19-2925; Rev 1; 7/06
IT
TION K
VALUA
E
BLE
AVAILA
Audio/Video Switch for Three SCART
Connectors
General Description
Features
♦
Low -86dB Video Signal-to-Noise Ratio
♦
150Ω Driver on All Video Outputs, Including the
RF Modulator
♦
Full CVBS Loop-Through on AUX SCART
♦
Programmable Audio Gain Control of -56dB to
+6dB (TV Audio Outputs)
♦
Clickless Audio Switching (TV Audio Outputs)
♦
Programmable Clamp or Bias on Red/Chroma
Video Inputs
♦
Programmable Video Gain of +6dB, ±1dB on RGB
Outputs
♦
+5V and +12V Standard Supply Voltages
♦
27MHz -3dB Large-Signal Bandwidth on All Video
Drivers
♦
Supports Three SCART Connectors
MAX4399
The MAX4399 audio/video switch is ideal for digital set-
top box applications. The MAX4399 provides video and
audio routing from the MPEG decoder source to the TV,
VCR, and AUX SCART (peritelevision) connectors. In
addition, the TV audio channel features clickless
switching and programmable volume control from
-56dB to +6dB in 2dB steps. The device can mix an
auxiliary audio tone into the TV audio channel and can
mix the stereo audio signal into a mono audio signal.
The MAX4399 directly drives an external RF modulator
with a composite video with blanking and sound
(CVBS) signal created by an on-chip luma/chroma
(Y/C) mixer and external RLC trap filter. The MAX4399
features a fast-mode I
2
C-compatible 2-wire interface
allowing communication at data rates up to 400kbps.
The MAX4399 operates with standard +5V and +12V
single supplies and supports slow and fast switching.
All video and audio inputs are AC-coupled. The DC
biases of all input and output signals are set to pre-
defined levels. All video outputs, including the RF mod-
ulator, drive standard 150Ω loads. Red, green, and
blue (RGB) outputs feature a programmable gain of
+6dB ±1dB. All other video outputs have a fixed +6dB
gain. The VCR and AUX audio output gains are pro-
grammable for -6dB, 0dB, and +6dB.
The MAX4399 is available in a compact 68-pin thin
QFN package and is specified for the 0°C to +70°C
commercial temperature range. The MAX4399 evalua-
tion kit is available to help speed designs.
Ordering Information
PART
MAX4399CTK
TEMP RANGE PIN-PACKAGE PKG CODE
0°C to +70°C
68 Thin QFN
T6800-3
Typical Operating Circuit
VIDEO DIGITAL AUDIO
+5V
+12V
+5V
RGB
CVBS
S-VHS
RGB
R/L AUDIO
SLOW SWITCHING
FAST SWITCHING
CVBS
TV SCART
CONNECTOR
Applications
Satellite Receivers
Satellite Set-Top Boxes
Cable Set-Top Boxes
Terrestrial Set-Top Boxes
Game Consoles
TVs
Digital Television (DTV)
VCRs
SATELLITE DISH
STB
ENCODER
S-VHS
CVBS
R/L AUDIO
FAST SWITCHING
I
2
C-COMPATIBLE
2-WIRE INTERFACE
SCART
SWITCH
MATRIX
MAX4399
TONE INPUT
CVBS
S-VHS
MONO AUDIO
CHANNEL
3/4 RF
MODULATOR
SUBCARRIER TRAP
R/L PHONO AUDIO
RGB
CVBS
S-VHS
R/L AUDIO
SLOW SWITCHING
AUXILIARY
SCART
CONNECTOR
DVD Players
DVD+R/W Players
VCR SCART
CONNECTOR
R/L AUDIO
FAST SWITCHING
SLOW SWITCHING
VIDEO
GROUND
DIGITAL
GROUND
AUDIO
GROUND
________________________________________________________________
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.
