DATASHEET
ISL59424, ISL59445
1GHz Triple Multiplexing Amplifiers
The ISL59424, ISL59445 are 1GHz bandwidth multiplexing
amplifiers designed primarily for video input switching.
These MUX-amps exhibit a fixed gain of 1 and also feature a
high speed three-state 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 EN pin, when pulled
high, sets the ISL59424, ISL59445 in to low current
mode-consuming just 15mW. An added feature in the
ISL59424 is a latch enable function (LE) that allows
independent logic control using a common logic bus. When
LE is high the last logic state is preserved
.
TABLE 1. CHANNEL SELECT LOGIC TABLE ISL59424
S0
0
1
X
X
X
ENABLE
0
0
1
0
0
HIZ
0
0
X
1
0
LE
0
0
X
X
1
OUTPUT
INO (A, B, C)
IN1 (A, B, C)
Power Down
High Z
Last S0 State
Preserved
FN7456
Rev 3.00
September 30, 2011
Features
• Triple 2:1 and 4:1 Multiplexers for RGB
• Internally Set Gain-of-1
• High Speed Three-state Outputs (HIZ)
• Power-down Mode (EN)
• Latch Enable (ISL59424)
• ±5V Operation
• ±1200 V/µsec Slew Rate
• 1GHz Bandwidth
• Latched Select Pin (ISL59424)
• Pb-Free (RoHS Compliant)
Applications
• HDTV/DTV Analog Inputs
• Video Projectors
• Computer Monitors
• Set-top Boxes
• Security Video
• Broadcast Video Equipment
TABLE 2. CHANNEL SELECT LOGIC TABLE ISL59445
S1
0
0
1
1
X
X
S0
0
1
0
1
X
X
ENABLE
0
0
0
0
1
0
HIZ
0
0
0
0
X
1
OUTPUT
IN0 (A, B, C)
IN1 (A, B, C)
IN2 (A, B, C)
IN3 (A, B, C)
Power Down
High Z
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
ISL59424IRZ
ISL59424IRZ-T13
ISL59424IRZ-T7
ISL59445IRZ
ISL59445IRZ-T13
ISL59445IRZ-T7
ISL59445IRZ-EVAL
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
ISL59424
and
ISL59445.
For more
information on MSL please see techbrief
TB363.
4. 32 LD QFN Exposed Pad Size 2.48 x 3.40mm.
PART
MARKING
59424 IRZ
59424 IRZ
59424 IRZ
59445 IRZ
59445 IRZ
59445 IRZ
PACKAGE
(Pb-Free)
24 Ld QFN
24 Ld QFN
24 Ld QFN
32 Ld QFN
32 Ld QFN
32 Ld QFN
PKG.
DWG. #
MDP0046
MDP0046
MDP0046
L32.5x6A
L32.5x6A
L32.5x6A
Evaluation Board
FN7456 Rev 3.00
September 30, 2011
Page 1 of 14
ISL59424, ISL59445
Pinouts
ISL59424
(24-LD QFN)
TOP VIEW
24 GNDA
32 GNDA
31 IN0A
23 IN0A
22 NIC
21 NIC
20 HIZ
ISL59445
(32-LD QFN)
TOP VIEW
29 IN0B
27 IN0C
30 NIC
28 NIC
26 HIZ
25 ENABLE
24 NIC
23 V+
A=1
NIC 4
IN1C 5
GNDB 6
IN2A 7
NIC 8
IN2B 9
IN2C 10
GNDC 11
IN3A 12
NIC 13
IN3B 14
NIC 15
IN3C 16
A=1
THERMAL
PAD
22 OUTA
21 V-
20 OUTB
19 OUTC
18 S0
17 S1
IN0B 1
NIC 2
IN0C 3
GNDB 4
IN1A 5
GNDC 6
IN1B 7
NIC 8
IN1C 9
THERMAL
PAD
NIC 10
A=1
NIC 11
LE 12
A=1
A=1
19 ENABLE
18 OUTA
17 V+
16 OUTB
15 V-
14 OUTC
13 S0
IN1A 1
NIC 2
IN1B 3
A=1
THERMAL PAD INTERNALLY CONNECTED TO V-.
PAD MUST BE TIED TO V-
LATCHED ON HIGH LE
NIC = NO INTERNAL CONNECTION
THERMAL PAD INTERNALLY CONNECTED TO V-.
PAD MUST BE TIED TO V-
NIC = NO INTERNAL CONNECTION
Functional Diagram ISL59424
S0
EN0
DECODE
D
L
Q
C
Functional Diagram ISL59445
EN0
S0
EN1
S1
DECODE
IN0 (A, B, C)
IN1 (A, B, C)
EN2
EN3
IN2 (A, B, C)
IN3 (A, B, C)
OUT
IN0 (A, B, C)
OUT
EN1
D
L
Q IN1 (A, B, C)
C
AMPLIFIER BIAS
LE
HIZ
HIZ
ENABLE
A LOGIC HIGH ON LE WILL LATCH THE LAST S0 STATE.
