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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
AMPLIFIERS - DRIVER & GAIN BLOCK - SMT
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HMC478ST89 / 478ST89E
SiGe HBT GAIN BLOCK
MMIC AMPLIFIER, DC - 4 GHz
v05.0710
General Description
Functional Diagram
The HMC478ST89 & HMC478ST89E are SiGe
Heterojunction Bipolar Transistor (HBT) Gain Block
MMIC SMT ampli ers covering DC to 4 GHz. Pack-
aged in an industry standard SOT89, the ampli er
can be used as a cascadable 50 Ohm RF/IF gain
stage as well as a LO or PA driver with up to +20 dBm
output power. The HMC478ST89(E) offers 22 dB of
gain with a +30 dBm output IP3 at 850 MHz while
requiring only 62mA from a single positive supply.
The Darlington feedback pair used results in reduced
sensitivity to normal process variations and excellent
gain stability over temperature while requiring a
minimal number of external bias components.
P1dB Output Power: +18 dBm
Gain: 22 dB
Output IP3: +30 dBm
Cascadable 50 Ohm I/Os
Single Supply: +5V to +8V
Industry Standard SOT89 Package
Robust 1,000V ESD, Class 1C
Included in the HMC-DK001 Designer’s Kit
Typical Applications
The HMC478ST89 / HMC478ST89E is an ideal RF/IF
gain block & LO or PA driver:
• Cellular / PCS / 3G
• Fixed Wireless & WLAN
• CATV, Cable Modem & DBS
• Microwave Radio & Test Equipment
Electrical Speci cations, Vs= 5V, Rbias= 18 Ohm, TA = +25° C
Note: Data taken with broadband bias tee on device output.
Parameter Min. Typ. Max. Units
Gain
DC - 1.0 GHz
1.0 - 2.0 GHz
2.0 - 3.0 GHz
3.0 - 4.0 GHz
19
16
13
11
22
19
16
14
dB
dB
dB
dB
Gain Variation Over Temperature DC - 4 GHz 0.015 0.02 dB/ °C
Input Return Loss
DC - 1.0 GHz
1.0 - 3.0 GHz
3.0 - 4.0 GHz
15
10
13
dB
dB
dB
Output Return Loss DC - 3.0 GHz
3.0 - 4.0 GHz
13
15
dB
dB
Reverse Isolation DC - 4 GHz 20 dB
Output Power for 1 dB Compression (P1dB)
0.5 - 1.0 GHz
1.0 - 2.0 GHz
2.0 - 3.0 GHz
3.0 - 4.0 GHz
15
13
10
8
18
16
13
11
dBm
dBm
dBm
dBm
Output Third Order Intercept (IP3)
(Pout= 0 dBm per tone, 1 MHz spacing)
0.5 - 2.0 GHz
2.0 - 3.0 GHz
3.0 - 4.0 GHz
30
28
25
dBm
dBm
dBm
Noise Figure DC - 2.0 GHz
2.0 - 4.0 GHz
3
4
dB
dB
Supply Current (Icq) 62 82 mA
Features
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
AMPLIFIERS - DRIVER & GAIN BLOCK - SMT
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Output Return Loss vs. Temperature
Broadband Gain & Return Loss Gain vs. Temperature
Reverse Isolation vs. Temperature
Input Return Loss vs. Temperature
Noise Figure vs. Temperature
-30
-20
-10
0
10
20
30
012345678
S21
S11
S22
RESPONSE (dB)
FREQUENCY (GHz)
0
5
10
15
20
25
30
012345
+25C
+85C
-40C
GAIN (dB)
FREQUENCY (GHz)
-30
-25
-20
-15
-10
-5
0
012345
+25C
+85C
-40C
RETURN LOSS (dB)
FREQUENCY (GHz)
-20
-15
-10
-5
0
012345
+25C
+85C
-40C
RETURN LOSS (dB)
FREQUENCY (GHz)
-30
-25
-20
-15
-10
-5
0
012345
+25C
+85C
-40C
REVERSE ISOLATION (dB)
FREQUENCY (GHz)
0
2
4
6
8
10
012345
+25C
+85C
-40C
NOISE FIGURE (dB)
FREQUENCY (GHz)
HMC478ST89 / 478ST89E
SiGe HBT GAIN BLOCK
MMIC AMPLIFIER, DC - 4 GHz
v05.0710
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
AMPLIFIERS - DRIVER & GAIN BLOCK - SMT
8
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Gain, Power & Output IP3 vs. Supply
Voltage for Constant Icc= 62 mA @ 850 MHz
P1dB vs. Temperature Psat vs. Temperature
Output IP3 vs. Temperature
Vcc vs. Icc Over Temperature for
Fixed Vs= 5V, RBIAS= 18 Ohms
0
4
8
12
16
20
24
012345
+25C
+85C
-40C
P1dB (dBm)
FREQUENCY (GHz)
0
4
8
12
16
20
24
012345
+25C
+85C
-40C
Psat (dBm)
FREQUENCY (GHz)
10
15
20
25
30
35
012345
+25C
+85C
-40C
IP3 (dBm)
FREQUENCY (GHz)
0
4
8
12
16
20
24
28
32
36
5678
Gain
P1dB
