TDA8566_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 15 October 2007 8 of 21
NXP Semiconductors TDA8566
2×40 W/2 Ω stereo BTL car radio power amplifier
7.6 Differential inputs
The input stage is a high-impedance fully differential balanced input stage that is also
capableof operating in a single-ended mode with one of the inputs capacitively coupled to
an audio ground. It should be noted that if a source resistance is added (input voltage
dividers) the CMRR degrades to lower values.
8. Limiting values9. Thermal characteristicsTable 5. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol Parameter Conditions Min Max Unit
VPsupply voltage operating - 18 V
non-operating - 30 V
load dump protection;
during 50 ms; tr≥2.5ms -45V
IOSM non-repetitive peak output
current -10A
IORM repetitive peak output
current - 7.5 A
Tstg storage temperature −55 +150 °C
Tvj virtual junction temperature - 150 °C
Tamb ambient temperature −40 +85 °C
Vpsc short-circuit safe voltage - 18 V
Vrp reverse polarity voltage - 6.0 V
Ptot total power dissipation - 60 W
Table 6. Thermal characteristics
Thermal characteristics in accordance with IEC 60747-1.
Symbol Parameter Conditions Typ Unit
Rth(j-c) thermal resistance from junction to case seeFigure 7 1.3 K/W
Rth(j-a) thermal resistance from junction to ambient in free air 40 K/W
Fig 7. Equivalent thermal resistance network
001aaa155
2.2 K/W 2.2 K/W
0.2 K/W
case
output 1
virtual junction
output 2