MAX9503 Datasheet, PDF (1/13 Pages) Maxim Integrated Products – DirectDrive Video Amplifier with Reconstruction Filter

19-3676; Rev 0; 5/05
DirectDrive Video Amplifier with
Reconstruction Filter
General Description
The MAX9503 filters and amplifies standard-definition
video signals. Maxim’s DirectDrive™ technology elimi-
nates large output-coupling capacitors and sets the
video black level to ground. The input of the MAX9503
can be directly connected to the output of a video
digital-to-analog converter (DAC). The MAX9503 pro-
vides a compact, integrated, and low-power solution.
An internal reconstruction filter smoothes the steps and
reduces the spikes on the video signal from the DAC.
The reconstruction filter typically has 3dB attenuation at
9MHz and 50dB attenuation at 27MHz, and ±1dB pass-
band flatness to 5.5MHz.
Maxim’s DirectDrive uses an integrated charge pump
and a linear regulator to create a clean negative power
supply to drive the sync below ground. The charge
pump injects so little noise into the video output that the
picture is visibly flawless.
The MAX9503 is available with +6dB (MAX9503G) and
+12dB (MAX9503M) gains. The device operates from a
2.7V to 3.6V single supply and features a 10nA low-
power shutdown mode.
The MAX9503 is offered in space-saving 16-pin QSOP
and 16-pin TQFN packages and is specified over the
-40°C to +85°C extended temperature range.
Applications
Digital Still Cameras
Mobile Phones/Smartphones
Security Cameras
Portable Media Players
Space-Constrained, Low-Power Portable
Devices
Features
♦ DC-Coupled Output
♦ Direct Connection to Video DAC
♦ Video Output Black Level Set to Ground
♦ Video Reconstruction Filter with 50dB
Attenuation at 27MHz
♦ Preset Gain
6dB (MAX9503G)
12dB (MAX9503M)
♦ 10nA Shutdown Supply Current
♦ 2.7V to 3.6V Single-Supply Operation
Ordering Information
PART*
PIN-
PACKAGE
PKG CODE TOP MARK
MAX9503GEEE 16 QSOP
E16-4
—
MAX9503GETE 16 TQFN
T1633-4
ACU
MAX9503MEEE 16 QSOP
E16-4
—
MAX9503METE 16 TQFN
T1633-4
ACV
*All devices are specified over the -40°C to +85°C operating
temperature range.
Functional Diagram/Typical Operating Circuit and Pin
Configurations appear at end of data sheet.
Block Diagram
0 TO 50mV
0V
VIDIN
MAX9503
BUFFER
LOWPASS
FILTER ^AMP
0V
VIDOUT
-0.1V TO
+0.1V
LINEAR
REGULATOR
CHARGE
PUMP
MAX9503G: 6dB
MAX9503M: 12dB
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.