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MAX4397 Datasheet(PDF) 1 Page - Maxim Integrated Products

Part # MAX4397
Description  Audio/Video Switch for Dual SCART Connectors
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX4397 Datasheet(HTML) 1 Page - Maxim Integrated Products

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General Description
The MAX4397 dual SCART switch matrix routes audio
and video signals between an MPEG encoder and two
external SCART connectors under I2C control, and
meets the requirements of EN50049-1, IEC 933-1,
Canal+, and BSkyB standards.
The video and audio channels feature input source
selection multiplexers, input buffers, and output buffers
for routing all inputs to selected outputs. The MAX4397D
audio encoder input is differential DC-coupled, while the
MAX4397S audio encoder input is single-ended AC-
coupled. Except for the MAX4397D’s audio encoder
input, all other inputs and outputs are AC-coupled with
internal DC-biasing set to predefined levels.
The MAX4397 provides programmable gain control from
+5dB to +7dB in 1dB steps for Red, Green, and Blue
component video signals. All other video outputs have a
fixed +6dB gain. Additional features include an internal
Luma and Chroma (Y/C) mixer that generates a
Composite video signal (CVBS) to supply an RF
modulator output, and internal video reconstruction low-
pass filters with passband ripple between -1dB and
+1dB from 100kHz to 5.5MHz. The MAX4397 TV audio
channel features clickless switching and programmable
volume control from -56dB to +6dB in 2dB steps. The
VCR audio output also has programmable gain for
-6dB, 0dB, or +6dB. The device also generates
monaural audio from left and right stereo inputs.
All audio drivers deliver a 3.0VRMS minimum output.
The MAX4397 operates with standard 5V and 12V
power supplies and supports slow-switching and fast-
switching signals. The I2C interface programs the gain
and volume control, and selects the input source
for routing.
The MAX4397 is available in a compact 48-pin thin QFN
package and is specified over the 0°C to +70°C com-
mercial temperature range.
Applications
Satellite Set-Top Boxes
Cable Set-Top Boxes
TVs
VCRs
DVDs
Features
♦ Video Outputs Drive 2VP-P into 150Ω
♦ Audio Outputs Drive 3VRMS into 10kΩ
♦ Clickless, Popless Audio Gain Control
and Switching
♦ AC-Coupled Video Inputs with Internal Clamp
and Bias
♦ DC-Coupled Video Outputs
♦ Composite Video Signal Created Internally from
Y/C Inputs
♦ Internal Video Reconstruction Filters Provide
-40dB at 27MHz
♦ Differential (MAX4397D) or Single-Ended
(MAX4397S) Audio Encoder Input
♦ Red/Chroma Switch for Bidirectional I/O
♦ I2C-Programmable RGB Gain from +5dB to +7dB
♦ I2C-Programmable Audio Gain Control from +6dB
to -56dB
♦ Meets EN50049-1, IEC 933-1, Canal+, and BSkyB
Requirements
Audio/Video Switch for Dual SCART Connectors
________________________________________________________________ Maxim Integrated Products
1
Ordering Information
19-3618; Rev 3; 5/07
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.
Pin Configuration and Typical Application Circuits appear at
end of data sheet.
System Block Diagram appears at end of data sheet.
EVALUATION
KIT
AVAILABLE
PART
TEMP
RANGE
PIN-PACKAGE
PKG
CODE
MAX4397DCTM
0°C to +70°C
48 Thin QFN-EP*
(7mm x 7mm)
T4877-6
MAX4397SCTM
0°C to +70°C
48 Thin QFN-EP*
(7mm x 7mm)
T4877-6
*EP = Exposed paddle.


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