DATASHEET

ISL59110
Data Sheet
February 12, 2014
FN6104.5
8MHz Rail-to-Rail Composite Video Driver
Features
The ISL59110 is a single rail-to-rail 3-pole output
reconstruction filter with a -3dB roll-off frequency of 8MHz
and a slew rate of 40V/µs, with input signal DC restoration
accomplished with an internal sync tip clamp. Operating
from single supplies ranging from +2.5V to +3.6V and
sinking an ultra-low 2mA quiescent current, the ISL59110 is
ideally suited for low power, battery-operated applications. It
also features inputs capable of reaching down to 0.15V
below the negative rail. Additionally, an enable high pin shuts
the part down in under 14ns.
• 3rd order 8MHz reconstruction filter
The ISL59110 is designed to meet the needs for very low
power and bandwidth required in battery-operated
communication, instrumentation and modern industrial
applications, such as video on demand, cable set-top boxes,
DVD players and HDTV. The ISL59110 is offered in a spacesaving SC-70 package guaranteed to a 1mm maximum
height constraint and specified for operation from -40°C to
+85°C temperature range.
PART
MARKING
(Note 2)
• Low supply current = 2mA
• Power-down current less than 3µA
• Supplies from 2.5V to 3.6V
• Rail-to-rail output
• Input to 0.15V below VS• Input sync tip clamp
• SAG correction reduces AC coupling capacitor size
• RoHS compliant
Applications
• Video amplifiers
• Portable and handheld products
• Communications devices
Ordering Information
PART NUMBER
(Note 1)
• 40V/µs slew rate
• Video on demand
TAPE &
REEL
PACKAGE
(Pb-Free)
PKG.
DWG. #
• Cable set-top boxes
• Satellite set-top boxes
ISL59110IEZ-T7
CNA
7” (3k pcs) 6 Ld SC-70 P6.049A
• DVD players
NOTES:
1. These Intersil Pb-free plastic packaged products employ special
Pb-free material sets, molding compounds/die attach materials,
and 100% matte tin plate plus anneal (e3 termination finish,
which is RoHS compliant and compatible with both SnPb and
Pb-free soldering operations). Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or
exceed the Pb-free requirements of IPC/JEDEC J STD-020.
• HDTV
• Personal video recorders
Pinout
ISL59110
(6 LD SC-70)*
TOP VIEW
2. The part marking is located on the bottom of the part.
IN+ 1
GND 2
SAG 3
6 VS+
LPF
+
-
5 EN
4 OUT
*1mm MAXIMUM HEIGHT GUARANTEED
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas LLC. 2005-2007, 2014. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
ISL59110
Absolute Maximum Ratings (TA = +25°C)
Thermal Information
Supply Voltage from VS+ to GND . . . . . . . . . . . . . . . . . . . . . . . 3.6V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . VS+ +0.3V to GND -0.3V
Continuous Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . 40mA
ESD Rating
Human Body Model (Per MIL-STD-883 Method 3015.7) . . .3000V
Machine Model (Per EIAJ ED-4701 Method C-111) . . . . . . . .300V
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +125°C
Ambient Operating Temperature . . . . . . . . . . . . . . . .-40°C to +85°C
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +125°C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are
at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
Electrical Specifications
DESCRIPTION
VS+ = 3.3V, TA = +25°C, RL = 150Ω to GND, CL = 0.1µF, unless otherwise specified.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
3.6
V
2.75
mA
3
µA
INPUT CHARACTERISTICS
VCC
Supply Voltage Range
2.5
IDD(ON)
Quiescent Supply Current
VIN = 500mV, EN = VDD, no load
IDD(OFF)
Shutdown Supply Current
EN = 0V
VOLS
Output Level Shift Voltage
VIN = 0V, no load
60
130
200
mV
VCLAMP
Input Voltage Clamp
IIN = -1mA
-40
-15
+10
mV
ICLAMP_CHG
Clamp Charge Current
VIN = VCLAMP - 100mV
-6
-3
mA
ICLAMP_DCHG
Clamp Discharge Current
VIN = 500mV
2.5
5
7.5
µA
RIN
Input Resistance
0.5V < VIN < 1.0V
0.5
3
AV
Voltage Gain
RL = 150Ω
1.95
2.0
ASAG
