TDA7391PD Fast Delivery |IC PHOENIX CO.,LIMITED

TDA7391PD ,32W BRIDGE CAR RADIO AMPLIFIERFUNCTIONAL DESCRIPTIONPin Function DescriptionThe input stage is a high impedance type also capable ..
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TDA7391PD
32W BRIDGE CAR RADIO AMPLIFIER
TDA7391PD
32W BRIDGE CAR RADIO AMPLIFIER
PRODUCT PREVIEW
HIGH POWER CAPABILITY:
40W/3.2Ω EIAJ
32W/3.2Ω @VS= 14.4V,f= 1KHz,d= 10%
26W/4Ω @VS= 14.4V,f= 1KHz,d= 10%
DIFFERENTIAL INPUTS (EITHER SINGLE
ENDED OR DIFFERENTIAL INPUT SIGNAL
ARE ACCEPTED)
MINIMUM EXTERNAL COMPONENTCOUNT: NO BOOTSTRAPCAPACITORS NO BOUCHEROT CELLS INTERNALLY FIXED GAIN (30dB) NO SVR CAPACITOR
ST.-BY FUNCTION (CMOS COMPATIBLE)
PROGRAMMABLE TURN-ON/OFF DELAY AUDIBLE POP DURING MUTE AND ST- OPERATIONS
PROTECTIONS:
SHORT CIRCUIT (TO GND, TO VS, ACROSS
THE LOAD)
VERY INDUCTIVE LOADS
CHIP OVERTEMPERATURE
LOAD DUMP
OPEN GND
ESD
DESCRIPTION
The TDA7391PDisa BRIDGE class AB audio
power amplifier specially intended for car radio
High Power applications.
The high power capability together with the possi-
bilityto operate eitherin DIFFERENTIAL INPUT
MODEor SINGLE ENDED INPUT MODE makes suitable for boosters and high end car radio
equipments.
The exclusive fully complementary output stage
and the internal fixed gain configuration drop the
external component count.
Theon board clipping detector allows easy imple-
mentationof gain compression systems.
October 1998
IN- 0.22μF 0.22μF
IN+ST-BY 1,10,11,20
OUT+
OUT-
Vref
TDA7391PD
D98AU871
R1
4.7KΩ 1000μF
GNDR2
56KΩC3
33μF 100nF
516μC
+VS
SW1
Figure1: Test And Application Circuit
PowerSO20
ORDERING NUMBER: TDA7391PD
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VCC1 VCC2
REFERENCES
STANDBY THRESHOLD
SHORTCIRCUIT
DUMP&THERMAL
PROTECTION
ICM
COMMON
MODE
VCC/2gm
MUTETHRESHOLD
PROGRAMMABLE
CURRENT CIRCUIT
LTS V=f(Tj)
POWERAMP
POWERAMP
THD
DETECT
LTS
DISABLE 94
IN-
IN+
OUT-
OUT+
MUTE SYNC S-GND STANDBY D98AU872
P-GND
1,10,11,20
Figure2: Block Diagram
THERMAL DATA
Symbol Description Value Unit
Rth j-case Thermal Resistance Junction-case Max 2 °C/W
P-GND
OUT+
N.C.
ST-BY
VCC
N.C.
N.C.
SYNC
MUTE S-GND
N.C.
IN-
VCC
IN+
N.C.
