HMC271ALP4 Datasheet, PDF (1/8 Pages) Hittite Microwave Corporation – 1 dB LSB GaAs MMIC 5-BIT SERIAL CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz

HMC271ALP4 / 271ALP4E
v02.0311
1 dB LSB GaAs MMIC 5-BIT SERIAL
CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz
8
Typical Applications
The HMC271ALP4(E) 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
24 Lead 4x4mm QFN Package: 16mm²
Included in the HMC-DK004 Designer’s Kit
Functional Diagram
General Description
The HMC271ALP4(E) is a broadband 5-bit positive
control GaAs IC digital attenuator with CMOS com-
patible serial-to-parallel drivers in a low cost lead-
less QFN 4x4 mm SMT package. 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 5 kOhm resistor is required.
8-1
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 + 6% of Atten. Setting) Max
Input Power for 0.1 dB Compression
Vcc = 5V
Vcc = 3V
0.7 - 3.7 GHz
24
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)
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: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: [phone] Fax: [phone] Order On-line at www.hittite.com
Application Support: Phone: [phone] or [e-mail]