MAX9512_09 Datasheet, PDF (1/19 Pages) Maxim Integrated Products – Video Filter Amplifier with SmartSleep and Y/C Mixer Circuit

19-0535; Rev 2; 2/09
Video Filter Amplifier with SmartSleep
and Y/C Mixer Circuit
General Description
The MAX9512 video filter amplifier with SmartSleep and
Y/C mixer is ideal for portable media players (PMPs),
portable DVD players, and set-top boxes (STBs). The
inputs can be directly connected to the digital-to-analog
converter (DAC) outputs. The dual reconstruction filters
remove high-frequency signals above 6.75MHz. The
Y/C-to-CVBS mixer creates a composite video signal
from luma and chroma. The four amplifiers each have
6dB of gain. The outputs can be DC-coupled to a load of
75Ω, which is equivalent to two video loads, or AC-cou-
pled to a load of 150Ω.
The SmartSleep circuitry intelligently reduces power
consumption based on the presence of the input signal
and the output loads. When the MAX9512 does not
detect the presence of sync on luma, the supply cur-
rent is reduced to less than 7µA. The device only
enables a video amplifier when there is an active video
input signal and an attached load. The video amplifier
remains on while a load is connected. If the load is dis-
connected, the video amplifier is turned off.
The MAX9512 operates from a 2.7V to 3.6V single sup-
ply and is offered in a small, 16-pin TQFN (3mm x
3mm) package. The device is specified over the -40°C
to +125°C automotive temperature range.
Applications
Portable Media Players
(PMPs)
Portable DVD Players
Set-Top Boxes (STBs)
Portable Applications
Pin Configuration
TOP VIEW
12 11 10 9
V_DD 13
N.C. 14
SMARTSLEEP 15
MAX9512
8 GND
7 N.C.
6 SHDN
CIN 16 ₊
5 N.C.
1234
THIN QFN
(3mm x 3mm)
Features
♦ SmartSleep Feature Detects Input Signal and
Output Load Status to Reduce Power
Consumption
♦ Dual Standard-Definition Video Reconstruction
Filters with 6.75MHz Passband
♦ Luma and Chroma Inputs
♦ Y/C-to-CVBS Mixer
♦ Luma, Chroma, and Two Composite Outputs
♦ Supports Two Video Loads at Each Output
(DC-Coupled)
♦ 2.7V to 3.6V Single-Supply Operation
Ordering Information
PART
PIN-PACKAGE
TOP MARK
MAX9512ATE+
16 TQFN-EP*
(3mm x 3mm)
AEN
Note: All devices specified over the -40°C to +125°C operating
temperature range.
+Denotes lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Block Diagrams
BUFFER
CIN
LPF
LOAD SENSE
COUT
6dB
BUFFER
YIN
LPF
LOAD SENSE
6dB
YOUT
SMARTSLEEP
SHDN
ACTIVE VIDEO
DETECT
CONTROL
LOGIC
MAX9512
LOAD SENSE
6dB
CVBSOUT1
LOAD SENSE
6dB
CVBSOUT2
Block Diagrams continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.