Fairchild FAN7005M 200mw stereo power amplifier with shutdown Datasheet

www.fairchildsemi.com
FAN7005
200mW Stereo Power Amplifier with Shutdown
Features
Description
• 200mW and 300mW Power Per Each Channel into 8Ω
Load with Less Than 0.3% and 10% THD+N,
Respectively
• Low Shutdown Current : 0.1µA(Typ.)
• No Bootstrap Capacitors or Snubber Circuits are
Necessary
• Stable Unity-Gain
• Guaranteed Stability Under No Load Condition
• External Gain Configuration Capability
• Thermal Shutdown Protection Circuitry
• Pop Reduction Circuit
• 8MSOP Surface Mount Packaging
The FAN7005 is a dual, fully differential audio power amplifier delivering 200mW(typ.) of continuous power into an 8Ω
load. When driving 200mW into an 8Ω load from a 5V
power supply, the FAN7005 has less than 0.3% of THD+N
over the entire audible frequency range. To reduce the power
consumption in portable applications, the FAN7005 provides
a shutdown capability. In shutdown condition, current consumption is reduced to less than 2µA. The FAN7005 is
designed specifically to provide high quality output power
with a minimal amount of external components using surface
mount packaging. Since the additional snubber circuits or
bootstrap capacitors are not needed, the FAN7005 is well
suited for portable systems and other hand-held devices.
Typical Applications
• PDA
• MP3/CDP
• Portable Audio System
8MSOP
1
8SOP
1
Internal Block Diagram
VDD
6
VDD
8
RIN 8
7 ROUT
RIN 2
1 ROUT
20kΩ
20kΩ
SDH 3
Bias
100kΩ
SDH 5
VDD/2
BP 1
Bias
100kΩ
VDD/2
BP 3
100kΩ
100kΩ
20kΩ
20kΩ
5 LOUT
LIN 4
2
GND
FAN7005MU(8MSOP)
7 LOUT
LIN 6
4
GND
FAN7005M(8SOP)
Rev. 1.0.0
©2002 Fairchild Semiconductor Corporation
FAN7005
Pin Assignments
RIN ROUT VDD LOUT
8
7
6
VDD LOUT LIN SDH
8
5
F
005
YWW
1
2
3
7
5
YWW
7005
1
4
6
2
3
4
BP GND SDH LIN
ROUT RIN BP GND
FAN7005MU(8MSOP)
FAN7005M(8SOP)
Y ; Yearly Code
WW ; Weekly Code
Pin Definitions
Pin Number
( ) : 8SOP
Pin Name
Pin Function Description
1(3)
BP
2(4)
GND
Ground Connection for Circuitry
Tap to Voltage Divider for Internal a Half Supply Bias
3(5)
SDH
Shutdown all Amplifier, Hold High to Shutdown, Hold Low for Normal
Operation
4(6)
LIN
Signal Input Left-Channel
5(7)
LOUT
Output Left-Channel
6(8)
VDD
Supply Voltage Input
7(1)
ROUT
Output Right-Channel
8(2)
RIN
Signal Input Right-Channel
Absolute Maximum Ratings (Note2)
Parameter
Symbol
Value
Unit
Remark
Maximum Supply Voltage
VDD
6.0
V
-
Storage Temperature
TSTG
-65 ~ +150
°C
-
PD
Internally Limited
W
-
Rthja
210
°C/W
8MSOP, Junction to Ambient
Power Dissipation (Note3)
Thermal Resistance (Note3)
Operating Ratings
Parameter
2
Symbol
Min.
Typ.
Max.
Unit
Operating Supply Voltage
VDD
2.7
-
5.5
V
Operating Temperature
TOPR
-40
-
+85
°C
FAN7005
Electrical Characteristics (Notes1,2)
(Ta = 25°C, unless otherwise specified)
Parameter
Symbol
Conditions
Min.
