MAX9656AEP+T Maxim Integrated Products, MAX9656AEP+T Datasheet

IC VIDEO SWIT DUAL SCART 20QSOP

MAX9656AEP+T

Manufacturer Part Number
MAX9656AEP+T
Description
IC VIDEO SWIT DUAL SCART 20QSOP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX9656AEP+T

Function
Video Switch
Circuit
2 x SCART
Voltage Supply Source
Single Supply
Voltage - Supply, Single/dual (±)
2.7 V ~ 3.6 V
Current - Supply
21mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
20-QSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX9655/MAX9656 dual SCART switches route
video signals between a set-top box decoder chip and
two external SCART connectors. Under the control of the
TV_SEL logic input, the MAX9655 selects whether the
CVBS and RGB signals from the encoder or the VCR
SCART are routed to the TV SCART. The CVBS signal
from the encoder is always routed to the VCR SCART.
The MAX9656 is similar to the MAX9655 except that
under the control of the VCR_SEL logic input, the
MAX9656 selects whether the CVBS signal from the
encoder or the TV SCART is routed to the VCR SCART.
The MAX9656 also features a low-power shutdown
mode, in which quiescent current falls to 35µA.
The incoming video signals must be AC-coupled to the
inputs, which have sync-tip clamps to set the internal
DC level. After the input stages, multiplexers select
which video signals are routed to the reconstruction fil-
ters and output amplifiers. The reconstruction filters are
optimized for standard-definition signals and typically
have ±1dB passband flatness out to 9.5MHz and 47dB
attenuation at 27MHz.
The amplifiers have 2V/V gain, and the outputs can be
DC-coupled to a 75Ω load, which is the equivalent of
two video loads, or AC-coupled to a 150Ω load.
19-4238; Rev 2; 11/08
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.
SCART Set-Top Boxes
________________________________________________________________ Maxim Integrated Products
General Description
UNKNOWN
BIAS
ENC_CVBS_IN
VCR_CVBS_IN
Applications
ENC_G_IN
VCR_G_IN
ENC_B_IN
ENC_R_IN
VCR_B_IN
VCR_R_IN
TV_SEL
TV_SEL
for Dual SCART Connectors
Low-Power Video Switches
0
0
1
0
0
1
1
1
V
CLAMPREF
DD
CLAMPREF
CLAMPREF
CLAMPREF
CLAMPREF
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
GND
0
♦ Dual SCART Support for Video Signals
♦ Supports CVBS Input from TV SCART (MAX9656)
♦ Reconstruction Filters with 9.5MHz Passband and
♦ Fixed Gain of 2V/V
♦ Input Sync-Tip Clamps
♦ 2.7V to 3.6V Single-Supply Operation
Note: All devices are specified over the -40°C to +125°C oper-
ating temperature range.
+ Denotes a lead-free/RoHS-compliant package.
Pin Configurations and Typical Application Circuits appear
at end of data sheet.
MAX9655AEE+
MAX9656AEP+
47dB Attenuation at 27MHz
MAX9655
PART
LPF
LPF
LPF
LPF
LPF
2V/V
2V/V
2V/V
2V/V
2V/V
TV_B_OUT
TV_G_OUT
TV_R_OUT
TV_CVBS_OUT
VCR_CVBS_OUT
300mV
PIN-PACKAGE
Ordering Information
16 QSOP
20 QSOP
Functional Diagram
RETURN SUPPORT
TV SCART CVBS
Features
Yes
No
1

Related parts for MAX9656AEP+T

MAX9656AEP+T Summary of contents

Page 1

... DC-coupled to a 75Ω load, which is the equivalent of two video loads, or AC-coupled to a 150Ω load. SCART Set-Top Boxes UNKNOWN BIAS ________________________________________________________________ Maxim Integrated Products 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. Low-Power Video Switches for Dual SCART Connectors ♦ ...

Page 2

Low-Power Video Switches for Dual SCART Connectors ABSOLUTE MAXIMUM RATINGS Supply Voltage V to GND ...........................................................-0.3V to +4V DD All Video and Logic Input Pins..................(GND - 0.3V) to +4V Duration of Output Short Circuit GND ........Continuous DD ...

Page 3

ELECTRICAL CHARACTERISTICS (continued 3.3V VCR_SEL = V SHDN DD GND DD noted. Typical values are +25°C.) (Note 1) A PARAMETER SYMBOL Output Short-Circuit Current Output Resistance Power-Supply Rejection ...

Page 4

Low-Power Video Switches for Dual SCART Connectors (V = 3.3V SHDN DD GND DD SMALL-SIGNAL GAIN vs. FREQUENCY 50mV IN P-P 5 NOTE: GAIN IS NORMALIZED TO 0dB 0 ...

