DATASHEET
ISL59420
400MHz Multiplexing Amplifier
The ISL59420 is a 420MHz bandwidth 2:1 multiplexing
amplifier designed primarily for video switching. This Mux-amp
has user-settable gain and also feature a high speed three-state
function to enable the output of multiple devices to be wired
together. All logic inputs have pull-downs to ground and may be
left floating. The ENABLE pin, when pulled high, sets the
ISL59420 to the low current power-down mode for power
sensitive applications - consuming just 5mW.
TABLE 1. CHANNEL SELECT LOGIC TABLE
S0
0
1
X
X
ENABLE
0
0
1
0
HIZ
0
0
X
1
OUTPUT
IN0
IN1
Power Down
High Z
FN7459
Rev 2.00
July 3, 2012
Features
• 420MHz (-3dB) Bandwidth (A
V
= 1, V
OUT
= 400mV
P-P
)
• 165MHz (-3dB) Bandwidth (A
V
= 2, V
OUT
= 2V
P-P
)
• Slew Rate (A
V
= 1, R
L
= 500
V
OUT
= 4V). . . . . . . . . . 966V/µs
• Slew Rate (A
V
= 2, R
L
= 500
V
OUT
= 5V) . . . . . . . . .1462V/µs
• Selectable Gain
• High Speed Three-State Output (HIZ)
• Low Current Power-Down . . . . . . . . . . . . . . . . . . . . . . . . . 5mW
• Pb-Free (RoHS Compliant)
Applications
• HDTV/DTV Analog Inputs
• Video Projectors
• Computer Monitors
• Set-Top Boxes
• Security Video
• Broadcast Video Equipment
Related Literature
• See
AN1187,
“ISL59420/21EVAL1 Evaluation Board User’s
Guide”
S0
EN0
DECODE
IN0
EN1
IN1
-
+
IN-
OUT
AMPLIFIER BIAS
HIZ
ENABLE
ENABLE pin must be low in order to activate the HIZ state
FIGURE 1. FUNCTIONAL DIAGRAM
FN7459 Rev 2.00
July 3, 2012
Page 1 of 13
ISL59420
Pin Configuration
ISL59420
(10 LD MSOP)
TOP VIEW
S0
GND
IN0
ENABLE
IN1
1
2
3
4
5
-
+
10 IN-
9
8
7
6
OUT
V+
V-
HIZ
Pin Descriptions
PIN
NUMBER
1
2
3
4
5
6
7
8
9
10
PIN
NAME
S0
GND
IN0
ENABLE
IN1
HIZ
V-
V+
OUT
IN-
EQUIVALENT
CIRCUIT
Circuit 2
Circuit 4
Circuit 1
Circuit 2
Circuit 1
Circuit 2
Circuit 4
Circuit 4
Circuit 3
Circuit 1
Ground pin
Input for channel 0
Device enable (active low); there are internal pull-down resistors, so the device will be active with no
connection; "HI" puts device into power-down mode.
Input for channel 1
Output disable (active high); there are internal pull-down resistors, so the device will be active with no
connection; “HI” puts the output in high impedance state.
Negative power supply
Positive power supply
Output
Inverting input of output amplifier
V+
21k
IN
V-
CIRCUIT 1.
V+
OUT
V-
CIRCUIT 3.
V+
GND
V-
CAPACITIVELY
COUPLED
ESD CLAMP
CIRCUIT 4.
LOGIC PIN
33k
+
1.2V
-
V+
GND.
V-
CIRCUIT 2.
DESCRIPTION
Channel selection pin LSB (binary logic code)
Ordering Information
PART NUMBER
(Notes 2, 3)
ISL59420IUZ
ISL59420IUZ-T7 (Note 1)
ISL59420IUZ-T13 (Note 1)
NOTES:
1. Please refer to
TB347
for details on reel specifications.
2. 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.
3. For Moisture Sensitivity Level (MSL), please see device information page for
ISL59420.
