Vishay LH1514AAC Solid state relay high frequency Datasheet

LH1514AB/AAC/AACTR
2 Form A
Solid State Relay
High Frequency
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
Package Dimensions in Inches (mm)
Load Voltage, 15 V
Load Current, 150 mA
Switching Capability up to 50 MHz
Blocking Capability Dependent upon
Signal dv/dt
Low and Typical RON 5.0 Ω
1.0 ms Actuation Time
Low Power Consumption
3750 VRMS I/O Isolation
Balanced Switching
Linear AC/DC Operation
Clean, Bounce-free Switching
Surface-mountable
DIP
pin one ID
4
3
• UL – File No. E52744
• CSA – Certification 093751
• VDE 0884 Approval
5
6
Part Identification
Part Number
Description
LH1514AB
8-pin DIP, Tubes
LH1514AAC
8-pin SMD, Gullwing, Tubes
LH1514AACTR
8-pin SMD, Gullwing, Tape and
Reel
Document Number: 83814
Revision 17-August-01
7
S1'
S2
S2'
8
7
6
5
.045 (1.14)
.030 (0.76)
S1
S1'
S2
S2'
8
1
.390 (9.91)
.379 (9.63)
2
3
4
.300 (7.62)
.031 (0.79)
typ.
4° typ.
.150 (3.81)
.130 (3.30)
.050 (1.27)
10°
.035 (.89)
.020 (.51)
.250 (6.35)
.230 (5.84)
3°–9°
.012 (.30)
.008 (.20)
.100 (2.54) typ.
.130 (3.30)
.110 (2.79)
SMD
Pin one I.D.
APPLICATIONS
• Protection Switching (T1 sparing)
– Digital Access Cross Connects
– D-type Channel Breaks
– Intraoffice Data Routing
• Transmission Switching
– T1 Multiplexing
– DSO (64 Kbits/s)
– DS1 (1.544 Mbits/s)
– E1, DS1A (2.048 Mbits/s)
– DS1C (3.152 Mbits/s)
– DS2 (6.312 Mbits/s)
• Instrumentation
– Scanners
– Testers
– Measurement Equipment
• See Application Note
S1
.268 (6.81)
.255 (6.48)
.022 (.56)
.018 (.46)
AGENCY APPROVALS
1
2
.268 (6.81)
.255 (6.48)
.390 (9.91)
.379 (9.63)
.045 (1.14)
.030 (0.78)
4°
typ.
.050
(1.27)
typ.
.031 (.79)
typ.
.150 (3.81)
.130 (3.30)
Radius
.008 (.25)
.004 (.10) .040 (1.02)
.020 (.51)
.100 (2.54)
typ.
.395 (10.03)
.375 (9.52)
.312 (7.80)
.298 (7.52)
10°
.315
(8.00)
typ.
3° to 7°
.010
(2.54)
typ.
DESCRIPTION
The LH1514 is a DPST normally open (2 Form A) SSR that can be
used in balanced high-frequency applications like T1 switching. With
its low ON-resistance and high actuation rate, the LH1514 is also very
attractive as a general-purpose 2 Form A SSR for balanced signals.
The relays are constructed using a GaAlAs LED for actuation control
and an integrated monolithic die for the switch output. The die, fabricated in a dielectrically isolated Smart Power BiCMOS, is comprised
of a photodiode array, switch control circuitry, and NMOS switches.
In balanced switching applications, internal circuitry shunts high-frequency signals between two poles when the SSR is off. This balanced T termination technique provides high isolation for the load.
www.vishay.com
3–72
Absolute Maximum Ratings, TA=25°C
Recommended Operating Conditions
Parameter
Sym.
Min.
Typ.
Max. Unit
LED Forward
Current for Switch
Turn-on
(TA=–40°C to
+85°C)
IFon
10
—
20
mA
Stresses in excess of the Absolute Maximum Ratings can cause permanent
damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of
those given in the operational sections of the data sheet. Exposure to maximum
rating conditions for extended periods can adversely affect device reliability.
