0.8 – 6 GHz 3 V Downconverter
Technical Data
IAM-91563
Features
• +0 dBm Input IP
3
at 1.9 GHz
• Single +3V Supply
• 8.5 dB SSB Noise Figure at
1.9 GHz
• 9.0 dB Conversion Gain at
1.9 GHz
• Ultra-miniature Package
Surface Mount Package
SOT-363 (SC-70)
Description
Hewlett-Packard’s IAM-91563 is an
economical 3V GaAs MMIC mixer
used for frequency down-conver-
sion. RF frequency coverage is
from 0.8 to 6 GHz and IF coverage
is from 50 to 700 MHz. Packaged
in the SOT-363 package, this
4.0 sq. mm. package requires half
the board space of a SOT-143 and
only 15% the board space of an
SO-8 package.
At 1.9 GHz, the IAM-91563 pro-
vides 9 dB of conversion gain,
thus eliminating an RF or IF gain
stage normally needed with a
lossy mixer. LO drive power is
nominally only -5 dBm, eliminat-
ing an LO buffer amplifier. The
8.5 dB noise figure is low enough
to allow the system to use a low
cost LNA. The -6 dBm Input IP
3
provides adequate system linearity
for most commercial applications,
but is adjustable to 0 dBm.
The circuit uses GaAs PHEMT
technology with proven reliability,
and uniformity. The MMIC
consists of a cascode FET struc-
ture that provides unbalanced gm
modulation type mixing. An on-
chip LO buffer amp drives the
mixer while bias circuitry allows a
single +3V supply (through a
choked IF port). The LO port is
internally matched to 50
Ω.
The
RF and IF ports are high imped-
ance and require external match-
ing networks.
5965-9973E
Applications
• Downconverter for PCS,
PHS, ISM, WLL, and other
Wireless Applications
Pin Connections and
Package Marking
LO 1
6 IF and V
d
91
GND 2
RF 3
5 GND
4 SOURCE
BYPASS
Note:
1. Package marking provides orienta-
tion and identification.
Simplified Schematic
IF and V
d
6
LO
1
SOURCE
BYPASS
RF
3
GROUND
2, 5
4
7-135
IAM-91563 Absolute Maximum Ratings
Symbol
V
d
V
RF,
V
LO
P
in
T
ch
T
STG
Parameter
Device Voltage, RF output to ground
RF voltage or LO voltage to ground
CW RF Input Power
Channel Temperature
Storage Temperature
Absolute
Units Maximum
[1]
V
V
dBm
°C
°C
6.0
+0.5, -1.0
+13
150
-65 to 150
Thermal Resistance
[2]
:
θ
ch-c
= 310°C/W
Notes:
1. Permanent damage may occur if
any of these limits are exceeded.
2. T
C
= 25°C (T
C
is defined to be the
temperature at the package pins
where contact is made to the
circuit board).
IAM-91563 Electrical Specifications,
T
C
= 25°C, V
d
= 3 V
Symbol
G
test
NF
test
I
d
NF
Parameters and Test Conditions
Gain in test circuit
[1]
Noise Figure in test circuit
[1]
Device Current
Noise Figure (RF & IF with external matching,
IF=250 MHz, LO power=-5 dBm)
f = 0.9 GHz
f = 1.9 GHz
f = 2.4 GHz
f = 4.0 GHz
f = 6.0 GHz
f = 0.9 GHz
f = 1.9 GHz
f = 2.4 GHz
f = 4.0 GHz
f = 6.0 GHz
f = 0.9 GHz
f = 1.9 GHz
f = 2.4 GHz
f = 4.0 GHz
f = 6.0 GHz
RF=1890 GHz, IF=250 MHz
RF=1890 GHz, IF=250 MHz
Units Min. Typ. Max.
Std Dev
[2]
dB
dB
mA
dB
6.0
4.0
9.0
8.5
9.0
7.0
8.5
11.0
16.5
18.0
11.0
9.0
7.7
4.6
1.7
-6.7
-8.0
-8.7
-15.0
-17.8
-1.7
-9.4
-3.7
-6.0
0
18
2
4
11.0
12.0
0.5
G
c
Conversion gain (RF and IF with external matching,
IF=250 MHz, LO power=-5 dBm)
dB
1.5
P
1 dB
Output power @ 1 dB compression (RF and IF with
external matching, IF=250 MHz, LO power =-5 dBm)
dBm
1.3
RL
RF
RL
LO
RL
IF
IP
3
IP
3
RF port return loss
LO port return loss
IF port return loss
Input Third Order Intercept Point
I
d
= 9.0 mA, LO power = -5 dBm
Input Third Order Intercept Point
I
d
= 15 mA, LO power = -2 dBm
f = 0.5 - 6.0 GHz
f = 0.5 - 6.0 GHz
f = 50 - 700 MHz
RF = 1.9 GHz, IF = 250 MHz
RF = 1.9 GHz, IF = 250 MHz
RF = 1.9 GHz
dB
dB
dB
dBm
dBm
dB
dB
dB
0.2
0.3
0.2
1.3
1.1
ISOL
L-R
LO-RF Isolation
ISOL
R-I
RF-IF Isolation (No Match)
ISOL
L-I
LO-IF Isolation (No Match)
Notes:
1. Guaranteed specifications are 100% tested in the circuit in Figure 18 in the Applications Information section.
2. Standard deviation number is based on measurement of at least 500 parts from three non-consecutive wafer lots during
the initial characterization of this product, and is intended to be used as an estimate for distribution of the typical
specification.