For more information on MSL please see tech brief
TB363.
BBPAA
BBPAA
BBPAA
PART
MARKING
PACKAGE
(Pb-free)
10 Ld MSOP
10 Ld MSOP
10 Ld MSOP
TAPE &
REEL
-
7”
13”
PKG.
DWG. #
M10.118A
M10.118A
M10.118A
FN7459 Rev 2.00
July 3, 2012
Page 2 of 13
ISL59420
Absolute Maximum Ratings
(T
A
= 25°C)
Supply Voltage (V+ to V-) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V- -0.5V, V+ +0.5V
Supply Turn-on Slew Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1V/s
IN- Input Current (Note 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA
Digital & Analog Input Current (Note 4). . . . . . . . . . . . . . . . . . . . . . . . 50mA
Output Current (Continuous) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA
ESD Rating
Human Body Model (Per MIL-STD-883 Method 3015.7). . . . . . . . . .2.5kV
Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300V
Thermal Information
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Ambient Operating Temperature . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . .-40°C to +125°C
Power Dissipation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
JA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .See Figures 22 and 23 on page 8
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTE:
4. If an input signal is applied before the supplies are powered up, the input current must be limited to these maximum values.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise
noted, all tests are at the specified temperature and are pulsed tests, therefore: T
J
= T
C
= T
A
Electrical Specifications
PARAMETER
V+ = +5V, V- = -5V, GND = 0V, T
A
= 25°C, R
L
= 500 to GND unless otherwise specified.
CONDITIONS
MIN
(NOTE 5)
TYP
MAX
(NOTE 5)
UNIT
DESCRIPTION
GENERAL
±
I
S
Enabled
I
S
Disabled
Supply Current
Disabled Supply Current I+
Disabled Supply Current I-
No load, V
IN
= 0V, ENABLE Low
No load, V
IN
= 0V, ENABLE High
No load, V
IN
= 0V, ENABLE High
V
IN
= 2V, R
L
= 500A
V
= 2
V
IN
= -2V, R
L
= 500A
V
= 2
R
L
= 10 to GND
9.5
0.5
11
1
3
15
1.5
10
mA
mA
A
V
V
OUT
Positive Output Swing
Negative Output Swing
3.5
3.9
-3
-2.8
V
mA
I
OUT
V
OS
Ib+
Ib-
R
out
Output Current
Output Offset Voltage
Input Bias Current
Feedback Bias Current
Output Resistance
80
-12
130
4
-2.5
7
1.4
0.2
10
+12
-1.5
15
mV
A
A
M
M
V
IN
= 0V
-4
-15
HIZ = logic high, (DC), A
V
= 1
HIZ = logic low, (DC), A
V
= 1
R
IN
A
CL
or A
V
I
TRI
Input Resistance
Voltage Gain
Output Current in Three-state
V
IN
= 3.5V
R
F
= R
G
= 600V
OUT
=
3V
V
OUT
= 0V
1.990
-20
2.005
6
2.020
20
V/V
A
LOGIC
V
H
V
L
I
IH
I
IL
Input High Voltage (Logic Inputs)
Input Low Voltage (Logic Inputs)
Input High Current (Logic Inputs)
Input Low Current (Logic Inputs)
55
-10
90
0
2
0.8
135
10
V
V
A
A
AC GENERAL
- 3dB BW
-3dB Bandwidth
A
V
= 1, R
