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
• Microwave Radio & VSAT
• Test Equipment and Sensors
• IF & RF Applications
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
Power-up State Selection
24 Lead 4x4 mm SMT Package: 16 mm
2
Excellent State & Step Accuracy (±0.05 dB)
Functional Diagram
General Description
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
Electrical Specifi cations,
T
A
= +25° C, 50 Ohm System, Vdd= +5V
50 - 250
Parameter
Min.
Gain (Maximum Gain State)
Gain Control Range
Input Return Loss
Output Return Loss
Gain Accuracy: (Referenced to Maximum Gain State)
Output Power for 1dB Compression
Output Third Order Intercept Point
Output Second Order Intercept Point
Harmonics
2nd
3rd
13
Typ.
15
23
12
10
± (0.1 + 1% of Gain
Setting )Max
19
19.5
35
[1]
46
[1]
46
69
Max.
Min.
12.8
Typ.
14
23
10
12.5
± (0.4 + 2% of Gain
Setting )Max
16
18
33
[2]
54
[2]
55
75
11
18
5
65
[2] Two-Tone Output Power @ 2 dBm
85
6
65
85
6.5
65
85
Max.
Min.
10.5
Typ.
13
23
10
9
± (0.4 + 4% of Gain
Setting )Max
14
18
32
[3]
55
[3]
62
83
Max.
Units
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBc
dBc
ns
ns
dB
mA
250 - 500
500 - 800
MHz
Switching Characteristics
tRISE, tFALL (10 / 90% RF)
tON, tOFF ( Latch Enable to 10 / 90% RF)
Noise Figure
Supply Current (Idd)
[1] Two-Tone Output Power @ 5 dBm
[3] Two-Tone Output Power @ 0 dBm
12 - 34
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
HMC628LP4 / 628LP4E
v07.0410
BiCMOS MMIC 5-Bit DIGITAL
VARIABLE GAIN AMPLIFIER, 50 - 800 MHz
50 to 250 MHz Tuning
Normalized Attenuation
Maximum Gain vs. Frequency
25
20
15
10
GAIN (dB)
5
0
-5
-10
-15
-20
-25
0.05
0.1
0.15
FREQUENCY (GHz)
0.2
0.25
+25 C
+85 C
-40 C
(Only Major States are Shown)
0
NORMALIZED ATTENUATION (dB)
-5
-10
-15
-20
-25
-30
-35
0.05
0.1
0.15
FREQUENCY (GHz)
0.2
0.25
12
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
12 - 35
Input Return Loss
(Only Major States are Shown)
0
-5
RETURN LOSS (dB)
Output Return Loss
(Only Major States are Shown)
0
-5
RETURN LOSS (dB)
-10
-15
-20
-25
-30
-35
-40
0.05
-10
-15
-20
-25
-30
-35
-40
0.05
0.1
0.15
FREQUENCY (GHz)
0.2
0.25
0.1
0.15
FREQUENCY (GHz)
0.2
0.25
Output IP3 vs. Frequency
45
40
35
IP3 (dBm)
30
25
20
15
0.05
Output IP2 vs. Frequency
60
55
50
IP3 (dBm)
45
40
35
30
0.05
0.1
0.15
FREQUENCY (MHz)
0.2
0.25
0.1
0.15
FREQUENCY (MHz)
0.2
0.25
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
HMC628LP4 / 628LP4E
v07.0410
BiCMOS MMIC 5-Bit DIGITAL
VARIABLE GAIN AMPLIFIER, 50 - 800 MHz
50 to 250 MHz Tuning
Bit Error vs. Frequency
(Only Major States are Shown)
2
1.5
1
BIT ERROR (dB)
0.5
0
-0.5
-1
-0.6
-1.5
-2
0.05
-0.8
-1
0.1
0.15
FREQUENCY (GHz)
0.2
0.25
0
4
8
12
16
20
24
ATTENUATION STATE (dB)
BIT ERROR (dB)
0.4
0.2
0
-0.2
-0.4
Bit Error vs. Attenuation State
1
0.8