7-136
IAM-91563 Typical Performance,
T
C
= 25°C, V
d
= 3.0 V, RF=1890 MHz, LO = -5 dBm, IF = 250 MHz,
unless otherwise stated.
7-137
IAM-91563 Typical Performance,
T
C
= 25°C, V
d
= 3.0 V, RF=1890 MHz, LO = -5 dBm, IF = 250 MHz,
unless otherwise stated.
12
12
12
SSB NOISE FIGURE (dB)
CONVERSION GAIN (dB)
8
8
CONVERSION GAIN (dB)
10
10
10
8
6
4
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
6
4
T
A
= 3.3V
T
A
= 3.0V
T
A
= 2.7V
6
4
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
2
0
100
200 300 400
500 600 700
IF FREQUENCY (MHz)
2
0
100
200 300 400
500 600 700
IF FREQUENCY (MHz)
2
0
100
200 300 400
500 600 700
IF FREQUENCY (MHz)
Figure 10. SSB Noise Figure vs.
Frequency and Temperature.
Figure 11. Conversion Gain vs.
Frequency and Supply Voltage.
Figure 12. Conversion Gain vs.
Frequency and Temperature.
14
P
1 dB
and INPUT IP
3
(dBm)
0
ISOLATION (dB, No Match)
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
LO-RF
RF-IF
LO-IF
NF
CONVERSION GAIN and
NOISE FIGURE
(dB)
12
-2
IP
3
-4
10
8
GAIN
6
-6
P
1 dB
-8
4
-10
-9
-8
-7
-6
-5 -4
-3
-2
-1
-10
-10
-20
-9
-8
-7
-6
-5 -4
-3
-2
-1
0
1
2
3
4
5
6
LO POWER (dBm)
RF FREQUENCY (GHz)
LO POWER (dBm)
Figure 13. Available Conversion Gain
and Noise Figure vs. LO Drive Power.
Figure 14. One dB Compression and
Input Third Order Intercept vs. LO
Drive Power.
Figure 15. Isolation (LO-RF, RF-IF,
LO-IF) vs. Frequency with no RF and
IF Matching Networks.
0
-4
-8
ISOLATION (dB)
RF-LO
-12
-16
-20
-24
-28
-32
-36
-40
0
1
2
3
4
5
6
RF FREQUENCY (GHz)
LO-IF
RF-IF
Figure 16. Isolation (RF-LO, RF-IF,
LO-IF) vs. Frequency with RF and IF
Matching Networks.
7-138
IAM-91563 Typical Reflection Coefficients,
T
C
= 25°C, Z
O
= 50
Ω,
V
d
= 3 V
Frequency (GHz)
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
6
RF (Mag)
RF (Ang)
LO (Mag)
0.43
0.39
0.39
0.39
0.39
0.39
0.40
0.39
0.39
0.38
0.39
0.39
0.40
0.39
0.39
0.39
0.39
0.39
0.38
0.39
0.38
0.38
0.37
0.37
0.36
0.36
0.35
0.35
0.34
0.34
0.33
0.33
0.32
0.32
0.31
0.32
0.31
0.30
0.30
0.29
0.29
0.28
0.29
0.27
0.28
0.26
0.28
0.25
0.27
0.25
0.27
0.25
0.27
0.25
0.27
0.25
0.27
0.25
0.26
0.24
LO (Ang)
-1
-6
-8
-9
-10
-11
-14
-14
-16
-17
-17
-19
-22
-22
-24
-25
-26
-27
-29
-29
-31
-31
-32
-33
-34
-35
-36
-36
-37
-37
-38
-39
-39
-40
-40
-42
-42
-45
-43
-46
-45
-47
-48
-49
-50
-51
-52
-52
-54
-54
-57
-56
-58
-58
-61
-61
-64
-65
-67
-65
IF (Mag)
0.64
0.63
0.63
0.63
0.62
0.62
0.62
IF (Ang)
-8
-9
-10
-10
-11
-12
-13
0.91
0.91
0.91
0.92
0.91
0.88
0.87
0.85
0.84
0.83
0.82
0.82
0.81
0.81
0.81
0.81
0.81
0.80
0.80
0.81
0.81
0.81
0.82
0.83
0.83
0.83
0.85
0.86
0.87
0.85
0.83
0.83
0.82
0.83
0.83
0.84
0.84
0.84
0.85
0.84
0.85
0.85
0.85
0.86
0.85
0.84
0.84
0.84
0.83
0.83
0.81
0.81
0.80
-18
-21
-23
-25
-28
-29
-32
-33
-34
-35
-37
-37
-39
-40
-41
-42
-44
-45
-45
-46
-48
-50
-51
-53
-55
-56
-59
-61
-64
-67
-71
-71
-73
-76
-79
-82
-85
-87
-91
-95
-97
-100
-103
-106
-108
-113
-115
-117
-121
-123
-125
-128
-130
7-139
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
