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www.fairchildsemi.com
FAN7005
200mW Stereo Power Amplifier with Shutdown
Features
• 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
Description
The FAN7005 is a dual, fully differential audio power ampli-
fier 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 con-
sumption 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
V
DD
6
RIN 8
20kΩ
V
DD
8
7 ROUT
RIN 2
20kΩ
1 ROUT
100kΩ
SDH 3
Bias
100kΩ
VDD/2
SDH 5
Bias
VDD/2
BP 1
100kΩ
20kΩ
BP 3
100kΩ
20kΩ
LIN 4
2
GND
5 LOUT
LIN 6
4
GND
7 LOUT
FAN7005MU(8MSOP)
FAN7005M(8SOP)
Rev. 1.0.0
©2002 Fairchild Semiconductor Corporation
FAN7005
Pin Assignments
RIN ROUT VDD LOUT
8
7
6
5
VDD LOUT LIN SDH
8
7
6
5
005
YWW
1
2
3
4
F
YWW
7005
2
3
4
1
BP GND SDH LIN
FAN7005MU(8MSOP)
ROUT RIN BP GND
FAN7005M(8SOP)
Y ; Yearly Code
WW ; Weekly Code
Pin Definitions
Pin Number
1(3)
2(4)
3(5)
4(6)
5(7)
6(8)
7(1)
8(2)
Pin Name
BP
GND
SDH
LIN
LOUT
VDD
ROUT
RIN
Pin Function Description
Tap to Voltage Divider for Internal a Half Supply Bias
Ground Connection for Circuitry
( ) : 8SOP
Shutdown all Amplifier, Hold High to Shutdown, Hold Low for Normal
Operation
Signal Input Left-Channel
Output Left-Channel
Supply Voltage Input
Output Right-Channel
Signal Input Right-Channel
Absolute Maximum Ratings
(Note2)
Parameter
Maximum Supply Voltage
Storage Temperature
Power Dissipation (Note3)
Thermal Resistance (Note3)
Symbol
V
DD
T
STG
P
D
Rthja
Value
6.0
-65 ~ +150
Internally Limited
210
Unit
V
°C
W
°C/W
Remark
-
-
-
8MSOP, Junction to Ambient
Operating Ratings
Parameter
Operating Supply Voltage
Operating Temperature
Symbol
V
DD
T
OPR
Min.
2.7
-40
Typ.
-
-
Max.
5.5
+85
Unit
V
°C
2
FAN7005
Electrical Characteristics
(Notes1,2)
(
Ta = 25°C,
unless otherwise specified)
Parameter
Quiescent Power Supply Current
Shutdown Current
Output Offset Voltage
Symbol
I
DD
I
SD
V
OFF
Conditions
No Input, No Load
V
SD
=V
DD
V
IN
=0V
THD=0.3% (Max.),
f=1kHz
THD=10% (Max.),
f=1kHz
R
L
=8Ω
R
L
=32Ω
R
L
=8Ω
R
L
=32Ω
Min.
-
-
-25
125
-
-
-
-
-
-
Typ. Max. Unit
2.2
0.1
0
200
85
300
110
0.04
0.015
50
5.0
2.0
25
-
-
-
-
-
-
-
mA
µA
mV
mW
mW
mW
mW
%
%
dB
V
DD
= 5.0V, UNLESS OTHERWISE SPECIFIED
Output Power
P
O
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
THD+N
PSRR
R
L
=8Ω, Po=125mWrms, f=1kHz
R
L
=32Ω, Po=75mWrms, f=1kHz
C
B
=1µF, V
RIPPLE
=250mVrms, f=1kHz
V
DD
= 3.0V, UNLESS OTHERWISE SPECIFIED
Quiescent Power Supply Current
Shutdown Current
Output Offset Voltage
I
DD
I
SD
V
OFF
No Input, No Load
V
SD
=V
DD
V
IN
=0V
THD=0.3% (Max.),
f=1kHz
THD=10% (Max.),
f=1kHz,
R
L
=8Ω
R
L
=32Ω
R
L
=8Ω
R
L
=32Ω
-
-
-25
-
-
-
-
-
-
-
1.8
-
0
70
30
95
35
0.05
0.02
50
-
2.0
25
-
-
-
-
-
-
-
mA
µA
mV
mW
mW
mW
mW
%
%
dB
Output Power
P
O
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
THD+N
PSRR
R
L
=8Ω, Po=70mWrms, f=1kHz
R
L
=32Ω, Po=25mWrms, f=1kHz
C
B
=1µF, V
RIPPLE
=200mVrms, f=1kHz
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 T
JMAX
, Rthja and the ambient
temperature T
A
. The maximum allowable power dissipation is P
DMAX
= (T
JMAX
-T
A
)/Rthja. For the FAN7005, T
JMAX
=
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
THD+N, Total Harmonic Distortion plus Noise
PSRR, Power Supply Rejection Ratio
Cross Talk
Output Level
Noise Floor
Supply Current
Output Power
Dropout Voltage
Supply Current
Output Power
Power Dissipation
Shutdown Voltage
Load Resistance
Ambient Temperature
Supply Voltage
Frequency
Output Power
1,2,3,4,5,6
24,25
7,8,9,10,11,12
13,14
15
16,17,18,19,20
21
22
26,27
30
23
28,29
31
4
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