Ordering number: EN2203B
Thick Film Hybrid IC
STK4122
II
AF Power Amplifier (Split Power Supply)
(15W + 15W min, THD = 0.4%)
Features
• The STK4102II series (STK4122II) and STK4101V
series (high-grade type) are pin-compatible in the out-
put range of 6W to 50W and enable easy designing.
• 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
4083
[STK4122
II
]
Specifications
Maximum Ratings
at Ta = 25
°
C
Parameter
Maximum supply voltage
Thermal resistance
Junction Temperature
Operating substrate temperature
Storage temperature
Available time for load short-circuit
Symbol
V
CC
max
θ
j-c
Tj
Tc
Tstg
ts
V
CC
=
±
20V, R
L
= 8
Ω
, f = 50Hz, Po = 15W
Conditions
Ratings
±
30.5
3.0
150
125
–30 to +125
2
Unit
V
°
C/W
°
C
°
C
°
C
s
Recommended Operating Conditions
at Ta = 25
°
C
Parameter
Recommended supply voltage
Load resistance
Symbol
V
CC
R
L
Conditions
Ratings
±
20
8
Unit
V
Ω
SANYO Electric Co., Ltd. Semiconductor Business Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
70397HA (ID) / O138YT / 9058MO, TS No. 2203—1/8
STK4122
II
Operating Characteristics
at Ta = 25
°
C, V
CC
=
±
20V, R
L
= 8
Ω
, Rg = 600
Ω
, VG = 40dB,
R
L
: non-inductive load
Parameter
Quiescent current
Symbol
Icco
Po (1)
Output power
Po (2)
Total harmonic distortion
Frequency response
Input impedance
Output noise voltage
Neutral voltage
Muting voltage
THD
f
L
, f
H
r
i
V
NO
V
N
V
M
Conditions
V
CC
=
±
26V
THD = 0.4%,
f = 20Hz to 20kHz
V
CC
=
±
17V, THD = 1.0%,
R
L
= 4
Ω
, f = 1kHz
Po = 1.0W, f = 1kHz
Po = 1.0W,
+0
dB
–3
20 to 50k
55
1.2
–70
–2
0
–5
+70
–10
min
20
15
15
0.3
typ
40
max
100
Unit
mA
W
W
%
Hz
k
Ω
mVrms
mV
V
Po = 1.0W, f = 1kHz
V
CC
=
±
26V, Rg = 10k
Ω
V
CC
=
±
26V
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.
Specified Transformer Power Supply
(Equivalent to RP-22)
Equivalent Circuit
No. 2203—2/8
STK4122
II
Sample Application Circuit :
15W min 2-channel AF power amplifier
Sample Printed Circuit Pattern for Application Circuit
(Cu-foiled side)
No. 2203—3/8
Voltage gain, VG - dB
Total harmonic distortion, THD - %
Output power, P
O
- W
Input voltage, Vi - mV
Output power, P
O
- W
Frequency, f - Hz
Output power, P
O
- W
Output power, P
O
- W
Frequency, f - Hz
STK4122
II
Quiescent current, Icco - mA
Total harmonic distortion, THD - %
Operating substrate temperature, Tc -
°
C
No. 2203—4/8
Neutral voltage, V
N
- mV
Voltage gain, VG - dB
IC power dissipation, Pd - W
Quiescent current, Icco - mA
Supply voltage, V
CC
- V
Output power, P
O
- W
Frequency, f - Hz
Neutral voltage, V
N
- mV
IC power dissipation, Pd - W
Output power, P
O
- W
Supply voltage, V
CC
- V
Output power, P
O
- W
STK4122
II
No. 2203—5/8
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