Low Leakage
Pico Amp Diodes
PAD1 / PAD2 / PAD5 / PAD10 / PAD20 / PAD50
FEATURES
Low Leakage . . . . . . . . . . . . . . . . . . . . . . . . . 1 pA (PAD1)
High Breakdown Range
. . . . . . . . . . . . . . . . . . . -45 V min - 120 V max (PAD1, 2, 5)
. . . . . . . . . . . . . . . . . . . . . . -35V min (PAD10, 20, 50, 100)
Low Capacitance . . . . . . . . . . . . . . . . . 0.8 pf (PAD1, 2, 5)
. . . . . . . . . . . . . . . . . . . . . . . . . 2.0 pf (PAD10, 20, 50, 100)
APPLICATIONS
High Impedance Protection Devices
Fast Diode Switching
Clipping Circuits
DESCRIPTION
Calogic's series of Pico Amp Diodes are an excellent choice for
protection devices where ultra low leakage is critical and must be
at a minimal measurement. These devices have a wide operating
voltage range and are low capacitance for high speed switching
requirements. Housed in a hermetic TO-18 package the
product line is also available in chip form for hybrid uses.
ORDERING INFORMATION
Part
Package Temperature
Range
PAD1-100
Hermetic TO-18
-55
o
C to +150
o
C
XPAD1-100 Sorted Chips in Carriers
-55
o
C to +150
o
C
CORPORATION
PIN CONFIGURATION
A
C
SCHEMATIC DIAGRAM
ANODE
CATHODE
BOTTOM VIEW
ANODE
CATHODE
CASE
(CLIPPED)
5007
PAD1 / PAD2 / PAD5 / PAD10 / PAD20 / PAD50
CORPORATION
ABSOLUTE MAXIMUM RATINGS (25
o
C)
Forward Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Total Device Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 mW
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55
o
C to 125
o
C
Lead Temperature (1/16" from case for 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
o
C
ELECTRICAL CHARACTERISTICS (25
o
C unless otherwise noted)
SYMBOL
CHARACTERISTICS
MIN
TYP
MAX
UNIT
TEST CONDITIONS
STATIC
I
R
Reverse Current
-1
pA
VR = -20 V
PAD1
-2
PAD2
-5
PAD5
-10
PAD10
-20
PAD20
-50
PAD50
-100
PAD100
BV
R
Breakdown Voltage (Reverse)
-45
-120
V
I
R
= -1
A
PAD1, 2, 5
-35
PAD10, 20, 50, 100
V
F
Forward Voltage Drop
0.8
1.5
I
F
= 5 mA
PAD1, 2, 5, 10, 20, 50, 100
DYNAMIC
C
R
Capacitance
0.8
pF
V
R
= -5 V, f = 1 MHz
PAD1, 2, 5
2
PAD10, 20, 50, 100
APPLICATION
Operational Amplifier Protection. Input Differential Voltage
limited to 0.8 V (typ) by PADS D
1
and D
2
Common mode
input voltage limited by PADS D
3
and D
4
to
15 V.
Typical sample and hold circuit with clipping. PAD diodes
reduce offset voltages fed capacitively from the FET switch
gate.
D
1
D
3
D
4
_
+
1
-15V
+15V
PAD10
D
2
I < 1 pA
R
+V
-V
V
OUT
C
CONTROL SIGNAL
e
in
+
PAD1
PAD1
J110
J210
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