F
= 200, V
OUT
= 400MV
P-P
, C
L
= 5.5pF,
C
G
= 0.6pF
A
V
= 2, R
F
= R
G
= 453, V
OUT
= 2V
P-P
, C
L
= 5.5pF,
C
G
= 0.6pF
420
165
MHz
MHz
FN7459 Rev 2.00
July 3, 2012
Page 3 of 13
ISL59420
Electrical Specifications
PARAMETER
0.1dB BW
V+ = +5V, V- = -5V, GND = 0V, T
A
= 25°C, R
L
= 500 to GND unless otherwise specified. (Continued)
CONDITIONS
A
V
= 1, R
F
= 200, V
OUT
= 100mV
P-P
, C
L
= 5.5pF,
C
G
= 0.6pF
A
V
= 2, R
F
= R
G
= 453, V
OUT
= 2V
P-P
, C
L
= 5.5pF,
C
G
= 0.6pF
MIN
(NOTE 5)
TYP
25
60
0.01
0.05
0.02
0.02
966
1462
788
1171
-60
-68
75
MAX
(NOTE 5)
UNIT
MHz
MHz
%
%
°
°
V/s
V/s
V/s
V/s
dB
dB
DESCRIPTION
0.1dB Bandwidth
dG
Differential Gain Error
NTC-7, R
L
= 150, C
L
= 5.5pF, A
V
= 1
NTC-7, R
L
= 150, C
L
= 5.5pF, A
V
= 2
dP
Differential Phase Error
NTC-7, R
L
= 150, C
L
= 5.5pF, A
V
= 1
NTC-7, R
L
= 150, C
L
= 5.5pF, A
V
= 2
+SR
Slew Rate
25% to 75%, A
V
= 1, V
OUT
= 4V, R
L
= 500, C
L
= 5.5pF
25% to 75%, A
V
= 2, V
OUT
= 5V, R
L
= 500, C
L
= 5.5pF
-SR
Slew Rate
25% to 75%, A
V
= 1, V
OUT
= 4V, R
L
= 500, C
L
= 5.5pF
25% to 75%, A
V
= 2, V
OUT
= 5V, R
L
= 500, C
L
= 5.5pF
PSRR
ISO
Power Supply Rejection Ratio
Channel Isolation
DC, PSRR V+ and V- combined
f = 10MHz, Ch-Ch X-Talk and Off Isolation, C
L
= 5.5pF
SWITCHING CHARACTERISTICS
V
GLITCH
Channel-to-Channel Switching Glitch V
IN
= 0V, C
L
= 5.5pF, A
V
= 2
ENABLE Switching Glitch
HIZ Switching Glitch
t
SW-L-H
t
SW-H-L
V
IN
= 0V, C
L
= 5.5pF, A
V
= 2
V
IN
= 0V, C
L
= 5.5pF, A
V
= 2
36
475
360
24
19
mV
P-P
mV
P-P
mV
P-P
ns
ns
Channel Switching Time Low to High 1.2V logic threshold to 10% movement of analog output
Channel Switching Time High to Low 1.2V logic threshold to 10% movement of analog output
TRANSIENT RESPONSE
t
R,
t
F
Rise & Fall Time, 10% to 90%
A
V
= 1, R
F
= 200, V
OUT
= 100mV
P-P
, C
L
= 5.5pF,
C
G
= 0.6pF
A
V
= 2, R
F
= R
G
= 453, V
OUT
= 2V
P-P
, C
L
= 5.5pF,
C
G
= 0.6pF
t
S
O
S
0.1% Settling Time
Overshoot
A
V
= 2, R
F
= R
G
= 453, V
OUT
= 2V
P-P
, C
L
= 5.5pF,
C
G
= 0.6pF
A
V
= 1, R
F
= 200, V
OUT
= 100mV
P-P
, C
L
= 5.5pF,
C
G
= 0.6pF
A
V
= 2, R
F
= R
G
= 453, V
OUT
= 2V
P-P
, C
L
= 5.5pF,
C
G
= 0.6pF
t
PLH
Propagation Delay - Low to High,
10% to 10%
A
V
= 1, R
F
= 200, V
OUT
= 100mV
P-P
, C
L
= 5.5pF,
C
G
= 0.6pF
A
V
= 2, R
F
= R
G
= 453, V
OUT
= 2V
P-P
, C
L
= 5.5pF,
C
G
= 0.6pF
t
PHL
Propagation Delay- High to Low,
10% to 10%
A
V
= 1, R
F
= 200, V
OUT
= 100mV
P-P
, C
L
= 5.5pF,
C
G
= 0.6pF
A
V
= 2, R
F
= R
G
= 453, V
OUT
= 2V
P-P
, C
L
= 5.5pF,
C
G
= 0.6pF
0.83
1.64
8.8
24
10
0.5
1.01
0.65
1.08
ns
ns
ns
%
%
ns
ns
ns
ns
NOTE:
5. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
FN7459 Rev 2.00
July 3, 2012
Page 4 of 13
ISL59420
Typical Performance Curves
VS = ±5V, RL = 500 to GND, TA = 25°C, unless otherwise specified.
