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PDF HMC291SE Data sheet ( Hoja de datos )
| Número de pieza | HMC291SE | |
| Descripción | 4 dB LSB SILICON 2-BIT POSITIVE CONTROL DIGITAL ATTENUATOR | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Typical Applications
The HMC291SE is ideal for:
• Cellular
• PCS, ISM, MMDS
• WLL Handset & Base Station
HMC291SE
v05.1216
4 dB LSB SILICON 2-BIT POSITIVE CONTROL
DIGITAL ATTENUATOR, 0.7 - 4.0 GHz
Features
RoHS Compliant Product
4 dB LSB Steps to 12 dB
Single Positive Control Per Bit, 0/+3V or +5V
Typical Step Error : ±0.3 dB
Miniature SOT 26 Package: 9 mm2
Functional Diagram
General Description
The HMC291SE is a general purpose broadband
2-bit positive control silicon IC digital attenuator in
6 lead SOT26 surface mount plastic package. The
insertion loss is typically in between 0.4 dB - 1 dB
through operating frequency range. The attenuator
bit values are 4 (LSB) and 8 dB for a total attenuation
of 12 dB. State error is excellent at ± 0.4 dB typical
with an IIP3 of up to 57 dBm. Two bit control voltage
inputs, toggled between 0V and +3V or +5V, are used
to select each attenuation state at less than 25 µA
each. A single VDD supply voltage of +3V to +5V
applied through an external 4.7K Ohm resistor is
Electrical Specifications,
required.
TA = +25°C, VDD = +3V to +5V & VCTL = 0/VDD (Unless Otherwise Stated)
Parameter
Frequency
Min.
Typical
Max.
Units
Insertion Loss
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 4.0 GHz
0.5 0.65 dB
0.5 0.65 dB
0.6 0.7 dB
0.8 1.32 dB
Attenuation Range
0.7 - 4.0 GHz
12 dB
Return Loss
(RF1 & RF2, All Atten. States)
0.7 - 1.4 GHz 20 25
1.4 - 4.0 GHz 17 27
dB
dB
State Error
All Attenuation States
All Attenuation States
All Attenuation States
All Attenuation States
Input Power for 0.1 dB Compression (Input P0.1dB)
5V[1]
3V
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 4.0 GHz
0.7 - 4.0 GHz
± (0.1 + 4% of Atten. Setting Max)
± (0.2 + 2% of Atten. Setting Max)
± (0.4 + 3% of Atten. Setting Max)
± (0.4 + 4% of Atten. Setting Max)
28
27
dB
dB
dB
dB
dBm
dBm
Input Third Order Intercept Point (IIP3)
(Two-tone Input Power = 15 dBm Each Tone)
5V 0.7 - 4.0 GHz 52 57 59 dBm
3V 52 54 56 dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
[1] Compression point is above maximum input power
0.7 - 4.0 GHz
250 ns
300 ns
Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price, delivery, and to place orders: Analog Devices, Inc.,
1 responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
1 page  
HMC291SE
v05.1216
4 dB LSB SILICON 2-BIT POSITIVE CONTROL
DIGITAL ATTENUATOR, 0.7 - 4.0 GHz
Application Circuit
DC blocking capacitors C1 and C2 are required on RF1
and RF2. Choose C1 = C2 = 100 ~ 300 pF to allow
lowest frequency of operation to pass with minimal loss.
R1 = 4.7K Ohm is required to supply voltage to the circuit
through either PIN 3 or PIN 1.
Evaluation Circuit Board
List of Materials for Evaluation PCB EV1HMC291SE [1]
Item
Description
J1 - J2
PCB Mount SMA Connector
J5 - J8
DC Pin
R1 4.7 kOhm Resistor, 0402 Pkg.
C1, C2
0402 Pkg. Capacitor, Select for Lowest
Frequency of Operation
C3 1 nF capacitor, 0402 Pkg.
U1 HMC291SE Digital Attenuator
PCB [2]
103370 Evaluation PCB 1.5” x 1.5”
[1] Reference this number when ordering complete evaluation PCB
The circuit board used in the application should use
RF circuit design techniques. Signal lines should
have 50 Ohm impedance while the package ground
leads should be connected directly to the ground
plane similar to that shown. A sufficient number
of via holes should be used to connect the top and
bottom ground planes. The evaluation circuit board
as shown is available from Analog Devices upon
request.
[2] Circuit Board Material: Rogers 4350
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
4
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| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet HMC291SE.PDF ] | |
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