HMC603QS16
/
603QS16E
v00.0805
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, 0.7 - 3.8 GHz
Typical Applications
Features
0.5 dB LSB Steps to 15.5 dB
Single Positive Control Per Bit
鹵 0.15 dB Typical Bit Error
High Input IP3: +50 dBm
QSOP16 SMT Package
6
ATTENUATORS - SMT
The HMC603QS16 / HMC603QS16E is ideal for:
鈥?Cellular/3G Infrastructure
鈥?ISM, MMDS
鈥?WLAN, WiMAX, & WiBro
Functional Diagram
General Description
The HMC603QS16 & HMC603QS16E are general
purpose broadband 5-bit positive control GaAs IC
digital attenuators in 16 lead QSOP surface mount
plastic packages. Covering 0.7 to 3.8 GHz, the inser-
tion loss is less than 1.9 dB typical. The attenuator
bit values are 0.5 (LSB), 1, 2, 4 and 8 dB for a total
attenuation of 15.5 dB. Attenuation accuracy is excel-
lent at 鹵 0.15 dB typical with an IIP3 of +50 dBm.
Five bit control voltage inputs, toggled between 0
and +3 to +5V, are used to select each attenuation
state at less than 1 uA each. A single Vdd bias of
+3 to +5V applied through an external 5K Ohm
resistor is required.
Electrical Specifications,
T
A
= +25擄 C, Vdd= +3V to +5V & Vctl= 0/Vdd (Unless Otherwise Stated)
Parameter
Frequency (GHz)
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 3.0 GHz
3.0 - 3.8 GHz
Min.
Typical
1.3
1.6
1.9
2.6
15.5
0.7 - 1.4 GHz
1.4 - 3.0 GHz
3.0 - 3.8 GHz
18
20
15
Max.
1.6
1.9
2.2
3.0
Units
dB
dB
dB
dB
dB
dB
dB
dB
Insertion Loss
Attenuation Range
Return Loss (RF1 & RF2, All Atten. States)
Attenuation Accuracy: (Referenced to Insertion Loss)
All States
Vdd = 5V
Vdd = 3V
REF - 2 dB States
2.5 - 15.5 dB States
0.7 -2.2 GHz
2.2 - 3.8 GHz
0.7 - 3.8 GHz
0.7 - 3.8 GHz
鹵 (0.2 + 2% of Atten. Setting) Max.
鹵 (0.3 + 3% of Atten. Setting) Max.
29
28
53
48
1.6
1.6
dB
dB
dBm
dBm
dBm
dBm
渭s
渭s
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 (50% CTL to 10/90% RF)
0.7 - 3.8 GHz
6 - 188
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
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