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Preliminary
Product Description
Sirenza Microdevices SGA-7489 is a high performance cascadeable 50-ohm amplifier designed for operation at 5 Volts DC. This RFIC uses the latest Silicon Germanium Heterostructure Bipolar Transistor (SiGe HBT) process featuring 1 micron emitters with FT up to 50 GHz. This circuit uses a darlington pair topology with resistive feedback for broadband performance as well as stability over its entire temperature range. Internally matched to 50 ohm impedance, the SGA-7489 requires only DC blocking and bypass capacitors and a bias inductor for external components. Frequency performance may be extended using the 2 GHz application circuit shown on sheet 5.
S21 vs. Frequency, T=+25C, Id=130 mA 25 20 S21 (dB) 15 10 5 0 0 500 1000 1500 2000 2500 3000 Frequency (M Hz)
Sy mbol Parameters: Test Conditions: Z0 = 50 Ohms, ID = 130 mA, T = 25oC Output Pow er at 1dB Compression f f f f f f f f f f f f = = = = = = = = = = = =
SGA-7489
DC-3000 MHz Silicon Germanium HBT Cascadeable Gain Block
Product Features DC-3000 MHz Operation Single Voltage Supply High Output Intercept: +36 dBm typ. at 850 MHz Low Noise Figure: 2.9 dB typ. at 850 MHz Applications Oscillator Amplifiers PA for Low / Medium Power Applications IF/ RF Buffer Amplifier Drivers for CATV Amplifiers LO Driver Amplifier
Units Min. Ty p. 22.8 22.6 22.4 20.3* 38.6 37.2 36.0 35.7* 23.7 23.0 22.0 18.3* 3000 11.8 9.3 25.8 25.8 25.4 22.7* 2.9 5.0 117 130 82 143 * Using 2 GHz App.Ckt. (sheet 5) Max. Notes * Using 2 GHz App.Ckt. (sheet 5) * Using 2 GHz App.Ckt. (sheet 5) * Using 2 GHz App.Ckt. (sheet 5)
P1dB
100 M Hz 500 M Hz 850 M Hz 1950 M Hz * 100 M Hz 500 M Hz 850 M Hz 1950 M Hz * 100 M Hz 500 M Hz 850 M Hz 1950 M Hz *
dBm dBm dBm dBm dBm dBm dBm dBm dB dB dB dB M Hz
OIP3
Output Third Order Intercept Point Pow er out per tone = 0 dBm
S21 Bandw idth VSWRIN VSWROUT S12 NF VD ID RTH, j-l
Small Signal Gain
(Determined by S11, S22 Values) Input Return Loss Output Return Loss f = DC-3000 M Hz f = DC-3000 M Hz f f f f = = = = 100 M Hz 500 M Hz 850 M Hz 1950 M Hz *
dB dB dB dB dB dB dB V mA
o
Reverse Isolation
Noise Figure, ZS = 50 Ohms Device Operating Voltage Device Operating Current Thermal Resistance (junction - lead)
f = 850 M Hz
C/W
The information provided herein is believed to be reliable at press time. Sirenza Microdevices assumes no responsibility for inaccuracies or omissions. Sirenza Microdevices assumes no responsibility for the use of this information, and all such information shall be entirely at the users own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. Sirenza Microdevices does not authorize or warrant any Sirenza Microdevices product for use in life-support devices and/or systems. Copyright 2001 Sirenza Microdevices, Inc.. All worldwide rights reserved.
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
1
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EDS-101801 Rev B
Preliminary Preliminary SGA-7489 DC-3000 MHz 5V SiGe Amplifier
Parameter 100 MHz Gain Noise Figure Output IP3 Output P1dB Input Return Loss Reverse Isolation 500 MHz Gain Noise Figure Output IP3 Output P1dB Input Return Loss Reverse Isolation 850 MHz Gain Noise Figure Output IP3 Output P1dB Input Return Loss Reverse Isolation 1950 MHz Gain Noise Figure Output IP3 * Output P1dB * Input Return Loss Reverse Isolation Ty pical 23.7 2.7 38.6 22.8 15.0 25.8 23.0 2.7 37.2 22.6 16.2 25.8 22.0 2.9 36.0 22.4 17.3 25.4 18.2 --33.3 19.9 15.5 22.9 Unit dB dB dBm dBm dB dB dB dB dBm dBm dB dB dB dB dBm dBm dB dB dB dB dBm dBm dB dB Test Condition (ID = 130 mA ,T L =25oC unless otherwise noted)
ZS = 50 Ohms Tone spacing = 1 M Hz, Pout per tone = 0 dBm
ZS = 50 Ohms Tone spacing = 1 M Hz, Pout per tone = 0 dBm
ZS = 50 Ohms Tone spacing = 1 M Hz, Pout per tone = 0 dBm
ZS = 50 Ohms Tone spacing = 1 M Hz, Pout per tone = 0 dBm
2400 MHz dB Gain 16.9 --dB ZS = 50 Ohms Noise Figure dBm Output IP3 * 31.9 Tone spacing = 1 M Hz, Pout per tone = 0 dBm dBm Output P1dB * 18.9 13.8 dB Input Return Loss 21.7 dB Reverse Isolation * NOTE: P1dB and IP3 @1950,2400 MHz may be improved by using the tuned circuit shown on sheet 5
Absolute Maximum Ratings
Parameter Max. Device Current (ID) Max. Device Voltage (VD) Max. RF Input Pow er Max. Junction Temp. (TJ)
Operating Temp. Range (TL)
Absolute Limit
160 mA
7V +10 dBm
+150C -40C to +85C +150C
Max. Storage Temp.
