MRFIC1804 [MOTOROLA]
1.8 GHz LOW NOISE AMPLIFIER AND DOWNMIXER GaAs MONOLITHIC INTEGRATED CIRCUIT; 1.8 GHz的低噪声放大器和下混砷化镓单片集成电路
| 型号： | MRFIC1804 |
| 厂家： | 
MOTOROLA |
| 描述： | 1.8 GHz LOW NOISE AMPLIFIER AND DOWNMIXER GaAs MONOLITHIC INTEGRATED CIRCUIT |
| 文件： | 总6页 (文件大小：86K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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by MRFIC1804/D
SEMICONDUCTOR TECHNICAL DATA
The MRFIC Line
Designed primarily for use in DECT, Japan Personal Handy Phone (JPHP),
and other wireless Personal Communication Systems (PCS) applications. The
MRFIC1804 includes a low noise amplifier and downmixer in a low-cost
SOIC-16 package. The integrated circuit requires minimal off-chip matching
while allowing for the maximum in flexibility and efficiency. The mixer is
optimized for low side injection and offers reasonable intercept point as well as
high efficiency and 4 dB of conversion gain. Image filtering is implemented
off-chip to allow maximum flexibility. With both TX and RX enable pins low, the
device is in standby mode and draws less than 0.5 mA.
1.8 GHz LOW NOISE
AMPLIFIER AND
DOWNMIXER
GaAs MONOLITHIC
INTEGRATED CIRCUIT
Together with the rest of the MRFIC180X series, this GaAs IC family offers
the complete transmit and receive functions, less LO and filters, needed for a
typical 1.8 GHz cordless telephone.
•
•
•
•
•
•
•
•
•
•
Usable Frequency Range = 1.5 to 2.2 GHz
14 dB Gain, 2.3 dB Noise Figure LNA
4 dB Gain, 13 dB Noise Figure Mixer
CASE 751B-05
(SO–16)
0.9 dB Mixer Input Intercept Point
Simple LO/IF Off-Chip Matching for Maximum Flexibility
Low Power Consumption = 24 mW (Typ)
Single Bias Supply = 2.7 to 3.3 V
Low LO Power Requirement = – 5 dBm (Typ)
Low Cost Surface Mount Plastic Package
Available in Tape and Reel by Adding R2 Suffix to Part Number.
R2 Suffix = 2,500 Units per 16 mm, 13 inch Reel.
•
Device Marking = M1804
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
IF OUT/V
DD
DD
GND
RF IN
GND
LO IN
GND
GND
MIXER
GND
GND
LNA OUT
GND
LNA IN
GND
LNA
RX EN
V
DD
Pin Connections and Functional Block Diagram
REV 2
Motorola, Inc. 1995
MAXIMUM RATINGS (T = 25°C unless otherwise noted)
A
Rating
Supply Voltage
Symbol
Limit
Unit
Vdc
dBm
dBm
Vdc
°C
V
DD
5
LNA Input Power (Standby Mode)
LO Input Power
LNA
10
in
P
LO
0
Receive Enable Voltage
Storage Temperature Range
Operating Ambient Temperature
RX EN
5
T
stg
– 65 to +150
– 30 to +85
T
A
°C
RECOMMENDED OPERATING RANGES
Parameter
Symbol
Value
Unit
GHz
GHz
MHz
Vdc
RF Input Frequency
f
1.8 to 1.925
1.5 to 1.9
70 to 325
2.7 to 3.3
2.7 to 3.3
RF
LO
Mixer LO Frequency
f
IF Output Frequency
f
IF
Supply Voltage
V
DD
Receive Enable Voltage
RX EN
Vdc
ELECTRICAL CHARACTERISTICS (V
= 3 V, T = 25°C, LO = 1790 MHz @ – 5 dBm, RF = 1.9 GHz , RX EN = 3 V)
A
DD
Min
—
—
—
—
—
—
16
—
—
Typ
14
2.3
–11
4
Max
—
Unit
dB
Characteristic
LNA Gain
LNA Noise Figure
—
dB
LNA Input 3rd Order Intercept
Mixer Conversion Gain (into 50 Ω)
