MAX9507 Maxim Integrated Products, MAX9507 Datasheet - Page 19

• Manufacturer Part Number: MAX9507
• Description: 1.8V DirectDrive Video Filter Amplifier
• Manufacturer: Maxim Integrated Products

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data byte to be read will be from the register address
location set by the previous transaction and not 0x00,
and subsequent reads will autoincrement the address
pointer until the next STOP condition. Attempting to
read from register addresses higher than 0x01 results
in repeated reads from a dummy register containing
0xFF data. The master acknowledges receipt of each
read byte during the acknowledge clock pulse. The
master must acknowledge all correctly received bytes
except the last byte. The final byte must be followed by
a not acknowledge from the master and then a STOP
condition. Figures 10 and 11 illustrate the frame format
for reading data from the MAX9507.
Figure 10. Reading One Indexed Byte of Data from the MAX9507
Figure 11. Reading n-Bytes of Indexed Data from the MAX9507
Table 5. MAX9507 Power Consumption with Different Video Signals
Load Detection and Dual SPST Analog Switches
All Black Screen
All White Screen
75% Color Bars
50% Flat Field
S
S
ACKNOWLEDGE FROM MAX9507
SLAVE ADDRESS
ACKNOWLEDGE FROM MAX9507
VIDEO SIGNAL
SLAVE ADDRESS
1.8V DirectDrive Video Filter Amplifier with
______________________________________________________________________________________
R/W
R/W
0
0
A
A
ACKNOWLEDGE FROM MAX9507
MAX9507 POWER CONSUMPTION WITH
ACKNOWLEDGE FROM MAX9507
REGISTER ADDRESS
REGISTER ADDRESS
FILTER ENABLED (mW)
REPEATED START
REPEATED START
18.2
11.6
11.7
6.7
A
A
Sr
ACKNOWLEDGE FROM MAX9507
Sr
ACKNOWLEDGE FROM MAX9507
SLAVE ADDRESS
The quiescent power consumption and average power
consumption of the MAX9507 is remarkably low
because of 1.8V operation and DirectDrive technology.
Quiescent power consumption is defined when the
MAX9507 is operating without load. In this case, the
MAX9507 consumes about 5.8mW. Average power
consumption, which is defined when the MAX9507 dri-
ves a 150Ω load to ground with a 50% flat field, is
about 11.7mW. Table 5 shows the power consumption
with different video signals. The supply voltage is 1.8V
and OUT drives a 150Ω load to ground.
Notice that the two extremes in power consumption occur
with a video signal that is all black and a video signal that
is all white. The power consumption with 75% color bars
and 50% flat field lies in between the extremes.
SLAVE ADDRESS
R/W
R/W
MAX9507 POWER CONSUMPTION WITH
1
Applications Information
1
A
NOT ACKNOWLEDGE FROM MASTER
A
FILTER DISABLED (mW)
Power Consumption
DATA BYTE
17.9
11.0
11.3
1 BYTE
REGISTER ADDRESS POINTER
6.2
AUTOINCREMENT INTERNAL
DATA BYTE
1 BYTE
REGISTER ADDRESS POINTER
AUTOINCREMENT INTERNAL
A
P
A
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