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 - 1
VARIABLE GAIN AMPLIFIERS - ANALOG - SMT
12
HMC694LP4 / 694LP4E
v02.1108
Functional Diagram
The HMC694LP4(E) is a GaAs MMIC PHEMT analog
variable gain amplier which operates between 6 and
17 GHz. Ideal for microwave radio applications, the
amplier provides up to 22 dB of gain, output P1 dB
of up to +22 dBm, and up to +30 dBm of output IP3
at maximum gain, while requiring only 175 mA from
a +5V supply. A gate bias pin (Vctrl) is provided to
allow variable gain control up to 23 dB. Gain atness
is excellent making the HMC694LP4E ideal for EW,
ECM and radar applications. The HMC694LP4E is
housed in a RoHS compliant 4x4 mm QFN leadless
package and is compatible with high volume surface
mount manufacturing.
Typical Applications Features
General Description
GaAs MMIC ANALOG VARIABLE
GAIN AMPLIFIER, 6 - 17 GHz
The HMC694LP4(E) is ideal for:
• Point-to-Point Radio
• Point-to-Multi-Point Radio
• EW & ECM
• X-Band Radar
• Test Equipment
Wide Gain Control Range: 23 dB
Single Control Voltage
Output IP3 @ Max Gain: +30 dBm
Output P1dB: +22 dBm
No External Matching
24 Lead 4x4 mm SMT Package: 16 mm2
Electrical Specications, TA = +25°C, Vdd1, 2, 3= 5V, Vctrl= -2V, Idd= 170 mA*
Parameter Min. Typ. Max. Min. Typ. Max. Units
Frequency Range 6 - 10 10 - 17 GHz
Gain 19 22 14 18 dB
Gain Flatness ±1 ±1.5 dB
Gain Variation Over Temperature 0.015 0.015 dB/ °C
Gain Control Range 23 20 dB
Noise Figure 6 7.5 6 6.5 dB
Input Return Loss 15 8 dB
Output Return Loss 10 8 dB
Output Power for 1 dB Compression (P1dB) 19 21 21 22 dBm
Saturated Output Power (Psat) 22 23 dBm
Output Third Order Intercept (IP3) 30 30 dBm
Total Supply Current (Idd) 175 175 mA
*Set Vctrl = -2V and then adjust Vgg1, 2 between -2V to 0V (typ. -0.8V) to achieve Idd = 170mA typical.
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 - 2
VARIABLE GAIN AMPLIFIERS - ANALOG - SMT
12
HMC694LP4 / 694LP4E
v02.1108
GaAs MMIC ANALOG VARIABLE
GAIN AMPLIFIER, 6 - 17 GHz
Output Return Loss vs. Temperature
Broadband Gain & Return Loss Gain vs. Temperature
Input Return Loss vs. Temperature
-30
-20
-10
0
10
20
30
4 6 8 10 12 14 16 18 20 22 24 26
S21
S11
S22
RESPONSE (dB)
FREQUENCY (GHz)
-30
-25
-20
-15
-10
-5
0
6 8 10 12 14 16 18
+25C
+85C
-40C
RETURN LOSS (dB)
FREQUENCY (GHz)
0
5
10
15
20
25
30
6 8 10 12 14 16 18
+25C
+85C
-40C
GAIN (dB)
FREQUENCY (GHz)
-30
-25
-20
-15
-10
-5
0
6 8 10 12 14 16 18
+25C
+85C
-40C
RETURN LOSS (dB)
FREQUENCY (GHz)
Control Voltage Range vs. Gain Gain vs. Control Voltage
-5
0
5
10
15
20
25
-1.6 -1.4 -1.2 -1 -0.8 -0.6 -0.4
GAIN (dB)
CONTROL VOLTAGE (V)
17 GHz
6 GHz
10 GHz
13 GHz
-5
0
5
10
15
20
25
5 7 9 11 13 15 17 19
GAIN (dB)
FREQUENCY (GHz)
Vctl = -2.0V
Vctl = 0V
Vctl = -1.2V
Vctl = -1.0V
Vctl = -1.3V
Vctl = -0.8V
Vctl = -1.1V
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
VARIABLE GAIN AMPLIFIERS - ANALOG - SMT
12
[1] Tested with broadband bias tee on RF ports and C1 = 10,000pF
[2] C1, C6 and C8 = 100pF, L1 = 24nF
HMC694LP4 / 694LP4E
v02.1108
GaAs MMIC ANALOG VARIABLE
GAIN AMPLIFIER, 6 - 17 GHz
P1dB vs. Temperature Psat vs. Temperature
0
4
8
12
16
20
24
28
4 6 8 10 12 14 16 18
+25C
+85C
-40C
Psat (dBm)
FREQUENCY (GHz)
Vctrl = -2V
Vctrl = 0V
0
4
8
12
16
20
24
28
4 6 8 10 12 14 16 18
+25C
+85C
-40C
P1dB (dBm)
FREQUENCY (GHz)
Vctrl = -2V
Vctrl = 0V
Noise Figure vs. Temperature
0
2
4
6
8
10
6 8 10 12 14 16 18
+25C
+85C
-40C
NOISE FIGURE (dB)
FREQUENCY (GHz)
Return Loss @ Voltage Extreme Output Return Loss @ Voltage Extreme
-30
-25
-20
-15
-10
-5
0
6 8 10 12 14 16 18
-2V
0V
RETURN LOSS (dB)
FREQUENCY (GHz)
-30
-25
-20
-15
-10
-5
0
6 8 10 12 14 16 18
-2V
0V
RETURN LOSS (dB)
FREQUENCY (GHz)
Noise Figure vs. CTRL
4
6
8
10
12
14
16
18
20
22
-1.6 -1.4 -1.2 -1 -0.8 -0.6 -0.4
NOISE FIGURE (dB)
CONTROL VOLTAGE (V)
6 GHz
17 GHz
6 GHz
17 GHz
(6, 8, 10, 12, 14, 17) GHz
14 GHz
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 - 4
VARIABLE GAIN AMPLIFIERS - ANALOG - SMT
12
HMC694LP4 / 694LP4E
v02.1108
GaAs MMIC ANALOG VARIABLE
GAIN AMPLIFIER, 6 - 17 GHz
Output IP3 vs. Temperature