Psat
IP3
Gain (dB), P1dB (dBm), Psat (dBm), IP3 (dBm)
Vs (V)
40
45
50
55
60
65
70
75
80
3.8 3.85 3.9 3.95 4 4.05 4.1 4.15 4.2 4.25 4.3
Icc (mA)
Vcc (V)
+85C
+25C
-40C
Gain, Power & Output IP3 vs. Supply
Voltage for Rs = 18 Ohms @ 850 MHz
0
4
8
12
16
20
24
28
32
36
4.5 5 5.5
Gain
P1dB
Psat
IP3
Gain (dB), P1dB (dBm), Psat (dBm), IP3 (dBm)
Vs (V)
HMC478ST89 / 478ST89E
SiGe HBT GAIN BLOCK
MMIC AMPLIFIER, DC - 4 GHz
v05.0710
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
AMPLIFIERS - DRIVER & GAIN BLOCK - SMT
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Outline Drawing
Absolute Maximum Ratings
Collector Bias Voltage (Vcc) +6 Vdc
RF Input Power (RFIN)(Vcc = +4.2 Vdc) +5 dBm
Junction Temperature 150 °C
Continuous Pdiss (T = 85 °C)
(derate 9.5 mW/°C above 85 °C) 0.615 W
Thermal Resistance
(junction to lead) 105.6 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
ESD Sensitivity (HBM) Class 1C
HMC478ST89 / 478ST89E
SiGe HBT GAIN BLOCK
MMIC AMPLIFIER, DC - 4 GHz
v05.0710
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC478ST89 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] H478
XXXX
HMC478ST89E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H478
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
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
NOTES:
1. PACKAGE BODY MATERIAL:
MOLDING COMPOUND MP-180S OR EQUIVALENT.
2. LEAD MATERIAL: Cu w/ Ag SPOT PLATING.
3. LEAD PLATING: 100% MATTE TIN.
4. DIMENSIONS ARE IN INCHES [MILLIMETERS]
5. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15mm PER SIDE.
6. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25mm PER SIDE.
7. ALL GROUND LEADS MUST BE SOLDERED TO PCB RF GROUND.
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
AMPLIFIERS - DRIVER & GAIN BLOCK - SMT
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Application Circuit
Pin Descriptions
Recommended Component Values for Key Application Frequencies
Component
Frequency (MHz)
50 900 1900 2200 2400 3500
L1 270 nH 56 nH 18 nH 18 nH 15 nH 8.2 nH
C1, C2 0.01 μF 100 pF 100 pF 100 pF 100 pF 100 pF
Note:
1. External blocking capacitors are required on
RFIN and RFOUT.
2. RBIAS provides DC bias stability over temperature.
Recommended Bias Resistor Values
for Icc= 62 mA, Rbias= (Vs - Vcc) / Icc
Supply Voltage (Vs) 5V 6V 8V
RBIAS VALUE 18 Ω 35 Ω 67 Ω
RBIAS POWER RATING 1/8 W 1/4 W 1/2 W
HMC478ST89 / 478ST89E
SiGe HBT GAIN BLOCK
MMIC AMPLIFIER, DC - 4 GHz
v05.0710
Pin Number Function Description Interface Schematic
1RFIN This pin is DC coupled.
An off chip DC blocking capacitor is required.
3 RFOUT RF output and DC Bias (Vcc) for the output stage.
2, 4 GND These pins and package bottom
must be connected to RF/DC ground.
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
AMPLIFIERS - DRIVER & GAIN BLOCK - SMT
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Evaluation PCB
The circuit board used in the nal application
should use RF circuit design techniques. Signal
lines should have 50 Ohm impedance while the
package ground leads and package bottom 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 board should be mounted
to an appropriate heat sink. The evaluation circuit
board shown is available from Hittite upon request.
List of Materials for Evaluation PCB 110161 [1]
Item Description
J1 - J2 PC Mount SMA Connector
J3 - J4 DC Pin
C1 - C3 100 pF Capacitor, 0402 Pkg.
C4 1000 pF Capacitor, 0603 Pkg.
C5 2.2 μF Capacitor, Tantalum
R1 Resistor, 1210 Pkg.
L1 18 nH Inductor, 0603 Pkg.
U1 HMC478ST89 / HMC478ST89E
PCB [2] 108370 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
HMC478ST89 / 478ST89E
SiGe HBT GAIN BLOCK
MMIC AMPLIFIER, DC - 4 GHz
v05.0710
