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| Digital Attenuator, 31 dB, 5-Bit, TTL Driver, DC-4.0 GHz V 6.00 AT90-0263 Features n n n n n n n CSP-1 Attenuation: 1.0dB Steps to 31dB Low DC Power Consumption Small Footprint, JEDEC Package Integral TTL Driver 50 ohm Impedance Test Boards are Available Tape and Reel Packaging Available Description M/A-COM's AT90-0263 is a GaAs FET 5-bit digital attenuator with integral TTL driver. Step size is 1.0 dB providing 31dB total attenuation range. This device is in a FQFP-N plastic surface mount package. The AT90-0263 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 Attenuation Accuracy Test Conditions -- Individual Bits 1-2-4-8-16 dB Any Combination of Bits 1 to 31 dB VSWR Switching Speed 1 dB Compression Input IP3 +Vcc -Vee Logic "0" Logic "1" Icc -Iee Full Range 50% Cntl to 90%/10% RF 10% to 90% or 90% to 10% -- -- Two-tone inputs up to +5 dBm -- -- 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" Frequency DC - 4.0 GHz DC - 3.0 GHz DC - 4.0 GHz DC - 4.0 GHz DC - 4.0 GHz -- -- 50 MHz 0.5 - 4.0 GHz 50 MHz 0.5-4.0 GHz -- -- -- -- -- -- Units dB dB dB dB Ratio nS nS dBm dBm dB dB V V V V mA mA Min -- -- -- -- -- -- -- -- -- -- -- 4.75 -8.0 0.0 2.0 -- -- Typical 3.6 -- -- -- 2.0:1 75 20 +21 +29 +35 +48 5.0 -5.0 -- -- 0.2 -0.2 Max 4.0 (.3 +5% of atten setting) (.4 +6% of atten setting) (.5 +7% of atten setting) 2.2:1 150 50 -- -- -- -- 5.25 -4.75 0.8 5.0 6 -1 Digital Attenuator, 31 dB, 5-Bit, TTL Driver, DC - 4.0 GHz AT90-0263 V 6.00 Pin Configuration Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1. Function GND C16 C8 C4 C2 C1 GND NC NC NC1 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 NC1 -Vee NC +Vcc Recommended PCB Layout 2 Pins 10 & 29 must be isolated 2. Application Note C2083 is available on line at www.macom.com Absolute Maximum Ratings 3 Parameter Max. Input Power 0.05 GHz 0.5 - 4.0 GHz +Vcc -Vee Logic Voltages 4 Truth Table C16 0 0 0 0 0 1 1 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 1.0 dB 2.0 dB 4.0 dB 8.0 dB 16.0 dB 31.0 dB Absolute Maximum +27 dBm +34 dBm +5.5V -8.5V -0.5 to +Vcc + 0.5V -40C to +85C -65C to +125C Operating Temperature Storage Temperature 0 = TTL Low; 1 = TTL High 3. Operation of this device above any one of these parameters may cause permanent damange. 4. Standard CMOS TTL interface, latch-up will occur if logic signal is applied prior to power supply. 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 dB, 5-Bit, TTL Driver, DC - 4.0 GHz Typical Performance Curves Insertion Loss 4.0 AT90-0263 V 6.00 VSWR @ Insertion Loss Input 3.00 Output Loss (dB) 3.0 VSWR 2.0 1.0 0 1000 2000 3000 4000 2.00 1.00 0 1000 2000 3000 4000 Frequency (MHz) Frequency (MHz) Attenuation Error, 1 dB Bit 0.3 0.3 Attenuation Error, 2 dB Bit 0.2 0.2 Error (dB) 0.1 Error (dB) 0 1000 2000 3000 4000 0.1 0 0 -0.1 -0.1 0 1000 2000 3000 4000 Frequency (MHz) Frequency (MHz) Attenuation Error, 4 dB Bit 0.7 Attenuation Error, 8 dB Bit 0.7 0.5 0.5 Error (dB) Error (dB) 0.3 0.3 0.1 0.1 -0.1 0 1000 2000 3000 4000 -0.1 0 1000 2000 3000 4000 Frequency (MHz) Frequency (MHz) 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 Digital Attenuator, 31 dB, 5-Bit, TTL Driver, DC - 4.0 GHz Typical Performance Curves Attenuation Error, 16 dB Bit 1.5 AT90-0263 V 6.00 Attenuation Error, Max. Attenuation 1.5 Error (dB) 0.5 Error (dB) 0.5 -0.5 -0.5 -1.5 0 1000 2000 3000 4000 -1.5 0 1000 2000 3000 4000 Frequency (MHz) Frequency (MHz) VSWR, 1 dB Bit Output 1.8 Input VSWR, 2 dB Bit Input 1.6 Output 1.6 1.4 VSWR 1.4 VSWR 1.2 1.0 0 1000 2000 3000 4000 1.2 1.0 0 1000 2000 3000 4000 Frequency (MHz) Frequency (MHz) VSWR, 4 dB Bit Input 1.6 Output VSWR, 8 dB Bit Input 1.6 Output 1.4 1.4 1.2 VSWR 1.2 1.0 0 1000 2000 3000 4000 VSWR 1.0 0 1000 2000 3000 4000 Frequency (MHz) Frequency (MHz) 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. 4 Digital Attenuator, 31 dB, 5-Bit, TTL Driver, DC - 4.0 GHz Typical Performance Curves VSWR, 16 dB Bit Input 1.6 Output AT90-0263 V 6.00 VSWR, Maximum Attenuation Input 1.6 Output 1.4 1.4 VSWR VSWR 1.2 1.2 1.0 0 1000 2000 3000 4000 1.0 0 1000 2000 3000 4000 Frequency (MHz) Frequency (MHz) Ordering Information Part Number AT90-0263 AT90-0263TR AT90-0263-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. 5 |
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