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PDF MAX9595 Data sheet ( Hoja de datos )
| Número de pieza | MAX9595 | |
| Descripción | Audio/Video Switch | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX9595 (archivo pdf) en la parte inferior de esta página. Total 28 Páginas | ||
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19-3946; Rev 0; 1/06
EVAALVUAAILTAIOBNLEKIT
Audio/Video Switch for Dual SCART Connector
General Description
www.dTathaeshMeeAt4Xu9.c5o9m5 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 MAX9595 provides programmable gain control from
+5dB to +7dB in 1dB steps for red, green, and blue com-
ponent 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 lowpass filters with a
cutoff frequency of 6MHz. The MAX9595 TV audio chan-
nel features clickless switching and programmable vol-
ume 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 MAX9595 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 MAX9595 is available in a compact 48-pin thin
QFN package and is specified over the 0°C to +70°C
commercial temperature range.
Satellite Set-Top Boxes
Cable Set-Top Boxes
TVs
VCRs
DVDs
Applications
†Purchase of I2C components from Maxim Integrated Products,
Inc. or one of its sublicensed Associated Companies, conveys
a license under the Philips I2C Patent Rights to use these com-
ponents in an I2C system, provided that the system conforms to
the I2C Standard Specification as defined by Philips.
Features
♦ Video Outputs Drive 2VP-P into 150Ω
♦ Audio Outputs Drive 3VRMS into 10kΩ
♦ Clickless, Popless Audio Gain Control and
Switching
♦ Interrupt Output Detects Changes on Slow
Switching Input
♦ 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
-50dB at 27MHz
♦ Single-Ended Audio 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
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX9595CTM+
0°C to +70°C
48 Thin QFN-EP*
(7mm x 7mm)
T4877-6
*EP = Exposed paddle.
+Denotes lead-free package.
Pin Configuration and Typical Application Circuit appear at
end of data sheet.
System Block Diagram appears at end of data sheet.
________________________________________________________________ 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.
1 page  
Audio/Video Switch for Dual SCART Connector
ELECTRICAL CHARACTERISTICS (continued)
www.d(aVta12sh=ee1t42uV.,cVomVID = VAUD = 5V; 0.1µF X5R capacitor in parallel with a 10µF aluminum electrolytic capacitor from VAUD to GNDAUD,
V12 to GNDAUD, and VVID to GNDVID; SET = 100kΩ nominal, RLOAD = 150Ω, TA = 0°C to +70°C, unless otherwise noted. Typical
values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
DIGITAL INTERFACE: SDA and SCL (Note 4)
Low-Level Input Voltage
High-Level Input Voltage
VIL
VIH
Hysteresis of Schmitt Trigger
Input
SDA Low-Level Output Voltage
Output Fall Time for SDA Line
VOL ISINK = 3mA
ISINK = 6mA
400pF bus load
Spike Suppression
Input Current
Input Capacitance
SCL Clock Frequency
Hold Time
Low Period of SCL Clock
High Period of SCL Clock
tHD,STA
tLow
tHIGH
Setup Time for a Repeated Start
Condition
tSU,STA
Data Hold Time
Data Setup Time
Setup Time for Stop Condition
tHD,DAT
tSU,DAT
tSU,STO
Bus Free Time Between a Stop
and Start
tBUF
OTHER DIGITAL PINS (Note 4)
DEV_ADDR Low Level
DEV_ADDR High Level
INTERRUPT_OUT Low Voltage
INTERRUPT_OUT sinking 1mA
INTERRUPT_OUT High Leakage
Current
VINTERRUPT_OUT = 5V
SLOW SWITCHING SECTION (Note 4)
Input Low Level
Input Medium Level
Input High Level
Input Current
MIN TYP MAX UNIT
0 0.8 V
2.6 V
0.2 V
0.4
V
0.6
250 ns
50 ns
-10 +10 µA
5 pF
0 400 kHz
0.6 µs
1.3 µs
0.6 µs
0.6 µs
0 0.9 µs
100 ns
0.6 µs
1.3 µs
0.8
2.6
0.15 0.4
1 10
V
V
V
µA
0 2V
4.5 7.0 V
9.5 V12 V
50 100 µA
_______________________________________________________________________________________ 5
5 Page 
Audio/Video Switch for Dual SCART Connector
Fast switching consists of two inputs from the encoder
www.datnadsheVeCt4Ru.,coamnd one output to the TV to insert an on-
screen display (OSD). Fast switching is used to route
video signals from the VCR or from the encoder to the
TV. In addition, the fast-switching output can be config-
ured to a high or low voltage. Fast switching is con-
trolled through the I2C interface.
The digital block contains the 2-wire interface circuitry,
control, and status registers. The MAX9595 can be
configured through an I2C-compatible interface.
DEV_ADDR sets the I2C-compatible address.
SCART Video Switching
The MAX9595 switches video signals between an MPEG
decoder, TV SCART, and VCR SCART. The video switch
includes reconstruction filters, multiplexed video ampli-
fiers, and a Y-C mixer driver for an RF modulator. See
Figure 1 for the functional diagram of the video section.
While the SCART connector supports RGB, S-video, and
composite video formats, RGB, and S-video typically
share a bidirectional set of SCART connector pins.
TV_R/C_IN
TV_Y/CVBS_IN
VCR_B_IN
VCR_G_IN
VCR_R/C_IN
VCRIN_FS
VCR_Y/CVBS_IN
ENC_Y/CVBS_IN
ENC_R/C_IN
ENC_G_IN
ENC_B_IN
ENC_Y_IN
ENCIN_FS
ENC_C_IN
CLAMP/BIAS
CLAMP
CLAMP
CLAMP
CLAMP/BIAS
0.7V
CLAMP
CLAMP
CLAMP/BIAS
CLAMP
CLAMP
CLAMP
0.7V
BIAS
BIAS
TV_SS
VCR_SS
MAX9595
FILTER
0V
5V
2kΩ
MIXER
2kΩ
V12
SW/MONITOR
FILTER
x2 VCR_Y/CVBS_OUT
FILTER
x2
PULLDOWN
VCRRCOUT
N
VCR_R/C_OUT
FILTER
VGA
5dB, 6dB, OR 7dB
PULLDOWN
TVRCOUT
N
TV_R/C_OUT
FILTER
VGA
5dB, 6dB, OR 7dB
TV_G_OUT
FILTER
VGA
5dB, 6dB, OR 7dB
TV_B_OUT
x2 TV_Y/CVBS_OUT
x1 TVOUT_FS
x2 RF_CVBS_OUT
INTERRUPT_OUT
Figure 1. MAX9595 Video Section Functional Diagram
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet MAX9595.PDF ] | |
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