Operation of this device beyond any one of these limits may cause permanent damage. For reliable continous operation, the device voltage and current must not exceed the maximum operating values specified in the table on page one. Bias Conditions should also satisfy the follow ing expression: IDVD < (TJ - TL) / RTH, j-l
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
http://www.sirenza.com
Preliminary Preliminary SGA-7489 DC-3000 MHz 5V SiGe Amplifier
Pin # 1 Description RF input pin. This pin requires the use of an external DC blocking capacitor chosen for the frequency of operation. GND Connection to ground. Use via holes for best performance to reduce lead inductance. Place vias as close to ground leads as possible. RF OUT/Vcc RF output and bias pin. Bias should be supplied to this pin through an external series resistor and RF choke inductor. Because DC biasing is present on this pin, a DC blocking capacitor should be used in most applications (see application schematic). The supply side of the bias netw ork should be w ell bypassed. GND Same as Pin 2.
Application Circuit Component Description
Function RF IN
Device Schematic
2
3
4
Recommended Bias Resistor Values
Supply Voltage(Vs) Rbias (Ohms) Pow er Rating (W) 7V 15 0.5 8V 22 0.5 9V 30 1.0
Choose circuit components such that the following conditions are met at the minimum operational frequency :
XLb >= 250 Ohms XCc <= 10 Ohms XCd <= 1 Ohm
Bias Inductor Input / Output Coupling Capacitors Decoupling Capacitors
+Vs
Rbias Cd
Lb Cc1 RF input SGA-7489 Cc2 RF Output
SGA-7489 Basic Application Circuit
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
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Preliminary Preliminary SGA-7489 DC-3000 MHz 5V SiGe Amplifier
S-Parameter Data @ -40C,+25C,+85C ,Id =130 mA
S21 v s. Freq. @-40C,+25C,+85C
30 24 0 -5
S11 v s. Freq. @-40C,+25C,+85C
S21(dB)
18 12 6 0 0 500 1000 1500 2000 2500 3000
S11(dB)
S21(-40C) S21(+25C) S21(+85C)
-10 -15 -20 -25 0 500 1000 1500 2000 2500 3000
S11(-40C S11(+25 S11(+85
Frequency (MHz)
Frequency (MHz)
S12 v s. Freq. @-40C,+25C,+85C
0 -6 0 -8
S22 v s. Freq. @-40C,+25C,+85C
S12(dB)
-12 -18 -24 -30 0 500 1000 1500 2000 2500 3000
S22(dB)
S12(-40C) S12(+25C) S12(+85C)
-16 -24 -32 -40 0 500 1000 1500 2000 2500 3000
S22(-40C S22(+25 S22(+85
Frequency (M Hz)
Frequency (M Hz)
P1dB & IP3 vs. Frequency @ 3 Temps. Id= 130 mA
45
IP3
40
Level (dBm)
35 30
P1dB
25 20 15 10 0 100 200 300 400 500 600 700 800 900
P1dB(-40C) P1dB(+25C) P1dB(+85C) IP3(-40C) IP3(+25C) IP3(+85C)
Frequency (MHz)
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2 GHz Application Ckt. Board
+Vcc Ground
Preliminary Preliminary SGA-7489 DC-3000 MHz 5V SiGe Amplifier The SGA-7489 may be tuned in the manner shown below for operation at 2 GHz. Component Parts List
Component Ty pe Cc1,Cc2, Cd1 CM1 Value 100 pF 1.2 pF 1.5 pF 0.1 uF 22 nH 30 Ohms, 1/4 W Manufacturer P/N ROHM ROHM ROHM ROHM TOKO ROHM MCH185A101JK MCH185A1R2JK MCH185A1R5JK MCH182FN1042K LL1608FS22NJ Type MRC 18
Rb1 Rb2
Cd2
SGA-7489
Cd1 Lb
CM1
Cc1
CM2
Cc1
CM2 Cd2 Lb
IN
OUT
STANFORD MICRODEVICES ECB-100607 Rev-A SOT-89 Eval Board
+7V Rb2
Rb1,Rb2
Table of Delay Elements
Ref. Desig. Zo (Ohms) Phase Delay @ 2 GHz (Degrees)
Rb1
Cd1
Z1
Cd2
50 50 50
14.5 34.1 21.5
Z2
Lb Cc1 RF input
