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

Designer’s Kit
Available
HMC271LP4 / 271LP4E
v02.0705
1 dB LSB GaAs MMIC 5-BIT SERIAL
CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz
Typical Applications
6
The HMC271LP4 / HMC271LP4E is ideal for:
• Cellular/3G Infrastructure
• Fixed Wireless, WiMax & WiBro
• 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
Included in the HMC-DK004 Designer’s Kit
Functional Diagram
General Description
The HMC271LP4 & HMC271LP4E are broadband
5-bit positive control GaAs IC digital attenuators with
CMOS compatible 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.
6 - 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 - 0.9 GHz
0.9 - 2.2 GHz
2.2 - 3.7 GHz
± (0.4 + 5% of Atten. Setting) Max
± (0.4 + 4% of Atten. Setting) Max
± (0.4 + 5% of Atten. Setting) Max
Vcc = 5V
24
Input Power for 0.1 dB Compression
Vcc = 3V
0.7 - 3.7 GHz
22
Input Third Order Intercept Point
Vcc = 5V
48
0.7 - 3.7 GHz
(Two-tone Input Power = 0 dBm Each Tone)
Vcc = 3V
46
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (Latch Enable to 10/90% RF)
0.7 - 3.7 GHz
750
830
Units
dB
dB
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