54GS-61SN
ICs ADITIONAL INFORMATION: TDA7480 (IC301,IC302,IC501)
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, VCC = ?14V; RL = 8&; RS = 50&;
Rf = 12K&; Demod.. filter L = 60?H, C = 470nF; f = 1KHz; Tamb = 25!C unless otherwise specified.)
SymbolParameterTest ConditionMin.Typ.Max.Unit
VSSupply Range?10?16V
IqTotal Quiescent CurrentRL = ; NO LC Filter2540mA
VOSOutput Offset VoltagePlay Condition�50+50mV
POOutput PowerTHD = 10%8.510W
THD = 1%67W
RL = 4& VCC = ?10.5V
THD = 10%10W
THD = 1%7W
Pd (*)Dissipated Power at 1W OutputRf = 12K& Pź = 1W 1W
Power
PDMAXMaximum Dissipated PowerPź = 10W THD 10%1.8W
2
Rth-j-amb = 38!C/W (Area 12cm)
?THD 10%8085%
POPO2
Efficiency a a (**)Rth-j-amb = 38!C/W (Area 12cm)
PO + PDPI
THDTotal Harmonic DistortionRL = 8&; PO = 0.5W0.1%
ImaxOvercurrent ProtectionRL = 03.55A
Threshold
TjThermal Shut-down Junction150!C
Temperature
GVClosed Loop Gain293031dB
eNTotal Input NoiseA Curve7?V
f = 20Hz to 22KHz12?V
RiInput Resistance2030K&
SVRSupply Voltage Rejectionf = 100Hz; Vr = 0.54660dB
Tr, TfRising and Falling Time50ns
RDSONPower Transistor on Resistance0.4&
FSWSwitching Frequency100120140KHz
FSW_OPSwitching Frequency Operative100200KHz
Range
9
BFZero Signal Frequency1.4x10Hz&
Constant (***)
RFFrequency Controller Resistor71214K&
Range (****)
MUTE & STAND-BY FUNCTIONS
VST-BYStand-by range0.8V
VMUTEMute Range1.82.5V
VPLAYPlay Range (1)4V
AMUTEMute Attenuation6080dB
IqST-BYQuiescent Current @ Stand-by35mA
*: The output average power when the amplifier is playing music can be considered roughly 1/10 of the maximum output power. So it is useful
to consider the dissipated power in this condition for thermal dimensioning.
**: PO = measured across the load using the following inductor:
COIL 58120 MPPA2 (magnetics) TURNS: 28 1mm
COIL77120 KOOL M? (magnetics) TURNS: 28 1mm
***: The zero-signal switching frequency can be obtained using the following expression: FSW = BF/RF
****: The maximum value of RF is related to the maximum possible value for the voltage drop on RF itself.
(1): For V12 >5.2V, an input impedance of 10K& is to be considered.
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