FAN7000 [FAIRCHILD]
Low Power Amplifier; 低功耗放大器
| 型号： | FAN7000 |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | Low Power Amplifier |
| 文件： | 总10页 (文件大小：61K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
www.fairchildsemi.com
FAN7000D
Low Power Amplifier
Features
Description
• Low Quiescent Current
• High Power Supply Ripple Rejection
• Low Voltage Operation
The FAN7000D is a monolithic integrated circuit and
suitable dual amplifier for low power.
• A few of External Part Required
• Built in Power Save Switch & Mute Switch
10-SSOP-225
Typical Applications
• Portable Compact Disk Player (DISCMAN)
• Portable Mini Disk Player (MD)
• Disc-Man
1
• MP3 Player
• CD-ROM
• Other Potable Compact Disk Media
Fan Motor Drive
Ordering Information
Device
Package
Operating Temp.
-20°C ~ +75°C
-20°C ~ +75°C
FAN7000D
10-SSOP-225
FAN7000DTF 10-SSOP-225
Rev. 1.0.5
©2002 Fairchild Semiconductor Corporation
FAN7000D
Pin Assignments
MUTE
10
OUTA
9
GND
8
OUTB
7
VCC
6
FAN7000D
1
2
3
4
5
PS
INA
GND
INB
REF
Pin Definitions
Pin Number
Pin Name
PS
IN
Pin Function Description
1
2
Power Save Switch
Signal Input A
A
3
GND
IN
Signal Ground
Signal Input B
4
B
5
REF
Reference Voltage
Supply Voltage
Signal Output B
Power Ground
Signal Output A
Mute On Switch
6
V
CC
7
OUT
B
8
GND
OUT
9
A
10
MUTE
2
FAN7000D
Internal Block Diagram
MUTE
PS
1
POWER SAVE SWITCH CTL
MUTE CTL
10
9
8
OUTA
REF
INA
2
3
GND
REF
GND
OUTB
7
6
REF
INB
4
5
VCC
REF
REF
3
FAN7000D
Absolute Maximum Ratings (Ta = 25°C)
Parameter
Symbol
Value
4.5
Unit
V
Remark
Maximum Supply Voltage
Power Dissipation
Operating Temperature
Storage Temperature
-
Maximum Supply Voltage
Power Dissipation
V
CC
P
300
mW
°C
D
Operating Temperature
Storage Temperature
Thermal Resistance
T
OPR
-20 ~ +75
-55 ~ +125
150
T
°C
STG
T
ja
°C/W
Power Dissipation Curve
Power dissipation (mW)
300
150
Ambient temperature, Ta (°C)
25
75
125
Recommended Operating Conditions (Ta = 25°C)
Parameter
Symbol
Min.
1.8
16
Typ.
Max.
4.0
Unit
V
Operating Supply Voltage
Recommended Load
V
3.0
-
CC
R
32
Ω
L
4
FAN7000D
Electrical Characteristics (R = 16Ω, Rg = 600Ω, Ta = 25°C)
L
Parameter
Symbol
Conditions
= 2.4V
Min.
Typ. Max.