Mixer Noise Figure
—
dBm
dB
—
13
0.9
—
—
dB
Mixer Input 3rd Order Intercept
Downconverter Gain (Less Image Filter Loss)
—
dBm
dB
—
Supply Current, RX Mode (RX EN = 3 V, LO
)
7
10
0.5
mA
mA
off
Standby Mode Current (RX EN = 0 V, LO off)
—
LO IN
L2
IF OUT
LNA IN
V
DD
C1
C2
L1
L3
C3
V
DD
C5
16 15 14 13 12 11 10
9
C1
C2
12 pF (110 MHz) or 7.5 pF (240 MHz)
0.8 pF
C3, C4 100 pF
C5
1000 pF
L1
L2
82 nH (110 MHz) or 15 nH (240 MHz)
8.2 nH
L3, L4
3.0 nH (Microstrip)
1
2
3
4
5
6
7
8
L4
LNA OUT
C4
V
MIXER IN
RX EN
DD
Figure 1. Applications Circuit Configuration (for 110 MHz and 240 MHz IF)
MRFIC1804
2
MOTOROLA RF DEVICE DATA
S
S
S
S
22
11
21
12
Freq (GHz)
1.5
Mag
0.801
0.741
0.641
0.559
0.533
0.512
0.494
0.478
0.467
0.452
0.383
0.326
0.271
0.205
0.708
0.462
Angle
–64.71
–70.03
–73.54
–72.72
–71.10
–71.20
–69.93
–68.86
–67.50
–66.18
–57.10
–47.69
–35.10
–15.07
–12.53
–34.07
Mag
5.65
6.07
6.63
6.70
6.58
6.32
5.92
5.79
5.88
5.98
5.57
5.06
4.61
4.12
1.84
3.18
Angle
–63.77
Mag
0.025
0.033
0.038
0.047
0.046
0.046
0.049
0.052
0.054
0.055
0.055
0.058
0.063
0.072
0.073
0.055
Angle
139.08
128.21
123.07
113.17
111.66
109.36
107.72
106.52
104.49
103.55
97.41
Mag
0.685
0.622
0.622
0.560
0.543
0.530
0.513
0.498
0.486
0.476
0.412
0.344
0.276
0.192
0.406
0.292
Angle
–62.55
–74.44
–83.36
–92.40
–93.20
–94.40
–95.19
–95.56
–96.35
–97.14
–96.10
–90.55
–83.89
–63.78
–48.22
–66.60
1.6
–80.96
1.7
–98.00
1.8
–113.87
–117.42
–120.25
–123.27
–126.51
–129.49
–132.33
–143.54
–155.69
–167.78
175.72
1.82
1.84
1.86
1.88
1.9
1.92
2.0
2.1
92.26
2.2
86.81
2.3
83.78
2.4
–155.83
–178.63
45.03
2.5
58.37
Table 1. LNA S–Parameters
1.0 nH
IF OUT
500
15 pF
Figure 2. Equivalent IF Output Circuit
MOTOROLA RF DEVICE DATA
MRFIC1804
3
TYPICAL CHARACTERISTICS
(V
DD
= 3 V)
18.5
18
0
16
2.17
2.16
f
f
= 1900 MHz
= 1790 MHz
RF
LO
–1
– 2
– 3
– 4
– 5
Gain
Conversion Gain
15
14
13
17.5
17
2.15
2.14
2.13
NF
16.5
16
1 dB
2.12
2.11
– 6
– 7
15.5
15
12
– 35
–15
5
25
45
C)
65
85
1.7
1.75
1.8
1.85
1.9
1.95
2
T, TEMPERATURE (
°
f, FREQUENCY (GHz)
Figure 3. Downconverter Conversion Gain (less Image
Filter) and 1 dB Compression versus Temperature
Figure 4. LNA Gain and Noise Figure
versus Frequency
6
0
– 2
– 4
– 6
6
5
4
3
2
1
Conversion Gain
1 dB
4
2
0
f
f
f
= 110 MHz
f
f
f
= 110 MHz
IF
IF
= 1900 MHz
= 1900 MHz
= 1790 MHz
= –10 dBm
RF
LO
RF
LO
= 1790 MHz
P
RF
0
– 35
–10
25
55
85
–10
– 7.5
– 5
– 2.5
0
T, TEMPERATURE (
°C)
P
, LO POWER (dBm)
LO
Figure 5. Mixer Conversion Gain and 1 dB
Compression versus Temperature
Figure 6. Mixer RF to IF Conversion Gain
versus LO Power
–15
–17
6
5
4
3
2
f
f
P
= 110 MHz
IF
= 1900 MHz
RF
f
= 110 MHz
IF
= – 5 dBm
LO
240 MHz
–19
– 21
– 23
– 25
f
P
= f
– IF
RF LO
1
0
= –10 dBm
RF
– 27
1.7
1.75
1.8
1.85
1.9
1.95
2
1.7
1.75
1.8
1.85
1.9
1.95
2
f, FREQUENCY (GHz)
f
, RF FREQUENCY (GHz)
RF
Figure 7. Mixer RF to IF Conversion Gain
versus RF Frequency
Figure 8. Mixer LO to IF Feed Through
versus RF Frequency
MRFIC1804
4
MOTOROLA RF DEVICE DATA
