AT65-0283 Digital Attenuator, 15.5 dB, 5-Bit, TTL Driver, DC - 2.0 GHz Features n n n n n n n V 6.00 SOW-16 Attenuation: 0.5 dB Steps to 15.5 dB Low DC Power Consumption Plastic SOIC, Wide Body, SMT Package Integral TTL Driver 50 ohm Impedance Test Boards are Available Tape and Reel Packaging Available Description M/A-COM's AT65-0283 is a GaAs FET 5-bit digital attenuator with integral TTL driver. Step size is 0.5 dB providing a 15.5 dB total attenuation range. This device is in a SOIC-16 plastic surface mount package. The AT65-0283 is ideally suited for use where accuracy, fast speed, very low power consumption and low costs are required. Package outline conforms to JEDEC standard MS-013AA. Electrical Specifications: TA = 25°C Parameter Test Conditions Frequency Units Min Typical Max Insertion Loss — DC - 1.0 GHz DC - 2.0 GHz dB dB — — 2.0 2.3 2.5 2.7 Attenuation Accuracy Any Bit Any Combination of Bits DC - 2.0 GHz DC -2.0 GHz dB dB — — — — ±(.3 +4% of atten) ± (.3 +6% of atten) VSWR Full Range DC - 2.0 GHz Ratio — 1.5:1 1.8:1 50% Cntl to 90%/10% RF 10% to 90% or 90% to 10% — — nS nS — — 75 20 150 50 1 dB Compression — — 50 MHz 0.5 - 2.0 GHz dBm dBm — — +21 +29 — — Input IP3 Two-tone inputs up to +5 dBm 50 MHz 0.5-2.0 GHz dB dB — — +35 +48 — — Vcc -Vee — — — — V V 4.75 -8.0 5.0 -5.0 5.25 -4.75 Logic “0” Sink Current is 20 µA max. — V 0.0 — 0.8 Logic “1” Source Current is 20 µA max. — V 2.0 — 5.0 Icc Vcc min to max, Logic “0” or “1” — mA — 0.2 6 -Iee -Iee min to max, Logic “0” or “1” — mA — -0.2 -1 Switching Speed 1 1. Decoupling capacitors (.01 µF) are required on power supply lines. Digital Attenuator, 15.5 dB, 5-Bit, TTL Driver, DC - 2.0 GHz AT65-0283 V 6.00 Absolute Maximum Ratings 2 Pin Configuration Pin # Function Pin # Parameter Function 1 RF 9 C8 2 GND 10 Vcc 3 GND 11 Vee 4 GND 12 C4 5 GND 13 C2 6 GND 14 C1 7 GND 15 C0.5 8 RF 16 GND Absolute Maximum Max. Input Power 0.05 GHz 0.5 - 2.0 GHz +27 dBm +34 dBm +Vcc +5.5V -Vee -8.5V Logic Voltages Truth Table 3 -0.5 to Vcc + 0.5V Operating Temperature -40°C to +85°C Storage Temperature -65°C to +125°C 2. Operation of this device above any one of these parameters may cause permanent damange. 3. Standard CMOS TTL interface, latch-up will occur if logic signal is applied prior to power supply. Typical Performance Curves C8 C4 C2 C1 C0.5 Attenuation 0 0 0 0 0 Loss, Reference 0 0 0 0 1 0.5 dB 0 0 0 1 0 1.0 dB 0 0 1 0 0 2.0 dB 0 1 0 0 0 4.0 dB 1 0 0 0 0 8.0 dB 1 1 1 1 1 15.5 dB Insertion Loss Insertion Loss (dB) 2.50 0 = TTL Low; 1 = TTL High 2.00 1.50 1.00 0 500 1000 1500 2000 Frequency (MHz) Attenuation Accuracy 0.5, 1, 2 dB Bits Attenuation Accuracy 4 dB Bit 0.3 0.8 Deviation (dB) 1.0 0.2 Deviation (dB) Max. Attenuation 8 dB 0.4 0.1 0.0 0.6 0.4 0.2 0.0 -0.1 -0.2 -0.2 0 500 1000 1500 2000 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. 0 500 1000 1500 2000 Frequency (MHz) 2 Digital Attenuator, 15.5 dB, 5-Bit, TTL Driver, DC - 2.0 GHz AT65-0283 V 6.00 Typical Performance Curves VSWR @ Insertion Loss VSWR RFout, 0.5, 1, 2 & 4 dB Bits RFout RFin 1.5 1.6 1.4 VSWR VSWR 1.4 1.3 1.2 1.2 1.1 1 1 0 500 1000 1500 0 2000 500 1500 2000 VSWR RFout, 8 dB Bit & Max Attenuation VSWR RFin, 0.5, 1, 2, 4, 8 dB Bits and Max Attenuation 1.5 1.5 1.4 1.4 1.3 1.3 VSWR VSWR 1000 Frequency (MHz) Frequency (MHz) 1.2 1.2 1.1 1.1 1 1 0 500 1000 1500 2000 Frequency (MHz) 0 500 1000 1500 2000 Frequency (MHz) Ordering Information Part Number Package AT65-0283 Bulk Packaging AT65-0283TR Tape and Reel (1K Reel) AT65-0283-TB 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