SAG Correction DC Gain to VOUT
SAG open
PSRR
DC Power Supply Rejection
VDD = 2.7V to 3.3V
VOH
Output Voltage High Swing
VIN = 2V, RL = 150Ω to GND
ISC
Output Short-Circuit Current
VIN = 2V, to GND through 10Ω
2
MΩ
2.04
V/V
2.25
V/V
43
63
dB
2.85
3.2
V
-94
VIN = 100mV, out short to VDD through 10Ω
65
115
-3
0
IENABLE
Enable Current
±3.3V, enable pin = 0V
VIL
Disable Threshold
VDD = 2.7V to 3.3V
VIH
Enable Threshold
VDD = 2.7V to 3.3V
1.6
ROUT
Shutdown Output Impedance
EN = 0V DC
3.6
-65
mA
mA
+3
µA
0.8
V
V
4.5
5.9
kΩ
EN = 0V, f = 4.5MHz
3.4
kΩ
AC PERFORMANCE
BW
±0.1dB Bandwidth
RL = 150Ω, CL = 5pF
4
MHz
BW
-3dB Bandwidth
RL = 150Ω, CL = 5pF
8
MHz
Normalized Stopband Gain
f = 27MHz
-24.2
dB
Differential Gain
NTSC and PAL DC coupled
0.10
%
NTSC and PAL AC coupled
0.84
%
NTSC and PAL DC coupled
0.05
°
NTSC and PAL AC coupled
0.62
°
f = 100kHz, 5MHz
5.4
ns
dG
dP
D/DT
Differential Phase
Group Delay Variation
2
FN6104.5
February 12, 2014
ISL59110
Electrical Specifications
DESCRIPTION
VS+ = 3.3V, TA = +25°C, RL = 150Ω to GND, CL = 0.1µF, unless otherwise specified. (Continued)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
SNR
Signal To Noise Ratio
100% white signal
65
dB
tON
Enable Time
VIN = 500mV, VOUT to 1%
200
ns
tOFF
Disable Time
VIN = 500mV, VOUT to 1%
14
ns
+SR
Positive Slew Rate
10% to 90%, VIN = 1V step
20
41
70
V/µs
-SR
Negative Slew Rate
90% to 10%, VIN = 1V step
-20
-30
-70
V/µs
tF
Fall Time
2.5VSTEP, 80% - 20%
25
ns
tR
Rise Time
2.5VSTEP, 20% - 80%
22
ns
Typical Performance Curves
NORMALIZED GAIN (dB)
0.5
VDD=+3.3V
RL=150Ω
0.3 CL=5pF
-0.1dB BW
@ 4MHz
0.1
-0.1
-0.3
-0.5
100k
1M
10M
100k
FREQUENCY (Hz)
FIGURE 1. GAIN vs FREQUENCY -0.1dB
FIGURE 2. GAIN vs FREQUENCY -3dB POINT
100k
FIGURE 3. GAIN vs FREQUENCY -3dB
3
FIGURE 4. GAIN vs FREQUENCY FOR VARIOUS RLOAD
FN6104.5
February 12, 2014
ISL59110
Typical Performance Curves (Continued)
100k
FIGURE 5. GAIN vs FREQUENCY FOR VARIOUS CLOAD
FIGURE 6. MAXIMUM OUTPUT MAGNITUDE vs INPUT
MAGNITUDE
1k
100k
FIGURE 7. PHASE vs FREQUENCY
10k
100k
FIGURE 8. PSRR vs FREQUENCY
100
OUTPUT IMPEDANCE (Ω)
VDD=+3.3V
10
1
0.1
0.01
10k
100k
1M
10M
100M
100k
FREQUENCY (Hz)
FIGURE 9. OUTPUT IMPEDANCE vs FREQUENCY
4
FIGURE 10. ISOLATION vs FREQUENCY
FN6104.5
February 12, 2014
ISL59110
Typical Performance Curves (Continued)
FIGURE 11. MAXIMUM OUTPUT vs LOAD RESISTANCE
FIGURE 12. SUPPLY CURRENT vs SUPPLY VOLTAGE
t
t
t
t
FIGURE 13. LARGE SIGNAL STEP RESPONSE
FIGURE 14. SMALL SIGNAL STEP RESPONSE
FIGURE 15. ENABLE TIME
FIGURE 16. DISABLE TIME
5
FN6104.5
February 12, 2014
ISL59110
Typical Performance Curves (Continued)
FIGURE 17. HARMONIC DISTORTION vs FREQUENCY
FIGURE 18. HARMONIC DISTORTION vs OUTPUT VOLTAGE
100k
FIGURE 19. GROUP DELAY vs FREQUENCY
FIGURE 20. -3dB BANDWIDTH vs INPUT RESISTANCE
FIGURE 21. SLEW RATE vs SUPPLY VOLTAGE
6
FN6104.5
February 12, 2014
ISL59110
Typical Performance Curves (Continued)
JEDEC JESD51-7 HIGH EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
0.50
0.45
450mW
0.40
7
+ 2 0 -6
20
°C
/W
0.20
0.15
0.10
0.35
-6
/W
70 0°C
0
+2
0.25
=
0.40
=
0.30
SC
A
JA
SC
θ
0.35
500mW
0.45
θJ
POWER DISSIPATION (W)
0.55
POWER DISSIPATION (W)
0.50
JEDEC JESD51-3 LOW EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
0.30
0.25
0.20
0.15
0.10
0.05
0.05
0
0
0
25
50
75 85 100
125
0
150
25
50
75 85 100
125
150
AMBIENT TEMPERATURE (°C)
AMBIENT TEMPERATURE (°C)
FIGURE 22. PACKAGE POWER DISSIPATION vs AMBIENT
TEMPERATURE
FIGURE 23. PACKAGE POWER DISSIPATION vs AMBIENT
TEMPERATURE
SYNC CLAMP
VDD
VDD
VDD
SALLEN KEY LOW PASS FILTER
C2
+
CIN
SAG
NETWORK
R1
IN
R2
R3
VDC
+
–
IN
RIN
100nF
C1
OUT
+
-
C3
R6 (1.5k)
SAG
R7 (1k)
AC COUPLING
CAPACITOR
C5
47µF
C4
ROUT
75Ω
RL
75Ω
22µF
R5 (0.6k)
EN
EN = GND: SHUTDOWN IDD~0
EN = VDD: ACTIVE IDD~1.5mA
GND
R4 (1.2k)
FIGURE 24. BLOCK DIAGRAM
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.
