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 = -1A 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.