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FAN7000D
Low Power Amplifier
Features
* * * * * Low Quiescent Current High Power Supply Ripple Rejection Low Voltage Operation A few of External Part Required Built in Power Save Switch & Mute Switch
Description
The FAN7000D is a monolithic integrated circuit and suitable dual amplifier for low power.
10-SSOP-225
Typical Applications
* * * * * * Portable Compact Disk Player (DISCMAN) Portable Mini Disk Player (MD) Disc-Man MP3 Player CD-ROM Other Potable Compact Disk Media Fan Motor Drive
1
Ordering Information
Device FAN7000D FAN7000DTF Package 10-SSOP-225 10-SSOP-225 Operating Temp. -20C ~ +75C -20C ~ +75C
Rev. 1.0.5
(c)2002 Fairchild Semiconductor Corporation
FAN7000D
Pin Assignments
MUTE 10 OUTA 9 GND 8 OUTB 7 VCC 6
FAN7000D
1 PS
2 INA
3 GND
4 INB
5 REF
Pin Definitions
Pin Number 1 2 3 4 5 6 7 8 9 10 Pin Name PS INA GND INB REF VCC OUTB GND OUTA MUTE Power Save Switch Signal Input A Signal Ground Signal Input B Reference Voltage Supply Voltage Signal Output B Power Ground Signal Output A Mute On Switch Pin Function Description
2
FAN7000D
Internal Block Diagram
PS
1
POWER SAVE SWITCH CTL
MUTE CTL
10
MUTE
REF INA 2
9
OUTA
8 REF GND 3 GND
REF INB 4
7
OUTB
REF
5 REF
6
VCC
3
FAN7000D
Absolute Maximum Ratings (Ta = 25C)
Parameter Maximum Supply Voltage Power Dissipation Operating Temperature Storage Temperature Thermal Resistance Symbol VCC PD TOPR TSTG Tja Value 4.5 300 -20 ~ +75 -55 ~ +125 150 Unit V mW C C C/W Remark Maximum Supply Voltage Power Dissipation Operating Temperature Storage Temperature -
Power Dissipation Curve
Power dissipation (mW)
300
150
Ambient temperature, Ta (C) 25 75 125
Recommended Operating Conditions (Ta = 25C)
Parameter Operating Supply Voltage Recommended Load Symbol VCC RL Min. 1.8 16 Typ. 3.0 Max. 4.0 32 Unit V
4
FAN7000D
Electrical Characteristics (RL = 16, Rg = 600, Ta = 25C)
Parameter Quiescent Current 1 Quiescent Current 2 Quiescent Current 3 Close Loop Voltage Gain 1 Close Loop Voltage Gain 2 Channel Balance 1 Channel Balance 2 Total Harmonic Distortion Ripple Rejection Ratio Crosstalk Output Noise Voltage Output Power PS Attenuation Ratio MUTE Attenuation Ratio PS ON Input Current MUTE OFF Input Current PS ON High Level MUTE OFF High Level Symbol ICC1 ICC2 ICC3 GVC1 GVC1 Conditions VCC = 2.4V VCC = 4.5V, Mute = GND VCC = 4.5V, PS = GND VCC = 2.4V, f = 1kHz, VO = -10dBm VCC = 1.8V, f = 1kHz, VO = -20dBm VCC = 2.4V, f = 1kHz, VO = -10dBm VCC = 1.8V, f = 1kHz, VO = -20dBm VCC = 2.0V, f = 1kHz, PO = 1mW VCC = 1.8V, f = 100Hz, Rg = 1k, VR = -20dBm, BPF = 100Hz VCC = 2.4V, f = 100Hz, Rg = 1k, VO = -10dB VCC = 4.5V, Rg = 1k, BPF = 20Hz ~ 20kHz VCC = 3.0V, f = 1kHz, THD = 10% VCC = 1.8V, f = 100Hz, PS = GND, VIN = -10dB VCC = 1.8V, f = 100Hz, MUTE = GND, VIN = -10dB VCC = 1.5V, VREF 0.85V VCC = 1.5V, VREF 0.85V VCC = 1.5V, VREF 0.85V VCC = 1.5V, VREF 0.85V Min. 30 29 Typ. 5.5 1.0 32 32 0.5 60 50 60 40 0.2 0.2 0.65 0.65 100 -80 -80 1.0 1.0 Max. 10.0 2.0 1.0 34 34 1.0 1.0 1.5 43 43 20 0.5 0.5 dB dB Vrms mW dB dB A A V V Unit mA mA A dB dB dB dB %
GV1 GV2
THD RR CT VNOISE POUT ATTPS ATTMU IPSON IMOFF VHPS VHMU
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.
OUT The gain of FAN7000D is -------------- 40 32 [ dB ]
V V IN
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 VCC, the micro controller follow the sequence 2. Mute on Mute Operation Mute off Normal operation (Sequence 2)
6
FAN7000D
Test Circuits
I1
1
I10
1 2
PS_SW
2
1
4
10
MUTE_SW
4 0.1uF 3 220uF
3 1
PS
2
2
V1
Rg 1
INA
3
GND
4
2 22uF Rg
INB
F A N 7 0 0 0 D
MUT E
9
OUTA
4.7
V10
16
RL
8
GND
4.7 0.1uF 4.7uF
RL
16 220uF DC RIPPLE
7
OUTB
5
REF
6
Vcc
A
7
FAN7000D
Typical Application Circuits
ON
OFF
PS_SW
OFF
1
PS
10
2
VR INA
3
4.7uF 4.7uF
GND VR
4
Sg1 Sg2
22uF
INB
F A N 7 0 0 0 D
MUT E
0.1uF
ON 220uF
9
OUTA L-ch
4.7
8
GND
4.7 0.1uF 4.7uF
R-ch
7
OUTB
220uF
VDC
5
REF
6
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.
www.fairchildsemi.com 7/16/02 0.0m 001 Stock#DSxxxxxxxx 2002 Fairchild Semiconductor Corporation
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.

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