器件名称: 291E
功能描述: 4 dB LSB GaAs MMIC 2-BIT DIGITAL ATTENUATOR, 0.7 - 4.0 GHz
文件大小: 274.24KB 共6页
简 介:HMC291 / 291E
v02.0402
4 dB LSB GaAs MMIC 2-BIT DIGITAL ATTENUATOR, 0.7 - 4.0 GHz
Designer’s Kit Available
Typical Applications
Features
RoHS Compliant Product 4 dB LSB Steps to 12 dB Single Positive Control Per BIT, 0/+3V +/-0.2 dB Typical Bit Error Miniature SOT 26 Package: 9 mm2 Included in the HMC-DK004 Designer’s Kit
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ATTENUATORS - SMT
The HMC291 & HMC291E are ideal for: Cellular PCS, ISM, MMDS WLL Handset & Base Station
Functional Diagram
General Description
The HMC291 & HMC291E are general purpose broadband 2-bit positive control GaAs IC digital attenuators in 6 lead SOT26 surface mount plastic packages. Covering 0.7 to 4 GHz, the insertion loss is typically less than 0.7 to 1.3 dB. The attenuator bit values are 4 (LSB) and 8 dB for a total attenuation of 12 dB. Accuracy is excellent at ± 0.2 dB typical with an IIP3 of up to +54 dBm. Two bit control voltage inputs, toggled between 0 and +3 to +5 volts, are used to select each attenuation state at less than 50 uA each. A single Vdd bias of +3 to +5 volts applied through an external 5K Ohm resistor is required.
Electrical Specifications,
TA = +25° C, Vdd = +3V to +5V & Vctl = 0/Vdd (Unless Otherwise Stated)
Parameter Insertion Loss Frequency 0.7 - 1.4 GHz 1.4 - 2.3 GHz 2.3 - 2.7 GHz 2.7 - 4.0 GHz 0.7 - 4.0 GHz 0.7 - 1.4 GHz 1.4 - 4.0 GHz 14 16 Min. Typical 0.7 0.9 1.0 1.1 12 17 22 Max. 1.0 1.3 1.4 1.6 Units dB dB dB dB dB dB dB
Attenuation Range Return Loss (RF1 & RF2, All Atten. States)
Attenuation Accurac……
