HMC274QS16_06 Datasheet, PDF (1/6 Pages) Hittite Microwave Corporation – 1 dB LSB GaAs IC 5-BIT DIGITAL ATTENUATOR, 0.7 - 2.7 GHz

Designer’s Kit
Available
HMC274QS16 / 274QS16E
v01.0505
1 dB LSB GaAs IC 5-BIT DIGITAL
ATTENUATOR, 0.7 - 2.7 GHz
Typical Applications
6
The HMC274QS16 / HMC274QS16E is ideal for:
• Cellular/PCS/3G Infrastructure
• 2.4 GHz ISM Radios
• Wireless Data
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
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.
6 - 28
Electrical Specifications, T_A = +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)
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
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
Vdd = 5V
Vdd = 3V
Vdd = 5V
Vdd = 3V
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
0.7 - 2.7 GHz
0.7 - 2.7 GHz
± 0.35 + 5% of Atten. Setting Max
± 0.25 + 3% of Atten. Setting Max
± 0.30 + 5% of Atten. Setting Max
29
20
54
52
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
0.7 - 2.7 GHz
560
600
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
ns
ns
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Order On-line at www.hittite.com