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TDA7701 Datasheet

  • TDA7701

  • BATTERY OPERATED FULLY INTEGRATED FM TUNER

  • 4頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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TDA7701
BATTERY-OPERATED FULLY INTEGRATED FM TUNER
DATA BRIEF
1
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Main Features
SINGLE-CHIP FM TUNER FOR LOW-VOLTAGE/
LOW POWER APPLICATIONS
INTEGRATED LNA (WITH AGC) AND IMAGE
REJECTION MIXER
LOW-IF ARCHITECTURE WITH ON-CHIP
CHANNEL SELECTION FILTER
VCO WITH ON-CHIP VARACTOR
INTEGRATED TUNING PLL WITH AUTO
STATION SEARCH FUNCTION
ANALOG AND DIGITAL SIGNAL STRENGTH
INDICATION
FULLY INTEGRATED FM DEMODULATOR
AND ADJUSTMENT-FREE STEREO
DECODER
PROGRAMMABLE AUTOMATIC STEREO
BLEND AND SOFT MUTE
I
2
C/SPI-BUS CONTROLLED
LOW POWER CONSUMPTION
HIGH SENSITIVITY
HIGH AUDIO QUALITY
Figure 1. Package
TFBGA40
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Table 1. Order Codes
Part Number
TDA7701
Package
TFBGA40
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decoding, I
2
C/SPI-controlled tuning with station
detection.
Its low-IF architecture highly integrated RF/IF sec-
tions include a low-noise preamplifier with Auto-
matic Gain Control, an image rejection mixer and
on-chip high-Q channel selection filters that bring
to a minimum the external component count and
PCB complexity while guaranteeing good selectiv-
ity and image-rejection performances Thanks to its
on-chip varactor, the tuning-PLL controlled VCO
needs just one external inductor for low phase-
noise oscillation.
FM demodulation is performed by means of a fully
integrated circuit that eliminates the need for an
external LC tank while maximizing linearity.
The FM stereo signal is decoded through a fullyin-
tegrated, adjustment-free dedicated PLL; auto-
matic signal-dependent stereo blend and soft-
mute functions are provided.
A single external reference frequency is needed
for IC operation, and can be selected among those
commonly used in GSM applications (13/19.2/26/
38.4 MHz + 32768Hz real-time/sleep clock).
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2
Description
TDA7701 is a single-chip FM Tuner specifically
designed in mixed Bipolar-CMOS technology for
low-voltage/low-power applications, where the
minimization of external component count and
PCB size and complexity are mandatory: typical
examples are mobile phones and portable multi-
media equipment.
Housed in a small TFBGA40 package (5x5 mm), it
features the full FM signal processing chain from
antenna to stereo audio output: RF front-end pro-
cessing, IF processing, demodulation and stereo
February 2005
This is preliminary information on a new product now in development. Details are subject to change without notice.
Rev. 1
1/4

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