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ICs for Audio Common Use
AN7194K, AN7194Z
Dual BTL 50 W single power supply class-H power amplifier IC
■ Overview
The AN7194K and AN7194Z are single power supply, BTL, audio class-H power amplifier ICs. A class-H
power amplifier can be made up when this ICs are used in
combination with the AN7077Z which is separately market-available, and it is possible to make a low consumption power system. Also, the AN7194K and AN7194Z
are incorporating various protection circuits, so that those
ICs contribute to the high reliability design of set.
■ Features
• Incorporating various protection circuits :
Thermal protection, load short-cirucit, short circuit to
V
and short circuit to GND, overvoltage.
CC
• Built-in stand-by function
(Free from shock noise when standby turns-on/off)
• Built-in muting function
Free from shock noise at mute-on/off
Adapting attenuator method so that abnormal sound is
not generated due to waveform deformation
Attack time, recovery time are 20 ms or less
• Reduction in external components
NF and BS electrolytic capacitors are needless
RF electrolytic capacitor is needless
External muting function is needless
• OR output terminal is provided
• Designed for headphone use
• The AN7194K is of a 16-pin and the AN7194Z is of a
15-pin package
AN7194K
(10.0)
20.0±0.3
28.0±0.3
29.75±0.3
(10.0)
1.2+0.1
AN7194Z
18.00±0.30
13.50±0.30
1.50±0.10
4.00±0.20
3.25±0.10
11.3±0.3
7.7±0.3
φ3.6
R1.8
(0.6)
(12.5)
(1.2)
(14.1)
(17.63)
(18.7)
(21.5)
HZIP016-P-0665B
10.0±0.30
φ3.60±0.10
13.25±0.30
15.65±0.50
18.95±0.50
HZIP015-P-0745A
16
0.10
+0.15
-
(1.1)
0.6
(0.889)
(0.889)
1.788
1
1.45±0.151.80±0.15
R0.7
(2.54)
0.05
+0.10
-
0.25
(0.61)
–0.10
+0.20
0.50
1.27
115
(1.80)(1.95)
0.15
+
R0.55
–0.05
0.25
2.40±0.50
3.5±0.2
(2.54)
29.6±0.3
19.00±0.30
19.30±0.30
■ Applications
• Miniature audio component, CD player radio cassette,
karaoke are other audio equipment
1
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AN7194K, AN7194Z ICs for Audio Common Use
■ Block Diagram
12
2
34 dB
4
34 dB
3
■ Pin Descriptions
Pin No. Description
1 Power supply
2 Ch.1 output (−)
3 Grounding (output ch.1)
4 Ch.1 output (+)
5 Stand-by
6 Ch.1 input
7 Muting
8 Middle point (1/2 VCC)
1/2 V
8
5
CC
Ripple filter
6
9
OR
34 dB
1/2
11
7
34 dB
10
GND
Pin No. Description
9 OR output
10 GND
11 Ch.2 input
12 N.C.
13 Ch.2 output (+)
14 Grounding (output ch.2)
15 Ch.2 output (−)
16 N.C. (for the AN7194K only)
14
1
15
13
GND
V
CC
■ Absolute Maximum Ratings
Parameter Symbol Rating Unit
Supply voltage V
Supply current I
2
Power dissipation
*
CC
CC
P
AN7194K 37.5 W
D
26 V
9.0 A
AN7194Z 68.2
1
Operating ambient temperature
1
Storage temperature
Note)*1 : All items are at Ta = 25°C, except for the operating ambient temperature and storage temperature.
2 : The value when R
*
*
*
= 1.1°C/W, and Ta = 75°C
th(j-c)
T
opr
T
stg
−25 to +75 °C
−55 to +150 °C
■ Recommended Operating Range
Parameter Symbol Range Unit
Supply voltage V
2
CC
6.0 to 24.0 V