Audio/Video Switch for Three SCART
Connectors
MAX4399
ABSOLUTE MAXIMUM RATINGS
Voltages
V_VID to G_VID .....................................................-0.3V to +6V
V12 to G_AUD .....................................................-0.3V to +14V
V_DIG to G_DIG ....................................................-0.3V to +6V
G_AUD to G_DIG ...............................................-0.1V to +0.1V
G_VID to G_DIG .................................................-0.1V to +0.1V
G_AUD to G_VID ................................................-0.1V to +0.1V
Video Inputs, Video Outputs, ENC_FS_IN, VCR_FS_IN,
VID_BIAS, TRAP ................................-0.3V to (V
V_VID
+ 0.3V)
V_AUD to G_AUD................................................-0.3V to +9V
Audio Inputs, Audio Outputs,
AUD_BIAS........................................-0.3V to (V
V_AUD
+ 0.3V)
SDA, SCL, DEV_ADDR, INTERRUPT_OUT .........-0.3V to +6V
AUX_SS, TV_SS, VCR_SS ....................-0.3V to (V
V12
+ 0.3V)
Currents
INTERRUPT_OUT ..........................................................+50mA
TRAP................................................................................±4mA
Output Short Circuit
Video Outputs and TV_FS_OUT to V_VID,
V_DIG, G_AUD, G_VID, or G_DIG ........................Continuous
Audio Outputs to V_AUD, V_VID, V_DIG,
G_AUD, G_VID, or G_DIG.....................................Continuous
AUX_SS, TV_SS, and VCR_SS to V12,
V_AUD, V_VID, V_DIG, G_AUD,
G_VID, or G_DIG...................................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
68-Pin Thin QFN (derate 41.7mW/°C
above +70°C).........................................................3333.3mW
Operating Temperature Range...............................0°C to +70°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
V12
= 12V, V
V_VID
= 5V, V
V_DIG
= 5V, 0.47µF X5R capacitor in parallel with a 10µF aluminum electrolytic capacitor from V_AUD to
G_AUD, no load, T
A
= 0°C to +70°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
DC
V12 Supply Voltage Range
V_VID Supply Voltage Range
V_DIG Supply Voltage Range
V12 Quiescent Supply Current
V_VID Quiescent Supply Current
V_VID Standby Supply Current
V_DIG Quiescent Supply Current
VIDEO
CVBS and S-VHS
Voltage Gain
1V
P-P
input
R, G, B, gain = 5dB
R, G, B, gain = 6dB
R, G, B, gain = 7dB
Small-Signal Bandwidth, -3dB
100mV
P-P
input,
gain = 6dB
1V
P-P
input, gain
= 6dB, T
A
=
+25°C (Note 2)
CVBS and S-VHS
R, G, B
CVBS and S-VHS
R, G, B
15
5.5
4.5
5.5
6.5
6
5
6
7
110
110
27
MHz
30
6.5
5.5
6.5
7.5
MHz
dB
All video output amplifiers are enabled, no
load
All video output amplifiers are in shutdown,
and TV_FS_OUT driver is in shutdown
Inferred from the slow switch output levels
Inferred from the output swing of the video
outputs
11.4
4.75
4.75
12
5
5
17
51
19
1
12.6
5.25
5.25
35
116
34
3
V
V
V
mA
mA
mA
mA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Large-Signal Bandwidth, -3dB
2