THIS LOGIC STATE IS PRESERVED WHEN CYCLING HIZ
OR ENABLE FUNCTIONS.
ENABLE
AMPLIFIER BIAS
FN7456 Rev 3.00
September 30, 2011
Page 2 of 14
ISL59424, ISL59445
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/µs
Digital & Analog Input Current (Note 5) . . . . . . . . . . . . . . . . . . 50mA
Output Current (Continuous) . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA
ESD Rating
Human Body Model (Per MIL-STD-883 Method 3015.7). . . .2500V
Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300V
Thermal Information
Thermal Resistance (Typical, Notes 6, 7)
JA
(°C/W)
JC
(°C/W)
24 Ld QFN . . . . . . . . . . . . . . . . . . . . . .
46
10
32 Ld QFN . . . . . . . . . . . . . . . . . . . . . .
46
10
Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C
Ambient Operating Temperature . . . . . . . . . . . . . . . .-40°C to +85°C
Operating Junction Temperature . . . . . . . . . . . . . . .-40°C to +125°C
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.
NOTES:
5. If an input signal is applied before the supplies are powered up, the input current must be limited to these maximum values.
6.
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
7. For
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
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
GENERAL
I
S
Enabled
V+ = +5V, V- = -5V, GND = 0V, T
A
= +25°C, V
IN
= 1V
P-P
& R
L
= 500 to GND unless otherwise specified.
CONDITIONS
MIN
TYP
MAX
UNIT
DESCRIPTION
Enabled Supply Current (ISL59424)
No load, V
IN
= 0V, Enable Low, I
S
+
No load, V
IN
= 0V, Enable Low, I
S
-
35
-40
47
-57
2
-50
-3.4
8
-35
±3.2
±80
-13
39
-36
53
-50
3
0
-2.2
15
0
±3.4
±130
3
1.0
0.2
10
0.99
43
-32
60
-44
4
-
-1.4
22
35
-
-
13
-
-
-
1.0
mA
mA
mA
mA
mA
µA
µA
µA
µA
V
mA
mV
M
M
V/V
Enabled Supply Current (ISL59445)
No load, V
IN
= 0V, Enable Low, I
S
+
No load, V
IN
= 0V, Enable Low, I
S
-
+I
S
Disabled
Disabled Supply Current
Enable High, I
S
+
Enable High, I
S
-
I
b
I
TRI
Input Bias Current
Bias current into output, HIZ mode
V
IN
= 0
ISL59424 - V
OUT
= +5V
ISL59445 - V
OUT
= 0V
V
OUT
I
OUT
V
OS
R
OUT
R
OUT
R
IN
A
CL
or A
V
LOGIC
V
IH
V
IL
I
IH
I
IL
AC GENERAL
PSRR
Positive and Negative Output Swing
Output Current
Offset Voltage
HIZ Output Resistance
Enabled Output Resistance
Input Resistance
Voltage Gain
V
IN
= ±3.5V
R
L
= 10 to GND
HIZ = Logic High
HIZ = Logic Low
V
IN
= ±3.5V
V
IN
= ±1.5V
-
-
-
0.98
Input High Voltage (Logic Inputs)
Input Low Voltage (Logic Inputs)
Input High Current (Logic Inputs)
Input Low Current (Logic Inputs)
V
H
= 5V
V
L
= 0V
2
-
235
-
-
-
270
1
-
0.8
320
3
V
V
µA
µA
Power Supply Rejection Ratio
(ISL59424)
Power Supply Rejection Ratio
(ISL59445)
DC, PSRR V+ and V- combined
DC, PSRR V+ and V- combined
60
50
73
57
-
-
dB
dB
FN7456 Rev 3.00
September 30, 2011
Page 3 of 14
ISL59424, ISL59445
Electrical Specifications
PARAMETER
ISO
V+ = +5V, V- = -5V, GND = 0V, T
A
= +25°C, V
IN
= 1V
P-P
& R
L
= 500 to GND unless otherwise specified.