Typ. Max. Unit
VDD = 5.0V, UNLESS OTHERWISE SPECIFIED
Quiescent Power Supply Current
Shutdown Current
Output Offset Voltage
Output Power
IDD
No Input, No Load
ISD
VSD=VDD
VOFF
PO
Total Harmonic Distortion+Noise
THD+N
Power Supply Rejection Ratio
PSRR
VIN=0V
-
2.2
5.0
mA
-
0.1
2.0
µA
-25
0
25
mV
THD=0.3% (Max.),
f=1kHz
RL=8Ω
125
200
-
mW
RL=32Ω
-
85
-
mW
THD=10% (Max.),
f=1kHz
RL=8Ω
-
300
-
mW
RL=32Ω
-
110
-
mW
-
0.04
-
%
RL=32Ω, Po=75mWrms, f=1kHz
-
0.015
-
%
CB=1µF, VRIPPLE=250mVrms, f=1kHz
-
50
-
dB
-
1.8
-
mA
RL=8Ω, Po=125mWrms, f=1kHz
VDD = 3.0V, UNLESS OTHERWISE SPECIFIED
Quiescent Power Supply Current
Shutdown Current
Output Offset Voltage
Output Power
IDD
No Input, No Load
ISD
VSD=VDD
VOFF
PO
Total Harmonic Distortion+Noise
THD+N
Power Supply Rejection Ratio
PSRR
VIN=0V
-
-
2.0
µA
-25
0
25
mV
THD=0.3% (Max.),
f=1kHz
RL=8Ω
-
70
-
mW
RL=32Ω
-
30
-
mW
THD=10% (Max.),
f=1kHz,
RL=8Ω
-
95
-
mW
-
35
-
mW
RL=8Ω, Po=70mWrms, f=1kHz
RL=32Ω
-
0.05
-
%
RL=32Ω, Po=25mWrms, f=1kHz
-
0.02
-
%
CB=1µF, VRIPPLE=200mVrms, f=1kHz
-
50
-
dB
Note:
1. All voltages are measured with respect to the ground pin, unless otherwise specified.
2. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate
conditions for which the device is functional, but do not guarantee specific performance limits. Electrical Characteristics state
DC and AC electrical specifications under particular test conditions which guarantee specific performance limits. This
assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is
given, however, the typical value is a good indication of device performance.
3. The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, Rthja and the ambient
temperature TA. The maximum allowable power dissipation is PDMAX = (TJMAX -TA)/Rthja. For the FAN7005, TJMAX =
150°C, and the typical junction-to-ambient thermal resistance, when board mounted, is 210°C/W for the 8MSOP Package.
3
FAN7005
Performance Characteristics
Table of Graphs
Figure
THD+N, Total Harmonic Distortion plus Noise
Power Dissipation
Output Power
THD+N, Total Harmonic Distortion plus Noise
7,8,9,10,11,12
PSRR, Power Supply Rejection Ratio
13,14
Cross Talk
Frequency
15
Output Level
16,17,18,19,20
Noise Floor
21
Supply Current
Output Power
22
Supply Voltage
Dropout Voltage
4
1,2,3,4,5,6