_______________________________________________________________________________________
Audio/Video Switch for Three SCART
Connectors
ELECTRICAL CHARACTERISTICS (continued)
(V
V12
= 12V, V
V_VID
= 5V, V
V_DIG
= 5V, 0.47µF X5R capacitor in parallel with a 10µF aluminum electrolytic capacitor from V_AUD to
G_AUD, no load, T
A
= 0°C to +70°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Slew Rate
Gain Matching
Differential Gain
DG
SYMBOL
SR
CONDITIONS
1V
P-P
input, gain = 6dB
1V
P-P
input, between RGB or Y-C
5-step
modulated
staircase
5-step
modulated
staircase
1V
P-P
input
f = 0.1MHz to
6MHz
RF_CVBS_OUT
All other video outputs
RF_CVBS_OUT
All other video outputs
RF_CVBS_OUT
All other video outputs
-0.5
MIN
TYP
170
0
0.03
%
0.13
0.09
degrees
0.36
-86
5
3
1.21
1.88
-2
0
60
4
11
2.5
RGB, composite, and
luma
Chroma
Pulldown Resistance
Crosstalk
Mute Suppression
AUDIO
V_AUD Voltage
Voltage Gain
Gain Matching Between
Channels
Gain Flatness
Frequency Bandwidth
Generated by internal linear regulator
1.414V
P-P
input, gain = 0dB
1.414V
P-P
input, gain = 0dB
f = 20Hz to 20kHz, 0.5V
RMS
input, gain =
0dB
0.5V
RMS
input; frequency where output is
-3dB with 1kHz serving as 0dB
-0.25
-0.5
8.1
0
0
0.005
210
+0.25
+0.5
V
dB
dB
dB
kHz
VCR_R/C_OUT, AUX_R/C_OUT,
TV_R/C_OUT
f = 4.43MHz, 1V
P-P
input, between any two
active inputs
f = 4.43MHz, 1V
P-P
input, on one input
4.2
1.05
2.24
10
-63
-65
Ω
dB
dB
8.0
+2
dB
ns
V
V
%
dB
MΩ
kΩ
µA
V
+0.5
MAX
UNITS
V/µs
dB
MAX4399
Differential Phase
Signal-to-Noise Ratio
Group Delay
Bottom Level Clamp
Chroma Bias
Sync Crush
Power-Supply Rejection Ratio
Input Impedance
Input Clamp Current
Output Bias Voltage
DP
SNR
RGB, composite and luma, no signal, no
load
Chroma only, no signal, no load
Percentage reduction in sync pulse
(0.3V
P-P
); inferred from input clamping
current with a 0.1µF coupling capacitor
PSRR
f = 100kHz, 0.5V
P-P
CVBS, Y, or RGB video input
Chroma video input
V
IN
= 1.75V
No signal, no
load
_______________________________________________________________________________________
3
Audio/Video Switch for Three SCART
Connectors
MAX4399
ELECTRICAL CHARACTERISTICS (continued)
(V
V12
= 12V, V
V_VID
= 5V, V
V_DIG
= 5V, 0.47µF X5R capacitor in parallel with a 10µF aluminum electrolytic capacitor from V_AUD to
G_AUD, no load, T
A
= 0°C to +70°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Input DC Level
Input Signal Amplitude
Input Resistance
Output DC Level
Signal-to-Noise Ratio
Total Harmonic Distortion
Output Impedance
1.414V
P-P
input
PSRR
TV audio, volume control
range extends from -56dB
to +6dB
VCR, AUX audio
Power-Supply Rejection Ratio
Mute Suppression
Audio Limiter Level
Crosstalk
DIGITAL INTERFACE: SDA and SCL
Low-Level Input Voltage
High-Level Input Voltage
Hysteresis of Schmitt Trigger
Input
SDA Low-Level Output Voltage
Output Fall Time for SDA Line
Spike Suppression
Input Current
Input Capacitance
SCL Clock Frequency
Hold Time
Low Period of SCL Clock