CONDITIONS
f = 10MHz, C
L
= 0.5pF, V
IN
= -6dBm
MIN
-
-
f = 10MHz, C
L
= 0.5pF, V
IN
= -6dBm
-
-
NTC-7, R
L
= 150, C
L
= 0.5pF
NTC-7, R
L
= 150, C
L
= 0.5pF
C
L
= 0.5pF
C
L
= 0.5pF
CL = 1.5pF
-
-
-
-
-
TYP
80
75
75
70
0.02
0.02
1000
130
200
MAX
-
-
-
-
-
-
-
-
-
UNIT
dB
dB
dB
-
%
°
MHz
MHz
MHz
DESCRIPTION
Channel Isolation (ISL59424)
Channel Isolation (ISL59445)
Xtalk
Channel Cross Talk (ISL59424)
Channel Cross Talk (ISL59445)
dG
dP
BW
FBW
Differential Gain Error
Differential Phase Error
-3dB Bandwidth
0.1dB Bandwidth
0.1dB Bandwidth
SWITCHING CHARACTERISTICS
SR
V
GLITCH
ISL58424
V
GLITCH
ISL59445
t
SW-L-H
t
SW-H-L
tr
tf
tpd
t
S
t
LH
Slew Rate
Channel-to-Channel Switching Glitch
Enable Switching Glitch
HIZ Switching Glitch
Channel-to-Channel Switching Glitch
Enable Switching Glitch
HIZ Switching Glitch
Channel Switching Time Low-to-High
Channel Switching Time High-to-Low
Rise Time
Fall Time
Propagation Delay
0.1% Settling Time
Latch Enable HoldTime
25% to 75%, R
L
= 150, Input Enabled,
C
L
= 1.5pF, V
IN
= ±1V
V
IN
= 0V, C
L
= 0.5pF
V
IN
= 0V, C
L
= 0.5pF
V
IN
= 0V, C
L
= 0.5pF
V
IN
= 0V, C
L
= 0.5pF
V
IN
= 0V, C
L
= 0.5pF
V
IN
= 0V, C
L
= 0.5pF
1.2V logic threshold to 10% movement of
analog output
1.2V logic threshold to 10% movement of
analog output
10% to 90%
10% to 10%
10% to 10%
Step = 1V
LE = 0V
-
-
-
-
-
-
-
-
-
-
-
-
-
-
±1200
40
300
200
20
200
200
15
15
600
800
600
6
10
-
-
-
-
-
-
-
-
-
-
-
-
-
-
V/µs
mV
P-P
mV
P-P
mV
P-P
mV
P-P
mV
P-P
mV
P-P
ns
ns
ps
ps
ps
ns
ns
Typical Performance Curves
V
S
= ±5V, R
L
= 500 to GND, T
A
= +25°C, unless otherwise specified.
10
8
6
NORMALIZED GAIN (dB)
4
2
0
-2
-4
-6
-8
1
C
L
INCLUDES 0.5pF
BOARD CAPACITANCE
10
100
1k 1.2k
C
L
= 0.5pF
SOURCE
POWER = -12dBm
C
L
= 8.7pF
C
L
= 5.2pF
C
L
= 2.7pF
C
L
= 1.5pF
NORMALIZED GAIN (dB)
C
L
= 3.8pF
5
4
3
2
1
0
-1
-2
-3
-4
-5
1
10
100
R
L
= 150
R
L
= 100
1k 1.2k
R
L
= 500
SOURCE
POWER = -12dBm
R
L
= 1k
-10
FREQUENCY (MHz)
FREQUENCY (MHz)
FIGURE 1. GAIN vs FREQUENCY vs C
L
FIGURE 2. GAIN vs FREQUENCY vs R
L
FN7456 Rev 3.00
September 30, 2011
Page 4 of 14
ISL59424, ISL59445
Typical Performance Curves
V
S
= ±5V, R
L
= 500 to GND, T
A
= +25°C, unless otherwise specified.
0.2
SOURCE
0.1 POWER = -12dBm
NORMALIZED GAIN (dB)
0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
1
10
100
1k 1.2k
0.1
0.1
1
10
C
L
= 0.5pF
C
L
= 1.5pF
C
L
= 2.0pF
OUTPUT RESISTANCE ()
100
SOURCE
POWER = -12dBm
(Continued)
ISL59424
10
ISL59445
1
100
1k
FREQUENCY (MHz)
FREQUENCY (MHz)
FIGURE 3. 0.1dB GAIN vs FREQUENCY
0.8
0.6
OUTPUT VOLTAGE (V)
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
TIME (5ns/DIV)
R
L
= 500
C
L
= 1.5pF
OUTPUT VOLTAGE (V)
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
FIGURE 4. R
OUT
vs FREQUENCY
R
L
= 500
C
L
= 1.5pF
TIME (5ns/DIV)
FIGURE 5. ISL59424 TRANSIENT RESPONSE
0
-10
-20
-30
-40
(dB)
-50
-60
-70
-80
-90
-100
0.1
1
10
100
1k
OFF-ISOLATION
INPUT X TO OUTPUT X
(dB)
INPUT X TO OUTPUT Y
CROSSTALK
FIGURE 6. ISL59445 TRANSIENT RESPONSE
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0.1
1
10
FREQUENCY (MHz)
100
1k
OFF-ISOLATION
INPUT X TO OUTPUT X
INPUT X TO OUTPUT Y
CROSSTALK
FREQUENCY (MHz)
FIGURE 7. ISL59424 CROSSTALK AND
OFF-ISOLATION
FIGURE 8. ISL59445 CROSSTALK AND
OFF-ISOLATION
FN7456 Rev 3.00
September 30, 2011
Page 5 of 14
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