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| Digital Attenuator, 31 dB, 5-Bit, TTL Driver DC - 2.0 GHz AT15-0001 V4.00 Features q q q q DI-3 RF1 1.37 (34.8 0.5) Attenuation: 1-dB Steps to 31 dB Low DC Power Consumption Integral TTL Driver 50 Nominal Impedance 0.018 0.005 (0.46 0.13) DIA 24 PINS RF2 +V C R 16 1 2 4 8 0.200 MAX (5.1) 0.120 MIN (3.0) 0.100 TYP (2.4) Description M/A-COM's AT15-0001 is a GaAs FET 5-bit digital attenuator with a 1-dB minimum step size and 31 dB total attenuation. This attenuator and integral TTL driver is in a 24-pin dual inline package. The AT15-0001 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. 1 PIN 1 0.600 (15.2) 0.80 (20.3 0.5) PIN 13 0.10 (2.5 0.5) 0.14 (3.6 0.5) Pin Configuration 1 2 3 4 5 +5 V GND -12 V GND C16 6 C1 7 C2 8 C4 9 10-12 13 14-23 24 C8 GND RF2 GND RF1 Dimensions in ( ) are in mm. Unless otherwise noted: .xxx = 0.010 (.xx = 0.25) Typical Electrical Specifications , TA = - 55C to +85C Parameter Reference Insertion Loss Test Conditions DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz DC - 1.0 GHz DC - 2.0 GHz DC - 1.0 GHz DC - 2.0 GHz DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz Units Minimum Typical Maximum dB 6.0 dB 6.5 dB 7.3 (0.2 dB + 2% of attenuation setting in dB) dB (0.25 dB + 2% of attenuation setting in dB) dB (0.2 dB + 2% of attenuation setting in dB) dB (0.3 dB + 2% of attenuation setting in dB) dB 1.3:1 1.4:1 1.7:1 nS 5 nS 30 mV 220 dBm +20 dBm +27 dBm +40 dBm +40 dBm +60 dBm +75 V 4.5 5.0 5.5 V -16.5 -10.8 mA 10 mA mA V V A A 8.0 5.0 0.8 5.0 1.0 1.0 Attenuation Accuracy2,3 Any Single Bit Any Combination of Bits VSWR Trise, Tfall Ton, Toff Transients 1 dB Compression Input IP3 Input IP2 VCC VEE ICC IEE Vctl Input Leakage Current 1. 2. 3. 4. 10% RF to 90% RF 50% Control to 90%/10% RF In-band Input Power Input Power For two-tone input power up to +5 dBm For two-tone input power up to +5 dBm 0.05 GHz 0.5 - 2.0 GHz 0.05 GHz 0.5 - 2.0 GHz 0.05 GHz 0.5 - 2.0 GHz VCC = 4.5 to 5.5 V Vctl = 0 to 0.8 V, or VCC - 2.1 V to VCC VEE = -16.5 to -10.8 V VEE = -12.0 V Logic 0 (TTL) Logic 1 (TTL) Low High 0 to 0.8 V 2.0 to 5.0 V 0.0 2.0 All specifications apply when operated with bias voltages of +5 V for VCC and -16.5 V to -10.8 V for VEE, and 50 impedance at all ports unless otherwise specified. Above reference insertion loss. This attenuator is guaranteed monotonic. Replaces AT-104. Specifications Subject to Change Without Notice. M/A-COM, Inc. North America: Tel. (800) 366-2266 Fax (800) 618-8883 s 1 Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451 s Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020 Digital Attenuator, 31 dB, 5-Bit, TTl Driver AT15-0001 V4.00 Absolute Maximum Ratings1 Parameter Maximum Input Power DC - 0.5 GHz 0.5 - 2.0 GHz Supply Voltages VCC VEE Control Voltage Operating Temperature Storage Temperature Absolute Maximum +27 dBm +34 dBm -0.5 V to +7.0 V -18 V to +0.5 V -0.5 V to VCC + 0.5 V -55C to +125C -65C to +150C Functional Schematic RF 1 16 dB 1 dB 2 dB 4 dB 8 dB RF 2 1. Operation of this device above any one of these parameters may cause permanent damage. Truth Table C16 0 0 0 0 0 1 1 0 = TTL Low 1 = TTL High Control Inputs C8 C4 C2 0 0 0 0 0 0 0 0 1 0 1 0 1 0 0 0 0 0 1 1 1 C1 0 1 0 0 0 0 1 Attenuation Reference 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB +5V GND -12V N/C 16 1 2 4 8 GND TTL CONTROL INPUT Ordering Information 2 Part Number AT15-0001 Package Dual Inline 2. Contact the factory for standard or custom screening requirements. Typical Performance REFERENCE INSERTION LOSS VS FREQUENCY INSERTION LOSS (dB) 10 8 2.0 1.8 VSWR VS FREQUENCY 2 dB Bit State 8 dB Bit State Reference Loss State 1 dB Bit State 4 dB Bit State +85C 4 2 0 0.0 0.5 1.0 1.5 2.0 VSWR 6 1.6 1.4 1.2 1.0 0.0 +25C -55C 16 dB Bit State 0.5 1.0 1.5 2.0 FREQUENCY (GHz) ATTENUATION ACCURACY VS FREQUENCY DEVIATION FROM NOMINAL ATTENUATION (dB) (1, 2, 4, 8 and 16 dB Bits and Full Attenuation) FREQUENCY (GHz) 1.0 16 dB Bit 0.5 0 -0.5 -1.0 0.0 0.5 8 dB Bit 2 dB Bit Full Attenuation 4 dB Bit 1 dB Bit 1.0 1.5 2.0 FREQUENCY (GHz) Specifications Subject to Change Without Notice. 2 North America: Tel. (800) 366-2266 Fax (800) 618-8883 s M/A-COM, Inc. Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451 s Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020 |
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