DESIGN AND APPLICATIONS INFORMATION
The MRFIC1804 consists of a two–stage GaAs MESFET
low noise amplifier and a single ended MESFET mixer. The
LNA design conserves bias current through stacking of the
two FETs, thus reusing the current. The mixer consists of a
common gate stage driving a common source stage with
the IF output being the drain of the common source stage
shunted with 15 pF. The LNA output and mixer input have
been separated to allow the addition of an external image
filter. Such a filter, usually ceramic, is useful in improving
the mixer noise figure and third order intercept perfor-
mance. It also provides LO rejection to reduce the amount
of LO power which may leak to the antenna. Alternatively,
image trapping can be implemented at the LNA input or out-
put with discrete or distributed components.
MHz to 350 MHz range, use the IF equivalent circuit shown
in Figure 2 for matching network design. As can be seen in
the characterization curves, performance appears to de-
grade above about 1.85 GHz. This is partially a function of
the circuit shown in Figure 1 and can be improved, first, by
adjusting the LO input match, second, by matching LNA in-
put and and the mixer input off chip.
As with all RF circuits, layout is important. Ground vias
must be close to the component or lead to be grounded and
vias must be plentiful. RF signal lines should be controlled
impedance such as microstrip. Bypassing of power supply
leads as shown in Figure 1 is essential to avoid oscillation of
the circuits.
EVALUATION BOARDS
The design has been optimized for application in the PCS
bands around 1.9 GHz but is usable from around 1.5 GHz to
2.2 GHz. For applications at 1.9 GHz and IFs of 110 MHz or
240 MHz, the circuit shown in Figure 1 can be used. This
circuit was used to derive the characterization data shown
in Figures 3 through 8. For other IF frequencies in the 100
Evaluation boards are available for RF Monolithic Inte-
grated Circuits by adding a “TF” suffix to the device type.
For a complete list of currently available boards and ones
in development for newly introduced poduct, please con-
tact your local Motorola Distributor or Sales Office.
MOTOROLA RF DEVICE DATA
MRFIC1804
5
PACKAGE DIMENSIONS
–A–
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
16
1
9
8
–B–
P 8 PL
M
S
0.25 (0.010)
B
G
MILLIMETERS
INCHES
DIM
A
B
C
D
MIN
9.80
3.80
1.35
0.35
0.40
MAX
10.00
4.00
1.75
0.49
1.25
MIN
MAX
0.393
0.157
0.068
0.019
0.049
F
0.386
0.150
0.054
0.014
0.016
R X 45
K
C
F
–T–
SEATING
PLANE
G
J
K
M
P
R
1.27 BSC
0.050 BSC
J
0.19
0.10
0
0.25
0.25
7
0.008
0.004
0
0.009
0.009
7
M
D
16 PL
5.80
0.25
6.20
0.50
0.229
0.010
0.244
0.019
M
S
S
0.25 (0.010)
T
B
A
CASE 751B–05
ISSUE J
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the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit,
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MRFIC1804/D
◊
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