5
4
3
NORMALIZED GAIN (dB)
2
1
0
-1
-2
-3
-4
-5
1
10
FREQUENCY (MHz)
C
L
INCLUDES 1.6pF
BOARD CAPACITANCE
100
1000
C
L
= 1.6pF
A
V
= 1
V
OUT
= 100mV
P-P
R
F
= 200
C
L
= 9.7pF
C
L
= 7.2pF
C
L
= 5.5pF
NORMALIZED GAIN (dB)
5
A
V
= 1
V
OUT
= 100mV
P-P
3 C
L
= 5.5pF
R
F
= 200
2
4
1
0
-1
-2
-3
-4
-5
1
10
100
1000
R
L
= 150
R
L
= 75
R
L
= 500
R
L
= 1k
FREQUENCY (MHz)
FIGURE 2. SMALL SIGNAL GAIN vs FREQUENCY vs C
L
FIGURE 3. SMALL SIGNAL GAIN vs FREQUENCY vs R
L
5
4
3
NORMALIZED GAIN (dB)
2
1
0
-1
-2
-3
-4
-5
1
5
A
V
= 2
V
OUT
= 2V
P-P
R
G
= R
F
= 453
NORMALIZED GAIN (dB)
4
3
2
1
0
-1
-2
-3
-4
-5
10
FREQUENCY (MHz)
100
1000
1
10
R
L
= 150
R
L
= 75
100
R
L
= 1k
R
L
= 500
A
V
= 2
V
OUT
= 2V
P-P
C
L
= 5.5pF
R
G
= R
F
= 453
R
L
= 75
C
L
= 9.7pF
C
L
= 7.2pF
C
L
= 5.5pF
C
L
INCLUDES 1.6pF
BOARD CAPACITANCE
C
L
= 1.6pF
1000
FREQUENCY (MHz)
FIGURE 4. LARGE SIGNAL GAIN vs FREQUENCY vs C
L
FIGURE 5. LARGE SIGNAL GAIN vs FREQUENCY vs R
L
0.8
A =1
0.7 V
V
OUT
= 100mV
P-P
R
F
= 200
0.6
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
1
10
C
L
= 9.7pF
C
L
= 7.2pF
C
L
= 1.6pF
0.8
R
L
= 75
A
V
= 1
V
OUT
= 100mV
P-P
0.6 C
L
= 5.5pF
R
L
= 150
0.5 R
F
= 200
0.7
NORMALIZED GAIN (dB)
0.4
0.3
0.2
0.1
0
-0.1
-0.2
1000
1
10
100
1000
R
L
= 1k
R
L
= 500
NORMALIZED GAIN (dB)
C
L
= 5.5pF
C
L
INCLUDES 1.6pF
BOARD CAPACITANCE
100
FREQUENCY (MHz)
FREQUENCY (MHz)
FIGURE 6. SMALL SIGNAL 0.1dB GAIN vs FREQUENCY vs C
L
FIGURE 7. SMALL SIGNAL 0.1dB GAIN vs FREQUENCY vs R
L
FN7459 Rev 2.00
July 3, 2012
Page 5 of 13
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