HMC628LP4 / 628LP4E
v07.0410
BiCMOS MMIC 5-Bit DIGITAL
VARIABLE GAIN AMPLIFIER, 50 - 800 MHz
Typical Applications
The HMC628LP4(E) is ideal for:
• Cellular/3G Infrastructure
• WiBro / WiMAX / 4G
Features
TTL/CMOS compatible serial, parallel or latched
parallel control interface
High Output IP3: +35 dBm (At all gain settings)
Wide Gain Control Range: 23 dB
• Microwave Radio & VSAT
• Test Equipment and Sensors
• IF & RF Applications
Power-up State Selection
24 Lead 4x4 mm SMT Package: 16 mm2
Excellent State & Step Accuracy ( 0.05 dB)
General Description
Functional Diagram
The HMC628LP4(E) is a digitally controlled variable
gain amplifier which operates from 50 to 800 MHz,
and can be programmed to provide anywhere from
8 dB attenuation, to 15 dB of gain, in 1.0 dB steps.
The HMC628LP4(E) delivers noise figure of 5 dB in its
maximum gain state, with output IP3 of up to +35 dBm
in any state. The dual mode control interface is CMOS/
TTL compatible, and accepts either a three wire serial
input or a 5 bit parallel word. The HMC628LP4(E) also
features a user selectable power up state and a serial
output port for cascading other Hittite serial controlled
components. The HMC628LP4(E) is housed in a
RoHS compliant 4x4 mm QFN leadless package, and
is available in three evaluation board configurations,
depending on the application frequency.
12
Electrical Specifications, TA = +25° C, 50 Ohm System, Vdd= +5V
50 - 250
Typ.
15
250 - 500
Typ.
14
500 - 800
MHz
Units
dB
Parameter
Min.
13
Max.
Min.
12.8
Max.
Min.
10.5
Typ.
13
23
10
9
Max.
Gain (Maximum Gain State)
Gain Control Range
Input Return Loss
Output Return Loss
23
23
dB
12
10
dB
10
12.5
dB
(0.1 + 1% of Gain
Setting )Max
(0.4 + 2% of Gain
Setting )Max
(0.4 + 4% of Gain
Setting )Max
Gain Accuracy: (Referenced to Maximum Gain State)
dB
Output Power for 1dB Compression
Output Third Order Intercept Point
Output Second Order Intercept Point
19
19.5
16
18
14
18
dBm
dBm
dBm
[1]
[2]
[3]
35
33
54
32
55
[1]
[2]
[3]
46
2nd
3rd
46
69
55
75
62
83
dBc
dBc
Harmonics
Switching Characteristics
tRISE, tFALL (10 / 90% RF)
11
18
ns
ns
tON, tOFF ( Latch Enable to 10 / 90% RF)
Noise Figure
5
65
6
6.5
65
dB
Supply Current (Idd)
85
65
85
85
mA
[1] Two-Tone Output Power @ 5 dBm
[2] Two-Tone Output Power @ 2 dBm
[3] Two-Tone Output Power @ 0 dBm
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
12 - 34
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