Z1 Z2
Z3
Cc2 RF Output
SGA-7489
Z3
CM1
CM2
Note: Separation Distance between via holes on board represents approx. 5.4 Degrees phase shift @ 2GHz for equivalent distance on microstrip. Board material is GETEK,e=4.1
SGA-7489 2 GHz Application Circuit
SGA-7489 2 GH z Tuned Application C kt. Summary D ata Table
Ty pical 25oC 18.6 3.1 36.1 20.8 10.0 23.8 18.3 3.3 36.0 20.4 11.2 23.0 18.2 3.7 34.5 19.9 16.3 22.1 Unit dB dB dBm dBm dB dB dB dB dBm dBm dB dB dB dB dBm dBm dB dB Test Condition (ID = 130 mA, unless otherwise noted)
Parameter 1700 MHz Gain Noise Figure Output IP3 Output P1dB Input Return Loss Reverse Isolation 1900 MHz Gain Noise Figure Output IP3 Output P1dB Input Return Loss Reverse Isolation 2100 MHz Gain Noise Figure Output IP3 Output P1dB Input Return Loss Reverse Isolation
ZS = 50 Ohms Tone spacing = 1 MHz, Pout per tone = 0 dBm
ZS = 50 Ohms Tone spacing = 1 MHz, Pout per tone = 0 dBm
ZS = 50 Ohms Tone spacing = 1 MHz, Pout per tone = 0 dBm
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
http://www.sirenza.com
Preliminary Preliminary SGA-7489 DC-3000 MHz 5V SiGe Amplifier
Gain v s. Frequency for 2GHz Tuned Circuit, Id = 130 mA, T=+25C
25 20 40 35
P1dB & IP3 v s. Frequency for 2GHz Tuned Circuit, Id =130 mA, T=+25C
IP3
Level (dBm)
30 25 20 15 10 5
Gain (dB)
15 10 5 0 500 1000 1500 2000 2500 3000
P1dB
0 500 1000 1500 2000 2500 3000
Frequency (M Hz)
Frequency (M Hz)
S-Parameter Data for 2 GHz Tuned Application Circuit
S21 v s. Frequency , Id =130 mA, T=+25C
25 20
S11 v s. Frequency , Id =130 mA, T=+25C
0 -6
S21(dB)
15 10 5 0 0 500 1000 1500 2000 2500 3000
S11(dB)
-12 -18 -24 -30 0 500 1000 1500 2000 2500 300
Frequency (M Hz)
Frequency (M Hz)
S12 v s. Frequency , Id =130 mA, T=+25C
0 -10
S22 v s. Frequency , Id =130 mA, T=+25C
0 -8
S12(dB)
-20 -30 -40 -50 0 500 1000 1500 2000 2500 3000
S22(dB)
-16 -24 -32 -40 0 500 1000 1500 2000 2500 300
Frequency (M Hz)
522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC
Frequency (M Hz)
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Preliminary Preliminary SGA-7489 DC-3000 MHz 5V SiGe Amplifier
Noise Figure vs. Frequency for SGA-7489 2GHz Tuned Circuit ,Id=130 mA, T=+25C 10 8
NF (dB)
6 4 2 0 1000
1500
2000
Frequency (MHz)
2500
3000
Id vs. Vd Variation over Temperature for Vs=7 Volts and Rbias = 15 Ohms for SGA-7489 180
Pd max(T j=150C) =790mW
160 Id (mA) 140 120
-40C +85C
100 80 4.5 4.6 4.7 4.8 4.9 5 5.1 Vd (Volts) 5.2 5.3 5.4 5.5
Plot of Vd vs. Temp. @ Id =130 mA (no signal) 5.3 5.2 Vd (Volts) 5.1 5.0 4.9 4.8 4.7 4.6 -50 -30 -10 10 30 50 70 90 Temperature (Deg. C)
522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC http://www.sirenza.com
Preliminary Preliminary SGA-7489 DC-3000 MHz 5V SiGe Amplifier
Caution: ESD sensitive Part Number Ordering Information
Part N umber SGA-7489 R eel Siz e 13" D ev ices/R eel 3000
Appropriate precautions in handling, packaging and testing devices must be observed.
Part Symbolization The part will be symbolized with A74 designator on the top surface of the package.
Package Dimensions
Pin # 1 2 3 4
Functi on RFi n Gnd RFout/Vcc Gnd
1
A74
2
4
3
PCB Pad Layout
DIMENSIONS ARE IN INCHES [MM]
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
http://www.sirenza.com

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