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| Digital Attenuator, 31.0 dB, 5-Bit, TTL Driver, DC-6.0 GHz V 5.00 AT90-0001 Features n n n n n n n CSP-1 Attenuation: 1.0 dB Steps to 31 dB High Accuracy to 6 GHz Small Footprint, JEDEC Package Integral TTL driver 50 ohm impedance Test boards are available Tape and Reel Packaging Available Description M/A-COM's AT90-0001 is a GaAs FET 5-bit digital attenuator with an integral TTL driver. Step size is 1.0 dB providing 31 dB total attenuation range. This device is in a 32 lead FQFP-N surface mount package. Due to superior grounding techniques this digital attenuator offers superior performance to 6 GHz. The AT90-0001 is ideally suited for use where accuracy, fast speed, very low power consumption and low costs are required. Electrical Specifications TA = +25C Parameter Insertion Loss Test Conditions -- Frequency DC - 2.0 GHz DC - 4.0 GHz DC - 6.0 GHz DC - 6.0 GHz DC - 6.0 GHz DC - 2.0 GHz DC - 6.0 GHz 50 MHz 0.5 - 6.0 GHz 50 MHz 0.5 - 6.0 GHz 50 MHz 0.5-6.0 GHz -- -- -- -- -- -- -- -- Units dB dB dB dB dB Ratio Ratio dBm dBm dBm dBm dB dB V V nS nS V V mA mA Min -- -- -- -- -- -- -- -- -- -- -- -- -- 4.75 -8.0 -- -- 0.0 2.0 -- -- Typical 2.5 3.3 5.0 -- -- 1.4:1 1.7:1 +22 +28 +43 +60 +37 +48 5.0 -5.0 25 15 0.2 -0.2 Max 3.1 3.8 5.8 (0.3 +4% of atten.) (0.3 +5% of atten.) 1.7:1 2.4:1 -- -- -- -- -- -- 5.25 -4.75 -- -- 0.8 5.0 6 -1 Attenuation Accuracy VSWR 1 dB Compression Input IP2 Input IP3 Vcc -Vee Switching Speed Logic "0" Logic "1" Icc -Iee 1 to 24 dB Bits 25 to 31 dB Bits Full Range -- -- Two tone inputs to +5 dBm Two-tone inputs up to +5 dBm -- -- 50% Cntl to 90%/10% RF 10% to 90% or 90% to 10% Sink Current is 20 A Max. Source Current is 20 A Max. Vcc min to max, Logic "0" or 1" Vee min to max, Logic "0" or 1" Digital Attenuator, 31.0 dB, 5-Bit, TTL Driver, DC - 6.0 GHz AT90-0001 V 5.00 Absolute Maximum Ratings 1 Parameter Max. Input Power 0.05 GHz 0.5 - 6.0 GHz +Vcc -Vee Logic Voltages 2 Truth Table C16 0 0 0 C8 0 0 0 0 1 0 1 C4 0 0 0 1 0 0 1 C2 0 0 1 0 0 0 1 C1 0 1 0 0 0 0 1 Attenuation Loss, Reference 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB Absolute Maximum +27 dBm +34 dBm +5.5V -8.5V 0 -0.5 to Vcc + 0.5V -40C to +85C -65C to +125C 0 1 1 Operating Temperature Storage Temperature 1. Operation of this device above any one of these parameters may cause permanent damange. 2. Standard CMOS TTL interface, latch-up will occur if logic signal is applied prior to power supply. 0 = TTL Low; 1 = TTL High Pin Configuration Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 NC = No Connection Function NC C16 C8 C4 C2 C1 GND NC NC NC GND RF1 GND NC NC NC Pin # 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Function NC NC NC NC NC NC NC NC NC GND RF2 GND NC -Vee NC +Vcc Recommended PCB Layout 3 3. Application Note C2083 is available on line at www.macom.com Specifications subject to change without notice. n North America: Tel. (800) 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. 2 Digital Attenuator, 31.0 dB, 5-Bit, TTL Driver, DC - 6.0 GHz Typical Performance Curves AT90-0001 V 5.00 Insertion Loss vs. Frequency +85C 6 5 +25C - 40C VSWR vs. Frequency RF2 - 31 dB 2.4 2.2 2.0 RF1 - 31 dB RF1 - IL RF1 - IL RF2 - IL Insertion Loss (dB) 4 VSWR 1.8 1.6 1.4 1.2 1.0 3 2 1 0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 Frequency (GHz) Frequency (GHz) Accuracy (dB) vs. Frequency 1 dB Accuracy (dB) vs. Frequency 16 dB 1.50 31 dB 8 dB 4 dB 0.50 1 dB 2 dB Accuracy (dB) Accuracy (dB) 0.25 0.75 0.00 0.00 -0.25 -0.75 -0.50 0.0 1.0 2.0 3.0 4.0 5.0 6.0 -1.50 0.0 1.0 2.0 3.0 4.0 5.0 6.0 Frequency (GHz) Frequency (GHz) Ordering Information Part Number AT90-0001 AT90-0001TR AT90-0001-TB Package Bulk Packaging Tape and Reel (1K Reel) Units Mounted on Test Board Specifications subject to change without notice. n North America: Tel. (800) 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. 3 |
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