ICs for Audio Common Use
1
AN7191NZ
Dual 20 W BTL audio power amplifier
n Overview
The AN7191NZ is an audio power IC developed for
the sound output of car audio (dual 20 W). It is incorpo-
rating various protective circuits to protect the IC from
destruction by GND-open short circuit to GND and power
supply surge which are the important subject of power
IC protection, so the IC will largely contribute to a high
reliability design of equipment. Also, it is incorporating
a perfect muting circuit which is free from shock noise,
so that a shock noise design under the set transient con-
dition can be made easily using together with its standby
function.
n Features
• BTL 20 W · 2-channel (4 W ), G
V
= 34 dB
• Built-in various protection circuits (thermal protection,
short circuit to V
CC
and short circuit to GND, V
CC
-open
short circuit to V
CC
, GND-open short circuit to GND,
overvoltage and supply surge, and ASO, etc.)
Especially, the supply surge breakdown voltage is 100
V or more.
GND open breakdown voltage is 16 V or more.
• Built-in standby function (free from shock noise at
standby on/off)
• Built-in muting function
Free from shock noise at mute-on/off.
Adapting attenuator method so that abnormal sound due
to waveform deformation is not generated.
Attack time, recovery time are 50 ms or less.
• Reduction in external components
It eliminates the need for NF and BS electrolytic ca-
pacitors.
Muting function is not required, and power supply choke
coil is unnecessary.
• Provided with beep sound input pin
• 2 W load guaranteed
n Applications
• Car audio
HZIP015-P-0745A
Unit : mm
18.00±0.30
13.50±0.30
f 3.60±0.10
10.0±0.30
115
4.00±0.20
1.50±0.10
0.50
+0.20
–0.10 (0.61)
(2.54)
0.25
+0.15
–0.05
R0.55
3.25±0.10
13.25±0.30
18.95±0.50
15.65±0.50
1.27
(1.80) (1.95)
19.00±0.30
19.30±0.30
2.40±0.50