OUT-
P-GND1
P-GND P-GND
D98AU873
PIN CONNECTION (Top view)
TDA7391PD
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ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit DC Supply Voltage 28 V
VOP Operating Supply Voltage 18 V
VPEAK Peak Supply Voltage(t= 50ms) 50 V Output Peak Current repetitive(f> 10Hz)
Output Peak Current non repetitive
Ptot Power Dissipation (TCASE=85°C) 32 W
Tstg,Tj Storage and Junction-Case Temperature -40to 150 °C
ELECTRICAL CHARACTERISTICS (VS= 14.4V; RL =4Ω,f= 1KHz, Tamb =25°C, unless otherwise
specified)
Symbol Parameter Test Condition Min. Typ. Max. Unit Supply Voltage Range 8 18 V Total Quiescent Current 60 150 mA
VOS Output Offset Voltage 120 mV
ISB ST-BY Current VST-BY= 1.5V 100 μA
ISBin ST-BY Input Bias Current VST-BY =5V 10 μA
VSBon ST-BYOn Threshold Voltage 1.5 V
VSBoff ST-BYOff threshold Voltage 3.5 V
ATTST-BY ST-BY Attenuation 90 dB
IMin Mute Input Bias Current (VMUTE= 5V) 10 μA Mute Attenuation 90 dB RMS Output Power d= 10% 1%= 10%;RL= 3.2Ω 26
EIAJ Output Power VS= 13.7V 40 W Distortion= 0.1to 15W
0.03 Voltage Gain 29.5 30 30.5 dB High Frequency rolloff PO= 1W; -3dB 75 KHz
RIN Input Impedance Differential 36 60 KΩ
Single Ended 30 55 KΩ
EIN Input Noise Voltage Rg =0Ω;f = 22Hzto 22KHz 4 mV
CMRR Input Common Mode Rejection f= 1KHz; VIN= 1Vrms 65 dB
SVR Supply Voltage Rejection Rg =0Ω;Vr= 1Vrms 60 dB
CDL Clipping Detection Level 5 10 15 %
Tsd Absolute Thermal Shutdown
Junction Temperature
160 °C
TDA7391PD
3/8
FUNCTIONAL DESCRIPTION
Pin Function Description
14, INPUTS
The input stageisa high impedance type also capableof operationin single ended mode
with one input capacitively coupledto the signal GND. The impedance seenbythe
inverting and non inverting input pins mustbe matched.
5,16 +VS Supply Voltage. CD
The TDA7391PDis equipped witha diagnostic circuitry ableto detect the clippingin the
Output Signal (distortion= 10%).
The CDpin (open collector) givesout low level signal during clipping.
2,19 OUTPUTS
The output stageisa bridge type ableto drive loadsas lowas 3.2Ω. consistsof two classAB fully complementary PNP/NPN stages fully protected.railtorail output voltage swingis achieved without needof bootstrap capacitors. external compensationis necessary.
1,10,
11,20 P-GND
Power Ground. S-GND Signal Ground. STAND-BY
The device featuresa ST-BY functionwhich shuts downallthe internal bias supplies
whenthe ST-BYpinis low. ST-BYmode the amplifier sinksa small current(inthe rangeof few μA).
Whenthe ST-BYpin ishightheIC becomes fully operational. SYNC resistor (R2) hastobe connect betweenpin 8and GNDin orderto program the current
that flowsintheC3 capacitor (pin9). The valuesofC3 andR2 determine the time required biasthe amplifier. MUTE Thepinwill havea capacitor (C3) tiedto GNDtosetthe MUTE/STAND-BY time.An
automatic Mute during turn on/offis providedto prevent noisy transients.
TDA7391PD
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Figure2: Quiescent Currentvs Supply Voltage Figure3: EIAJ powervs Supply Voltage
Figure4: OutputPowervs SupplyVoltage
(@RL =4Ω)
Figure5: Distortionvs Frequency(@ RL =4Ω)
Figure6: OutputPowervs SupplyVoltage
(@RL =3.2Ω) Figure7: Distortionvs Frequency(RL =4Ω)= 3.2Ω= 14.4V =4Ω= 12W= 3.2Ω= 1KHz= (Hz)= (Hz) =4Ω= 1KHz= 14.4V= 3.2Ω= 15W =4Ω
TDA7391PD
5/8
Figure8: Supply Voltage Rejectionvs Frequency Figure9: Common Mode Rejection vs. Frequency
Figure 10: TotalPowerDissipation& Efficiencyvs.
OutputPower(@RL =4Ω)
Figure 11: PowerBandwidth= (Hz)= (Hz) f= (Hz)= 14.4V =4Ω =1W (W)= 14.4V =4Ω= 1KHz= 14.4V
Vcm= 1Vrms =4Ω =0= 14.4V= 1Vrms =4Ω =0
TDA7391PD
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Partno	Mfg	Dc	Qty	Available	Descript
TDA7391PD	STM	N/a	5670	avai	32W BRIDGE CAR RADIO AMPLIFIER