ATTENUATORS - SMT
5
5 - 28
HMC274QS16 / 274QS16E
v01.0505
1 dB LSB GaAs IC 5-BIT DIGITAL ATTENUATOR, 0.7 - 2.7 GHz
...
ATTENUATORS - SMT
5
5 - 28
HMC274QS16 / 274QS16E
v01.0505
1 dB LSB GaAs IC 5-BIT DIGITAL ATTENUATOR, 0.7 - 2.7 GHz
Typical Applications
Features
The HMC274QS16 / HMC274QS16E is ideal for:
1 dB LSB Steps to 31 dB
Cellular/PCS/3G Infrastructure
Single Positive Control (+3 to +5V) Per Bit
2.4 GHz ISM Radios
±0.5 dB Typical Bit Error
Wireless Data
LETE Functional Diagram
Small QSOP16 Plastic Package Included in the HMC-DK004 Designer’s Kit
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.
SO Electrical Specifications, TA = +25° C, Vdd = +3V to +5V & Vctl = 0/Vdd
Parameter Insertion Loss
B Attenuation Range O Return Loss (RF1 & RF2, All Atten. States)
Frequency
0.7 - 1.4 GHz 1.4 - 2.3 GHz 2.3 - 2.7 GHz
0.7 - 2.7 GHz
0.7 - 1.4 GHz 1.4 - 2.7 GHz
Min.
Typical
Max.
2.0
2.4
2.3
2.7
2.5
3.1
31
10
15
12
17
Units
dB dB dB
dB
dB dB
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States All Attenu...
