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PDF STK4412 Data sheet ( Hoja de datos )

Número de pieza STK4412
Descripción 2-Channel AF Power Amplifier
Fabricantes Sanyo Semicon Device 
Logotipo Sanyo Semicon Device Logotipo



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No Preview Available ! STK4412 Hoja de datos, Descripción, Manual

Ordering number: EN2860A
Thick Film Hybrid IC
STK4412
2-Channel AF Power Amplifier
(20W+20W min, THD = 1.0%)
Features
Package Dimensions
• Small and slim package with 31mm height
• Pin compatible with STK430 series heretofore in use
• Greatly reduced heat sink due to case temperature
125°C guaranteed
• Excellent cost performance
unit: mm
4033
[STK4412]
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Operating substrate temperature
Storage temperature
Available Time for load short-circuit
Symbol
VCC max
Tc
Tstg
ts
Conditions
VCC = 44V, RL = 8, f = 50Hz, Po = 20W
Recommended Operating Conditions at Ta = 25°C
Ratings
63
125
30 to +125
2
Parameter
Recommended operating voltage
Load resistance
Symbol
VCC
RL
Conditions
Ratings
44
8
Operating Characteristics at Ta = 25°C, VCC = 44V, RL = 8, Rg = 600, VG = 40dB
Parameter
Quiescent current
Output power
Total harmonic distortion
Frequency response
Input impedance
Output noise voltage
Symbol
Icco
Po (1)
Po (2)
THD
fL, fH
ri
VNO
Conditions
VCC = 53V
THD = 1.0%, f = 1kHz
THD = 1.0%,
f = 30Hz to 20kHz
Po = 0.1W, f = 1kHz
Po
=
0.1W,
+0
3
dB
Po = 0.1W, f = 1kHz
VCC = 53V, Rg = 10k
min typ
20 60
20
10
20 to 100k
110
max
120
0.3
0.8
Unit
V
°C
°C
s
Unit
V
Unit
mA
W
W
%
Hz
k
mVrms
SANYO Electric Co., Ltd. Semiconductor Business Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
110297HA (ID) / 9098TA No. 2860—1/7

1 page




STK4412 pdf
Description of External Parts
STK4412
C1, C2
C3, C4
C5, C6
C15
R7, R8
R11
C9, C10
R1, R2
R12
R3, R5
(R4, R6)
C7, C8
R13
C11, C12
C13
C14
R9, R10
Input filter capacitors
• A filter formed with R1 or R2 can be used to reduce noise at high frequencies.
Input coupling capacitors
• Used to block DC current. When the reactance of the capacitor increases at low frequencies, the dependence of 1/f noise on signal source
resistance causes the output noise to worsen. It is better to decrease the reactance.
NF capacitors
• These capacitors fix the low cutoff frequency shown below.
fL = 2----π----------C--1---5---------R----3-- Hz
To provide the desired voltage gain at low frequencies, it is better to increase C5. However, do not increase C5 more than needed because
the pop noise level becomes higher at the time of application of power.
Capacitor for ripple filter
• Used to eliminate the ripple components that mix into the input side from the power line (+VCC).
Front stage bias resistors
Front stage bias resistor
Oscillation blocking capacitors
• A polyester film capacitor, being excellent in temperature characteristic, frequency characteristic, is recommended for C9, C10.
Resistors for input filter
Front stage bias resistor
These resistors fix voltage gain VG.
It is recommended to use R3 (R4) = 12for VG = 40dB.
• To adjust VG, it is desirable to change R3 (or R4).
Bootstrap capacitors
• When the capacitor value is decreased, the distortion is liable to be higher at low frequencies.
Resistor for ripple filter
(Limiting resistor for predriver TR at the time of load short)
Output capacitors
• These capacitors fix the low cutoff frequency.
Oscillation blocking capacitor
• Must be inserted as close to the IC power supply pins as possible so that the power supply impedance is decreased to operate the IC stably.
Decoupling capacitor
• When the capacitor value is increased, the starting time is made longer.
Oscillation blocking resistors
No. 2860—5/7

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