Amplificador De Audio
Páginas: 7 (1658 palabras)
Publicado: 18 de octubre de 2012
Ordering number: EN2665B
Thick Film Hybrid IC
STK4142II 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 output 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 mutingcircuit 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
[STK4142II]
Specifications
Maximum Ratings at Ta = 25°C
Parameter Maximum supply voltage Thermal resistance Junction Temperature Operating substrate temperature Storage temperature Available time for loadshort-circuit Symbol VCC max θj-c Tj Tc Tstg ts VCC = ±26V, RL = 8Ω, f = 50Hz, Po = 25W Conditions Ratings ±39 2.6 150 125 −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 VCC RL Conditions Ratings ±26 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 / 9068MO, TS No. 2665—1/8
STK4142II
Operating Characteristics at Ta = 25°C, VCC = ±26V, RL = 8Ω, Rg = 600Ω, VG = 40dB,
RL : 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 voltageTHD fL, fH ri VNO VN VM Conditions VCC = ±31V THD = 0.4%, f = 20Hz to 20kHz VCC = ±22V, THD = 1.0%, RL = 4Ω, f = 1kHz Po = 1.0W, f = 1kHz +0 Po = 1.0W, dB –3 Po = 1.0W, f = 1kHz VCC = ±31V, Rg = 10kΩ VCC = ±31V –70 –2 0 –5 20 to 50k 55 1.2 +70 –10 min 20 25 25 0.3 typ 40 max 100 Unit mA W W % Hz kΩ mVrms mV V
Notes.
For power supply at the time of test, use a constant-voltage power supplyunless 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. 2665—2/8
STK4142II
Sample Application Circuit : 25W min 2-channel AF power amplifier
Sample Printed Circuit Pattern for Application Circuit (Cu-foiled side)
No. 2665—3/8
Voltage gain, VG - dB
Total harmonic distortion, THD - %
Output power, Po - W
Input voltage, Vi - mV
Output power,Po - W
Frequency, f - Hz Output power, Po - W Output power, Po - W Frequency, f - Hz
STK4142II
Quiescent current, Icco - mA
Total harmonic distortion, THD - %
Operating substrate temperature, Tc - °C
No. 2665—4/8
Neutral voltage, VN - mV
Voltage gain, VG - dB
IC power dissipation, Pd - W
Quiescent current, Icco - mA
Output power, Po - W
Supply voltage, VCC - VFrequency, f - Hz Neutral voltage, VN - mV IC power dissipation, Pd - W Output power, Po - W Supply voltage, VCC - V Output power, Po - W
STK4142II
No. 2665—5/8
STK4142II
Description of External Parts
C1, C2
Input filter capacitors • A filter formed with R3 or R4 can be used to reduce noise at high frequencies. Input coupling capacitors • Used to block DC current. When thereactance 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. • To reduce the pop noise at the time of application of power, it is effective to increase C3, C4 that fix the time constant on the input side and to decrease C5, C6 on the NF side. NF capacitors • These capacitors...
Thick Film Hybrid IC
STK4142II 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 output 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 mutingcircuit 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
[STK4142II]
Specifications
Maximum Ratings at Ta = 25°C
Parameter Maximum supply voltage Thermal resistance Junction Temperature Operating substrate temperature Storage temperature Available time for loadshort-circuit Symbol VCC max θj-c Tj Tc Tstg ts VCC = ±26V, RL = 8Ω, f = 50Hz, Po = 25W Conditions Ratings ±39 2.6 150 125 −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 VCC RL Conditions Ratings ±26 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 / 9068MO, TS No. 2665—1/8
STK4142II
Operating Characteristics at Ta = 25°C, VCC = ±26V, RL = 8Ω, Rg = 600Ω, VG = 40dB,
RL : 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 voltageTHD fL, fH ri VNO VN VM Conditions VCC = ±31V THD = 0.4%, f = 20Hz to 20kHz VCC = ±22V, THD = 1.0%, RL = 4Ω, f = 1kHz Po = 1.0W, f = 1kHz +0 Po = 1.0W, dB –3 Po = 1.0W, f = 1kHz VCC = ±31V, Rg = 10kΩ VCC = ±31V –70 –2 0 –5 20 to 50k 55 1.2 +70 –10 min 20 25 25 0.3 typ 40 max 100 Unit mA W W % Hz kΩ mVrms mV V
Notes.
For power supply at the time of test, use a constant-voltage power supplyunless 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. 2665—2/8
STK4142II
Sample Application Circuit : 25W min 2-channel AF power amplifier
Sample Printed Circuit Pattern for Application Circuit (Cu-foiled side)
No. 2665—3/8
Voltage gain, VG - dB
Total harmonic distortion, THD - %
Output power, Po - W
Input voltage, Vi - mV
Output power,Po - W
Frequency, f - Hz Output power, Po - W Output power, Po - W Frequency, f - Hz
STK4142II
Quiescent current, Icco - mA
Total harmonic distortion, THD - %
Operating substrate temperature, Tc - °C
No. 2665—4/8
Neutral voltage, VN - mV
Voltage gain, VG - dB
IC power dissipation, Pd - W
Quiescent current, Icco - mA
Output power, Po - W
Supply voltage, VCC - VFrequency, f - Hz Neutral voltage, VN - mV IC power dissipation, Pd - W Output power, Po - W Supply voltage, VCC - V Output power, Po - W
STK4142II
No. 2665—5/8
STK4142II
Description of External Parts
C1, C2
Input filter capacitors • A filter formed with R3 or R4 can be used to reduce noise at high frequencies. Input coupling capacitors • Used to block DC current. When thereactance 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. • To reduce the pop noise at the time of application of power, it is effective to increase C3, C4 that fix the time constant on the input side and to decrease C5, C6 on the NF side. NF capacitors • These capacitors...
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