Down Converter, 1500 - 2000 MHz
SA65
-
0003
QSOP-16
V 1.00
Features
n
LNA Mixer integration.
n
Typical conversion gain of 7 dB.
n
Typical Two-Tone IM Ratio of
50 dBm.
n
LO Drive-Level: +13 dBm.
n
Surface Mount QSOP16 Package.
n
Low Cost/High Performance.
n
50 ohm Nominal Impedance.
Description
M/A-COM's SA65-0003 is an integrated assembly contain-
ing a GaAs FET MMIC LNA and GaAs FET mixer. This
device is packaged in a 16-leaded QSOP plastic surface
mount package. The amplifier can be biased with either
+3V or +5V, the mixer requires no DC bias. The conversion
gain of the integrated combination is typically 6 dB at +3V
bias and 8 dB at +5V bias. The SA65-0003 is ideally
suited for RF/IF communications applications requiring
down conversion with some gain.
This MCM contains a mixer that is fabricated using a
mature 1-micron GaAs process, it also contains an LNA
that is fabricated using a low cost mature 0.5-micron gate
length GaAs MESFET process. Both die feature full
passivation for increased performance and reliability.
Recommended PCB Layout
Functional Block Diagram
Down Converter, 1500 - 2000 MHz
SA65-0003
Specifications subject to change without notice.
n
North America: Tel. (800) 366-2266
n
Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n
Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
V 1.00
2
Parameter
Test Conditions
1
Units
Min
Typical
Max
Conversion Gain
6,7
LNA +3V
LNA +5V
dB
dB
3.1
4.6
6.0
8.0
6.6
8.8
Isolation
4
LO to RF IN
LO to IF
dB
dB
29
19
32
23
--
--
Reverse Isolation
5
LNA +3V
dB
30
40
--
VSWR
LO
RF IN
IF
Ratio
Ratio
Ratio
--
--
--
1.4:1
1.9:1
1.9:1
--
2.5:1
2.1:1
Input IP
3
1,2,3
LNA +3V
LNA +5V
dB
dB
13
21
17.5
25
--
--
Electrical Specifications
T
A
= +25C, Z
0
=50 Ohms, RF = -10 dBm
1
,
LO = +13 dBm, I
DD
45 mA
1. For IP
3
measurements, RFIN = -24 dBm, this low RF IN level gets amplified through the LNA.
2. For IP
3
measurements, RFIN2 = RFIN1 + 10 MHz, LO = RFIN1--140 MHz.
3. For IP
3
measurements, IP3 = IMR/2 + PIN.
4. RF IN to IF Isolation is typically 0 dB.
5. Reverse Isolation is measured from IF to RFIN with the IF at 10 dBm, LO at +13 dBm.
6. The amplifier has a normal gain of 12.5 dB, 3V bias and 14.0 dB, 5V bias. Amplifier typical Noise Figure = 1.5 dB.
7. NF
T
= NF
1
+ (NF2 - 1)/G1
Absolute Maximum Ratings
8
Parameter
Absolute Maximum
RF Input Power
9
+17 dBm
LO Drive Power
9
+23 dBm
V
DD
+10 VDC
Current
10
80 mA
Channel Temperature
11
+150C
Operating Temperature
-40C to +85C
Storage Temperature
-65C to +150C
8.
Operation of this device above any one of these
parameters may cause permanent damange.
9.
Total power for RF and LO ports should not exceed +23
dBm.
10. When pin #2 is used to increase current--see note 6
above.
11. Thermal resistance (
?
jc) = +95C/W.
Pin Configuration
Pin #
Function
Description
1
GND
RF and DC Ground
2
RES
External current control (optional)
3
GND
RF and DC Ground
4
RF IN
RF Input of the amplifier
5
GND
RF and DC Ground
6
LO
LO port of the mixer
7
GND
RF and DC Ground
8
IF
IF port of the mixer
9
RF GND
RF and DC Ground
10
GND
RF and DC Ground
11
RF
12
RF port of the mixer
12
GND
RF and DC Ground
13
RF OUT
12
RF output of the amplifier
14
GND
RF and DC Ground
15
V
DD
Positive supply voltage
16
GND
RF and DC Ground
12. The output port of the amplifier, RFOUT, and the input
port of the mixer, RF, are adjacently placed so that an
external filter can be used.
Down Converter, 1500 - 2000 MHz
SA65-0003
Specifications subject to change without notice.
n
North America: Tel. (800) 366-2266
n
Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n
Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
V 1.00
Typical Performance Curves
3
Gain
Isolation at +3V
Part
Value
Purpose
C1
47 pF
DC Block
C2
47 pF
By-pass
C3
3.3 pF
LO Port Matching Network
L1
3.9 nH
Tuning
L2
3.0 nH
LO Port Matching Network
L3
12 nH
RF Choke
R1
See Note 14
Optional Current Control
R2
5.1 k Ohms
DC Return
R3
330 Ohms
LO Port Matching Network
External Circuitry Parts
13
13. All external circuitry parts are readily available, low cost
surface mount components (.060 in. x .030 in. or .080 in.
x .050 in.).
14. Pin 2 allows use of an external resistor to ground for op-
tional higher current. For 20 mA operation, no resistor is
used.
For I
DD
30 mA, R2 = 43 Ohms
For I
DD
45 mA, R2 = 15 Ohms
For I
DD
60 mA, R2 = 10 Ohms
Spurious Table
-12
-37
-65
-75
-75
4X
-1.9
-39
-72
-77
-77
-2.8
-29
-68
-66
-74
3X
7.1
-30
-70
-77
-75
Harmonic
7.0
-27
-37
-68
-74
of LO (n)
2X
11.8
-27
-47
-75
-75
4.5
0
-48
-69
-74
1X
11.8
0
-58
-76
-76
N/A
-5
-34
-69
-70
0X
N/A
-5
-46
-75
-70
0X
1X
2X
3X
4X
The spurious table shows the spurious signals resulting from
the mixing of the RFIN and LO input signals, assuming down
conversion. The number of dB below the conversion loss
level indicates the mixing products. The lower frequency
mixing term is shown for two different input levels. The top
number is for an RFIN power level of 19 dB; the lower
number is for 29 dB. Assuming the LNA gain is
approximately 14 dB, the mixer input will see approximately
5 dB and 15 dB.
|mF
RF
- nF
LO
|, RF = -19 dB RF = 1850 MHz
|mF
RF
- nF
LO
|, RF = -29 dB LO = 1710 MHz
Harmonic
of RFIN (m)
2
4
6
8
10
1.5
1.6
1.7
1.8
1.9
2.0
Frequency (GHz)
Gain (dB)
+3V
+5V
0
10
20
30
40
1.5
1.6
1.7
1.8
1.9
2.0
Frequency (GHz)
Isolation (dB)
L-I
L-R
Down Converter, 1500 - 2000 MHz
SA65-0003
Specifications subject to change without notice.
n
North America: Tel. (800) 366-2266
n
Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n
Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
V 1.00
Typical Performance Curves
4
IIP3
VSWR at +3V
Ordering Information
Part Number
Package
SA65-0003
Bulk Packaging
SA65-0003TR
Tape and Reel (1K Reel)
SA65-0003-TB
Units Mounted on Test Board
0
5
10
15
20
1.5
1.6
1.7
1.8
1.9
2.0
Frequency (GHz)
IIP3 (dB)
+5V
+3V
1.0
1.5
2.0
2.5
3.0
1.7
1.8
1.9
2.0
Frequency (GHz)
VSWR
IF
LO
RF
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