Fi Alpha Pin Switching Diodes CSB7XXX, CSN92XX, CSG7203, CSG7204 Series Features @ Optimized for a Wide Range of Applications Low Lifetime, Low Resistance for Medium Power @ Longer Lifetime, Low Resistance for Medium Power Low Lifetime, High Resistance for Attenuators and Modulators Long Lifetime for Very Low Frequency Attenuators and Switches @ Four Junction NIP Chips for MulttThrow Switches High Reverse Breakdown Available for Multi- Kilowatt, Long Pulse Length Systems Description Alphas PIN chips are supplied in chip or packaged form for all types of low-loss applications in stripline, microstrip, coaxial, and waveguide circuits. They are siliconoxide passivated for highest reliability and are also available in hermetically sealed metalceramic and glass packages for use in extreme environmental conditions. Alphas High Voltage PIN diodes are passivated with not only the siliconoxide, but also a layer of hard glass. There are four basic type of RF _ switching applications, and Alpha offers diodes optimized for each type. Fast Switching Diodes Diodes for these applications have thin |-regions and low lifetime. Switching speed is under 5 ns, and the diodes have low series resistance at low bias current, offering a steep isolation versus bias characteristics. Suitable for 0.1 to 26 GHz at low power. Maximum Ratings Storage Temperature: -65C to +200C Operating Temperature: -65C to + 175C Slower Switching These diodes have moderately thick |-regions and longer lifetime. They also have a steep isolation curve, but switch in 20 to 100 ns and can be used with low distortion at power levels to +30 dBm. High Speed Modulators and Attenuators These are low lifetime, thick I-region diodes with gradual isolation curves, making them more suitable for continuously variable attenuators. Low lifetime makes them ideal for switches or attenuators with high modulation rates. Low Frequency Attenuators and Switches For these applications, Alpha has developed thick I-region, long lifetime diodes. Minority cartier lifetime to 10 us makes them suitable down to 100 MHz. They are also suitable for higher power pulsed or CW switches, duplexers, and phase shifters. ALPHA INDUSTRIES, INC. 20 SYLVAN ROAD, WOBURN, MA 01801 TEL: {617) 935-5150 FAX: (617) 935-4939 5-37- UW ww vw ee tO = CSB7XXX, CSN92XX, CSG7203, CSG7204 Series In the case of the multi-junction NIP chips, it can serve as the series diode for each of the ports of a multi-throw switch section. In theoff state, the low capacitance of the diode provides high isolation between ports. In the on state, the forward biased resistance of the diode is low enough to provide low insertion loss. The physical proximity of the junctions compared to Figure 1. Zero or Reverse Bias a wavelength at the intended frequency of use makes Equivalent Circuit the device look like a true point junction. This reduces Bias undesirable parasitic effects that can result from the interconnection of several discrete devices. The low thermal resistance achieved through this approach produces a device usable for applications where the power dissipation of beamead equivalents might be exceeded. The table of specifications list the microwave characteristics of the basic semiconductor chips. The circuit designer may use the data with the package Figure 2. Forward Bias Equivalent Circuit parasitic characteristics, in modeling the diode in the 1.75 Boling Wires 7 . . : . : . t ' particular circuit environment. For more information, reer ' ' . . . 1 Hl ' ' reter to The PIN Diode Basics section in the soa ene ot ' . . ' Application Notes. ~l 0.50 pF 1.50 | Single Section Low Pass Filter o 0.30 pF = uw > 1.25 fr ~~ 1 0.15 pF 1.0 Aer- thee 2 4 6 8 10 12 14 16 18 Frequency (GHz) Figure 3. Typical VSWR for Low Pass Filters ALPHA INDUSTRIES, INC. 20 SYLVAN ROAD, WOBURN, MA 01801 5-38 TEL: (617) 935-5150 FAX: (617) 935-4939?In switcaing Jioces CSB7XXX, CSN92XX, CSG7203, CSG7204 Series Electrical Specifications Ve cy! Series Resistance? Ocw Outline Part 10uA 50V (Ohms) Typ. Ts$ T4 Rp (CW) Drawing Number (V) Min. | (pF) Max. 1mA | 10mA 50 mA | (ns) Typ. | (ns) Typ. | (KQ) Typ. Typ. Number Industry Standard CSB7151-01 150 0.12 6.0 2.2 1.0 100 400 149-815 CSB7152-01 70 0.16 