7
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
FN6104.5
February 12, 2014
ISL59110
presenting a 0V input to most single supply driven amplifiers
will saturate the output stage of the amplifier resulting in a
clipped sync tip and degrading the video image. A larger
positive reference may offset the input above its positive
range.
SAG
NETWORK
AC COUPLING
CAPACITOR
C5
R6
The ISL59110 features an internal sync clamp and offset
function to level shift the entire video signal to the best level
before it reaches the input of the amplifier stage. These
features are also helpful to avoid saturation of the output
stage of the amplifier by setting the signal closer to the best
voltage range.
R7
ROUT
RL
C4
R5
R4
The simplified block diagram of the ISL59110 in Figure 24 is
divided into four sections. The first, Section A is the Sync
Clamp. The AC coupled video sync signal is pulled negative
by a current source at the input of the comparator amplifier.
When the sync tip goes below the comparator threshold the
output comparator is driven negative, The PMOS device
turns on clamping sync tip to near ground level. The network
triggers on the sync tip of video signal.
FIGURE 25. SAG NETWORK AND AC COUPLING CAPACITORS
The Sallen Key Low Pass Filter
The internal SAG network of the ISL59110 replaces the
220µF AC coupling capacitor with a network of two smaller
capacitors as shown in Figure 25. Additionally, the network is
designed to place a zero in the ~30Hz range, providing a
small amount of peaking to compensate the phase response
associated with field tilt.
The Sallen Key is a classic low pass configuration illustrated
in Figure 24. This provides a very stable low pass function,
and in the case of the ISL59110, a three-pole roll-off at
around 8MHz. The three-pole function is accomplished with
an RC low pass network placed in series with and before the
Sallen Key. One pole provided by the RC network and poles
two and three provided by the Sallen Key for a nice threepole roll-off at around 8MHz. If more aggressive, multiplepole roll-offs are needed, multiple ISL59110 can be placed in
series. There will, of course, be a loss of bandwidth as
additional devices are added.
AC Output Coupling and the SAG Network
Composite video signals carry viable information at
frequencies as low as 30Hz up to 5MHz. When a video
system output is AC coupled it is critical that the filter
represented by the output coupling capacitor and the
surrounding resistance network provide a band pass
function with a low pass band low enough to exclude very
low frequencies down to DC, and with a high pass band pass
sufficiently high to include frequencies at the higher end of
the video spectrum.
Typically this is accomplished with 220µF coupling capacitor,
a large and somewhat costly solution providing a low
frequency pole around 5Hz. If the size of this capacitor is
even slightly reduced we have found that the accompanying
phase shift in the 50Hz to 100Hz frequency range results in
field tilt resulting in a degraded video image.
DC Output Coupling
The ISL59110 internal sync clamp makes it possible to DC
couple the output to a video load, eliminating the need for
any AC coupling capacitors, thereby saving board space and
additional expense for capacitors. This makes the ISL59110
extremely attractive for portable video applications.
Additionally, this solution completely eliminates the issue of
field tilt in the lower frequency. The trade off is greater
demand of supply current. Typical load current for AC
coupled is around 3mA, compared to typical 6mA used when
DC coupling.
ENABLE
+
-
ROUT
TELEVISION
OR VCR
FIGURE 26. DC COUPLE
8
FN6104.5
February 12, 2014
ISL59110
Output Drive Capability
Where:
The ISL59110 does not have internal short circuit protection
circuitry. If the output is shorted indefinitely, the power
dissipation could easily overheat the die or the current could
eventually compromise metal integrity. Maximum reliability is
maintained if the output current never exceeds ±40mA. This
limit is set by the design of the internal metal interconnect.
