HMC291 Datasheet, PDF (1/6 Pages) Hittite Microwave Corporation – 4 dB LSB GaAs MMIC 2-BIT DIGITAL ATTENUATOR, 0.7 - 4.0 GHz

MICROWAVE CORPORATION
v01.0402
HMC291
4 dB LSB GaAs MMIC 2-BIT DIGITAL
ATTENUATOR, 0.7 - 4.0 GHz
Typical Applications
The HMC291 is ideal for:
9
• Cellular
• PCS, ISM, MMDS
• WLL Handset & Base Station
Features
4 dB LSB Steps to 12 dB
Single Positive Control Per BIT, 0/+3V
+/-0.2 dB Typical Bit Error
Miniature SOT 26 Package: 9 mm²
Functional Diagram
General Description
The HMC291 is a broadband 2 - bit positive control
GaAs IC digital attenuator in a 6 lead SOT26 sur-
face mount plastic package. Covering 0.7 to 4 GHz,
the insertion loss is typically less than 0.7 to 1.3 dB.
The attenuator bit values are 4 (LSB) and 8 dB for a
total attenuation of 12 dB. Accuracy is excellent at ±
0.2 dB typical with an IIP3 of up to +54 dBm. Two bit
control voltage inputs, toggled between 0 and +3 to
+5 volts, are used to select each attenuation state at
less than 50 uA each. A single Vdd bias of +3 to +5
volts applied through an external 5K Ohm resistor is
required.
Electrical Specifications,
T_A = +25° C, Vdd = +3V to +5V & Vctl = 0/Vdd (Unless Otherwise Stated)
Parameter
Frequency
Min.
Typical
Max.
Insertion Loss
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 4.0 GHz
0.7
1.0
0.9
1.3
1.0
1.4
1.1
1.6
Attenuation Range
0.7 - 4.0 GHz
12
Return Loss (RF1 & RF2, All Atten. States)
0.7 - 1.4 GHz
14
17
1.4 - 4.0 GHz
16
22
Attenuation Accuracy: (Referenced to Insertion Loss)
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
± 0.3 + 3% of Atten. Setting Max
± 0.2 + 2% of Atten. Setting Max
± 0.2 + 3% of Atten. Setting Max
± 0.4 + 5% of Atten. Setting Max
Input Power for 0.1 dB Compression
5V
0.7 - 4.0 GHz
26
3V
22
Input Third Order Intercept Point
5V
0.7 - 4.0 GHz
54
(Two-tone Input Power = 0 dBm Each Tone)
3V
50
Switching Characteristics
0.7 - 4.0 GHz
tRISE, tFALL (10/90% RF)
560
tON, tOFF (50% CTL to 10/90% RF)
600
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
ns
ns
9 - 38
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Order Online at www.hittite.com