2.5 1.0 0.75 5 40 150-813 CSB7156-01 35 0.5 1.5 0.5 Max. 0.4 12 50 149-815 Switching Diodes CSB7002-05 25 0.030.08* 3.0 1.5 5 20 10 100 150-806 CSB7002-06 25 0.8-0.13* 2.5 1.2 5 20 10 80 150-801 CSB7002-07 25 0.13-0.23* 2.0 1.0 5 20 10 80 150-801 CSB7002-01 80 0.03-0.08 8.0 18 5 50 3.0 80 150-801 CSB7002-02 80 0.08-0.13 25 15 5 80 1.5 60 150-801 CSB7002-03 80 0.13-0.23 2.5 1.2 5 80 1.5 40 150-801 CSB7002-04 80 0.23-0.33 2.0 1.0 5 100 1.0 40 150-802 CSB7003-01 100 0.030.08 25 1.5 20 150 2 80 150-801 CSB7003-02 100 0.08-0.13 2.5 1.2 20 200 2 60 150-801 CSB7003-03 100 0.13-0.23 2.5 0.9 20 250 2 40 150-802 CSB7003-04 100 0.230.33 2.5 0.8 20 300 1 40 150-802 High Speed Attenuator Diodes CSB7401-01 100 0.10 Max. 15 1.4 5 50 5 80 150-801 CSB7401-02 100 0.15 Max. 10 1.2 5 80 5 60 150-801 Low Frequency Attenuator Diodes CSB7201-01 200 0.10 Max. 50 1.5 20 750 3 50 149-802 CSB7401-02 200 0.20 Max. 30 1.2 20 800 3 40 149-802 CSB7401-03 200 0.5 Max. 20 0.7 1000 2 30 149-802 Multi-Junction NIP Diodes CSN9250 100 0.3 Max. 3.5 20 100 150-824 CSN9260 100 0.5 Max. 3.5 20 125 150-824 High Voltage Diodes:10 CSG7203-01 500 0.20 Max. 0.6 2000 20 CSG7203-02 500 0.40 Max. 0.4 2000 15 CSG7203-03 500 0.60 Max. 0.35 3000 10 CSG7203-04 500 1.0 Max. 0.25 3000 10 CSG7204-01 1000 0.20 Max. 1.2 3000 20 CSG7204-02 1000 0.35 Max. 0.8 4000 15 CSG7204-03 | 1000 0.60 Max. 0.7 4000 10 CSG720404 1000 1.5 Max. 0.358 5000 5 CSG7204-05 1000 3.0 Max. 0.359 7000 3 1. Cy is measured at 1 MHz, * at -6V, ** at -100V. 2. Rg is measured at 500 MHz. 3. Tg is the RF switching time from 90% to 10% and 10% to 90% transmission. The bias conditions are +10 mA/-10V. 4. TLis the minority carrier lifetime measured with Le=10 mA, La=6 mA, recovering to 3 mA. 5. Diode dissipative loss can be represented as a shunt resistance across the junction capacitance. Data presented for 3.0 GHz, zero bias. 6. Typical CW thermal impedance in package 023-001. 7. Rg for high voltage diodes is at 100 mA bias, 100 MHz min, Cy is at -100V, 1 MHz. 8. Ip = 150 mA, 100 MHz. 9. Ip = 250 mA, 100 MHz. 10. Packages available upon request. ALPHA INDUSTRIES, INC. e 20 SYLVAN ROAD, WOBURN, MA 01801 TEL: (617) 985-5150 FAX: (617) 935-4939 5~39Pin Switching Diodes CSB7XXX, CSN92XX, CSG7203, CSG7204 Series Performance Data for Low Power PIN Switching and Attenuator Diodes 64 ah en _| \ 58 Y N Sf fA 50Q - EY \ = 52 / N a Q $12 $102 $502 \ c / i 1 i \ Z 46 7 = = = = \ 3g Fer \ 9 / 502 Ww 2 40 + t \ | Q-| 2500 -j2500 $500 \ 34 ! = Watchoutfor Lb 1 resonances at 2. \ | | 0 0.10 0.20 0.30 0.40 0.50 Spacing Wavelengths Figure 4. Isolation as a Function of PIN Diode Spacing = ho CSB7003-01 CSB7002-05 pe a So CSB7201-01 CSB7201-01 Rp 3GHz (Kilohm) > a -_ 5 10 Reverse Bias (V) Figure 5. Parallel Resistance vs. Bias 100 = 50 [F | Switch Design | 30 L > 1.0 Mm 20 - LF itnuator S L. Design ay & 10 7. Bonding Wires 10.0 2 SB OF 050 f s E 2 5 500 ese soo | z y ~ T | 50.0 1 [tt iith Coeul J i Tt iti 0.1 #O8 1.0 5.0 10.0 50.0 100.0 1 de (mA) Figure 6. General Curves of Isolation and Rs vs. Bias for Attenuator and Switch Designs Performance Data for High Voltage PIN Switching Diodes Pulsed Thermal Impedance (deg CW) | {| 104 10-2 "Cw Pulse Length (Sec.) Figure 7. Pulsed Thermal Impedance for CSG7203, CSG7204 Series 100.0 | a 2 >] 5 100- See 0.60 pF SS 0.15 pF Or 0.40 pF " ee 01 | | | | 1mA 3. 10mA 30 100mA 300 Figure 8. Typical Series Resistance vs. Bias Current CSG7204 5-40 ALPHA INDUSTRIES, INC. * 20 SYLVAN ROAD, WOBURN, MA 01801 TEL: (617) 935-5150 FAX: (617) 935-4939Pin Switching Diodes CSB7XXX, CSN92XX, CSG7203, CSG7204 Series | Typical Application SP4T Switching for PIN/NIP Switching Diode Multi-Junction Chips 2 | 2 Input | Shunt Pin Series | NIP | 3 LL Multi Junction NIP 3 SP4T Switch 4 4 Ordering Information To order the chip alone simply use the part number The more commonly used packages are outline as itis listed in the table of electrical specifications. To drawing numbers 023-001, 247-001 and 325-001. order a packaged diode, add the six digit package Refer to the Outline Drawing section for the number to the part number. dimensions of each package. ALPHA INDUSTRIES, INC. 20 SYLVAN ROAD, WOBURN, MA 01801 TEL: (617) 935-5150 FAX: (617) 935-4939 5-41