24,25
26,27
30
Supply Current
Shutdown Voltage
23
Output Power
Load Resistance
28,29
Power Dissipation
Ambient Temperature
31
FAN7005
Typical Performance Characteristics
10
10
VDD=5V
RL=16Ω
Av=-1
BW < 80kHz
VDD=5V
RL=8Ω
Av=-1
BW < 80kHz
1
THD + N (%)
THD + N (%)
1
f = 20kHz
0.1
f = 20kHz
0.1
f = 1kHz
f = 1kHz
0.01
0.01
0.001
10m
0.1
0.5
0.001
10m
0.1
Figure 1. THD+N vs. Output Power
Figure 2. THD+N vs. Output Power
10
10
VDD=5V
RL=32Ω
Av=-1
BW < 80kHz
VDD=3V
RL=8Ω
Av=-1
BW < 80kHz
1
1
THD + N (%)
THD + N (%)
0.3
Output Power (W)
Output Power (W)
0.1
f = 20kHz
f = 20kHz
0.1
f = 1kHz
f = 1kHz
0.01
0.01
0.001
10m
50m
0.1
0.001
10m
0.1
Figure 3. THD+N vs. Output Power
Figure 4. THD+N vs. Output Power
10
10
VDD=3V
RL=32Ω
Av=-1
BW < 80kHz
VDD=3V
RL=16Ω
Av=-1
BW < 80kHz
1
0.1
THD + N (%)
1
THD + N (%)
0.2
Output Power (W)
Output Power (W)
f = 20kHz
f = 1kHz
f = 1kHz
0.01
0.01
0.001
10m
f = 20kHz
0.1
50m
Output Power (W)
Figure 5. THD+N vs. Output Power
0.1
0.001
10m
20m
30m
40m
50m
Output Power (W )
Figure 6. THD+N vs. Output Power
5
FAN7005
Typical Performance Characteristics (Continued)
10
10
VDD=5V
RL=8Ω
Po=200mW
BW < 80kHz
1
THD + N (%)
THD + N (%)
1
Av = -5
Av = -2
0.1
Av = -1
Av = -5
Av = -2
0.1
Av = -1
0.01
0.001
VDD=5V
RL=16Ω
Po=120mW
BW < 80kHz
0.01
20
50
100
200
500
1k
2k
5k
10k
20k
0.001
20
50
100
200
Frequency (Hz)
Figure 7. THD+N vs. Frequency
THD + N (%)
THD + N (%)
Av = -5
Av = -1
0.01
50
100
200
500
1k
2k
5k
10k
20k
10k
20k
0.1
Av = -1
0.01
5k
10k
20k
0.001
20
50
100
200
500
1k
2k
Frequency (Hz)
Figure 10. THD+N vs. Frequency
10
10
VDD=3V
RL=16Ω
Po=50mW
BW < 80kHz
VDD=3V
RL=32Ω
Po=20mW
BW < 80kHz
1
Av = -5
THD + N (%)
THD + Naaaa (%)
20k
Av = -5
Frequency (Hz)
Av = -2
0.1
Av = -1
0.01
Av = -5
Av = -2
0.1
Av = -1
0.01
50
100
200
500
1k
2k
Frequency (Hz)
Figure 11. THD+N vs. Frequency
6
10k
Av = -2
Figure 9. THD+N vs. Frequency
0.001
20
5k
VDD=3V
RL=8Ω
Po=70mW
BW < 80kHz
1
Av = -2
1
2k
10
VDD=5V
RL=32Ω
Po=70mW
BW < 80kHz
0.1
0.001
1k
Figure 8. THD+N vs. Frequency
10
1
500
Frequency (Hz)
5k
10k
20k
0.001
20
50
100
200
500
1k
2k
Frequency (Hz)
Figure 12. THD+N vs. Frequency
5k
FAN7005
Typical Performance Characteristics (Continued)
0
0
VDD = 5V
Vripple = 250mVrms
RL = 8Ω
Vin = 0V (Input Grounded)
Av = -1
-10
-20
-40
-20
-30
