Sony CXA1622P, CXA1622M Datasheet
—1—
E92121B79-TE
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage VCC 8V
•Operating temperature Topr –10 to +60 °C
• Storage temperature Tstg –65 to +150 °C
• Allowable power dissipation
PD 410 (CXA1622M) mW
1200 (CXA1622P) mW
Operating Conditions (Ta=25 °C)
• Supply voltage
• Stereo mode
{
1.8 V to 4.5 V (CXA1622M)
1.8 V to 7.0 V (CXA1622P)
• Monaural BTL mode 1.8 V to 4.5 V
(3 V recommended)
Description
The CXA1622M/P is a bipolar IC developed as
power amplifier for compact radio cassettes with
built-in pre-amplifier and power amplifier electrical
volume.
Features
• Use one channel in stereo mode
· EIAJ output=110 mW (Typ.), VCC=3 V, RL=8 Ω
(CXA1622M)
· EIAJ output=450 mW (Typ.), VCC=6 V, RL=8 Ω
(CXA1622P)
• BTL mode
· EIAJ output=320 mW (Typ.), VCC=3 V, RL=8 Ω
(CXA1622M)
· EIAJ output=360 mW (Typ.), VCC=3 V, RL=8 Ω
(CXA1622P)
• Built-in electrical volume
• Built-in ripple filter (ripple rejection 34.5 dB typ.)
• Selection between stereo power amplifier and
monaural BTL power amplifier is possible by
switching Pin 2.
Applications
Suitable for audio power amplifier for stereo and
monaural radios and power amplifier for radio
cassette and Walkman.
Stereo Power Amplifier/Monaural BTL Power Amplifier
CXA1622M CXA1622P
16 pin SOP (Plastic) 16 pin DIP (Plastic)
1000
500
PD-Power dissipation (mW)
Power dissipation curve
Free air
CXA1622P
CXA1622M
–30 –20 –10 0 10 20 30 40 50 60 70
Ta-Ambient temperature (°C)
CXA1622M/P
—2—
CXA1622M/P
Pin Description
Pin
Symbol Equivalent circuit
Pin voltage
Description
No. 3 V 6 V
1, 16
3
4, 13
5, 12
6, 11
7, 10
8
9
IN1
IN2
NC
NF1
NF2
GND1
GND2
P-GND1
P-GND2
OUT1
OUT2
RIPPLE
VCC
VCC
11k
7.5k
GND
16
1
4.7k
100k
GND
VCC
13
4
GND
V
CC
100k
10
7
VCC
8.5k
73k 73k
90k 90k
8
0
—
1.5
0
0
1.5
2.72
3
0
—
3
0
0
3
5.43
6
Input
Power amplifier NF.
Connected to time constant 4.7 µF.
Pre-amplifier GND
Power amplifier GND
Power amplifier output
Connected to time constant 10 µF
for ripple filter.
VCC
—3—
CXA1622M/P
Pin
Symbol Equivalent circuit
Pin voltage
Description
No. 3 V 6 V
14
15
2
VOL
REG
SW
VCC
20k
80k
GND
14
VCC
4k
24k
15
VCC
15k
15k
REG
2
0 to
1.25
1.25
1.25
0 to
1.25
1.25
1.25
Control gain with change in voltage
(0 to 1.25 V) to electrical volume
control pin.
Regulator pin
Mode selection SW
• BTL mode when open
• Stereo mode when connected to
GND
Block Diagram, Pin Configuration, and Application Circuit
1) Stereo mode
+
+
+
+
+ +
+
+
+
IN1
C2
10µ
C3
10µ
IN1IN2
REGSW
VOLNC
NF1NF2
GNDGND
P GND1P GND2
OUT1OUT2
V
CCRIPPLE
R1
50k
C5
3.3µ
C7
0.1µ
C9
0.1µ
C10
220µ
C12
220µ
V1
3V
GND
SP1
8
OUT1
16 15 14 13 12 11 10 9
87654321
REG VOL
PRE+POWER1
PRE+POWER2
IN2
C1
10µ
C4
3.3µ
C5
0.1µ
C8
10µ
C11
220µ
GND
GND
OUT2
SP2
8
—4—
CXA1622M/P
2) BTL mode
+
+
+
+ +
+
IN
C1
C2
10µ
IN1IN2
REGSW
VOLNC
NF1NF2
GNDGND
P GND1P GND2
OUT1OUT2
V
CCRIPPLE
R1
50k
C4
3.3µ
C6
0.1µ
C8
0.1µC9220µ
V1
3V
SP2
8
OUT+
16 15 14 13 12 11 10 9
87654321
REG VOL
PRE+POWER1
PRE+POWER2
C3
3.3µ
C5
0.1µ
C7
10µ
GND
OUT–
10µ
∗ The input signal enters the pre-amplifier with attenuation controlled with DC at Pin 14 and then it is amplified
by the approximately 30 dB (fixed) power amplifier.
∗ The state of Pin 2 can be used to select between stereo mode and monaural BTL mode.
The pre-power 1 and pre-power 2 output are positive phase output when Pin 2 is GND. Pre-power 2 is
inverse output of pre-power 1 output when Pin 2 is open.
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for
any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
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