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AA8642 Datasheet PDF - Agamem Microelectronic

Part Number AA8642
Description Dual Video Amplifier
Manufacturers Agamem Microelectronic 
Logo Agamem Microelectronic Logo 

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AA8642 datasheet, circuit
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Agamem Microelectronics Inc.
AA8642
PRELIMINARY
Dual Video Amplifier with LPF
DESCRIPTION
AA8642 is a dual low pass filter video amplifier with 6db gain, 75output buffer and
SAG correction. The 75buffer is capable of driving two circuits. The SAG could
reduce the output coupling capacitor. It supports 3V and 5V operation voltage and
incorporates high performance 4-stage LPF which is ideal for removing DAC sampling
noise. The power saving circuit provides the power saving function. The IC is available
in 8-pin TSSOP (AA8642AP), 8-pin SOP (AA8642SP) and 8-pin DIP (AA8642PP)
package.
FEATURES
1. Composite video driver with 6dB gain
2. Support 3V and 5V operation voltage
3. Built-in high performance 4-stage LPF
4. Dual channels video amplifier
5. SAG correction function
6. A load sufficient for driving two circuits
7. Low operating current, 18mA typical
8. Internal voltage clamp circuit
9. AC-Couple or DC-Couple output
APPLICATION
VCR
Video Camera
TV
Video Player
AA8642 BLOCK DIAGRAM
Vin2 8
LPF
6.75MHZ
6dB
Amp
75Ω
Driver
Vcc
7
Ω750
2.0K
2.2K
Vin1 1
LPF
6.75MHZ
6dB
Amp
2.0K
75Ω
Driver
2.2K
2
Ω750
5 Vout2
6 Vsag2
4 Vout1
3 Vsag1
1 2007/10/15
AGAMEM MICROELECTRONICS INCOPERATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT
FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM
DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR
CIRCUIT DESRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE
RIGHTS OF OTHERS.

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AA8642 equivalent
www.DataSheet4U.com
Agamem Microelectronics Inc.
AA8642
PRELIMINARY
Dual Video Amplifier
APPLICATION CIRCUIT 1 – AC-Couple output
Vin1
75Ω
Vout1
Vout1
75Ω
75Ω
4.7uF
Gnd
22uF
100uF
1
Vin1
Vin2
2
Gnd
Vcc
3
Vsag1 Vsag2
4
Vout1 Vout2
4.7uF
1000pF
22uF
100uF
Vin2
75Ω
Vcc
100uF
Ω75 Vout2
75Ω
Vout2
MEASUREMENT CIRCUIT 2 – DC-Couple output
Vin1
75Ω
Vout1
Vout1
75Ω
75Ω
4.7uF
Gnd
1
Vin1
Vin2
2
Gnd
Vcc
3
Vsag1 Vsag2
4
Vout1 Vout2
4.7uF
1000pF
Vin2
75Ω
Vcc
100uF
Ω Vout2
75
75Ω
Vout2
5 2007/10/15
AGAMEM MICROELECTRONICS INCOPERATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT
FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM
DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR
CIRCUIT DESRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE
RIGHTS OF OTHERS.

5 Page
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Information Total 8 Pages
Download[ AA8642.PDF Datasheet ]

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