CALOGIC DPAD5 Dual pico amp diode Datasheet

Dual Pico Amp Diodes
CORPORATION
DPAD1 / DPAD2 / DPAD5 / DPAD10 / DPAD20 / DPAD50 / DPAD100
SSTDPAD5 / SSTDPAD10 / SSTDPAD20 / SSTDPAD50 / SSTDPAD100
FEATURES
DESCRIPTION
• High OFF Isolation. . . . . . . . . . . . . . . . . 1 pA max DPAD1
Isolation between diodes. . . . . . Typical 20 fA
• Excellent
• Matched Capacitance
Calogic’s ultra low leakage dual pico amp diodes out perform
conventional diodes for applications where reverse current
(leakage) is critical and must be kept at a minimum. The
devices have very low capacitance and are also fast
switching. Housed in a compact dual hermetic package and a
plastic surface mount SO-8 this product is also available in
chip form for hybrid uses.
APPLICATIONS
• Op Amp Protection Devices
• Diode Switching
• High Impedance Protection
ORDERING INFORMATION
Part
Package
Temperature Range
DPAD1
DPAD2/50
SSTDPAD5/100
XDPAD5/100
Hermetic TO-78
Hermetic TO-71
Plastic SO-8
Sorted Chips in Carriers
-55 to +150oC
-55 to +150oC
-55 to +150oC
-55 to +150oC
PIN CONFIGURATION
TO-71
(MODIFIED)
(PINS 2 AND
6 REMOVED)
N/C
TO-78
(MODIFIED)
(DPAD1 ONLY)
A2
C2
C2
C1
C1
A1
N/C
A 1 C2
A2
C
C1
A2
C2
A1
C2
C1
CASE
C
3
4
2 3
2
A2
A1
SCHEMATIC DIAGRAM
A2
A1
4
1
CJ1, CJ2, CJ4
C2
5
1
C1
C1
BOTTOM VIEW
(ALTERNATE)
BOTTOM VIEW
A
C
C
A
SO-8
DPAD1 / DPAD2 / DPAD5 / DPAD10 / DPAD20 / DPAD50 / DPAD100
SSTDPAD5 / SSTDPAD10 / SSTDPAD20 / SSTDPAD50 / SSTDPAD100
CORPORATION
ABSOLUTE MAXIMUM RATINGS (25oC)
Forward Gate Current, Each Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Total Device Dissipation @ TA = 25oC
Derate 4.0 mW/ oC to 125oC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400 mW
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +125oC
Lead Temperature (1/16" from case for 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300oC
ELECTRICAL CHARACTERISTICS (25oC unless otherwise noted)
SYMBOL
CHARACTERISTICS
MIN
TYP
MAX
UNIT
TEST CONDITIONS
STATIC
-1
DPAD1
-2
DPAD2
-5
IR
Reverse Current
-10
-45
BVR
DPAD10
DPAD20
-50
DPAD50
-100
DPAD100
-120
DPAD1, 2, 5
Breakdown Voltage (Reverse)
Forward Voltage Drop
VR = -20 V
-20
V
-35
VF
DPAD5
pA
0.8
1.5
IR = -1µA
DPAD10, 20, 50, 100
IF = 5 mA
DPAD1, 2, 5, 10, 20, 50, 100
DYNAMIC
0.8
CR
Capacitance
DPAD1, 2, 5
pF
VR = -5 V, f = 1 MHz
2.0
| CR1 - CR2 | Differential Capacitance
0.1
0.2
DPAD10, 20, 50, 100
pF
IR < 1 pA
DPAD10
_
D1
D2
+15V
+V
DPAD1
DPAD1, 2, 5, 10, 20, 50, 100
-V
+
DPAD1
J210
1
+
D3
VR1 = VR2 = -5 V, f = 1 MHz
J110
e in
D4
-15V
VOUT
C
CONTROL SIGNAL
APPLICATION
Operational Amplifier Protection. Input Differential Voltage
limited to 0.8 V (typ) by DPADS D1 and D2 Common mode
input voltage limited by DPADS D3 and D4 to ±15V.
Typical sample and hold circuit with clipping, DPAD diodes
reduce offset voltages fed capacitively from the FET switch
gate.
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