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Ordering number : EN4477A477
43097HA (OT)/73093YO 5-2191 No. 4477-1/3
STK4121V
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
AF Power Amplifier (Split Power Supply)
(15 W + 15 W min, THD = 0.08 %)
Thick Film Hybrid IC
Features
• Built-in muting circuit cuts off various kinds of pop
noises.
• Current mirror circuit provides low distortion (THD =
0.08%).
• Pin compatible with the STK4102II series, forming a series
of products with output powers from 15 W/ch to 120 W/ch.
Specified Transformer Power Supply (RP-22 equivalent)
Package Dimensions
unit: mm
4040
[STK4121V]
Specifications
Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
CC
max ±32 V
Thermal resistance
θj-c 2.6 °C/W
Junction temperature Tj max 150 °C
Operating substrate temperature Tc 125 °C
Storage temperature Tstg –30 to +125 °C
Available time for load short circuit t
s
VCC= ±21.5 V, RL= 8 Ω, f = 50 Hz, PO= 15 W 2 s
Recommended Operating Conditions at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Recommended supply voltage V
CC
±21.5 V
Load resistance R
L
8 Ω
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STK4121V
No. 4477-2/3
Operating Characteristics
at Ta = 25°C, VCC= ±21.5 V, RL= 8 Ω, Rg = 600 Ω, VG = 40 dB, RL: non-inductive load
Ratings
Parameter Symbol Conditions
min typ max
Unit
Quiescent current I
CCO
VCC= ±26 V 20 40 100 mA
Output power P
O
(1) THD = 0.08%, f = 20 Hz to 20 kHz 15 W
P
O
(2) VCC= ±18 V, THD = 0.2%, RL= 4 Ω, f = 1 kHz 15 W
Total harmonic distortion THD P
O
= 1.0 W, f = 1 kHz 0.08 %
+0
Frequency response f
L
, f
H
PO= 1.0 W, dB 20 to 50 k Hz
–3
Input impedance r
i
PO= 1.0 W, f = 1 kHz 55 kΩ
Output noise voltage V
NO
VCC= ±26 V, Rg = 10 kΩ 1.2 mVrms
Neutral voltage V
N
VCC= ±26 V –70 0 +70 mV
Muting voltage V
M
–2 –5 –10 V
Notes
• Use a constant voltage power supply for the test power supply unless otherwise noted.
• Use the transformer power supply shown in the figure above when measuring the available time for load short circuit and the output noise voltage.
• The output noise voltage is the peak value measured with an averaging rms scale volt meter (VTVM). A 50 Hz AC stabilized power supply should be used
to eliminate the effects of AC primary line flicker noise when an AC power supply is used.
Equivalent Circuit
Unit ( resistance: Ω, capacitance:F)
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Sample Application Circuit: 15 W (minimum) 2-channel AF power amplifier
STK4121V
No. 4477-3/3
This catalog provides information as of April, 1997. Specifications and information herein are subject to change
without notice.
■ No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace
equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of
which may directly or indirectly cause injury, death or property loss.
■ Anyone purchasing any products described or contained herein for an above-mentioned use shall:
➀ Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and
distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all
damages, cost and expenses associated with such use:
➁ Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on
SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees
jointly or severally.
■ Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for
volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied
regarding its use or any infringements of intellectual property rights or other rights of third parties.
Unit ( resistance: Ω, capacitance:F)
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