CB = 1.0µF
PSRR (dB)
PSRR (dB)
-30
CB = 10µF
-50
-60
CB = 100µF
-40
-60
-70
-80
-80
-90
-90
-100
20
-100
20
100
200
500
1k
2k
5k
10k 20k
50k 100k
CB = 1.0µF
CB = 10µF
-50
-70
50
VDD = 3V
Vripple = 200mVrms
RL = 8Ω
Vin = 0V (Input Grounded)
Av = -1
-10
CB = 100µF
50
100
200
500
Frequency (Hz)
Figure 13. Power Supply Rejection Ratio
Left To Right
-80
Right To Left
-100
-120
-4
CO = 470µF
-8
CO = 1000µF
-12
VDD = 5V
RL = 8Ω
Av = -1
CB = 1.0µF
CIN = 10µF
RIN = RF =20kΩ
CO = 2200µF
50
100
200
500
1k
2k
5k
10k
-20
20
20k
50
100
200
500
Frequency (Hz)
0
0
-4
CO = 47µF
CO = 100µF
CO = 220µF
VDD = 5V
RL = 32Ω
Av = -1
CB = 1.0µF
CIN = 10µF
RIN = RF =20kΩ
CO = 470µF
-16
-20
50
100
200
500
1k
2k
5k
10k
20k
Frequency (Hz)
Figure 17. Output Level vs. Frequency
50k 100k
Output Level (dB)
+5
-12
2k
5k
10k
20k
50k 100k
Figure 16. Output Level vs. Frequency
+5
-8
1k
Frequency (Hz)
Figure 15. Cross Talk vs. Frequency
Output Level (dB)
50k 100k
CO = 220µF
-16
-140
20
10k 20k
0
-60
20
5k
+5
VDD = 5V
RL = 8Ω
Po = 200mW
0dB = 200mW
Av = -1
CB = 1.0µF
Output Level (dB)
Cross Talk (dB)
-40
2k
Figure 14. Power Supply Rejection Ratio
0
-20
1k
Frequency (Hz)
-4
CIN = 0.1µF
CIN = 0.22µF
-8
CIN = 0.47µF
-12
CIN = 1.0µF
VDD = 5V
RL = 8Ω
Av = -1
CB = 1.0µF
CO = 2200µF
RIN = RF =20kΩ
-16
-20
20
50
100
200
500
1k
2k
5k
10k
20k
50k 100k
Frequency (Hz)
Figure 18. Output Level vs. Frequency
7
FAN7005
+5
+5
0
0
Output Level (dB)
Output Level (dB)
Typical Performance Characteristics (Continued)
-4
-8
CIN = 0.1µF
CO = 470µF
-12
CIN = 1.0µF
CO = 470µF
-16
VDD = 5V
RL = 8Ω
Av = -1
CB = 1.0µF
RIN = RF =20kΩ
-20
20
50
100
200
500
1k
2k
5k
10k
20k
-4
CIN = 0.1µF
CO = 220µF
-8
CIN = 1.0µF
CO = 220µF
-12
VDD = 5V
RL = 32Ω
Av = -1
CB = 1.0µF
RIN = RF =20kΩ
-16
-20
20
50k 100k
50
100
200
500
Figure 19. Output
.
Level vs. Frequency
20k
50k 100k
Temp. = 25°C
2.0
Supply Current (mA)
Noise Floor (dB)
10k
Vin = 0V
-120
-140
1.5
1.0
0.5
0.0
-160
50
100
200
500
1k
2k
5k
10k
0
20k
1
2
Figure 21. Noise Floor
2.5
VDD=2.5V
6
200
RL=8Ω
Power Dissipation (mW)
1.5
5
Vin = 0V
VDD=5.0V
VDD=3.0V
4
Figure 22. Supply Current vs. Supply Voltage
Temp. = 25°C
2.0
3
Supply Voltage (V)
Frequency (Hz)
Supply Current (mA)
5k
2.5
VDD = 5V
RL = 8Ω
Vin = 0V
Av = -1
BW < 80kHz
-100
20
2k
Figure 20. Output
.