Unit
mA
mA
µA
Quiescent Current 1
Quiescent Current 2
Quiescent Current 3
I
I
I
V
V
V
-
-
-
5.5
1.0
-
10.0
2.0
CC1
CC2
CC3
CC
CC
CC
CC
= 4.5V, Mute = GND
= 4.5V, PS = GND
= 2.4V, f = 1kHz,
1.0
V
V
Close Loop Voltage Gain 1
Close Loop Voltage Gain 2
Channel Balance 1
G
G
30
32
34
34
dB
dB
dB
dB
%
VC1
VC1
= -10dBm
O
V
V
= 1.8V, f = 1kHz,
= -20dBm
CC
O
29
-
32
-
V
V
= 2.4V, f = 1kHz,
= -10dBm
CC
O
∆G
∆G
1.0
1.0
V1
V2
V
V
= 1.8V, f = 1kHz,
= -20dBm
-
-
-
CC
O
Channel Balance 2
V
P
= 2.0V, f = 1kHz,
= 1mW
CC
O
Total Harmonic Distortion
THD
RR
0.5
60
1.5
-
V
CC
= 1.8V, f = 100Hz,
Ripple Rejection Ratio
Rg = 1kΩ, V = -20dBm,
43
dB
R
BPF = 100Hz
V
= 2.4V, f = 100Hz,
-
CC
Rg = 1kΩ, V = -10dB
Crosstalk
CT
43
-
50
60
40
-
dB
µVrms
mW
dB
O
V
= 4.5V, Rg = 1kΩ,
CC
BPF = 20Hz ~ 20kHz
Output Noise Voltage
Output Power
V
100
-
NOISE
V
= 3.0V, f = 1kHz,
CC
THD = 10%
P
20
-
OUT
V
= 1.8V, f = 100Hz,
CC
PS = GND, V = -10dB
PS Attenuation Ratio
MUTE Attenuation Ratio
ATT
-80
-80
PS
IN
V
= 1.8V, f = 100Hz,
CC
MUTE = GND, V = -10dB
ATT
-
-
dB
MU
IN
PS ON Input Current
MUTE OFF Input Current
PS ON High Level
I
I
V
CC
V
CC
V
CC
V
CC
= 1.5V, V
= 1.5V, V
= 1.5V, V
= 1.5V, V
≥ 0.85V
≥ 0.85V
≥ 0.85V
≥ 0.85V
-
0.2
0.2
1.0
1.0
-
µA
µA
V
PSON
REF
REF
REF
REF
-
MOFF
V
0.5
0.5
0.65
0.65
HPS
MUTE OFF High Level
V
-
V
HMU
5
FAN7000D
Application Information
1. PS Block
This block diagram describes the power save switch circuits.
The drive block is controlled by PS pin, which can be derived from micro controller.
It controls bias of the internal circuits of FAN7000D, so that it makes FAN7000D operate when input voltage level reaches
high level.
2. Mute Block
The block diagram describes the mute on switch circuits.
The drive block is controlled by MUTE pin, which can be derived from micro controller.
When the pin of mute turns on, it makes reference voltage of internal circuits approximately 0V, so that it keeps the device of
FAN7000D off.
3. AMP Block
This block diagram describes the AMP block with resistances, which control gain of FAN7000D.
VOUT
--------------
The gain of FAN7000D is
40 32[dB]
VIN
Output voltage of FAN7000D can be 40 times as much as input voltage, so it eliminates the number of external circuits and
offers headphone input.
4. Popping Noise Reduction
If PS pin (Pin1 , Power save switch) connect the micro controller, the micro controller must follow the same sequence 1 in
order to reduce popping noise on mute mode.
PS on → Mute on → PS off → Mute operation → PS on → Mute off → Normal operation (Sequence 1) If PS connect
V , the micro controller follow the sequence 2.
CC
Mute on → Mute Operation → Mute off → Normal operation (Sequence 2)
6
FAN7000D
Test Circuits
I1
I10
1
4
1
2
2
PS_SW
MUTE_SW
1
2
3
10
MUT
E
3
3
PS
4
F
A
N
7
0
0
1
220uF
0.1uF
9
RL
16Ω
2
INA
OUTA
V1
V10
4.7Ω
8
Rg
1
GND
GND
RL
16Ω
4.7Ω
4
7
0
D
0.1uF
220uF
DC
2
INB
OUTB
RIPPLE
22uF
4.7uF
5
6
A
Rg
REF
Vcc
7
FAN7000D
Typical Application Circuits
ON
OFF
ON
PS_SW
1
2
3
10
MUT
E
PS
OFF
F
A
N
7
220uF
0.1uF
9
VR
L-ch
R-ch
INA
OUTA
4.7Ω
8
0
0
0
D
4.7uF
4.7uF
GND
GND
4.7Ω
VR
4
7
0.1uF
220uF
INB
OUTB
Sg1
22uF
4.7uF
Sg2
VDC
5
6
REF
Vcc
8
FAN7000D
Package Dimensions
10-SSOP-225
9
FAN7000D
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
7/16/02 0.0m 001
Stock#DSxxxxxxxx
2002 Fairchild Semiconductor Corporation
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