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PDF HMC941LP4 Data sheet ( Hoja de datos )
| Número de pieza | HMC941LP4 | |
| Descripción | 0.5dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR | |
| Fabricantes | Hittite Microwave Corporation | |
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Typical Applications
The HMC941LP4 / HMC941LP4E is ideal for:
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar & ECM
• Space Applications
• Sensors
• Test & Measurement Equipment
Functional Diagram
HMC941LP4 / 941LP4E
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.1 - 33 GHz
Features
0.5 dB LSB Steps to 15.5 dB
Single Positive Control Line Per Bit
±0.5 dB Typical Bit Error
High Input IP3: +45 dBm
16mm2 Leadless SMT Plastic Package
General Description
The HMC941LP4 & HMC941LP4E are broadband 5-bit
GaAs IC digital attenuators in low cost leadless sur-
face mount packages. Covering 0.1 to 33.0 GHz, the
insertion loss is less than 4 dB typical. The attenuator
bit values are 0.5 (LSB), 1, 2, 4, 8, for a total attenu-
ation of 15.5 dB. Attenuation accuracy is excellent
at ±0.3 dB typical step error with an IIP3 of +45 dBm.
Five control voltage inputs, toggled between +5V and
0V, are used to select each attenuation state.
Electrical Specifications, TA = +25° C, With Vdd = +5V, Vss = -5V, P0 - P4 = 0/ +5V
Parameter
Frequency (GHz)
Min.
Typ. Max.
Insertion Loss
0.1 - 18.0 GHz
18.0 - 26.5 GHz
26.5 - 33.0 GHz
3.0 4.5
4.0 6.0
5.0 6.5
Attenuation Range
0.1 - 33.0 GHz
15.5
Return Loss (RF1 & RF2, All Atten. States)
0.1 - 33.0 GHz
12
Attenuation Accuracy: (Referenced to Insertion Loss)
0.5 - 7.5 dB States
8 - 15.5 dB States
0.1 - 33.0 GHz
0.1 - 33.0 GHz
± (0.3 + 4%) of Atten. Setting Max
± (0.3 + 8%) of Atten. Setting Max
Input Power for 0.1 dB Compression
0.1 - 0.5 GHz
0.5 - 33.0 GHz
22
27
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
0.1 - 0.5 GHz
0.5 - 33.0 GHz
42
45
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON/tOFF (50% CTL to 10/90% RF)
0.1 - 33.0 GHz
60
90
Idd
0.1 - 33.0 GHz
2.5
4.5 6.5
Iss
0.1 - 33.0 GHz
-7.0
-5.0 -3.0
Units
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
ns
ns
mA
mA
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
1
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
1 page  
v00.0910
HMC941LP4 / 941LP4E
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.1 - 33 GHz
Truth Table
P4
8 dB
Control Voltage Input
P3
4 dB
P2
2 dB
P1
1 dB
P0
0.5 dB
Attenuation
State
RF1 - RF2
High High
High
High
High Reference I.L.
High High
High
High
Low
0.5 dB
High High
High
Low
High
1 dB
High High Low High High
2 dB
High Low High High High
4 dB
Low High High High High
8 dB
Low Low
Low Low
Low
15.5 dB
Any Combination of the above states will provide an attenuation
approximately equal to the sum of the bits selected.
Pin Descriptions
Pad Number
Function
Description
1 Vss
Negative Bias -5V
2-4, 6-13,
15-17, 19
5, 14
N/C
RF1, RF2
The pins are not connected internally; however, all data
shown herein was measured with these pins connected to
RF/DC ground externally.
These pins are DC coupled and matched to 50 Ohm. Blocking
capacitors are required if RF line potential is not equal to 0V.
18 Vdd
Positive Bias +5V
Interface Schematic
20 - 24
P0 - P4
See truth table and control voltage table.
GND
Package bottom must be connected to RF/DC ground.
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
5
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet HMC941LP4.PDF ] | |
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