HMC274QS16 Datasheet, PDF (1/6 Pages) Hittite Microwave Corporation – 1 dB LSB GaAs IC 5-BIT DIGITAL ATTENUATOR, 0.7 - 2.7 GHz

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MICROWAVE CORPORATION
HMC274QS16
1 dB LSB GaAs IC 5-BIT DIGITAL
ATTENUATOR, 0.7 - 2.7 GHz
Typical Applications
The HMC274QS16 is ideal for:
9
• Cellular/PCS/3G Infrastructure
• 2.4 GHz ISM Radios
• Wireless Data
Functional Diagram
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
General Description
The HMC274QS16 is a broadband 5-bit positive
control GaAs IC digital attenuator in a 16 lead QSOP
plastic package. Covering 0.7 to 2.7 GHz the inser-
tion 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.
9 - 20
Electrical Specifications, T_A = +25° C, Vdd = +3V to +5V & Vctl = 0/Vdd
Parameter
Frequency
Min.
Typical
Max.
Insertion Loss
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.0
2.4
2.3
2.7
2.5
3.1
Attenuation Range
0.7 - 2.7 GHz
31
Return Loss (RF1 & RF2, All Atten. States)
0.7 - 1.4 GHz
10
15
1.4 - 2.7 GHz
12
17
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States
All Attenuation States
All Attenuation States
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
± 0.35 + 5% of Atten. Setting Max
± 0.25 + 3% of Atten. Setting Max
± 0.30 + 5% of Atten. Setting Max
Input Power for 0.1 dB Compression
Vdd = 5V
0.7 - 2.7 GHz
29
Vdd = 3V
20
Input Third Order Intercept Point
Vdd = 5V
0.7 - 2.7 GHz
54
(Two-tone Input Power = 0 dBm Each Tone)
Vdd = 3V
52
Switching Characteristics
0.7 - 2.7 GHz
tRISE, tFALL (10/90% RF)
560
tON, tOFF (50% CTL to 10/90% RF)
600
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Order Online at www.hittite.com
Units
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dB
dB
dB
dB
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dB
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dBm
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