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PDF TDA7514 Data sheet ( Hoja de datos )
| Número de pieza | TDA7514 | |
| Descripción | SINGLE-CHIP FM/AM TUNER | |
| Fabricantes | STMicroelectronics | |
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TDA7514
SINGLE-CHIP FM/AM TUNER WITH STEREO DECODER
AND AUDIO PROCESSOR
1 FEATURES
■ AM/FM WORLD TUNER FOR CAR-RADIO
■ INTEGRATED IMAGE REJECTION FM MIXER
■ INTEGRATED TUNING PLL
■ VARIABLE-BANDWITH FM IF FILTER (ISS)
www.Dat■aShFeUetL4LUY.coImNTEGRATED 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-
Figure 1. Package
TQFP80
Table 1. Order Codes
Part Number
Package
E-TDA7514
TQFP80
E-TDA7514TR
TQFP80 in Tape & Reel
E- prefix indicates lead free package
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.
June 2005
Rev. 1
1/74
1 page  
TDA7514
3 ELECTRICAL CHARACTERISTCS
3.1 FM
(Vcc = 8.5V; Tamb= 25°C; Vant,in= 60dBµload; fc=98.1MHz; fdev = 40kHz; fmod=1KHz; IF1amp1=25dB;
IF1amp2=15dB; Filter @TUNEROUT:IEC_TUNER+Deemphasis=50µs, unless otherwise specified)
Table 3.
Symbol
Parameter
Test Condition
Min Typ Max Unit
General (measured at audioprocessor output with de-emphasis and high cut active, ISS set to 80 KHz BW)
US Usable sensitivity
S/N=40dB
0 dBµVload
SNR
Signal to Noise ratio
65 dB
LS
www.DataSheetT4HU.Dcom
Limiting Sensitivity
Total Harmonic Distortion
-3dB_point, SoftMute Off
fdev = 40kHz
-2.5
0.26
dBµVload
%
fdev = 75kHz
0.36 %
Vout
ISN
IFCS
Icctun
Output Level
@TUNEROUT
Interstation Noise
Delta Vout@RF OFF, Soft
Mute OFF
IF Counter Sensitivity
DC Supply Current@TUNVCC
243 mVrms
-8.5 dB
0 dBµVload
80 mA
Iccmix1
DC Supply Current@IFT1
5 mA
Iccif1
DC Supply Current@IF1VCC
10 mA
Iccosc
DC Supply Current@OSCVCC
10 mA
Iccpll
DC Supply Current@PLLVCC
3 mA
Iccdig
DC Supply Current@DIGVCC
7 mA
IQ Mixer 1
RIN Input Resistance
Differential
6 kΩ
VIN Input DC Bias
@pin 8, pin 10
2.3 V
Gm Transconductance
17 mS
IIP3 Input IP3
108 dBµV
IQG IQ Gain Adjustment
-1 +1 %
IQP IQ Phase Adjustment
-7 +8 °C
IRR Image Rejection Ratio
without adjustment
30
dB
adjusted
42 dB
Gvmix1
Gain
from input (single-ended) to
IFT1 out differential
22
dB
IFT1 Adjustment
Cift1min
IFT1 Adjustment Capacitor
Minimum
Between MIX1OUT+ and
MIX1OUT-
2.3 pF
5/74
5 Page 
TDA7514
Table 3. (continued)
Symbol
Parameter
Test Condition
Min Typ Max
SoftMute by Adjacent Channel Detector
Vthsmac1 Threshold level1
T14<2>=0
2.75
Vthsmac2 Threshold level2
T14<2>=1
3.25
Attsmac1 Attenuation1
T14<7:6>=00
0
Attsmac2 Attenuation2
T14<7:6>=01
6
Attsmac3 Attenuation3
T14<7:6>=10
9
Attsmac4 Attenuation4
T14<7:6>=11
12
Station Detector by Smeter
www.DataSheeVt4SUD.clom Low output level
@SDpin
0
VSDh
High output level
@SDpin
5
Vthsdmin Threshold level minimum
T20<3:0>=0000
0.4
Vthsdmax Threshold level maximum
T20<3:0>=1111
3.4
Vthsdstep Threshold level step
0.2
Adjacent Channel Detector for Quality outputs, SNC and HCC
F1ac1
Cutoff or center frequency of
filter1
T8<4>=0
83
F1ac2
Cutoff or center frequency of
filter1
T8<4>=1
104
F2ac1
Cutoff or center frequency of
filter2
T8<5>=0
119
F2ac2
Cutoff or center frequency of
filter2
T8<5>=1
139
GcF2ac1 Gain of filter2
T18<7>=0
8.7
GcF2ac2 Gain of filter2
T18<7>=1
14.7
∆Vrect1
Offset1 of rectifier for
SNC&HCC
T18<5:4>=00
0.4
∆Vrect2
Offset2 of rectifier for
SNC&HCC
T18<5:4>=01
0.8
∆Vrect3
Offset3 of rectifier for
SNC&HCC
T18<5:4>=10
1.2
∆Vrect4
Offset4 of rectifier for
SNC&HCC
T18<5:4>=11
1.6
Multipath Detector for Quality output, SNC and HCC (Filter shared with ISS multipath detector)
Gvrectl
Rectifier Gain minimum
T15<7:5>=000
5
Gvrecth Rectifier Gain maximum
T15<7:5>=111
13.4
Gvrectstep Rectifier Gain step
1.2
Unit
V
V
dB
dB
dB
dB
V
V
V
V
V
kHz
kHz
kHz
kHz
dB
dB
V
V
V
V
dB
dB
dB
11/74
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| PDF Descargar | [ Datasheet TDA7514.PDF ] | |
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