MAX9505 Maxim Integrated Products, MAX9505 Datasheet
MAX9505
Manufacturer Part Number
MAX9505
Description
DirectDrive Video Amplifier
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX9505.pdf
(16 pages)
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The MAX9505 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. An internal reconstruction
filter smoothes the steps and reduces the spikes on the
video signal from the video digital-to-analog converter
(DAC). The input of the MAX9505 can be directly con-
nected to the output of a DAC. The MAX9505 provides
a compact, integrated, and low-power solution.
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 negative power supply
to drive the sync below ground. The charge pump injects
so little noise into the video output that the picture is visi-
bly flawless.
The MAX9505 features an internal 1.7Ω analog switch
that interfaces with a 4-pole multimedia jack. This
switch allows one of the poles to be set as a video
input, a video output, or a microphone input.
The MAX9505 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.
19-3675; Rev 0; 5/05
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.
Mobile Phones/Smartphones
Space-Constrained, Low-Power Audio/Video
Portable Devices
Reconstruction Filter and Analog Switch
________________________________________________________________ Maxim Integrated Products
0 TO 50mV
General Description
0V
Applications
DirectDrive Video Amplifier with
VIDIN
S
OUT
BUFFER
MAX9505
LOWPASS
FILTER
♦ DC-Coupled Output
♦ Direct Connection to Video DAC
♦ Video Output Black Level Set to Ground
♦ Video Reconstruction Filter with 50dB
♦ 6dB Gain
♦ 1.7Ω R
♦ 10nA Shutdown Supply Current
♦ 2.7V to 3.6V Single-Supply Operation
*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.
REGULATOR
MAX9505EEE
MAX9505ETE
CHARGE
LINEAR
Attenuation at 27MHz
PUMP
AMP
6dB
PART*
ON
S
VIDOUT
IN
Analog Switch
0V
PIN-
PACKAGE
16 QSOP
16 TQFN
Ordering Information
-0.1V TO
+0.1V
PKG CODE
Block Diagram
T1633-4
E16-4
Features
TOP MARK
ACW
—
1