TDA7514 datasheet(1/74 Pages) STMICROELECTRONICS

部件名	TDA7514

功能描述	SINGLE-CHIP FM/AM TUNER WITH STEREO DECODER AND AUDIO PROCESSOR

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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TDA7514

June 2005

1

FEATURES

■ AM/FM WORLD TUNER FOR CAR-RADIO

■ INTEGRATED IMAGE REJECTION FM MIXER

■ INTEGRATED TUNING PLL

■ VARIABLE-BANDWITH FM IF FILTER (ISS)

■ FULLY INTEGRATED FM STEREO

DECODER

■ FULLY INTEGRATED FM/AM NOISE

BLANKER

■ HIGHLY INTEGRATED AUDIO PROCESSOR

2

DESCRIPTION

The TDA7514 is a device for car-radio applications

that combines full RF front-end functions with ad-

vanced audio-processing capabilities.

As far as FM and AM functions are concerned, the

TDA7514 features front-end processing, including

the digital tuning PLL. IF processing with demodu-

lation and variable-bandwidth IF filtering (ISS),

stop station and quality detection functions, FM

stereo decoding by means of a fully integrated ad-

justment-free dedicated PLL and, finally, AM and

FM noise blanking (AM noise blanking comprises

one IF NB as well as an audio NB).

The FM stereo decoder and the noise blanking

functions are realised entirely without external

components. The FM front-end circuit features an

image-rejection mixer that allows the simplification

of the external preselection filter, and a very low

noise level that allows getting rid of the external

preamplifier with no loss in sensitivity. A 6 bit on-

board ADC makes a digitised version of the Sme-

ter available to the

µP via I2Cbus.

The audio processor section comprises input se-

lectors for one stereo single-ended source, one

stereo quasi-differential source and a mono differ-

ential source. Volume, loudness, tone (bass and

treble), balance and fading controls are available

with completely pop-free operation to drive four

output channels. An additional input independent-

ly mixable on each of the four outputs is provided

for chime. A soft mute function and an RDS mute

function are included to handle source change as

well as RDS AF search without abrupt changes in

the audio level.

Most of the parameters in the front-end section are

I2Cbus-driven and therefore under the control of

the car-radio maker. The I2Cbus allows further-

more the user to realise the full electric alignment

of all the external coils.

SINGLE-CHIP FM/AM TUNER WITH STEREO DECODER

AND AUDIO PROCESSOR

Rev. 1

Figure 1. Package

Table 1. Order Codes

E- prefix indicates lead free package

Part Number

Package

E-TDA7514

TQFP80

E-TDA7514TR

TQFP80 in Tape & Reel

TQFP80

类似零件编号 - TDA7514

制造商	部件名	数据表	功能描述
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	TDA7513T	520Kb / 59P	SINGLE-CHIP FM/AM TUNER WITH STEREO DECODER AND AUDIO PROCESSOR Jun-2004

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