers. The access pins to the RF amplifiers allow the use of a 1.7 MHz reject filter to ...

Page 7

ELECTRICAL CHARACTERISTICS Vcc = 2.7V, Tamb = 25°C, faudio = 1 kHz, fcarrier = 2.8 MHz, frequency deviation = +/-75 kHz (unless otherwise specified) Symbol Parameter Overall Circuit (refering to typical application schematic, without reject filters) Current consumption, I CC_OX ...

Page 8

TSH511 Symbol Parameter Amplifier (AMP) Section G Amplifier Voltage Gain AMP Input impedance defined as Z AMP_IN R in parallel with C AMP_IN Z Output impedance AMP_OUT P 1dB compression point 1dBAMP BW -3dB AMP Bandwidth AMP Limitor (LIM) Section ...

Page 9

Symbol Parameter Audio Buffers Z Input Impedance OD-IN BW -1dB bandwith 1dB P Output power OUT_OD THD Distortion in Line Driver mode OD THD Distortion in Power Amplifier mode OD Crosstalk: isolation between the two V ISOL Audio Buffers Standby ...

Page 10

TSH511 OVERALL CIRCUIT Supply current vs. Supply voltage 20 RX1+RX2+Buffers 18 16 RX1+Buffers RX1+ (RX1 Buffer (V) CC S/N vs. 2.8 MHz Input Level 60 50 PSOPH ...

Page 11

AUDIO BUFFERS Output THD+N vs. Output Power ( (mW) OUT-BUF Output THD+N vs. Output Power ( ...

Page 12

TSH511 Output THD+N vs. Output Voltage (RL = 10k ) 2. kHz kHz 5.5V CC 0.1 0.1 V ...

Page 13

Output Power vs. Temperature -40 - (°C) AMB RMS TSH511 13/18 ...

Page 14

TSH511 GENERAL DESCRIPTION The TSH511 MHz dual FM analogue receiver. The incoming signal is amplified with Low Noise Amplifier (LNA section). The good noise performance of the LNA allows the photodiode for ...

Page 15

The LNA output is directly LNA-OUT1 and LNA-OUT2 pins in parallel (pin 8 and 4 respectively). As the LNA minimum imped- ance load the load impedance on each pin LNA-OUT1 or LNA-OUT2 must ...

Page 16

TSH511 The comparator and the C MUTE ate the fade-in and fade-out control ramps for the audio buffers. The Squelch has been designed with particular attention to avoid audio pop-noise. Figure 6 : Squelch schematic The squelch section is driven ...

Page 17

APPLICATION SCHEMATIC The infrared carriers are detected by the photodiode and the signal is directly amplified by the TSH511. Optional reject filters can be added in each channel to improve crosstalk performances. Each receiver has a standard bandpass filter (filters ...

Page 18

... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied ...

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