Level vs. Frequency
-60
-80
1k
Frequency (Hz)
Frequency (Hz)
1.0
0.5
150
RL=16Ω
100
VDD=5V
RL=32Ω
f = 1kHz
50
THD+N < 1.0%
Av = -1
BW < 80kHz
0.0
0
0
1
2
3
Shutdown Voltage (V)
4
Figure 23. Supply Current vs. Shutdown Voltage
8
5
0
50
100
150
200
250
Output Power (mW)
Figure 24. Power Dissipation vs. Output Power
300
FAN7005
Typical Performance Characteristics (Continued)
450
70
RL=8Ω
RL=8
50
40
RL=16Ω
RL=16
30
VDD = 3V
RL=32Ω
RL=32
20
f = 1KHz
1kHz
THD+N < 1.0%
Av == -1
-1
10
0
Av = -1
25
50
75
BW < 80kHz
10% THD+N
300
250
1% THD+N
200
150
0.1% THD+N
100
50
BW < 80KHz
80kHz
0
RL = 8Ω
350
Output Power (mW)
Power Dissipation (mW)
f = 1kHz
400
60
0
2.0
100
2.5
3.0
3.5
4.0
4.5
5.0
150
400
f = 1kHz
10% THD+N
Output Power (mW)
Output Power (mW)
VDD = 5V
f = 1kHz
Av = -1
BW < 80kHz
350
RL = 32Ω
Av = -1
BW < 80kHz
125
100
75
1% THD+N
50
300
250
10%
10%THD+N
THD+N
200
150
100
0.1% THD+N
25
1%
1%THD+N
THD+N
50
0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
0
6.0
8
16
24
32
40
48
56
64
Load Resistance (Ω)
Supply Voltage (V)
Figure 27. Output Power vs. Supply Voltage
Figure 28. Output Power vs. Load Resistance
120
600
80
10% THD+N
60
40
1% THD+N
20
8
16
24
32
40
48
56
Load Resistance (Ω)
Figure 29. Output Power vs. Load Resistance
64
RL=8Ω
SE Mode
Dropout Voltage (mV)
VDD ==3V
VDD
3V
f == 1kHz
1kHz
Av ==-1
-1
BW <<80kHz
BW
80kHz
100
Output Power (mW)
6.0
Figure 26. Output Power vs. Supply Voltage
Figure 25. Power Dissipation vs. Output Power
0
5.5
Supply Voltage (V)
Output Power (mW)
500
Top Side
400
300
200
Bottom Side
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Supply Voltage (V)
Figure 30. Drop Voltage vs. Supply Voltage
9
FAN7005
Typical Performance Characteristics (Continued)
0.7
Power Dissipation (W)
0.6
Pdmax=600mW(8MSOP)
0.5
0.4
0.3
0.2
0.1
0
0
25
50
75
100
Ambient Temperature (°C)
Figure 31. Power Derating Curve
10
125
150
FAN7005
Application Informations
Power Supply Bypassing
Selection of proper power supply bypassing is critical to obtaining lower noise as well as higher power supply rejection.
Capacitors of the largest possible size may help to increase immunity to supply noise. However, taking into account
economical design, attaching 10µF electrolytic capacitor or tantalum capacitor with 0.1µF ceramic capacitor as closely as
possible to the VDD pin is sufficient to obtain a good supply noise rejection.
Single Ended Mode of Operation
The FAN7005 offers SE(Single Ended) operation. SE mode is adequate for head-phone load. The output power of SE mode is
expressed as follows :
P
V P2
= --------------SE
8 ⋅ RL
(1)
To use the amplifier in SE mode, the output DC voltage must be blocked not to increase power consumption. Thus, the load is
tied to the output via the output DC blocking capacitor. Capacitor size can be chosen using above f-3dB equation. For example,
assuming the load impedance is 32Ω, a 248.8µF capacitor guarantees 20Hz signal transmission to the load without gain
reduction. Refer to the Typical Performance Characteristics curves.
Shutdown Function
In order to reduce power consumption while not in use, the FAN7005 contains a shutdown pin(pin#3 @8MSOP) to turn off the
amplifier’s bias circuitry externally. This shutdown feature turns the amplifier off when a logic high is placed on the
shutdown pin. The trigger point between a logic low and logic high level is typically half the supply voltage. It is best to switch
between ground and supply to provide maximum device performance. By switching the shutdown pin to the VDD, the
FAN7005’s supply current draw will be minimized in idle mode. While the device will be disabled with shutdown pin voltages
less than VDD, the idle current may be greater than the typical value of 0.1µA. In either case, the shutdown pin should be tied
to a defined voltage because leaving the shutdown pin floating may result in an unwanted shutdown. In many applications, a
micro controller or microprocessor output is used to control the shutdown circuitry, providing a quick, smooth transition into
shutdown. Another solution is to use a single pole, single throw switch in conjunction with an external pull up resistor.
