ATTENUATORS - ANALOG - SMT
1
HMC291SE
v05.1216
4 dB LSB SILICON 2-BIT POSITIVE CONTROL
DIGITAL ATTENUATOR, 0.7 - 4.0 GHz
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
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
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. Specications 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.
General Description
Features
Functional Diagram
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 mm
2
Electrical Specications,
T
A
= +25°C, VDD = +3V to +5V & VCTL = 0/VDD (Unless Otherwise Stated)
Typical Applications
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
required.
The HMC291SE is ideal for:
• Cellular
• PCS, ISM, MMDS
• WLL Handset & Base Station
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
0.5
0.6
0.8
0.65
0.65
0.7
1.32
dB
dB
dB
dB
Attenuation Range 0.7 - 4.0 GHz 12 dB
Return Loss
(RF1 & RF2, All Atten. States)
0.7 - 1.4 GHz
1.4 - 4.0 GHz
20
17
25
27
dB
dB
State Error
All Attenuation States
All Attenuation States
All Attenuation States
All Attenuation States
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 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)
dB
dB
dB
dB
Input Power for 0.1 dB Compression (Input P0.1dB)
5V
[1]
3V
0.7 - 4.0 GHz
28
27
dBm
dBm
Input Third Order Intercept Point (IIP3)
(Two-tone Input Power = 15 dBm Each Tone)
5V
3V
0.7 - 4.0 GHz 52
52
57
54
59
56
dBm
dBm
Switching Characteristics
t
RISE
, t
FALL
(10/90% RF)
t
ON
, t
OFF
(50% CTL to 10/90% RF)
0.7 - 4.0 GHz
250
300
ns
ns
[1] Compression point is above maximum input power
