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FAN7031 데이터시트 PDF




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부품번호 FAN7031 기능
기능 2W Stereo Power Amplifier with Four Selectable Gain Setting and Headphone Drive
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FAN7031 데이터시트, 핀배열, 회로
www.fairchildsemi.com
FAN7031
2W Stereo Power Amplifier with Four Selectable
Gain Setting and Headphone Drive
Features
• 1.85WRMS and 2.45WRMS Power Per Each Channel Into
4Load With Less Than 1% and 10% THD+N,
Respectively
• Selectable Gain Via Internal Gain Control Circuit Which
Eliminates External Gain Setting Resistors : 6dB, 10.3dB,
15.6dB, 21.6dB(Select)
• Low Quiescent Current : Typical 5.5mA@5V
• Low Shutdown Current : Typical 0.04µA@5V
• Fully Differential Input, Which Immunes the Common
Mode Noise
• Stereo Headphone Drive
• Active Low Shutdown Logic
• Guaranteed Stability Under No Load Condition
• Thermally Enhanced Surface-Mount 20TSSOP-EP
Package
Description
The FAN7031 is a dual fully differential power amplifier in a
20-pin TSSOP-EP thermally enhanced package. When
delivering 1.85W of continuous RMS power into 4speaker
at 5V supply, the FAN7031 has less than 1% of THD+N over
the entire audible frequency range, 20Hz to 20kHz. To save
power consumption in the portable applications, the
FAN7031 provides shutdown function. Setting the shutdown
pin to ground level, the FAN7031 falls into shutdown mode
and consumes less than 4µA over all supply voltage range,
2.7V to 5.5V. Two gain setting pins(G0 and G1) control the
gain of the FAN7031. The gain is selectable to 6dB, 10dB,
15.6dB and 21.6dB. The FAN7031 provides the single-
ended(SE) operation by setting SE/BTL pin to above VDD/2.
Using SE/BTL pin and a mechanical switch which provides
at the headphone jack, SE mode and BTL mode are automat-
ically determined. Additional components such as resistors
for gain setting and bootstrap capacitors are not needed,
making the FAN7031 well suited for portable sound systems
and other hand-held sound equipment. Target applications
include notebook and desktop computers and portable audio
equipment.
20-TSSOP-EP
1
©2003 Fairchild Semiconductor Corporation
Rev. 1.0.1




FAN7031 pdf, 반도체, 판매, 대치품
FAN7031
Absolute Maximum Ratings
Parameter
Maximum Supply Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Junction Temperature
Thermal Resistance
(Junction to Ambient)
ESD Rating (Human Body Model)
Symbol
VDDmax
PD
TOPG
TSTG
TJ
Rthja
Value
6.0V
Internally Limited
-40 ~ +85
-65 ~ +150
150
30.4
112.5
2000
Note1 : Rthja was derived using a JEDEC multi layer and single layer.
Operating Ratings
Unit
V
W
°C
°C
°C
°C/W
V
Parameter
Power Supply Voltage
Symbol
VDD
Min
2.7
Typ
-
Remark
See Derating Curve
Multi Layer Board
Single Layer Board
Max Unit
5.5 V
4

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FAN7031 전자부품, 판매, 대치품
Performance Characteristics(Continued)
FAN7031
10
5
Single-ended mode
VDD=5V
RL=32ohm
2 Av=4.3dB
1
0.5
0.2 20kHz
0.1
1kHz
0.05
0.02 20Hz
0.01
100u
200u
500u 1m
2m
5m 10m 20m
50m
Output Power [W]
Figure 7. THD+N vs. Output Power
100m 200m
10
5
20kHz
21.6dB
BTL mode
VDD=5V
15.6dB
RL=4ohm
10.3dB
2 6dB
1
0.5
0.2
0.1
0.05 1kHz
0.02
0.01
10m
20m
6dB
10.3dB
15.6dB
21.6dB
50m
100m
200m
500m
Output Power [W]
Figure 8. THD+N vs. Gain
1
23
10
5
20kHz
21.6dB
15.6dB
2
10.3dB
6dB
1
0.5
0.2
0.1
0.05 1kHz
0.02
0.01
10m
20m
6dB
10.3dB
15.6dB
21.6dB
50m
100m
200m
500m
Output Power [W]
Figure 9. THD+N vs. Gain
BTL mode
VDD=3.3V
RL=4ohm
12
10
5
20kHz
21.6dB
15.6dB
2
10.3dB
6dB
1
0.5
0.2
0.1
0.05 1kHz
0.02
6dB
10.3dB
15.6dB
21.6dB
0.01
10m
20m
50m
100m
200m
Output Power [W]
Figure 10. THD+N vs. Gain
BTL mode
VDD=2.7V
RL=4ohm
500m
1
10
5 VDD=5V
2
Output power =1W
RL=4ohm
1
0.5
0.2
0.1
0.05
0.02
0.01
0.005
0.002
0.001
20
50 100 200
500 1k
2k
5k
Frequency [Hz]
Figure 11. THD+N vs. Frequency
10k 20k
10
5 VDD=3.3V
Output power = 500mW
2 RL=4ohm
1
0.5
0.2
0.1
0.05
0.02
0.01
0.005
0.002
0.001
20
50 100 200
500 1k
2k
5k
Frequency [Hz]
Figure 12. THD+N vs. Frequency
10k 20k
7

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