DATA SHEET CDC7630/7631 and DDC2353/2354 Series: Zero Bias Silicon Schottky Barrier Detector Diodes Applications Microwave integrated circuits Detectors Features High sensitivity Low video impedance Skyworks Green products are compliant with all applicable legislation and are halogen-free. For additional information, refer to Skyworks Denition of Green, document number SQ04-0074. Description Applications Skyworks bare die and beam-lead zero-bias Schottky barrier The CDC and DDC series of zero-bias Schottky diodes are detector diodes are designed for applications through the K band. designed for detector applications through 26 GHz and are useful The choice of barrier metal and process techniques results in a up to 40 GHz. They require no bias and operate efficiently even at group of diodes with a wide selection of video impedance ranges. tangential signal power levels. Since they require no bias, noise is at a minimum. A low video impedance means a short R-C time The CDC and DDC series of Schottky diodes are especially well constant and, therefore, wide video bandwidth and excellent pulse suited for use in Microwave Integrated Circuit (MIC) applications fidelity. where the chip and wire approach is desirable. Mounted beam- lead diodes can be easily used in MIC, stripline, or other such As power monitors, these diodes may also be used to directly drive circuitry. metering circuits even at low power input levels. These diodes are categorized by Tangential Signal Sensitivity (TSS), voltage output, and video impedance for detector applications. TSS is a parameter that best describes the use of a diode as a video detector. It is defined as the amount of signal power, below a one milliwatt reference level, required to produce an output pulse with an amplitude sufficient to raise noise fluctuations by an amount equal to the average noise level. TSS is approximately 4 dB above the minimum detectable signal. Voltage output is another useful parameter since it can be used in the design of threshold detectors and power monitor circuits. Since voltage output is a function of the diodes video impedance, a different minimum value is specified for each video impedance range. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 200843I Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice September 8, 2014 1 SILICON SCHOTTKY BARRIER DIODES The broadband low-sensitivity circuit would be used where a low Electrical and Mechanical Specifications input VSWR is required. In this circuit, low VSWR is accomplished by The absolute maximum ratings for the CDC and DDC series of the use of the 50 terminating resistor. Sensitivity, however, is Schottky diodes are provided in Table 1. Electrical and physical degraded by typically 10 dB from the multi-octave, high-sensitivity specifications are provided in Table 2. SPICE model parameters circuit. The most common use for this circuit is in a broadband, flat for the CDC7630/7631 series are defined in Table 3. detector used primarily in the laboratory. Typical performance characteristics are shown in Figures 1 Package dimensions are provided in Figures 10 and 11. Additional through 8. Typical video detector circuits are shown in Figure 9. bonding and handling methods are contained in the Skyworks The multi-octave, high-sensitivity circuit would be used in Electronic Application Notes, Waffle Pack Chip Carrier Handling/Opening Countermeasures (ECM) and similar applications. An RF matching Procedure (document 200146) and Diode Chips, Beam-Lead structure that presents maximum power at the diode junction must Diodes, Capacitors: Bonding Methods and Packaging (document be incorporated to ensure maximum sensitivity. 200532). Table 1. CDC7630/7631 and DDC2353/2354 Diode Series Absolute Maximum Ratings (Note 1) Parameter Symbol Minimum Maximum Units Reverse voltage VR 2 V Forward current IF 100 mA RF input power T = 25 C PD 75 mW A Storage temperature TSTG 60 +200 C Operating temperature TA 55 +150 C Electrostatic discharge: ESD Human Body Model (HBM), Class 0 <250 V Note 1: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device. CAUTION: Although this device is designed to be as robust as possible, electrostatic discharge (ESD) can damage this device. This device must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all times. Table 2. CDC7630/7631 and DDC2353/2354 Diode Series Electrical Specifications (Note 1) (TA = +25 C, Characteristic Impedance ZO = 50 , Unless Otherwise Noted) Min. Detected Output Video Impedance, ZV Max. TSS Outline Part Number Voltage, EO () (dBm) Drawing (mV) DDC2353-000 8 2000 to 6500 52 491-006 DDC2354-000 15 5000 to 15000 56 491-006 CDC7630-000 8 2000 to 6500 52 571-006 CDC7631-000 15 5000 to 15000 56 571-006 Note 1: Performance is guaranteed only under the conditions listed in this table. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 September 8, 2014 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 200843I