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| Dual Pico Amp Diodes CORPORATION DPAD1 / DPAD2 / DPAD5 / DPAD10 / DPAD20 / DPAD50 / DPAD100 SSTDPAD5 / SSTDPAD10 / SSTDPAD20 / SSTDPAD50 / SSTDPAD100 FEATURES * High OFF Isolation. . . . . . . . . . . . . . . . . 1 pA max DPAD1 Isolation between diodes. . . . . . Typical 20 fA * ExcellentCapacitance * Matched * Op Amp Protection Devices * Diode Switching * High Impedance Protection DESCRIPTION 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. ORDERING INFORMATION Part DPAD1 DPAD2/50 SSTDPAD5/100 XDPAD5/100 Package Temperature Range -55 to +150oC -55 to +150oC -55 to +150oC -55 to +150oC Hermetic TO-78 Hermetic TO-71 Plastic SO-8 Sorted Chips in Carriers APPLICATIONS PIN CONFIGURATION TO-71 (MODIFIED) (PINS 2 AND 6 REMOVED) TO-78 (MODIFIED) (DPAD1 ONLY) N/C A2 C2 C2 C1 C1 A1 N/C SO-8 A 1 C2 A2 C1 C2 3 2 A1 1 A2 4 C C2 A1 A2 C1 CASE C 23 A1 C2 4 A2 5 1 C1 CJ1, CJ2, CJ4 C1 BOTTOM VIEW (ALTERNATE) BOTTOM VIEW SCHEMATIC DIAGRAM A C C A 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 STATIC -1 -2 -5 IR Reverse Current -10 -20 -50 -100 -45 BVR VF DYNAMIC 0.8 CR Capacitance 2.0 | CR1 - CR2 | Differential Capacitance 0.1 0.2 pF VR1 = VR2 = -5 V, f = 1 MHz pF VR = -5 V, f = 1 MHz DPAD10, 20, 50, 100 DPAD1, 2, 5, 10, 20, 50, 100 DPAD1, 2, 5 Breakdown Voltage (Reverse) -35 Forward Voltage Drop 0.8 1.5 V -120 IR = -1A DPAD10, 20, 50, 100 IF = 5 mA DPAD1, 2, 5, 10, 20, 50, 100 pA VR = -20 V DPAD1 DPAD2 DPAD5 DPAD10 DPAD20 DPAD50 DPAD100 DPAD1, 2, 5 CHARACTERISTICS MIN TYP MAX UNIT TEST CONDITIONS DPAD10 _ D1 D3 +15V D2 + D4 -15V e in IR < 1 pA DPAD1 +V -V DPAD1 + 1 J110 C CONTROL SIGNAL J210 VOUT 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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