When the switch is closed, the shutdown pin is connected to ground and enables the amplifier. If the switch is open, then the
external pull up resistor will disable the FAN7005. This scheme guarantees that the shutdown pin will not float, which will
prevent unwanted state changes.
Adaptive Q-Current Control Circuit
Among the different several kinds of analog amplifier, a class-AB satisfies moderate total harmonic distortion(THD) and
power efficiency. In general, distortion proportionally reduces to the quiescent current(Q-current) of the output stage, but
power efficiency is inversely proportional to it. To satisfy both needs, an adaptive Q-current control(AQC) technique is
proposed. The AQC circuit increases the Q-current with respect to the amount of output distortion, whereas it is not activated
when no input signal is applied and no output distortion is sensed.
Power Dissipation
Power dissipation is a major concern when using any power amplifier and must be thoroughly understood to ensure a successful design. Equation 2 states the maximum power dissipation point for a single-ended amplifier operating at a given supply
voltage and driving a specified output load.
P
2
V
DD = -------------------------DMAX
2
2⋅π ⋅R
L
(2)
Since the FAN7005 has two operational amplifiers in one package, the maximum internal power dissipation point is twice that
of the number which results from equation(2). Even with a large internal power dissipation, the FAN7005 does not require a
heatsink over a large range of ambient temperature. From equation(2), assuming a 5V power supply and an 8Ω load, the maximum power dissipation point is 158.8mW per amplifier. Thus the maximum package dissipation point is 316.6mW. The maximum power dissipation point obtained must not be greater than the power dissipation that results from equation(3) :
11
FAN7005
T JMAX – T A
P DMAX = ---------------------------------R thja
(3)
For package 8MSOP(FAN7005MU), Rthja=210°C/W, TJMAX=150°C for the FAN7005.
Depending on the ambient temperature, TA, of the system environment, equation(3) can be used to find the maximum internal
power dissipation supported by the IC packaging. If the result of equation(2) is greater than that of equation(3), then either the
supply voltage must be decreased, the load impedance increased or the TA reduced. For the typical application of a 5V power
supply, with an 8Ω load, the maximum ambient temperature possible without violating the maximum junction temperature is
approximately 83.5°C provided that device operation is around the maximum power dissipation point. Power dissipation is a
function of output power and thus, if typical operation is not around the maximum power dissipation point, the ambient
temperature may be increased accordingly. Refer to the Typical Performance Characteristics curves for power dissipation
information for lower output powers.
Proper Selection of External Components
Selection of external components when an using integrated power amplifier is critical for optimizing device and system
performance. While the FAN7005 is tolerant of external component combinations, consideration must be given to component
values to maximize overall system quality. The FAN7005 has a stable unity gain and this gives a designer maximum system
flexibility. The FAN7005 should be used in low gain configurations to minimize THD+N values and maximize the signal to
noise ratio. Low gain configurations require large input signals to obtain a given output power. Input signals equal to or greater
than 1Vrms are available from sources such as audio codecs. Besides gain, one of the major considerations is the closed loop
bandwidth of the amplifier. To a large extent, the bandwidth is dictated by the choice of external components shown in the
Typical Application Circuit. Both the input coupling capacitor, CI, and the output coupling capacitor, CO, form first order
high pass filters which limit low frequency response. These values should be chosen based on required frequency response for
a few distinct responses.
Selection of Input and Output Capacitor Size
Large input and output capacitors are both expensive and space hungry for portable designs. Clearly a certain sized capacitor is
needed to couple in low frequencies without severe attenuation. But in many cases the speakers used in portable systems,
whether internal or external, have little ability to reproduce signals below 150Hz. Thus using large input and output capacitors
may not increase system performance. In addition to system cost and size, click and pop performance is affected by the size of
the input coupling capacitor, CI. A larger input coupling capacitor requires more charge to reach its quiescent DC voltage
(normally VDD/2). This charge comes from the output via the feedback and is apt to create pops upon device enable. Thus, by
minimizing the capacitor size based on the necessary low frequency response, turn on pops can be minimized. Besides
minimizing the input and output capacitor sizes, careful consideration should be paid to the bypass capacitor value. Bypass
capacitor, CB is the most critical component for minimizing turn on pops since it determines how fast the FAN7005 turns on.