(50, 100, 150, 200, 250) MHz
0.6
12
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
Normal Relative Phase vs. Frequency
(Only Major States are Shown)
30
Step Error vs. Frequency
(Only Major States are Shown)
1
0.8
RELATIVE PHASE (deg)
0.6
STEP ERROR (dB)
15
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-30
0.05
0.1
0.15
FREQUENCY (GHz)
0.2
0.25
-1
0.05
0.1
0.15
FREQUENCY (GHz)
0.2
0.25
0
1 - 23 dB
-15
Noise Figure vs. Frequency
10
9
8
NOISE FIGURE (dB)
7
6
5
4
3
2
1
0
0.05
Output IP3 vs. Attenuation @ 150 MHz
45
40
35
IP3 (dBm)
30
25
20
15
0.1
0.15
FREQUENCY (GHz)
0.2
0.25
0
5
10
15
20
25
ATTENUATION (dB)
12 - 36
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
HMC628LP4 / 628LP4E
v07.0410
BiCMOS MMIC 5-Bit DIGITAL
VARIABLE GAIN AMPLIFIER, 50 - 800 MHz
250 to 500 MHz Tuning
Maximum Gain vs. Frequency
25
20
15
10
GAIN (dB)
5
0
-5
-10
-15
-20
-25
0.2
0.3
0.4
FREQUENCY (GHz)
0.5
0.6
+25 C
+85 C
-40 C
Normalized Attenuation
(Only Major States are Shown)
0
NORMALIZED ATTENUATION (dB)
-5
-10
-15
-20
-25
-30
-35
0.2
0.3
0.4
FREQUENCY (GHz)
0.5
0.6
12
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
12 - 37
Input Return Loss
(Only Major States are Shown)
0
-5
RETURN LOSS (dB)
Output Return Loss
(Only Major States are Shown)
0
-5
RETURN LOSS (dB)
-10
-15
-20
-25
-30
-35
-40
0.2
-10
-15
-20
-25
-30
-35
-40
0.2
0.3
0.4
FREQUENCY (GHz)
0.5
0.6
0.3
0.4
FREQUENCY (GHz)
0.5
0.6
Output IP3 vs. Frequency
45
40
35
IP3 (dBm)
30
25
20
15
0.25
Output IP2 vs. Frequency
80
70
60
IP2 (dBm)
50
40
30
20
0.25
0.3
0.35
0.4
0.45
0.5
0.3
0.35
0.4
0.45
0.5
FREQUENCY (MHz)
FREQUENCY (MHz)
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
HMC628LP4 / 628LP4E
v07.0410
BiCMOS MMIC 5-Bit DIGITAL
VARIABLE GAIN AMPLIFIER, 50 - 800 MHz
250 to 500 MHz Tuning
Bit Error vs. Frequency
(Only Major States are Shown)
2
1.5
1
BIT ERROR (dB)
0.5
0
-0.5
-1
-0.6
-1.5
-2
-0.8
-1
0.2
0.3
0.4
FREQUENCY (GHz)
0.5
0.6
0
4
8
12
16
20
24
ATTENUATION STATE (dB)
BIT ERROR (dB)
0.4
0.2
0
-0.2
-0.4
Bit Error vs. Attenuation State
1
0.8
(250, 300, 350, 400, 450, 500) MHz
0.6
12
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
80
60
RELATIVE PHASE (deg)
Normal Relative Phase vs. Frequency
(Only Major States are Shown)
Step Error vs. Frequency
(Only Major States are Shown)
1
0.8
0.6
STEP ERROR (dB)
23 dB
40
8 dB
16 dB
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
20
0
-20
-40
0.2
1 - 4 dB
0.3
0.4
FREQUENCY (GHz)
0.5
0.6
-1
0.2
0.3
0.4
FREQUENCY (GHz)
0.5
0.6
Noise Figure vs. Frequency
10
9
8
NOISE FIGURE (dB)
7
6
5
4
3
2
1
0
0.2
Output IP3 vs. Attenuation @ 350 MHz
45
40
35
IP3 (dBm)
30
25
20
15
0.3
0.4
FREQUENCY (GHz)
0.5
0.6
0
5
10
15
20
25
ATTENUATION (dB)
12 - 38
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
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