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www.fairchildsemi.com
FAN7023
Features
1W CMOS Mono Power Amplifier
Description
The FAN7023 is a bridge connected audio power amplifier
capable of delivering 1W of continuous average power to an
8Ω load with less than 0.2%(THD) from a 5V power supply.
The FAN7023 requires few external components and
operates on low supply voltage from 2.2V to 5.5V. Since the
FAN7023 does not require output coupling capacitors,
bootstrap capacitors, or snubber networks, it is ideally suited
for low power portable systems that require minimum
volume and weight. The FAN7023 features an externally
controlled gain, low power consumption shutdown mode
(0.01uA,typ.). Additional FAN7023 features include thermal
shutdown protection, unity gain stability, and external gain
set.
8-MSOP
10-MLP
1
BOTTOM VIEW
• Continuous Average Power is 1.0W (8Ω)
• Low THD: Typical 0.2% @ 1kHz (5V)
• Do Not Need Output Coupling Capacitor or Bootstrap
Capacitor
• Low Shutdown Current: Typical 0.01µA
• Shutdown: High Active
• Built in TSD Circuit
Typical Applications
• Cellular Phone
• PDA
• Portable Audio Systems
1
8-SOP
1
Internal Block Diagram
4
3
IN-
VO1
5
IN+
20kΩ
20kΩ
2
BP
100kΩ
6
VDD
BIAS
100kΩ
VDD/2
VO2
8
1
SD
GND
7
Rev. 1.1.0
©2003 Fairchild Semiconductor Corporation
FAN7023
Pin Assignments
V
O2
8
GND
7
V
DD
6
V
O1
5
V
O2
10
9
8
7
6
1
2
3
4
5
SD
BP
GND
IN+
IN-
FAN7021
FAN7023
NC
V
DD
NC
V
O1
1
SD
2
BP
3
IN+
4
IN-
10-MLP
(BOTTOM VIEW)
Pin Definitions
Pin Number
1(1)
2(2)
3(4)
4(5)
5(6)
6(8)
7(3)
8(10)
Pin Name
SD
BP
IN+
IN-
V
O1
V
DD
GND
V
O2
Shutdown
Bypass
Input+
Input-
Power AMP Output1
Supply Voltage
Ground
Power AMP Output2
Pin Function Description
( ) : 10MLP
Absolute Maximum Ratings (Ta = 25°C)
Parameter
Maximum Supply Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Junction Temperature
Thermal Resistance
(Junction to Ambient)
Symbol
V
DD
P
D
T
OPR
T
STG
T
J
Rthja
Value
6.0
Internally Limited
-40 ~ +85
-65 ~ +150
150
190
166
50
°C/W
Unit
V
W
°C
°C
°C
8MSOP
10MLP, Single-Layer
10MLP, Multi-Layer
Remark
Recommended Operating Conditions (Ta = 25°C)
Parameter
Operating Supply Voltage
Symbol
V
DD
Min.
2.2
Typ.
-
Max.
5.5
Unit
V
2
FAN7023
Electrical Characteristics
(R
L
= 8Ω
, Ta = 25°C,
unless otherwise specified)
Parameter
Quiescent Power Supply Current
Shutdown Current
Output Offset Voltage
Output Power
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
Quiescent Power Supply Current
Shutdown Current
Output Offset Voltage
Output Power
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
Quiescent Power Supply Current
Shutdown Current
Output Offset Voltage
Output Power
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
Symbol
I
DD
I
SD
V
OS
P
O
THD+N
PSRR
I
DD
I
SD
V
OS
P
O
THD+N
PSRR
I
DD
I
SD
V
OS
P
O
THD+N
PSRR
Conditions
V
IN
= 0V,I
O
= 0A
V
SD
= V
DD
V
IN
= 0V
THD = 1% (Max.); f = 1kHz
P
O
= 0.25W
rms
,gain = 2, f =1kHz
V
DD
±250mVp, f = 1kHz
V
IN
= 0V,I
O
= 0A
V
SD
= V
DD
V
IN
= 0V
THD = 1% (Max.);f = 1kHz
P
O
= 0.25Wrms, gain =2, f = 1kHz
V
DD
±250mVp, f = 1kHz
V
IN
= 0V,I
O
= 0A
V
SD
= V
DD
V
IN
= 0V
THD = 1% (Max.);f = 1kHz
P
O
= 0.2Wrms, gain = 2, f = 1kHz
V
DD
±250mVp, f = 1kHz
Min.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Typ.
1.8
0.01
5
1
0.1
65
1.5
0.01
5
0.45
0.15
65
1.3
0.01
5
0.2
0.25
65
Max.
6
2.0
50
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Unit
mA
µA
mV
W
%
dB
mA
µA
mV
W
%
dB
mA
µA
mV
W
%
dB
V
DD
= 5.0V, UNLESS OTHERWISE SPECIFIED
V
DD
= 3.3V, UNLESS OTHERWISE SPECIFIED
V
DD
= 2.6V, UNLESS OTHERWISE SPECIFIED
3
FAN7023
Performance Characteristics
10
10
VDD=5V
RL=8
Ω
Power=1W
1
1
VDD=3.3V
RL=8
Ω
Power=450mW
THD [%]
THD [%]
100
1k
10k
0.1
0.1
0.01
0.01
1E-3
1E-3
100
1k
10k
Frequency [Hz]
Frequency [Hz]
Figure 1. THD+N vs. Frequency, V
DD
=5V
Figure 2. THD+N vs. Frequency, V
DD
=3.3V
10
1
VDD=2.6V
RL=8
Ω
Power=200mW
f=20 kHz
1
VDD=5V
RL=8
Ω
No Filter
THD [%]
0.1
THD [%]
f=1 kHz
0.1
f=20 Hz
0.01
1E-3
0.01
100
1k
10k
10m
100m
1
Frequency [Hz]
Output Power [W]
Figure 3. THD+N vs. Frequency, V
DD
=2.6V
Figure 4. THD+N vs. Output Power, V
DD
=5V
10
f=20 kHz
VDD=3.3V
RL=8
Ω
No Filter
10
f=20 kHz
VDD=2.6V
RL=8
Ω
No Filter
1
THD [%]
THD [%]
1
f=1 kHz
f=1 kHz
0.1
f=20 Hz
0.1
f=20 Hz
10m
100m
1
10m
100m
Output Power [W]
Output Power [W]
Figure 5. THD+N vs. Output Power, V
DD
=3.3V
Figure 6. THD+N vs. Output Power, V
DD
=2.6V
4
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