Digital Attenuator, 31 dB, 5-Bit, TTL Driver DC - 2.0 GHz AT15-0001 V4.00 Features ● ● ● ● DI-3 1.37 (34.8 ±0.5) Attenuation: 1-dB Steps to 31 dB Low DC Power Consumption Integral TTL Driver 50Ω Nominal Impedance RF1 +V RF2 C R 16 1 2 4 8 0.200 MAX (5.1) 0.018 ±0.005 (0.46 ±0.13) DIA 24 PINS Description 0.120 MIN (3.0) 0.100 TYP (2.4) 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. 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 Environmental screening is available. Contact the factory for information. 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) 1 Typical Electrical Specifications , TA = - 55°C to +85°C Parameter Reference Insertion Loss Attenuation Accuracy2,3 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 Any Single Bit Any Combination of Bits VSWR Trise, Tfall Ton, Toff Transients 1 dB Compression 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 Input IP3 Input IP2 VCC VEE ICC VCC = 4.5 to 5.5 V Vctl = 0 to 0.8 V, or VCC - 2.1 V to VCC IEE VEE = -16.5 to -10.8 V VEE = -12.0 V Vctl Logic 0 (TTL) Logic 1 (TTL) Input Leakage Current 1. 2. 3. 4. 0.05 GHz 0.5 - 2.0 GHz 0.05 GHz 0.5 - 2.0 GHz 0.05 GHz 0.5 - 2.0 GHz Low High 0 to 0.8 V 2.0 to 5.0 V 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 µA µA 0.0 2.0 8.0 5.0 0.8 5.0 1.0 1.0 All specifications apply when operated with bias voltages of +5 V for VCC and -16.5 V to -10.8 V for VEE, and 50Ω 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: 1 Tel. (800) 366-2266 Fax (800) 618-8883 ■ Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451 ■ Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020 Digital Attenuator, 31 dB, 5-Bit, TTl Driver AT15-0001 V4.00 Functional Schematic Absolute Maximum Ratings1 Parameter RF 1 Absolute Maximum Maximum Input Power DC - 0.5 GHz 0.5 - 2.0 GHz Supply Voltages VCC VEE Control Voltage Operating Temperature Storage Temperature RF 2 16 dB +27 dBm +34 dBm 1 dB 2 dB 4 dB 8 dB -0.5 V to +7.0 V -18 V to +0.5 V -0.5 V to VCC + 0.5 V -55°C to +125°C -65°C to +150°C 1. Operation of this device above any one of these parameters may cause permanent damage. Truth Table +5V GND -12V N/C 16 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 C16 0 0 0 0 0 1 1 Attenuation C1 0 1 0 0 0 0 1 Reference 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB 0 = TTL Low 1 = TTL High 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 VSWR VS FREQUENCY 2.0 8 2 dB Bit State 1.8 +85°C 6 VSWR INSERTION LOSS (dB) REFERENCE INSERTION LOSS VS FREQUENCY 10 4 -55°C +25°C 2 1.6 8 dB Bit State Reference Loss State 1.4 1 dB Bit State 4 dB Bit State 16 dB Bit State 1.2 0 0.0 0.5 1.0 1.5 2.0 1.0 0.0 FREQUENCY (GHz) 0.5 1.0 1.5 2.0 FREQUENCY (GHz) DEVIATION FROM NOMINAL ATTENUATION (dB) ATTENUATION ACCURACY VS FREQUENCY (1, 2, 4, 8 and 16 dB Bits and Full Attenuation) 1.0 16 dB Bit 2 dB Bit 8 dB Bit 0.5 0 Full Attenuation -0.5 4 dB Bit 1 dB Bit -1.0 0.0 0.5 1.0 1.5 2.0 FREQUENCY (GHz) Specifications Subject to Change Without Notice. M/A-COM, Inc. 2 North America: Tel. (800) 366-2266 Fax (800) 618-8883 ■ Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451 ■ Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020