器件名称: 274QS16E
功能描述: 1 dB LSB GaAs IC 5-BIT DIGITAL ATTENUATOR, 0.7 - 2.7 GHz
文件大小: 326.29KB 共6页
简 介:HMC274QS16 / 274QS16E
v01.0505
1 dB LSB GaAs IC 5-BIT DIGITAL ATTENUATOR, 0.7 - 2.7 GHz
Designer’s Kit Available
Typical Applications
Features
1 dB LSB Steps to 31 dB Single Positive Control (+3 to +5V) Per Bit +/- 0.5 dB Typical Bit Error Small QSOP16 Plastic Package Included in the HMC-DK004 Designer’s Kit
6
ATTENUATORS - SMT
The HMC274QS16 / HMC274QS16E is ideal for: Cellular/PCS/3G Infrastructure 2.4 GHz ISM Radios Wireless Data
Functional Diagram
General Description
The HMC274QS16 & HMC274QS16E are broadband 5-bit positive control GaAs IC digital attenuators in 16 lead QSOP plastic packages. Covering 0.7 to 2.7 GHz the insertion loss is typically less than 2.3 dB. The attenuator bit values are 1 (LSB), 2, 4, 8, and 16 dB for a total attenuation of 31 dB. Accuracy is excellent at ± 0.5 dB typical with an IIP3 of up to +50 dBm. Five bit control voltage inputs, toggled between 0 and +3 to +5 volts, are used to select each attenuation state. 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
Parameter Insertion Loss Attenuation Range Return Loss (RF1 & RF2, All Atten. States) Attenuation Accuracy: (Referenced to Insertion Loss) All Attenuation States All Attenuation States All Attenuation States Input Power for 0.1 dB Compression Input Third Order Intercept Point (Two-tone Input Power = 0 dBm Each Tone) Switching Characteristics tRISE, tFALL (10/90% R……
