AT20-0106 MACOM

Document overview

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Technical content

Features

n Attenuation: 1 dB steps to 50 dB n Temperature Stability: ± 0.18 dB from – 40°C to +85°C Typical n Low DC Power Consumption n Surface Mount Package n Integral TTL Driver n High Intercept Point n Low Cost/High Performance n 50 Ohm Nominal Impedance

Description

M/A-COM’s AT20 -0106 is a GaAs FET 6 -bit digital attenuator with a 1 dB minimum step size and 50 dB total attenuation. This atte nuator and integral TTL driver is in a ceramic 24-lead surface mount package. The AT20 -0106 is ideally suited for use where acc uracy, fast switching, low power consumption and low intermodulation products are required. Typical applications include dynami c range setting in precision receiver circuits and other gain/leveling control circuits. Available with enhanced performance a s fully hermetic version. Environmentally screenable as P/N AT-106. Electrical Specifications: TA = 25°C1 Parameter Test Conditions Frequency Units Min Typ Max Reference Insertion Loss — DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz dB dB dB 3.0 3.5 4.0 3.6 4.1 4.6 Attenuation Accuracy 2 Any Single Bit Any Combination of Bits (For attenuation to 26 dB) Any Combination of Bits (For attenuation 27 to 50 dB) DC - 2.0 GHz DC - 2.0 GHz DC - 1.5 GHz dB dB dB ± (0.3 +4% of atten. setting) ± (0.4 +4% of atten. setting) ± (0.5 +5% of atten. setting) VSWR — 0.05 - 0.10 GHz 0.101 - 2.0 GHz Ratio Ratio 2.0:1 1.8:1 Trise, Tfall 10% to 90% — ns — — 50 Ton, Toff 50% Control to 90/10% RF — ns — — 150 Transients In-Band (peak-peak) — mV — 50 — 1 dB Compression Input Power Input Power

0.05 GHz

0.5 - 2.0 GHz dBm dBm +20 +28 Input IP3 For two-tone Input Power Up to +5 dBm 0.5 - 2.0 GHz dBm dBm +34 +46 Input IP2 For two-tone Input Power Up to +5 dBm 0.5 - 2.0 GHz dBm dBm +75 +79 Vcc — — V 4.5 5.0 5.5 1. All specifications apply when operated with bias voltages of +5V for Vcc and – 5.0V for Vee. 2. This attenuator is guaranteed monotonic.

Digital Attenuator, 50 dB, 6-Bit, TTL Driver, DC - 2 GHz AT20-0106 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 5.00 Parameter Test Conditions Frequency Units Min Typ Max Icc Vcc = 4.5 to 5.5V Vctl = 0 to 0.8V, or Vcc – 2.1V to Vcc — mA — — 6.0 Iee Vee = -5.0 to -8.0V — mA — — 1.0 Electrical Specifications: TA = 25°C Absolute Maximum Ratings 3 3. Operation of this device above any one of these parameters may cause permanent damage. 4. Standard CMOS TTL interface, latch-up will occur if logic signal is applied prior to power supply. Parameter Absolute Maximum Max Input Power

0.5 GHz

0.5 - 2.0 GHz +27 dBm +34 dBm Supply Voltages Vcc Vee +5.5V -8.5V Control Voltage 4 -0.5V to Vcc +0.5V Operating Temperature -40°C to +125°C Storage Temperature -65°C to +150°C Truth Table C6 C5 C4 C3 C2 C1 Attenuation 0 0 0 0 0 0 Reference 0 0 0 0 0 1 1 dB 0 0 0 0 1 0 2 dB 0 0 0 1 0 0 4 dB 0 0 1 0 0 0 8 dB 0 1 0 0 0 0 16 dB 1 0 0 0 0 0 32 dB 1 1 1 1 1 1 63 dB Control Inputs Functional Schematic (Top View) PIN 1 GND GND GND C32 C16 Vee (-5V to -8V) Vcc (+5V) GND GND GND GND GND GND RF1 PIN 24 32 dB 16 dB 8 dB 4 dB 2 dB 1 dB GND GND GND Orientation Mark GND RF2 PIN 13 PIN 12 GND 0 = TTL Low 1 = TTL High

Digital Attenuator, 50 dB, 6-Bit, TTL Driver, DC - 2 GHz AT20-0106 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 5.00 Typical Performance Curves

Ordering Information

Attenuation Accuracy vs. Frequency Insertion Loss vs. Frequency Attenuation Accuracy vs. Frequency RF1 VSWR vs. Frequency RF2 VSWR vs. Frequency Frequency (GHz) Insertion Loss (dB) +85°C +25°C -55°C -0.60 -0.40 -0.20 0.00 0.20 0.40 0.60 Frequency (GHz) Deviation from Nominal Atten (dB) 1 dB 2 dB 4 dB 8 dB -2.00 -1.00 0.00 1.00 2.00 Frequency (GHz) Deviation from Nominal Atten (dB) 16 dB 32 dB 40 dB 50 dB 1.2 1.4 1.6 1.8 Frequency (GHz) VSWR 1 dB4 dB 8 & 16 dB32 dBRef Loss & 2 dB 1.2 1.4 1.6 1.8 Frequency (GHz) VSWR 1 dB2 dB8 dB 16 dB Ref Loss & 4 dB 32 dB