TDA7421 ,AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONSABSOLUTE MAXIMUM RATINGSSymbol Parameter Value UnitTamb Operating Temperature Range -40 to 85 °CTst ..
TDA7421N ,AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONSAPPLICATIONS■ AM DOUBLE CONVERSION ARCHITECTURETQFP64■ AM/FM STATION DETECTOR AND DIGITAL ORDERING ..
TDA7427AD ,AM-FM RADIO FREQUENCY SINTHESIZER AND IF COUNTERELECTRICAL CHARACTERISTICS (Tamb = 25°C; VDD1 = 5V; VDD2 = 10V; fOSC = 4MHz; unless other-wise spec ..
TDA7427AD1 ,AM-FM RADIO FREQUENCY SINTHESIZER AND IF COUNTERABSOLUTE MAXIMUM RATINGSSymbol Parameter Value UnitV Supply Voltage - 0.3 to + 7 VDD1V Supply Volta ..
TDA7427D ,AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTERTDA7427®AM-FM RADIO FREQUENCY SYNTHESIZERAND IF COUNTERON-CHIP REFERENCE OSCILLATOR ANDPROGRAMMABLE ..
TDA7429L ,3 BAND EQUALIZER AUDIO PROCESSOR WITH SUBWOOFER CONTROLapplications in TV and Hi-Fi systems, providing alsoFigure 1. Test Circuit2.2m F 2.2m F0.47m F 0.47 ..
THS0842 ,8-Bit, 40 MSPS ADC Dual Ch. (Config.), Dual Simultaneous S&H, Low Power, PowerDownblock diagramAVDDDRV DVDD DDCOUTCLK Timing CircuitryCOUTI +Sample& HoldI –DA(7–0)3-State8 BITBUSMUX ..
THS0842IPFB ,8-Bit, 40 MSPS ADC Dual Ch. (Config.), Dual Simultaneous S&H, Low Power, PowerDownTHS0842 DUAL-INPUT, 8-BIT, 40 MSPS LOW-POWER ANALOG-TO-DIGITAL CONVERTERWITH SINGLE OR DUAL PARALLE ..
THS10064 ,10-Bit, 6 MSPS ADC Quad Ch. (Config.), DSP/uP Interface, Integ. 16x FIFO, Ch. AutoScan, Low PowerFEATURES DESCRIPTION* High-Speed 6 MSPS ADCThe THS10064 is a CMOS, low-power, 10-bit, 6 MSPS* 4 Ana ..
THS10064CDA ,10-Bit, 6 MSPS ADC Quad Ch. (Config.), DSP/uP Interface, Integ. 16x FIFO, Ch. AutoScan, Low PowerMAXIMUM RATINGS(1)over operating free-air temperature range unless otherwise notedTHS10064DGND to D ..
THS10064CDAR ,10-Bit, 6 MSPS ADC Quad Ch. (Config.), DSP/uP Interface, Integ. 16x FIFO, Ch. AutoScan, Low PowerELECTRICAL CHARACTERISTICS over recommended operating conditions, AV = 5 V, DV = BV = 3.3 V, f = ..
THS10064IDA ,10-Bit, 6 MSPS ADC Quad Ch. (Config.), DSP/uP Interface, Integ. 16x FIFO, Ch. AutoScan, Low Powermaximum ratings” may cause permanent damage to the device. These are stress ratings only, andfuncti ..
TDA7421
AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONS
gerTg,,'
TDA7421
AM/FM TUNER FOR CAR RADIO
AND Hi-Fi APPLICATIONS
FRONT-END FOR AM/FM RECEIVERS
'' UP-CONVERSION ARCHITECTURE FOR AM
. HIGH SPEED PLL WITH INLOCK DETECTOR
FOR OPTIMIZED RDS APPLICATIONS
SINGLE FREQUENCY REFERENCE FOR AM/FM
AM/FM STATION DETECTOR
'' PP-CONTROLLED COMPENSATION OF EX-
TERNAL COMPONENTS SPREAD
'' ADJUSTABLE AUDIO MUTE
. FULLY PROGRAMMABLE BY " BUS
ADVANCED BICMOS TECHNOLOGY
GENERAL DESCRIPTION
The TDA7421 is a high performance tuner circuit
that integrates AM/FM sections, IF counter and
PLL synthesizer on a single chip.
Use of BICMOS technology allows the implemen-
tation of tuning functions with a minimum of exter-
nal components.
Value spread of external components can be fully
PINS CONNECTION
" , t _
TQFP64
ORDERING NUMBER: TDA7421
compensated by means of on-chip electrical ad-
justment controlled by external WP.
The Automatic Gain Control (AGC) operates on
different sensitivities and bandwidths in 02rder to
improve sensitivity and dynamic range. I C bus
allows to control selected functions of the tuner
(AGC and amplifiers gain, PLL and counters op-
eration modes).
t + , + ' 5 + '
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AMMIX1IN- [] 1 C) 48 [l FM IFAMP2 OUT
AMMIX1lN+ l: 2 47 [l FIVCC
FMMIXIN-[3 46]FMLIMIN+
FMMIXIN+E4 45]FMLIMIN-
FM RFAGCIN L 5 44 [l |F1GND
FMAGCOUTEG 43 JFM BWTC
RF GND E 7 42 [] FM MUTE DRIVE
FM SMETER AM SMETER
VCOBES 41 :lFMDETADJ
VCOEEQ 40:]FMSDAMSD
OSC GND E 10 39 1 AUDIO OUT
XTALDE 11 38 JFMQUAD+
XTALGE 12 37 JFMQUAD-
OSCVCCE 13 36]IF2vcc
FM ANT ADJ l: 14 35 [l AMIFZIN
FM RFADJE 15 34 JAM REF
PLL vcc f] 16 33 [l AM BPF
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O u. CL I ' 0 y, tn > (blow a) CM D DQGAU546A
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a‘ n. o tT:slr/drol - < <
June 1998
IFC SSTOF‘
AM STEREO OUT QUAD.
mo amv
mo Idwv
"ll MW
.100 xlw
uno xlw
vNI wn
FM MUTE
FILTER
FM AGC OUT
FM RF Nsc IN
FILrER
QUADRATU RE
DETECTOR
cou NTEN
LIMITER
AUDIO OUT
AM SMETER
FM SMETER
FM DET ADJ our
TRIPLE
SMETER
STATION
AM 50/
DETUNING
DEYUNI NG
DETECTOR
COMPARATOR
ADJACENT
CH. MUTE
1 0.25MHx
ADJACENT
CH DET
J an MC FM Am ADJ
4 BIY DAG
FM RF Am
AM MIX IN~
CHARGE
AM RF AGC PUMP
PLL vcc
PLL VREF
FILTER
AM AGCI RF AMP 0u1
PLL GND
AGCI ANY
COU NTER
DEIEC roR
.NI zxm
241 NT k
BLOCK DIAGRAM
TDA7421
