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Details, datasheet, quote on part number:HMC274QS16
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Datasheet text preview:
v00.1002
MICROWAVE CORPORATION
HMC274QS16
1 dB LSB GaAs IC 5-BIT DIGITAL ATTENUATOR, 0.7 - 2.7 GHz
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
Typical Applications
The HMC274QS16 is ideal for:
9
ATTENUATORS - SMT
· Cellular/PCS/3G Infrastructure · 2.4 GHz ISM Radios · Wireless Data
Functional Diagram
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 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 Inser tion 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 10 12 Min. Typical 2.0 2.3 2.5 31 15 17 Max. 2.4 2.7 3.1 Units dB dB dB dB dB dB
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 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 ± 0.35 + 5% of Atten. Setting Max ± 0.25 + 3% of Atten. Setting Max ± 0.30 + 5% of Atten. Setting Max 29 20 54 52 dB dB dB dBm dBm dBm dBm
Input Third Order Intercept Point (Two-tone Input Power = 0 dBm Each Tone) Switching Characteristics tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF)
0.7 - 2.7 GHz
0.7 - 2.7 GHz 560 600 ns ns
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com
v00.1002
MICROWAVE CORPORATION
HMC274QS16
1 dB LSB GaAs IC 5-BIT DIGITAL ATTENUATOR, 0.7 - 2.7 GHz
Return Loss RF1, RF2
Insertion Loss
0 -0.5 -1
INSERTION LOSS (dB)
+25 C +85 C -40 C
(Only Major States are Shown)
0 -5
RETURN LOSS (dB)
I.L. 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB
9
ATTENUATORS - SMT
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-1.5 -2 -2.5 -3 -3.5 -4 -4.5 -5 0.5 1 1.5 2 2.5 3
-10 -15 -20 -25 -30 0.5
1
1.5
2
2.5
3
FREQUENCY (GHz)
FREQUENCY (GHz)
Normalized Attenuation
(Only Major States are Shown)
0
NORMALIZED ATTENUATION (dB)
Bit Error vs. Attenuation State
1.5 1
BIT ERROR (dB)
-5 -10 -15 -20 -25 -30 -35 0.5
0.5 0 -0.5 -1 -1.5
0.9 GHz 1.9 GHz 2.4 GHz
1
1.5
2
2.5
3
0
4
8
12
16
20
24
28
32
FREQUENCY (GHz)
ATTENUATION STATE (dB)
Bit Error vs. Frequency
(Only Major States are Shown)
2
Relative Phase vs. Frequency
(Only Major States are Shown)
150
1 dB 2 dB 4 dB 8 dB 16 dB 31 dB
1
BIT ERROR (dB)
RELATIVE PHASE (deg)
100
50
0
1 dB 2 dB 4 dB 8 dB 16 dB 31 dB
0
-1
-50
-2 0.5
1
1.5
2
2.5
3
-100 0.5
1
1.5
2
2.5
3
FREQUENCY (GHz)
FREQUENCY (GHz)
Note: All Data Typical Over Voltage (+3V to +5V). For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com
MICROWAVE CORPORATION
v00.1002
HMC274QS16
1 dB LSB GaAs IC 5-BIT DIGITAL ATTENUATOR, 0.7 - 2.7 GHz
Compression Point & IP3
9
ATTENUATORS - SMT
Attenuation State (dB) 1 2 4 1 2 4
Control Voltage (V) 5 5 5 3 3 3
Input P1dB (dBm) +25C 32.3 32.3 32.8 24.8 24.7 26.0 +85C 31.8 31.8 32.1 25.7 24.1 25.6 -40C 32.9 32.8 33.3 25.2 25.1 26.6 +25C 29.4 29.2 29.4 19.7 19.7 19.6
Input P0.1dB (dBm) +85C 28.8 28.6 28.7 18.6 18.3 18.6 -40C 29.8 29.4 29.3 21.1 21.0 21.1 +25C 54.7 52.2 54.1 52.2 52.2 53.1
Input IP3 (dBm) +85C 49.1 49.1 48.65 48.1 48.1 47.65 -40C 52.2 52.2 52.7 52.5 52.2 53.2
Application Circuit
DC blocking capacitors C1 & C2 are required on RF1 & RF2. Choose C1 = C2 = 100 ~ 300 pF to allow lowest customer specific frequency to pass with minimal loss. R1 = 5K Ohm is required to supply voltage to the circuit through either PIN 9 or PIN 16.
9 - 28
For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com
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