10
14
18
22
26
30
34
4 6 8 10 12 14 16 18
+25C
+85C
-40C
IP3 (dBm)
FREQUENCY (GHz)
Vctrl = 0V, Pout = 8dBm
Vctrl = -2V, Pout = 15dBm
Reverse Isolation vs. Temperature
-80
-70
-60
-50
-40
-30
6 8 10 12 14 16 18
+25C
+85C
-40C
REVERSE ISOLATION (dB)
FREQUENCY (GHz)
Output IP3 @ 5 dBm
12
14
16
18
20
22
24
26
28
-1.2 -1 -0.8 -0.6 -0.4 -0.2 0
IP3 (dBm)
CONTROL VOLTAGE (V)
16 GHz
7 GHz
12 GHz
Output IP3 @ 0 dBm
12
14
16
18
20
22
24
26
28
-0.8 -0.6 -0.4 -0.2 0
IP3 (dBm)
CONTROL VOLTAGE (V)
16 GHz
7 GHz
12 GHz
Output IP3 @ 10 dBm
16
18
20
22
24
26
28
30
-2 -1.8 -1.6 -1.4 -1.2 -1 -0.8 -0.6
IP3 (dBm)
CONTROL VOLTAGE (V)
16 GHz
7 GHz
12 GHz
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 - 5
VARIABLE GAIN AMPLIFIERS - ANALOG - SMT
12
HMC694LP4 / 694LP4E
v02.1108
GaAs MMIC ANALOG VARIABLE
GAIN AMPLIFIER, 6 - 17 GHz
Outline Drawing
NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS]
3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE.
4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM.
PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM.
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm.
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE
SOLDERED TO PCB RF GROUND.
7. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED
LAND PATTERN.
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC694LP4 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] H694
XXXX
HMC694LP4E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H694
XXXX
[1] Max peak reow temperature of 235 °C
[2] Max peak reow temperature of 260 °C
[3] 4-Digit lot number XXXX
Package Information
Absolute Maximum Ratings
Drain Bias Voltage (Vdd1, 2, 3) +5.5V
Gate Bias Voltage (Vgg1, 2) -3 to 0V
Gain Control Voltage (Vctrl) -3 to 0V
RF Power Input +5 dBm
Channel Temperature 175 °C
Continuous Pdiss (T = 85 °C)
(derate 10.2 mW/°C above 85 °C) [1] 0.92 W
Thermal Resistance
(Channel to ground paddle) 97.6 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Bias Voltage
Vdd1,2,3 (V) Idd Total (mA)
+5.0 170
Vgg1,2 (V) Igg Total (mA)
0V to -2V <3 µA
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 - 6
VARIABLE GAIN AMPLIFIERS - ANALOG - SMT
12
HMC694LP4 / 694LP4E
v02.1108
GaAs MMIC ANALOG VARIABLE
GAIN AMPLIFIER, 6 - 17 GHz
Pin Descriptions
Pad Number Function Description Interface Schematic
1, 2, 6, 8, 10,
11, 13, 17, 18,
20, 21, 23
N/C No Connection
3, 5, 14, 16 GND Die bottom must be connected to RF/DC ground.
4 RFIN This pad is AC coupled
and matched to 50 Ohm.
7, 12 Vgg1, 2
Gate control for amplier. Adjust voltage to achieve typical
Idd. Please follow “MMIC Amplier Biasing Procedure”
application note.
9 Vctrl Gain control Voltage for the amplier. See assembly
diagram for required external components.
15 RFOUT This pad is AC coupled
and matched to 50 Ohm.
19, 22, 24 Vdd1, 2, 3 Drain Bias Voltage for the amplier. See assembly diagram for
required external components
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 - 7
VARIABLE GAIN AMPLIFIERS - ANALOG - SMT
12
HMC694LP4 / 694LP4E
v02.1108
GaAs MMIC ANALOG VARIABLE
GAIN AMPLIFIER, 6 - 17 GHz
Application Circuit
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 - 8
VARIABLE GAIN AMPLIFIERS - ANALOG - SMT
12
HMC694LP4 / 694LP4E
v02.1108
GaAs MMIC ANALOG VARIABLE
GAIN AMPLIFIER, 6 - 17 GHz
Evaluation PCB
The circuit board used in the application should use
RF circuit design techniques. Signal lines should
have 50 Ohm impedance while the package ground
leads and exposed paddle should be connected
directly to the ground plane similar to that shown.
A sufficient number of via holes should be used to
connect the top and bottom ground planes. The
evaluation circuit board shown is available from Hit-
tite upon request.
List of Materials for Evaluation PCB 122174 [1]
Item Description
J1, J2 PCB Mount SMA RF Connectors
J3 - J9 DC Pin
C1 - C6 100 pF Capacitor, 0402 Pkg.
C7 - C12 1000 pF Capacitor, 0603 Pkg.
C13 - C18 2.2 µF Capacitor, CASE A
U1 HMC694LP4(E) Variable Gain Amplier
PCB [2] 122172 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Arlon 25FR