High Period of SCL Clock
Setup Time for a Repeated Start
Condition
Data Hold Time
Data Setup Time
Maximum Receive SCL/SDA Rise
Time
t
HD,STA
t
LOW
t
HIGH
t
SU,STA
t
HD,DAT
t
SU,DAT
t
R
(Note 3)
Repeated start condition
0
0.6
1.3
0.6
0.6
0
100
300
0.9
V
IL
= 0V, V
IH
= 5V
-10
5
400
V
OL
I
SINK
= 3mA
I
SINK
= 6mA
400pF bus load
50
+10
0
0
V
IL
V
IH
2.6
0.2
0.4
0.6
250
0.8
V
V
V
V
ns
ns
µA
pF
kHz
µs
µs
µs
µs
µs
ns
ns
f = 1kHz, 0.5V
P-P
f = 1kHz, 0.5V
RMS
input
f = 1kHz, 2.5V
RMS
input
f = 1kHz, 0.5V
RMS
, gain = 0dB
1.5
5.5
SNR
THD
f = 1.0kHz, 1V
RMS
, gain = 0dB, 20Hz to
20kHz
R
LOAD
= 10kΩ
f = 1.0kHz, 0.5V
RMS
f = 1.0kHz, 2V
RMS
SYMBOL
Gain = 0dB
Inferred through total harmonic distortion
specification, f = 1kHz
CONDITIONS
MIN
TYP
V_AUD/2
2
100
V_AUD/2
105
0.002
0.005
0.5
2
6
110
105
6.7
105
2.5
6.5
dB
dB
V
P-P
dB
MAX
UNITS
V
V
RMS
kΩ
V
dB
%
Ω
Volume Attenuation Step
dB
4
_______________________________________________________________________________________
Audio/Video Switch for Three SCART
Connectors
ELECTRICAL CHARACTERISTICS (continued)
(V
V12
= 12V, V
V_VID
= 5V, V
V_DIG
= 5V, 0.47µF X5R capacitor in parallel with a 10µF aluminum electrolytic capacitor from V_AUD to
G_AUD, no load, T
A
= 0°C to +70°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Minimum Receive SCL/SDA Rise
Time (Note 3)
Maximum Receive SCL/SDA Fall
Time (Note 3)
Minimum Receive SCL/SDA Fall
Time (Note 3)
Setup Time for Stop Condition
Bus Free Time Between a Stop
and Start
OTHER DIGITAL PINS
DEV_ADDR Low Level
DEV_ADDR High Level
INTERRUPT_OUT Low Voltage
INTERRUPT_OUT High Leakage
Current
SLOW SWITCHING
Input Low Level
Input Medium Level
Input High Level
Input Current
Output Low Level
Output Medium Level (External
16/9)
Output High Level (External 4/3)
FAST SWITCHING
Input Low Level
Input High Level
Input Current
Output Low Level
Output High Level
Fast-Switching Output to RGB
Skew
Fast-Switching Output Rise Time
Fast-Switching Output Fall Time
I
SINK
= 0.5mA
V_VID - V
OH
, I
SOURCE
= 20mA
Difference in propagation delays of fast-
switching signal and RGB signals;
measured from 50% input transition to 50%
output transition
R
LOAD
= 150Ω to ground
R
LOAD
= 150Ω to ground
0
0
1
1
0.01
0.75
0.4
3
10
0.2
2
V
V
µA
V
V
R
LOAD
= 10kΩ to ground
R
LOAD
= 10kΩ to ground
R
LOAD
= 10kΩ to ground
0
5.0
10
0
4.5
9.5
50
2
7.0
12.0
100
1.5
6.5
12
V
V
V
µA
V
V
V
INTERRUPT_OUT sinking 1mA
V
INTERRUPT_OUT
= 5V
2.6
0.15
1
0.4
10
0.8
V
V
V
µA
SYMBOL
t
R
t
F
t
F
t
SU,STO
t
BUF
0.6
1.3
CONDITIONS
MIN
TYP
20 +
0.1C
B
300
20 +
0.1C
B
MAX
UNITS
ns
ns
ns
µs
µs
MAX4399
30
ns
30
30
ns
ns
Note 1:
All devices are 100% tested at T
A
= +25°C. All temperature limits are guaranteed by design.
Note 2:
Parameter guaranteed by design.
Note 3:
C
B
= total capacitance of one bus line in pF. Tested with C
B
= 400pF.
_______________________________________________________________________________________
5
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