HMC271LP4 Datasheet, PDF (1/8 Pages) List of Unclassifed Manufacturers – 1 dB LSB GaAs MMIC 5-BIT SERIAL CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz

HMC271LP4 / 271LP4E
v02.0705
1 dB LSB GaAs MMIC 5-BIT SERIAL
CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz
Typical Applications
9
The HMC271LP4 / HMC271LP4E is ideal for:
• Cellular/3G Infrastructure
• Fixed Wireless & WiMax
• Test Instrumentation
Features
1 dB LSB Steps to 31 dB
CMOS Compatible Serial Data Interface
SPI Compatible Serial Output
+/- 0.4 dB Typical Bit Error
4 x 4 mm QFN Plastic Package
Functional Diagram
General Description
The HMC271LP4 & HMC271LP4E are broadband 5-
bit positive control GaAs IC digital attenuators with
serial-to-parallel drivers in low cost leadless QFN
4x4 mm SMT packages. Covering 0.7 to 3.7 GHz,
the insertion loss is typically less than 2.5 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 ± 0.4 dB typical with an IIP3 of up to +48 dBm. Five
bit CMOS compatible serial control words are used to
select each attenuation state. A single Vcc bias of +3V
to +5V applied through an external 5k Ohm resistor is
required.
9 - 14
Electrical Specifications, T_A = +25° C, Vcc = +3V to +5V
Parameter
Frequency
Min.
Typical
Max.
Insertion Loss
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 3.7 GHz
1.9
2.4
2.3
2.8
2.6
3.1
2.8
3.3
Attenuation Range
0.7 - 3.7 GHz
31
Return Loss (RF1 & RF2, All Atten. States)
0.7 - 1.4 GHz
12
1.4 - 2.7 GHz
15
2.7 - 3.7 GHz
16
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States
0.7 - 3.7 GHz
± 0.4 ± 5% of Atten. Setting Max
Input Power for 0.1 dB Compression
Vcc = 5V
0.7 - 3.7 GHz
24
Vcc = 3V
22
Input Third Order Intercept Point
(Two-tone Input Power = 0 dBm Each Tone)
Vcc = 5V
Vcc = 3V
0.7 - 3.7 GHz
48
46
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (Latch Enable to 10/90% RF)
750
0.7 - 3.7 GHz
830
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
ns
ns
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Order On-line at www.hittite.com