AT20-0107 MACOM

Document overview

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Technical content

Features

n Attenuation: 0.5 dB Steps to 31.5 dB1 n Temperature Stability: ±0.18 dB from – 40ºC to +85ºC Typ. n Low DC Power Consumption n Surface Mount Package n Integral TTL Driver n High Intercept Point n Low Cost/High Performance

Description

M/A-COM's AT 20-0107 is a GaAs FET 6 -bit digital attenuator with a 0.5 dB minimum step size and a 31.5 dB total attenuation. This attenuator and integral TTL driver is in a ceramic 24 -lead surface mount package. The AT 20- 0107 is ideally suited for use where accuracy, fast speed, 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. Available with enhanced perfor m- ance as fully hermetic version. Environmentally screenable as P/N AT-107. Parameter Test Conditions Frequency Units Min Typ. Max Insertion Loss — DC - 2.0 GHz dB — 3.2 3.8 Attenuation Accuracy3,4 Any Bit or Combination of Bits DC - 2.0 GHz dB — — +(.3 +7% of atten.) -(.2 +1% of atten.) VSWR Full Range DC - 2.0 GHz Ratio — — 1.8:1 Trise, Tfall Ton, Toff Transients 10% to 90% 50% Control to 90%/10% RF In-band (peak to peak) nS nS mV 150 1 dB Compression 5 Input Power Input Power

50 MHz

0.5 - 2.0 GHz dBm dBm +21 +29 Input IP3 5 Two Tone Inputs up to +5 dBm 50 MHz 0.5 - 2.0 GHz dB dB +35 +48 Input IP2 5 Two Tone Inputs up to +5 dBm 50 MHz 0.5 - 2.0 GHz dB dB +75 +79 Vcc -Vee V V 4.5 -8.0 5.0 5.5 -5.0 Icc Vcc = 4.5 to 5.5V — mA — — 6.0 -Iee -Vee = -5.0 to -8.0V — mA — — 1.0 1. Above reference insertion loss. 2. All specifications apply when operated with bias voltages of +5V for VCC and – 5.0 V to – 8.0 V for VEE and 50O impedance at all ports unless otherwise stated. 3. This attenuator is guaranteed monotonic. 4. For the attenuator to meet the guaranteed specifications, it is necessary to have a DC return on either RF1 or RF2. The DC return can be either a 10KO resistor, or an RF choke. 5. VEE = -5 V for the typical numbers given.

Digital Attenuator, 31.5 dB, 6-Bit, TTL Driver, DC - 2.0 GHz AT20-0107 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. V 4.00 Absolute Maximum Ratings 6 Parameter Absolute Maximum Max. Input Power

0.05 GHz

0.5 - 2.0 GHz +27 dBm +34 dBm +Vcc +5.5V -Vee -8.5V Control Voltage -0.5V to VCC +0.5V Operating Temperature -40°C to +125°C Storage Temperature -65°C to +150°C 6. Operation of this device above any one of these parameters may cause permanent damange. Truth Table C16 C8 C4 C2 C1 C0.5 Attenuation 0 0 0 0 0 0 Loss, Reference 0 0 0 0 0 1 0.5 dB 0 0 0 0 1 0 1.0 dB 0 0 0 1 0 0 2.0 dB 0 0 1 0 0 0 4.0 dB 0 1 0 0 0 0 8.0 dB 1 0 0 0 0 0 16.0 dB 1 1 1 1 1 1 31.5 dB 0 = TTL Low; 1 = TTL High Functional Schematic (Top View) PCB Layout

Digital Attenuator, 31.5 dB, 6-Bit, TTL Driver, DC - 2.0 GHz AT20-0107 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. V 4.00 Typical Performance Curves Attenuation Accuracy vs. Frequency Insertion Loss vs. Frequency Attenuation Accuracy vs. Frequency RF1 VSWR vs. Frequency RF2 VSWR vs. Frequency Ordering Information Part Number Package AT20-0107 Bulk Packaging AT20-0107TR Tape and Reel (1K Reel) AT20-0107-TB Unit mounted on a test board 0 0.5 1 1.5 2 Frequency (GHz) Loss (dB) -0.6 -0.4 -0.2 0.2 0.4 0.6 0 0.5 1 1.5 2 Frequency (GHz) Deviation (dB) 1 dB 2 dB 4 dB0.5 dB -0.8 -0.6 -0.4 -0.2 0.2 0.4 0.6 0.8 0 0.5 1 1.5 2 Frequency (GHz) Deviation (dB) 31.5 dB8 dB16 dB 1.2 1.4 1.6 1.8 0 0.5 1 1.5 2 Frequency (GHz) Deviation (dB) Loss & 0.5 dB 2 dB 1 dB 4 dB 8 & 16 dB 1.2 1.4 1.6 1.8 0 0.5 1 1.5 2 Frequency (GHz) Deviation (dB) Loss & 0.5 dB1 & 2 dB 16 dB4 dB 8 dB