TSH511CF datasheet(1/25 Pages) STMICROELECTRONICS

Part #	TSH511CF

Description	Hi-fi stereo/mono infrared receiver and stereo sub-carrier demodulator

PDF	25 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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1 / 25 page

November 2007

Rev 5

1/25

25

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.

The TSH511 forms a chipset with the dual

transmitter TSH512.

F

TQFP44

10 x 10 mm

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TSH511

Audio

buffers

Standby

RX1

RX2

SQUELCH

Vref

LNA

amp.

limiter

FM demodulator

limiter

amp.

FM demodulator

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1

TSH511

Audio

buffers

Standby

RX1

RX2

SQUELCH

Vref

LNA

amp.

limiter

FM demodulator

limiter

amp.

FM demodulator

Pin connections

(top view)

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