Page 5

SHDN DD GND DD VIDEO PSRR vs. FREQUENCY 3.3V + 100mV DD P-P -10 -20 -30 -40 -50 -60 -70 -80 100k 1M FREQUENCY (Hz) DIFFERENTIAL ...

Page 6

Low-Power Video Switches for Dual SCART Connectors (V = 3.3V SHDN DD GND DD NTC-7 VIDEO TEST SIGNAL 10μs/div VIDEO SYNC-TIP CLAMP VOLTAGE vs. TEMPERATURE 0.40 0.38 0.36 0.34 0.32 0.30 0.28 ...

Page 7

PIN NAME MAX9655 MAX9656 1 2 ENC_B_IN 2 3 ENC_G_IN 3 4 ENC_R_IN 4 5 ENC_CVBS_IN 5 6 VCR_B_IN 6 7 VCR_G_IN 7 8 VCR_R_IN 8 9 VCR_CVBS_IN 9 11 GND 10 13 VCR_CVBS_OUT VCR SCART Composite Video Output. The ...

Page 8

Low-Power Video Switches for Dual SCART Connectors The incoming video signals can have any DC bias because the input sync-tip clamps restore the DC level. The output amplifiers have a gain of 2V/V. The MAX9655/MAX9656 operate from a single 3.3V ...

Page 9

Table 5. MAX9656 Input Circuit of Input as Determined by State of TV_SEL INPUT ENC_B_IN ENC_G_IN ENC_R_IN Sync-tip clamp ENC_CVBS_IN (VCR_SEL = 0) Bias TV_CVBS_IN (VCR_SEL = 0) VCR_B_IN VCR_G_IN VCR_R_IN VCR_CVBS_IN Note: VCR_SEL = X (don’t care), except where ...

Page 10

Low-Power Video Switches for Dual SCART Connectors 12V 0.1μF 7 10μF 4.7kΩ 8 DAC + 300kΩ 1 SDATA 12V 2 DEMSCLK 3 LRCK 5.1kΩ MCLK CS4334 + 5.1kΩ 10μF 10μF 4.7kΩ 5 DAC + 300kΩ 6 12V 10kΩ ...

Page 11

DAC + 300kΩ 1 SDATA 12V 2 DEMSCLK 3 LRCK 5.1kΩ MCLK CS4334 + 5.1kΩ 10μF 4.7kΩ 5 DAC + 300kΩ 6 12V 10kΩ 3.3V TV_SEL 10kΩ TV_SEL 2N3904 JU0 Figure 2. ...

Page 12

Low-Power Video Switches for Dual SCART Connectors Table 6. Quiescent and Average Power Consumption for MAX9655/MAX9656 POWER MEASUREMENTS CONSUMPTION (mW) Quiescent Power 69 Consumption 175 (MAX9655) Average Power Consumption 200 (MAX9656) Power Consumption The quiescent power consumption and average power ...

Page 13

MPEG DECODER TV_SEL GPIO ENC_B_IN B DAC 0.1μF 75Ω G DAC ENC_G_IN R DAC 0.1μF 75Ω CVBS ENC_R_IN DAC 0.1μF 75Ω ENC_CVBS_IN 0.1μF 75Ω VCR_B_IN 0.1μF 75Ω VCR SCART VCR_G_IN 0.1μF 75Ω VCR_R_IN 0.1μF 75Ω VCR_CVBS_IN 0.1μF 75Ω ______________________________________________________________________________________ Low-Power ...

Page 14

Low-Power Video Switches for Dual SCART Connectors MPEG DECODER GPIO GPIO 0.1μF 75Ω B DAC 0.1μF 75Ω G DAC R DAC 0.1μF 75Ω CVBS DAC 0.1μF 75Ω ENC_CVBS_IN 0.1μF 75Ω 0.1μF 75Ω VCR SCART 0.1μF 75Ω 0.1μF 75Ω VCR_CVBS_IN 0.1μF ...

Page 15

Low-Power Video Switches for Dual SCART Connectors TOP VIEW + ENC_B_IN ENC_G_IN 2 15 TV_SEL ENC_R_IN 3 14 TV_B_OUT MAX9655 ENC_CVBS_IN 4 13 TV_G_OUT VCR_B_IN 5 12 TV_R_OUT TV_CVBS_OUT VCR_G_IN 6 11 VCR_R_IN 7 10 VCR_CVBS_OUT ...

Page 16

Low-Power Video Switches for Dual SCART Connectors For the latest package outline information and land patterns www.maxim-ic.com/packages. PACKAGE TYPE 16 QSOP 20 QSOP 16 ______________________________________________________________________________________ Package Information PACKAGE CODE E16-4 E20-1 DOCUMENT NO. 21-0055 21-0055 ...

Page 17

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 17 © 2008 Maxim Integrated Products ...

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