Ultralow Power Video Filter

with Power-Down

ADA4430-1

Rev. A

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FEATURES

1 dB flatness out to 8 MHz

50 dB rejection at 27 MHz

Ultralow power-down current: 0.1 μA typ

Low quiescent current: 1.85 mA typ

Excellent video specification

Differential gain: 0.25%

Differential phase: 0.10°

SAG correction

Allows use of small capacitors in ac-coupled outputs

Low supply voltage: 2.5 V to 6 V

Rail-to-rail output

High input-to-output isolation in disabled state

92 dB @ 1 MHz

Low input bias current: 0.5 μA

Small packaging: SC70

Wide operating temperature range: −40°C to +125°C

APPLICATIONS

Portable media players

Portable gaming consoles

Cell phones

Digital still cameras

Portable DVD players

Portable video cameras

PIN CONFIGURATION

2*R

2*R

2*R

x1

R

1

2

3

6

5

4

GND

SAG

PD

ADA4430-1

Figure 1.

6.5

6.0

5.5

5.0

4.5

4.0

3.5

3.0

11

FREQUENCY (MHz)

0

Figure 2. Frequency Response Flatness at Various Power Supplies

GENERAL DESCRIPTION

The ADA4430-1 is a fully integrated video reconstruction filter

that combines excellent video specifications with low power

consumption and an ultralow power disable, making it ideal

for portable video filtering applications. With 1 dB frequency

flatness out to 8 MHz and 50 dB rejection at 27 MHz, the

ADA4430-1 is ideal in SD video applications, including

NTSC and PAL.

The ADA4430-1 operates on single supplies as low as 2.5 V and

as high as 6 V while providing the dynamic range required by

the most demanding video systems.

The ADA4430-1 also provides an on-chip dc offset to avoid

clipping of the sync tips at the filter output, as well as SAG

correction that permits smaller capacitor values to be used in

applications with ac-coupled outputs.

The ADA4430-1 is available in a 6-lead SC70 package and is

rated to work in the extended automotive temperature range of

−40°C to +125°C.