HMC305LP4 Datasheet, PDF (1/8 Pages) Hittite Microwave Corporation – 0.5 dB LSB GaAs MMIC 5-BIT SERIAL CONTROL DIGITAL ATTENUATOR, 0.7 - 3.8 GHz

Designer’s Kit
Available
HMC305LP4 / 305LP4E
v02.0705
0.5 dB LSB GaAs MMIC 5-BIT SERIAL
CONTROL DIGITAL ATTENUATOR, 0.7 - 3.8 GHz
Typical Applications
6
The HMC305LP4 / HMC305LP4E is ideal for:
• Cellular/3G Infrastructure
• Fixed Wireless, WiMax & WiBro
• Test Instrumentation
Features
0.5 dB LSB Steps to 15.5 dB
CMOS Compatible Serial Data Interface
SPI Compatible Serial Output
+/- 0.3 dB Typical Bit Error
QFN Leadless SMT Package, 16mm²
Included in the HMC-DK004 Designer’s Kit
Functional Diagram
General Description
The HMC305LP4 & HMC305LP4E are broadband
5-bit positive control GaAs IC digital attenuators with
CMOS compatible serial-to-parallel drivers packaged
in leadless QFN 4 x 4 mm SMT packages. Covering
0.7 to 3.8 GHz, the insertion loss is typically less than
1.5 to 2 dB. The attenuator bit values are 0.5 (LSB), 1,
2, 4, and 8 dB for a total attenuation of 15.5 dB. Atten-
uation accuracy is excellent at ± 0.25 dB typical with
an IIP3 of up to +52 dBm. Five bit 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 - 52
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 - 3.8 GHz
1.2
1.5
1.5
2.0
1.8
2.3
2.0
2.5
Attenuation Range
0.7 - 3.8 GHz
15.5
Return Loss (RF1 & RF2, All Atten. States)
0.7 - 1.4 GHz
17
1.4 - 2.3 GHz
18
2.3 - 2.7 GHz
19
2.7 - 3.8 GHz
15
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States
Input Power for 0.1 dB Compression
Input Third Order Intercept Point
(Two-tone Input Power = 0 dBm Each Tone)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (Latch Enable to 10/90% RF)
Vcc = 5V
Vcc = 3V
Vcc = 5V
Vcc = 3V
0.7 - 0.9 GHz
0.9 - 2.2 GHz
2.2 - 3.8 GHz
0.7 - 3.8 GHz
0.7 - 3.8 GHz
0.7 - 3.8 GHz
± (0.5 +5% of Atten. Setting) Max
± (0.3 +4% of Atten. Setting) Max
± (0.5 +5% of Atten. Setting) Max
25
23
52
48
750
830
Units
dB
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