TSH511(2002) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

TSH511
(Rev.:2002)

HiFi stereo/mono infrared receiver Stereo sub-carrier demodulator

STMicroelectronics 

TSH511

Symbol

Parameter

Test condition

Min Typ Max Unit

Amplifier (AMP) Section

GAMP

ZAMP_IN

ZAMP_OUT

Amplifier Voltage Gain

Input impedance defined as

RAMP_IN in parallel with CAMP_IN

Output impedance

P1dBAMP 1dB compression point

BWAMP -3dB AMP Bandwidth

ZL=2 kΩ, fcarrier=10 MHz 16

20

RAMP_IN

10

CAMP_IN

2

350

ZL = 2 kΩ

560

ZL = 2 kΩ,

fcarrier=10 MHz

220 380

ZL = 2 kΩ

11

dB

kΩ

pF

Ω

mVRMS

MHz

Limitor (LIM) Section

GLIM

ZLIM_IN

VLIM_OUT

Voltage gain

Input impedance defined as

RLIM_IN in parallel with CLIM_IN

Output Voltage

ZL=15kΩ tied to GND

50

54

60

dB

RLIM_IN

15

kΩ

CLIM_IN

2

pF

ZL = 15 kΩ tied to GND

170

mVpp

FM Demodulator Section

VDEM Output voltage

ZDEM_OUT Output impedance

+-75 kHz FM deviation

typical application schematic 700

800

900 mVRMS

ZL = 4 kΩ

100

Ω

Squelch Section

RX1 and RX2 audio buff-

ATT

Audio attenuation on each receiver

when audio buffers are muted.

ers muted

55

ZL = 16 Ω on both audio

65

buffers

ZN_IN Noise Amplifier Input impedance

2

from MUTED to

UNMUTED state,

VN_TH Comparator threshold

RMUTE = 22 kΩ,

9

fIN = 100 kHz

VN_HYS Comparator hysteresis

RMUTE = 22 kΩ,

fIN = 100 kHz

1

Current sinked on pin 25 to discharge

IMUTE_SINK

CMUTE capacitor: ramp generator con-

trolling the attenuation from ON to OFF

Voltage on pin 25 = 1.7V

24

states of audio buffers.

Current sourced on pin 25 to charge

IMUTE_SOU CMUTE capacitor: ramp generator con-

RCE trolling the attenuation from OFF to ON

Voltage on pin 25 = 1.7V

14

states of audio buffers.

dB

kΩ

mVRMS

mVRMS

µA

µA

8/18

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