Ambient Operating Temperature Range, TA .................. –40° to +85°C
Storage Temperature Range, Tstg ................................ –40° to +150°C
Pin Soldering Temperature, t=10 s max, TS ................................ 260°C
Input/Output Isolation Voltage, VISO .....................................3750 VRMS
LED Input Ratings:
Continuous Forward Current, IF...............................................50 mA
Reverse Voltage, IR≤10 µA, VR ...................................................10 V
Output Operation:
dc or Peak ac Load Voltage, IL≤1.0 µA, VL ................................15 V
Continuous dc Load Current, IL
Each Pole, Two Poles Operating Simultaneously .................150 mA
Power Dissipation, PDISS ..........................................................600 mW
Electrical Characteristics, TA=25°C
Minimum and maximum values are testing requirements. Typical values are characteristics of the device and are the result of engineering evaluations. Typical values are for information purposes only and are not part of the testing requirements.
Parameter
Symbol
Min.
Typ.
Max.
Unit
Test Condition
LED Forward Current, Switch Turn-on
IFon
—
2.0
5.0
mA
IL=100 mA, t=10 ms
LED Forward Current, Switch Turn-off
IFoff
0.2
1.8
—
mA
VL=±10 V
LED Forward Voltage
VF
1.15
1.26
1.45
V
IF=10 mA
ON-resistance
RON
2.0
3.0
5.0
Ω
IF=10 mA, IL=±50 mA
Pole-to-pole ON-resistance Matching (S1 to S2)
—
—
0.2
1.0
DΩ
IF=10 mA, IL=±50 mA
Output Off-state Bleed-through*
—
—
70
100
mVpeak
f=1.5 MHz square wave
tr/tf=5.0 ns
(See Figure 13.)
Output Off-state Leakage
—
—
3x10–12 200x10–9 A
20x10–12 1.0x10–6 A
Output Off-state Leakage Pole to Pole
—
—
1.0
5.0
µA
IF=0 mA, VL=±5.0 V
VL=±15 V
IF=10 mA
Pins 7, 8 ±3.0 V
Pins 5, 6 Gnd
Output Capacitance Pins 5 to 6, 7 to 8
—
Pole-to-pole Capacitance (S1 to S2)
—
—
2.0
50
µA
Pins 7, 8 ±15 V
Pins 5, 6 Gnd
—
20
—
pF
IF=0 mA, VL=0
—
—
20
50
—
—
pF
pF
IF=0 mA, VL=0 V
IF=10 mA, VL=0 V
Turn-on Time
ton
—
0.4
1.0
ms
IF=10 mA, IL=20 mA
Turn-off Time
toff
—
0.6
1.0
ms
IF=10 mA, IL=20 mA
* Guaranteed by component measurement during wafer probe.
Document Number: 83814
Revision 17-August-01
www.vishay.com
3–73
Typical Performance Characteristics
Figure 1. LED Forward Current for Switch Turn-on/off
Figure 4. Breakdown Voltage Distribution Typical
3.5
100
IL=100 mA
n=180
80
3.0
60
2.5
%
LED Forward Current (mA)
4.0
2.0
40
1.5
20
1.0
0.5
–40
0
–20
0
20
40
60
10
80
15
Ambient Temperature (°C)
30
Figure 5. Output Isolation
25
100
VP=10 V
RL=50 Ω
20
80
Isolation (dB)
Leakage Current (pA)
25
Breakdown Voltage (V)
Figure 2. Leakage Current vs. Applied Voltage
15
10
5
60
40
20
0
105
0
0
4
8
12
16
20
106
107
108
Frequency (Hz)
Applied Voltage (V)
Figure 3. ON-Resistance vs. Temperature
Figure 6. Insertion Loss (per Pole) vs. Frequency
8
0.5
6
0.4
4
Insertion Loss (dB)
Change in On-resistance (%)
Normalized to 25°C
20
2
0
–2
0.3
0.2
0.1
–4
–6
–40
RL=90 Ω
–20
0
20
40
Ambient Temperature (°C)
Document Number: 83814
Revision 17-August-01
60
80
0
10 2
10 4
106
108
Frequency (Hz)
www.vishay.com
3–74
Figure 9. ton/toff vs. Temperature
Figure 7. ton vs. LED Forward Current
1.1
10
toff
IL=20 mA
1.0
Turn-on/off Time (ms)
Turn-on Time (ms)
8
85°C
6
25°C
4
–40°C
2
0.9
0.8
0.7
0.6
0.5
ton
0.4
0
0
10
20
30
40
0.3
–40
50
0
–20
60
80
Ambient Temperature (°C)
LED Forward Current (mA)
Figure 10. toff vs. LED Forward Current
Figure 8. Bleed-through Voltage vs. Rise Time
1.2
100
IL=20 mA
–40°C
1.0
80
Turn-off Time (ms)
Peak Bleedthrough Voltage (mV)
40
20
60
40
0.8
25°C
0.6
85°C
0.4
20
0.2
0
0
5
10
15
20
Rise Time (ns)
Document Number: 83814
Revision 17-August-01
25
30
0
10
20
30
40
50
LED Forward Current (mA)
www.vishay.com
3–75
Figure 11. Pin Diagram and Pin Outs
Functional Description
Figure 12 shows the switch characteristics of the relay. The
relay exhibits an ON-resistance that is exceptionally linear up
to the knee current (IK). Beyond IK, the incremental resistance
decreases, minimizing internal power dissipation.
