HMC742LP5E
v05.0610
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 70 MHz - 4 GHz
Features
-19.5 to 12 dB Gain Control in 0.5 dB Steps
Power-up State Selection
High Output IP3: +39 dBm
TTL/CMOS Compatible
Serial, Parallel, or latched Parallel Control
±0.25 dB Typical Gain Step Error
Single +5V Supply
32 Lead 5x5mm SMT Package: 25mm
2
Typical Applications
The HMC742LP5E is ideal for:
• Cellular/3G Infrastructure
• WiBro / WiMAX / 4G
• Microwave Radio & VSAT
• Test Equipment and Sensors
• IF & RF Applications
12
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
Functional Diagram
General Description
The HMC742LP5E is a digitally controlled variable
gain amplifier which operates from 70 MHz to 4
GHz, and can be programmed to provide from -19.5
dB attenuation, to 12 dB of gain, in 0.5 dB steps.
The HMC742LP5E delivers noise figure of 4 dB in
its maximum gain state, with output IP3 of up to
+39 dBm in any state. The dual mode gain control
interface accepts either a three-wire serial input or a
6 bit parallel word. The HMC742LP5E also features a
user selectable power up state and a serial output for
cascading other serially controlled Hittite components.
The HMC742LP5E is housed in an RoHS compliant
5x5 mm QFN leadless package, and requires minimal
external components.
Electrical Specifications,
T
A
= +25° C, 50 Ohm System Vdd = +5V, Vs= +5V
Parameter
Gain (Maximum Gain State)
Gain Control Range
Input Return Loss
Output Return Loss
Gain Accuracy: (Referenced to Maximum Gain State)
All Gain States
Output Power for 1 dB Compression
Output Third Order Intercept Point
(Two-Tone Output Power= 12 dBm Each Tone)
Noise Figure (Max Gain State)
Switching Characteristics
tRISE, tFall (10 / 90% RF)
Min.
Typ.
70 - 1000
12
31.5
15
14
70 MHz - 350 MHz
± (0.3 + 5% of relative gain setting) Max
350 MHz - 1000 MHz
± (0.3 + 6% of relative gain setting) Max
21.5
40
4
70
170
130
1.0
150
2.0
190
3.0
130
1.0
Max.
Min.
Typ.
500 - 4000
9
31.5
12
10
Max.
Units
MHz
dB
dB
dB
dB
± (0.3 + 4% of relative gain setting) Max
dB
dBm
dBm
dB
ns
ns
22
39
4.5
70
170
150
2.0
190
3.0
tON, tOFF (Latch Enable to 10 / 90% RF)
Supply Current (Amplifier)
Supply Current (Controller) Idd
mA
mA
12 - 1
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
HMC742LP5E
v05.0610
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 70 MHz - 4 GHz
70 to 1000 MHz Tuning
Maximum Gain vs. Temperature
17
15
RELATIVE GAIN (dB)
-10
13
GAIN (dB)
11
9
7
5
0
0.2
0.4
0.6
0.8
1
FREQUENCY (GHz)
-40
+25 C
+85 C
-40 C
Relative Gain Setting
(Referenced to Maximum Gain State)
0
8dB
16dB
-20
31.5dB
-30
0
0.2
0.4
0.6
0.8
1
FREQUENCY (GHz)
12
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
12 - 2
Input Return Loss
0
Output Return Loss
0
RETURN LOSS (dB)
0dB
RETURN LOSS (dB)
-10
-10
31.5dB
-20
-20
0dB
-30
31.5dB
-30
16dB
-40
0
0.2
0.4
0.6
0.8
1
FREQUENCY (GHz)
-40
0
0.2
0.4
0.6
0.8
1
FREQUENCY (GHz)
Bit Error vs. Frequency
4
3
31.5dB
BIT ERROR (dB)
2
1
0
-1
16dB
Bit Error vs. Relative Gain
3
0.5, 0.7, 0.9GHz
2
BIT ERROR (dB)
1
0
0.1, 0.3GHz
-2
0
0.2
0.4
0.6
0.8
1
-1
0
8
16
24
32
FREQUENCY (GHz)
RELATIVE GAIN SETTING (dB)
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
HMC742LP5E
v05.0610
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, 70 MHz - 4 GHz
70 to 1000 MHz Tuning
Relative Phase vs. Frequency
20
Step Error vs. Frequency
1
2, 4dB
STEP ERROR (dB)
0.5
RELATIVE PHASE (DEG)
10
31.5dB
8, 16dB
0
0
-10
0, 0.5, 1, 2, 4dB
-0.5
0.5, 8, 16dB
-20
12
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
8
NOISE FIGURE (dB)
6
0
0.2
0.4
0.6
0.8
1
-1
0
0.2
0.4
0.6
0.8
1
FREQUENCY (GHz)
FREQUENCY (GHz)
Noise Figure vs. Temperature
[1]
Output P1dB vs. Temperature
24
23
22
21
20
19
18
+25 C
+85 C
-40 C
4
2
+25 C
+85 C
-40 C
0
0
0.2
0.4
0.6
0.8
1
FREQUENCY (GHz)
P1dB (dBm)
0
0.2
0.4
0.6
0.8
1
FREQUENCY (GHz)
Psat vs. Temperature
28
Output IP3 vs. Temperature
48
24
Psat (dBm)
IP3 (dBm)
+25 C
+85 C
-40 C
44
20
40
16
36
+25 C
+85 C
-40 C
12
0
0.2
0.4
0.6
0.8
1
FREQUENCY (GHz)
32
0
0.2
0.4
0.6
0.8
1
FREQUENCY (GHz)
[1] Max Gain State
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 - 3
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