The slower the FAN7005’s outputs ramp to their quiescent DC voltage(normally VDD/2), the smaller the turn on pop. Thus
choosing CB equal to 1.0µF along with a small value of CI(in the range of 0.1µF to 0.39µF), the shutdown function should be
virtually click less and peoples. While the device will function properly, (no oscillations or motor boating), with CB equal to
0.1µF, the device will be much more susceptible to turn on clicks and pops. Thus, a value of CB equal to 0.1µF or larger is
recommended in all but the most sensitive designs.
Using Low-ESR Capacitors, Co
Low-ESR capacitors are recommended throughout this applications section. A real(as opposed to ideal) capacitor can be
modeled simply as a resistor in series with an ideal capacitor. The voltage drop across this resistor minimizes the beneficial
effects of the capacitor in the circuit. The lower the equivalent value of this resistance the more the real capacitor behaves like
an ideal capacitor.
12
FAN7005
Typical Application Circuit
RFR 20kΩ
Audio
Input
Right
0.47µF 20kΩ
CIR
VDD
104
CS2
8
RIR
6
104 CSD
1
CIL
RIL
0.47µF
20kΩ
COR 330µF
20kΩ
RLR
8Ω/16Ω/32Ω
SDH
Bias
1µF
CB
Audio
Input
Left
VDD
3
CS1
ROUT
7
100kΩ
20kΩ
Rsd
10µF
RIN
2
4
BP
VDD/2
100kΩ
20kΩ
GND
330µF
5
LIN
LOUT
COL
RFL 20kΩ
Components
RLL
8Ω/16Ω/32Ω
Description
1. RIR, RIL
Inverting input resistance which sets the closed-loop gain in conduction with RF. This resistor
also forms a high pass filter with CI at fc=1/2πRICI.
2. CIR, CIL
Input coupling capacitor which blocks the dc voltage at the amplifier’s input terminals. Also
creates a high pass filter with RI at fc=1/2πRICI. Refer to the section, proper Selection of
External Components, for an explanation of how to determine the value of CI.
3. RFR, RFL
Feedback resistance which sets closed-loop gain in conduction with RI.
4. CS1, CS2
Supply bypass capacitor which provides power supply filtering. Refer to the Application
Information Section for proper placement and selection of the supply bypass capacitor.
5. CB
Bypass pin capacitor which provides half the supply voltage filtering. Refer to the section,
Proper Selection of External Components, for information concerning proper placement
and selection of CB.
6. COR, COL
Output coupling capacitor which blocks the dc voltage at the amplifier’s output. Forms a high
pass filter with RL at fo=1/2πRLCO.
13
FAN7005
Mechanical Dimensions
Package
Dimensions in millimeters
8MSOP
14
FAN7005
Mechanical Dimensions (Continued)
Package
Dimensions in millimeters
8SOP
MIN
#5
6.00 ±0.30
0.236 ±0.012
8°
0~
+0.10
0.15 -0.05
+0.004
0.006 -0.002
MAX0.10
MAX0.004
1.80
MAX
0.071
3.95 ±0.20
0.156 ±0.008
5.72
0.225
0.41 ±0.10
0.016 ±0.004
#4
1.27
0.050
#8
5.13
MAX
0.202
#1
4.92 ±0.20
0.194 ±0.008
(
0.56
)
0.022
1.55 ±0.20
0.061 ±0.008
0.1~0.25
0.004~0.001
0.50 ±0.20
0.020 ±0.008
15
FAN7005
Ordering Information
Device
Package
FAN7005MU
8MSOP
FAN7005M
8SOP
FAN7005MUX
8MSOP
FAN7005MX
8SOP
Operating Temperature
Packing
Tube
-40°C ~ +85°C
Tape&Reel
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
10/24/02 0.0m 001
Stock#DSxxxxxxxx
 2002 Fairchild Semiconductor Corporation
Similar pages