Note that in transient applications, the part is robust.
Short circuit protection can be provided externally with a
back match resistor in series with the output placed close as
possible to the output pin. In video applications this would be
a 75Ω resistor and would provide adequate short circuit
protection to the device. Care should still be taken not to
stress the device with a short at the output.
Power Dissipation
With the high output drive capability of the ISL59110, it is
possible to exceed the +125°C absolute maximum junction
temperature under certain load current conditions.
Therefore, it is important to calculate the maximum junction
temperature for an application to determine if load conditions
or package types need to be modified to assure operation of
the amplifier in a safe operating area.
The maximum power dissipation allowed in a package is
determined according to Equation 1:
T JMAX – T AMAX
PD MAX = --------------------------------------------Θ JA
(EQ. 1)
VS = Supply voltage
ISMAX = Maximum quiescent supply current
VOUT = Maximum output voltage of the application
RLOAD = Load resistance tied to ground
ILOAD = Load current
By setting the two PDMAX equations equal to each other, we
can solve the output current and RLOAD to avoid the device
overheat.
Power Supply Bypassing Printed Circuit Board
Layout
As with any modern operational amplifier, a good printed
circuit board layout is necessary for optimum performance.
Lead lengths should be as short as possible. The power
supply pin must be well bypassed to reduce the risk of
oscillation. For normal single supply operation, a single
4.7µF tantalum capacitor in parallel with a 0.1µF ceramic
capacitor from VS+ to GND will suffice.
Printed Circuit Board Layout
For good AC performance, parasitic capacitance should be
kept to a minimum. Use of wire wound resistors should be
avoided because of their additional series inductance. Use
of sockets should also be avoided if possible. Sockets add
parasitic inductance and capacitance that can result in
compromised performance.
Where:
TJMAX = Maximum junction temperature
TAMAX = Maximum ambient temperature
ΘJA = Thermal resistance of the package
The maximum power dissipation actually produced by an IC
is the total quiescent supply current times the total power
supply voltage, plus the power in the IC due to the load, or:
for sourcing:
V OUT
PD MAX = V S × I SMAX + ( V S – V OUT ) × ---------------R
L
(EQ. 2)
for sinking:
PD MAX = V S × I SMAX + ( V OUT – V S ) × I LOAD
(EQ. 3)
9
FN6104.5
February 12, 2014
ISL59110
Small Outline Transistor Plastic Packages (SC70-6)
0.20 (0.008) M
VIEW C
C
P6.049A
CL
6 LEAD SMALL OUTLINE TRANSISTOR PLASTIC PACKAGE
e
b
6
INCHES
5
4
CL
CL
E1
E
1
2
3
e1
C
D
CL
SYMBOL
MIN
MAX
MIN
MAX
NOTES
A
0.031
0.039
0.80
1.00
-
A1
0.001
0.004
0.025
0.10
-
A2
0.034
0.036
0.85
0.90
-
b
0.006
0.012
0.15
0.30
-
b1
0.006
0.010
0.15
0.25
-
c
0.004
0.008
0.10
0.20
6
c1
0.004
0.006
0.10
0.15
6
D
0.073
0.085
1.85
2.15
3
E
A
A2
SEATING
PLANE
A1
-C-
E1
e
e1
L
0.10 (0.004) C
MILLIMETERS
0.084 BSC
0.045
0.053
2.1 BSC
1.15
0.0256 Ref
0.018
1.35
-
1.30 Ref
0.26
-
0.46
0.016 Ref.
0.400 Ref.
-
L2
0.006 BSC
0.15 BSC
-
WITH
b
N
b1
R
0.004
-
0.10
-
α
0°
8°
0°
8°
c1
4
L1
PLATING
c
3
0.65 Ref
0.0512 Ref
0.010
-
6
6
5
Rev. 0 7/05
NOTES:
BASE METAL
1. Dimensioning and tolerance per ASME Y14.5M-1994.
2. Package conforms to EIAJ SC70 and JEDEC MO203AB.
4X θ1
3. Dimensions D and E1 are exclusive of mold flash, protrusions,
or gate burrs.
R1
4. Footlength L measured at reference to gauge plane.
5. “N” is the number of terminal positions.
R
GAUGE PLANE
SEATING
PLANE
L
C
L1
α
L2
6. These Dimensions apply to the flat section of the lead between
0.08mm and 0.15mm from the lead tip.
7. Controlling dimension: MILLIMETER. Converted inch dimensions are for reference only
4X θ1
VIEW C
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9001 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
10
FN6104.5
February 12, 2014