STK4142
II
SANYO Electric Co., Ltd. Semiconductor Business Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
70397HA (ID) / O138YT / 9068MO, TS No. 2665--1/8
Ordering number: EN2665B
Thick Film Hybrid IC
AF Power Amplifier (Split Power Supply)
(25W + 25W min, THD = 0.4%)
Features
The STK4102II series (STK4142II) and STK4101V
series (high-grade type) are pin-compatible in the out-
put range of 6W to 50W and enable easy design.
Small-sized package whose pin assignment is the same
as that of the STK4101II series
Built-in muting circuit to cut off various kinds of pop
noise
Greatly reduced heat sink due to substrate temperature
125
C guaranteed
Excellent cost performance
Package Dimensions
unit: mm
4040
[STK4142
II
]
Specifications
Maximum Ratings
at Ta = 25
C
Recommended Operating Conditions
at Ta = 25
C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V
CC
max
39
V
Thermal resistance
j-c
2.6
C/W
Junction Temperature
Tj
150
C
Operating substrate temperature
Tc
125
C
Storage temperature
Tstg
-
30 to +125
C
Available time for load short-circuit
ts
V
CC
=
26V, R
L
= 8
, f = 50Hz, Po = 25W
2
s
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
V
CC
26
V
Load resistance
R
L
8
STK4142
II
No. 2665--2/8
Notes.
For power supply at the time of test, use a constant-voltage power supply
unless otherwise specified.
For measurement of the available time for load short-circuit and output
noise voltage, use the specified transformer power supply shown right.
The output noise voltage is represented by the peak value on rms scale
(VTVM) of average value indicating type. For AC power supply, use an
AC stabilized power supply (50Hz) to eliminate the effect of flicker noise
in AC primary line.
Operating Characteristics
at Ta = 25
C, V
CC
=
26V, R
L
= 8
, Rg = 600
, VG = 40dB,
R
L
: non-inductive load
Parameter
Symbol
Conditions
min
typ
max
Unit
Quiescent current
Icco
V
CC
=
31V
20
40
100
mA
Output power
Po (1)
THD = 0.4%,
f = 20Hz to 20kHz
25
W
Po (2)
V
CC
=
22V, THD = 1.0%,
R
L
= 4
, f = 1kHz
25
W
Total harmonic distortion
THD
Po = 1.0W, f = 1kHz
0.3
%
Frequency response
f
L
, f
H
Po = 1.0W,
dB
20 to 50k
Hz
Input impedance
r
i
Po = 1.0W, f = 1kHz
55
k
Output noise voltage
V
NO
V
CC
=
31V, Rg = 10k
1.2
mVrms
Neutral voltage
V
N
V
CC
=
31V
70
0
+70
mV
Muting voltage
V
M
2
5
10
V
+0
3
Specified Transformer Power Supply
(Equivalent to RP-22)
Equivalent Circuit
STK4142
II
No. 2665--3/8
Sample Application Circuit :
25W min 2-channel AF power amplifier
Sample Printed Circuit Pattern for Application Circuit
(Cu-foiled side)
STK4142
II
No. 2665--4/8
Input voltage, Vi - mV
Output power, Po - W
Frequency, f - Hz
Output po
wer
, Po -
W
T
otal harmonic distortion,
THD - %
V
oltage g
ain,
V
G
- dB
Output power, Po - W
Frequency, f - Hz
Operating substrate temperature, Tc -
C
T
otal harmonic distortion,
THD - %
Output po
wer
, Po -
W
Quiescent current, Icco - mA
Neutral v
oltage,
V
N
- mV
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