ISL59110 Intersil Corporation, ISL59110 Datasheet - Page 7

• Manufacturer Part Number: ISL59110
• Description: Rail-to-Rail Composite Video Driver
• Manufacturer: Intersil Corporation

Typical Performance Curves
Application Information
The ISL59110 is a single supply rail-to-rail output amplifier
achieving a -3dB bandwidth of around 8MHz and slew rate
of about 40V/µs while demanding only 2mA of supply
current. This part is ideally suited for applications with
specific micropower consumption and high bandwidth
demands. As the performance characteristics above and the
features described below, the ISL59110 is designed to be
very attractive for portable composite video applications.
FIGURE 22. PACKAGE POWER DISSIPATION vs AMBIENT
0.45
0.35
0.25
0.15
0.05
IN
0.5
0.4
0.3
0.2
0.1
0
R
0
JEDEC JESD51-3 LOW EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
IN
450mW
TEMPERATURE
100nF
V
25
C
DD
IN
AMBIENT TEMPERATURE (°C)
V
IN
EN
GND
50
DD
SYNC CLAMP
7
75
EN=GND: SHUTDOWN I
EN=V
+
-
85
100
DD
: ACTIVE I
V
DD
125
R
1
DD
FIGURE 24. BLOCK DIAGRAM
~1.5mA
150
DD
~0
SALLEN KEY LOW PASS FILTER
C
R
2
1
ISL59110
C
R
2
3
C
The ISL59110 features a sync clamp, low pass function, and
SAG network at the output facilitating reduction of typically
large AC coupling capacitors. See Figure 24.
Internal Sync Clamp
The typical embedded video DAC operates from a ground
referenced single supply. This becomes an issue because
the lower level of the sync pulse output may be at a 0V
reference level to some positive level. The problem is
presenting a 0V input to most single supply driven amplifiers
will saturate the output stage of the amplifier resulting in a
V
3
FIGURE 23. PACKAGE POWER DISSIPATION vs AMBIENT
DC
+
-
0.55
0.45
0.35
0.25
0.15
0.05
0.5
0.4
0.3
0.2
0.1
TEMPERATURE
0
0
JEDEC JESD51-7 HIGH EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
500mW
25
AMBIENT TEMPERATURE (°C)
NETWORK
R
R
R
6
5
4
R
SAG
7
50
SAG
OUT
75
AC COUPLING
CAPACITOR
85
47uF
22uF
C
C
100
5
4
125
R
August 8, 2005
OUT
75Ω
FN6104.1
150
R
75Ω
L