CONTROL +
1
CONTROL +
2
8
S1
7
S1'
DPST
In a 2 Form A relay, to turn the relay on, forward current is
applied to the LED. The amount of current applied determines
the amount of light produced for the photodiode array.
This photodiode array develops a drive voltage for both NMOS
switch outputs. For high-temperature or high-load current
operations, more LED current is required.
CONTROL–
3
6
S2
BLANK
4
5
S2'
Figure 12. Typical ON Characteristics
For high-frequency applications, the LH1514 must be wired as
shown in the Figure 15 application diagram to minimize transmission crosstalk and bleed-through. A single LH1514 package switches a single transmit twisted pair or a single receive
twisted pair. In this configuration when the SSR is turned off,
the SSR parries high-frequency signals by shunting them
through the SSR, thereby isolating the transformer load.
+I
150 mA
IL(max)
4.0 Ω
IK
60 mA
When switching alternate mark inversion (AMI) coding transmission, the most critical SSR parameter is dv/dt bleedthrough. This bleed-through is a result of the rise and fall time
slew rates of the 3.0 V AMI pulses. The test circuit in Figure 13
illustrates these bleed-through glitches. It is important to recognize that the transmission limitations of the LH1514 are
bleed-through related and not frequency related. The maximum frequency the LH1514 SSR can switch will be determined
by the pulse rise and fall times and the sensitivity of the receive
electronics to the resultant bleed-through.
5.0 Ω
–0.3 V
0.3 V
–V
IK
IL(max)
+V
–60 mA
–150 mA
At data rates above 2.0 Mbits/s, the 50 pF pole-to-pole capacitance of the LH1514 should be considered when analyzing the
load match to the transmission line. Please refer to the T1
Switching with the LH1514 SSR Application Note for further
information on load-matching and off-state blocking.
–I
Test Circuit
Figure 13. Off-state Bleed-through
tr 5.0 ns
tf 5.0 ns
NC
1
8
NC
2
7
50 Ω*
3.0 V
NC
3
6
NC
4
5
f = 1.5 MHz
100 mV
max
100 mV
max
* 50 Ω load is derived from T1 applications where a 100 Ω load is paralleled with a 100 Ω line.
Document Number: 83814
Revision 17-August-01
www.vishay.com
3–76
Applications
Figure 14. Protection Switching Application: T1 Interface Operating; Spare in Test Loopback Mode
T1
INTERFACE 1
INTERFACE
SPARE
LH1514
LH1514
LH1514
LH1514
LH1514
LH1514
INTERFACE
2
(ETC.)
LH1514
LH1514
LH1514
T1 LINE 1
Figure 15. T1 Multiplexer Receive Data (Interface 1, Operating) Features
LH1514
1:2
100 Ω Z0
164 Ω
800 Ω
RECEIVE
DATA
90 Ω
INTERFACE
1
LINE
INTERFACE
LH1514
1:2
164 Ω
Document Number: 83814
Revision 17-August-01
800 Ω
INTERFACE
2
www.vishay.com
3–77
Similar pages