Digital Attenuator, 32 dB, 2-Bit, TTL Driver DC - 2.0 GHz AT-273 AT-273 Digital Attenuator, 32 dB, 2-Bit, TTL Driver DC - 2.0 GHz Features • • • • • • • CR-11 Attenuation: 16.0 dB Steps to 32 dB Low DC Power Consumption Hermetic Surface Mount Package Integral TTL Driver 50 ohm Impedance Temperature Stability: ±0.18 dB from -55°C to +85°C Typ. Tape and Reel Packaging Available ORIENTATION MARK PIN 2 0.050 (1.27) 16 Places 0.450 (11.43) 7 EQUAL SPACES @ .050 (1.27) Tol. Non-Cumulative Description 0.015 ± 0.003 (0.38 ± 0.08) 16 Places Pin 9 Pin 8 M/A-COM's AT-273 is a GaAs FET digital attenuator with a 16.0 dB minimum step size and a 32 dB total attenuation range. This attenuator and integral TTL driver is in a hermetically sealed ceramic 16-lead surface mount package. The AT-273 is ideally suited for use where accuracy, fast switching, very low power consumption and low intermodulation products are required. Typical applications include dynamic range setting in precision receiver circuits and other gain/leveling control circuits. Environmental screening is available. Contact the factory for information. 0.050 TYP (1.27) 0.250 (6.35) 0.008 ± 0.002 (0.20 ± 0.05) 0.075 MAX (1.91) 0.096 (2.44) 0.077 (1.96) BOTTOM VIEW Pin 9 Ordering Information Part Number Package AT-273 Bulk Packaging AT-273-TR Tape and Reel 0.047 (1.19) 14 Places 1 1. Check with the factory for available quantities and reel size. Electrical Specifications TA = +25°C Parameter Test Conditions Frequency Units Min Typical Max Insertion Loss — DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz dB dB dB — — — — — — 1.6 1.7 1.9 Attenuation Accuracy C1 Bit Full Attenuation (32 dB) DC - 2.0 GHz DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz VSWR Full Range DC - 2.0 GHz Trise, Tfall Ton, Toff Transients 10% to 90% 50% Cntl to 90%/10% RF In-Band (peak to peak) ± 3% of attenuation setting in dB ± 3% of attenuation setting in dB ± 3% of attenuation setting in dB, -1 dB ± 3% of attenuation setting in dB, -3 dB Ratio — — 1.6:1 nS nS mV — — — 7 28 30 — — — V5.00 M/A-COM Division of AMP Incorporated Q North America: Tel. (800) 366-2266, Fax (800) 618-8883 Q Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087 Q Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 www.macom.com AMP and Connecting at a Higher Level are trademarks. Specifications Subject to change without notice. Digital Attenuator, 32 dB, 2-Bit, TTL Driver DC - 2.0 GHz AT-273 Electrical Specifications TA = +25°C Parameter Test Conditions Frequency Units Min Typical Max 1 dB Compression Input Power Input Power 0.05 GHz 0.5 - 2.0 GHz dBm dBm — — +20 +28 — — Input IP3 Two-tone inputs up to +5 dBm 0.05 GHz 0.5 - 2.0 GHz dBm dBm — — +38 +48 — — Input IP2 Two-tone inputs up to +5 dBm 0.05 GHz 0.5 - 2.0 GHz dBm dBm — — +44 +68 — — Vcc -Vee — — — — V V 4.5 -8.0 5.0 5.5 -5.0 Vctl Vctl Logic (0) TTL Logic (1) TTL — — V V 0.0 2.0 — — 0.8 5.0 Input Leakage Current (Low) Input Lekage Current (High) 0 to 0.8 V 2.0 to 5.0 V — — µA µA — — -— — 1.0 1.0 Icc Vcc = 4.5 to 5.5V Vctl = 0 to 0.8V, or VCC -2.1 V to VCC — mA — — 2.0 -Iee Vee = -5.0 to -8.0 V — mA — — -1 Absolute Maximum Ratings 2 Parameter Absolute Maximum Max. Input Power 0.05 GHz 0.5 - 2.0 GHz +Vcc -Vee Control Voltage Operating Temperature Storage Temperature +27 dBm +34 dBm +5.5V -8.5V -0.5 to Vcc + 0.5V -55°C to +125°C -65°C to +150°C 2. Operation of this device above any one of these parameters may cause perament damage. Pin Configuration Pin # Function Pin # Function 1 C2 9 RF1 2 GND 10 GND 3 C1 11 GND 4 GND 12 GND 5 GND 13 VEE 6 GND 14 VCC 7 GND 15 NC 8 RF2 16 NC Truth Table C1 C2 Attenuation 0 0 Loss, Reference 0 1 16.0 dB 1 1 30.0 dB 0 = TTL Low; 1 = TTL High V5.00 M/A-COM Division of AMP Incorporated Q North America: Tel. (800) 366-2266, Fax (800) 618-8883 Q Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087 Q Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 www.macom.com AMP and Connecting at a Higher Level are trademarks. Specifications Subject to change without notice.