HMC424 Datasheet, PDF (1/6 Pages) Hittite Microwave Corporation – 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 13 GHz

MICROWAVE CORPORATION
v02.0404
HMC424
0.5dB LSB GaAs MMIC 6-BIT DIGITAL
ATTENUATOR, DC - 13 GHz
Typical Applications
The HMC424 is ideal for:
2
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar, & ECM
• Space Applications
Functional Diagram
Features
0.5 dB LSB Steps to 31.5 dB
Single Control Line Per Bit
+/- 0.5 dB Typical Bit Error
Die Size: 0.85 mm x 1.45 mm x 0.1 mm
General Description
The HMC424 die is a broadband 6-bit GaAs IC
digital attenuator MMIC chip. Covering DC to 13
GHz, the insertion loss is less then 4 dB typical.
The attenuator bit values are 0.5 (LSB), 1, 2, 4,
8, and 16 dB for a total attenuation of 31.5 dB.
Attenuation accuracy is excellent at ± 0.5 dB typi-
cal step error with an IIP3 of +32 dBm. Six con-
trol voltage inputs, toggled between 0 and -5V,
are used to select each attenuation state. A single
Vee bias of -5V allows operation at frequencies
down to DC.
Electrical Specifications, T_A = +25° C, With Vee = -5V & VCTL = 0/-5V
Parameter
Frequency (GHz)
Min.
Typ.
Max.
Units
Insertion Loss
Attenuation Range
Return Loss (RF1 & RF2, All Atten. States)
Attenuation Accuracy: (Referenced to Insertion Loss)
Input Power for 0.1 dB Compression
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
Switching Characteristics
DC - 8.0 GHz
8.0 - 13.0 GHz
3.0
3.8
dB
4.0
4.6
dB
DC - 13.0 GHz
31.5
dB
DC - 8.0 GHz
8
12
dB
8.0 - 13.0 GHz
11
15
dB
0.5 - 7.5 dB States
8 - 31.5 dB States
REF State
All Other States
DC - 13.0 GHz
DC - 13.0 GHz
1.0 - 13.0 Ghz
1.0 - 13.0 Ghz
DC - 13.0 GHz
± 0.3 + 4% of Atten. Setting Max
± 0.3 + 6% of Atten. Setting Max
22
46
32
dB
dB
dBm
dBm
dBm
tRISE, tFALL (10/90% RF)
tON/tOFF (50% CTL to 10/90% RF)
30
ns
50
ns
2-8
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