Calogic LLC PAD20, PAD5, PAD50, PAD1, PAD10 Datasheet
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Low Leakage
Pico Amp Diodes
PAD1 / PAD2 / PAD5 / PAD10 / PAD20 / PAD50
FEATURES
••
Low Leakage . . . . . . . . . . . . . . . . . . . . . . . . . 1 pA (PAD1)
••
High Breakdow n Range
. . . . . . . . . . . . . . . . . . . -45 V min - 120 V m ax (PAD1, 2, 5)
. . . . . . . . . . . . . . . . . . . . . . -35V min (PAD10, 20, 50, 100)
••
Low Capacitance. . . . . . . . . . . . . . . . . 0.8 pf (P AD1 , 2, 5)
. . . . . . . . . . . . . . . . . . . . . . . . . 2.0 pf (PAD10, 20, 50, 100)
APPLICATIONS
••
High Impeda nce Pr o tec tion De vi ces
••
Fast Diode Sw i tc hin g
••
Clipping Ci r cu it s
DESCRIPTION
Calogic’s series of Pi co Amp Diode s are an excell ent choice for
protection devices where ultra low leakage is critical and must be
at a minimal measurement. The se de vices ha v e a wide operating
voltage range and ar e low capacitanc e for high speed switching
requirements. Housed in a hermetic TO-18 package the
product line is a lso av aila ble in chip form f or hybrid us es.
ORDERING INFORMATION
Part Package Temperature Range
P AD1 -100 Hermetic T O-18 -55
o
C to +150oC
XPAD1 -10 0 Sorted Chips in Carriers -55
o
C to +150oC
CORPORATION
PIN CONFIGU RATION
A
C
SCHEMATIC DIAGRAM
ANODE
CATHODE
BOTTOM VIEW
ANODE
CATHODE
CASE
(CLIPPED)
5007
PAD1 / PAD2 / PAD5 / PAD10 / PAD20 / PAD50
CORPORATION
ABSOLUTE MAXIMUM RATINGS (25oC)
Forward Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Total De vice Dissipat ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 mW
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55
o
C to 125oC
Lead Temperature (1/16" from case f or 10 sec onds ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
o
C
ELECTRICAL CHARACTERI STICS (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
= -1µA
PAD1, 2, 5
-35 PAD10, 20, 50, 100
V
F
Forward Voltage Drop 0.8 1.5 IF = 5 mA PAD1, 2, 5, 10, 20, 50, 100
DYNAMIC
C
R
Capacitance
0.8
pF VR = -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 D2 Common mode
input voltage limit ed by PADS D
3
and D4 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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