MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document
by MRFIC1803/D
The MRFIC Line
Designed primarily for use in DECT, Japan’s Personal Handy System (PHS),
and other wireless Personal Communication Systems (PCS) applications at 1.8
GHz, but also applicable to Industrial, Scientific and Medical (ISM) applications
at 2.5 GHz. The MRFIC1803 is a complete active upmixer, exciter amplifier, and
LO buffer amplifier in a low-cost SOIC-16 package. The low power consumption
design includes a single balanced active mixer, CMOS compatible receive and
transmit enable inputs, a buffer/exciter amplifier, and a buffered LO output
capable of driving the MRFIC1804 downconverter. IF, LO and RF ports are
matched to 50
Ω
and no off-chip baluns are required. With both TX and RX
enable pins low, the device is in standby mode and draws less than 0.3 mA.
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.
•
10 dB IF to RF Conversion Gain
•
Usable Frequency Range = 1.7 to 2.5 GHz
•
Low Power Consumption = 80 mW (Typ)
•
Single Bias Supply = 2.7 to 3.3 V
•
No External Baluns Required
•
IF, LO and RF Ports Matched to 50
Ω
•
Low LO Power Requirement = –10 dBm (Typ)
•
Low Cost Surface Mount Plastic Package
•
Order MRFIC1803R2 for Tape and Reel.
R2 Suffix = 2,500 Units per 16 mm, 13 inch Reel.
•
Device Marking = M1803
MAXIMUM RATINGS
(TA = 25°C unless otherwise noted)
Ratings
Supply Voltage
IF Input Power
LO Input Power
Transmit and Receive Enable Voltage
Storage Temperature Range
Operating Ambient Temperature
1.8 GHz UPMIXER,
EXCITER AND LO AMP
GaAs MONOLITHIC
INTEGRATED CIRCUIT
LIFETIME BUY
CASE 751B-05
(SO–16)
Symbol
VDD
PIF
PLO
TX EN, RX EN
Tstg
TA
Value
5.5
3
3
5.5
– 65 to +150
– 30 to + 85
Unit
Vdc
dBm
dBm
Vdc
°C
°C
GND
GND
LO OUT
GND
GND
RF OUT
GND
VDD
1
2
3
4
5
6
7
8
ACTIVE
BALANCED
MIXER
EXCITER
LO BUFFER
AND SWITCH
16
15
RX EN
GND
14 LO IN
13 GND
12 GND
11
10
9
IF IN
GND
TX EN
Pin Connections and Functional Block Diagram
REV 3
©
MOTOROLA RF DEVICE DATA
Motorola, Inc. 1997
MRFIC1803
1
LAST ORDER 19/12/99
LAST SHIP 18/06/00
1.8 GHz Upconverter
MRFIC1803
RECOMMENDED OPERATING RANGES
Parameter
LO Input Frequency
LO Input Power
IF Input Frequency
RF Output Frequency
Transmit and Receive Enable Voltage
Supply Voltage
Symbol
fLO
PLO
fIF
fRF
TX EN, RX EN
VDD
Value
1.5 to 2.4
–10
70 to 350
1.7 to 2.5
2.7 to VDD
2.7 to 5
Unit
GHz
dBm
MHz
GHz
Vdc
Vdc
ELECTRICAL CHARACTERISTICS
(VDD = 3 V, TA = 25°C, LO = 1790 MHz @ –10 dBm, IF = 110 MHz @ –15 dBm,
TX EN = 3.0 V, RX EN = 0 V, unless otherwise noted)
Characteristic
IF to RF Conversion Gain
Min
8
—
—
—
—
—
—
—
Typ
10
–2
9
–19
–4
28
3
0.1
Max
—
—
—
—
—
50
—
0.3
Unit
dB
dBm
dBm
dBm
dBm
mA
mA
mA
LIFETIME BUY
RF Output 1 dB Compression
RF Output 3rd Order Intercept
LO Feed Through to RF Port
Auxiliary LO Output Power (TX EN = 0 V, RX EN = 3 Vdc)
Supply Current, TX Mode
Supply Current, RX Mode (TX EN = 0 V, RX EN = 3 Vdc)
Standby Mode Current (TX EN = 0 V, RX EN = 0 Vdc)
RX EN
LO IN
IF IN
TX EN
C1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
C2
C3
LO OUT
C1
C2
C3
RF OUT
470 pF
100 pF
0.1
µF
(optional)
VDD
Figure 1. Applications Circuit Configuration
MRFIC1803
2
MOTOROLA RF DEVICE DATA
LAST ORDER 19/12/99
LAST SHIP 18/06/00
Typical Characteristics
13
12
11
10
9
8
7
6
5
4
3
–15
–13
–11
–9
PLO, LO INPUT POWER (dBm)
3.3 Vdc
fRF = 1.9GHz
PIF = –20dBm
fIF = 110MHz
TA = 25°C
VDD = 3.0 Vdc
2.7 Vdc
12
–35°C
GC, CONVERSION GAIN (dB)
GC,CONVERSION GAIN (dB)
14
10
TA = 25°C
85°C
8
6
4
–15
fRF = 1.9 GHz
PIF = –20 dBm
fIF = 110 MHz
VDD = 3 Vdc
–13
–11
–9
PLO, LO INPUT POWER (dBm)
–7
–5
–7
–5
LIFETIME BUY
Figure 2. Conversion Gain versus LO Power
Figure 3. Conversion Gain versus LO Power
14
12
10
8
6
4
2
0
–2
–4
1.5
1.6
fIF = 110 MHz
PRF = –20 dBm
PLO = –10 dBm
VDD = 3 Vdc
TA = 25°C
85°C
–35°C
GC,CONVERSION GAIN (dB)
13
11
9
7
5
3
1
–1
–3
2
2.1
2.2
2.3
2.4
2.5
2.6
–5
1.5
1.6
1.7
fIF = 110 MHz
PIF = –20 dBm
PLO = –10 dBm
TA = 25°C
1.8
1.9
2
2.1
2.2
2.3
2.4
2.5
2.6
3.3 Vdc
2.7 Vdc
VDD = 3.0 Vdc
GC,CONVERSION GAIN (dB)
1.7
1.8
1.9
fRF, RF FREQUENCY (GHz)
fRF, RF FREQUENCY (GHz)
Figure 4. Conversion Gain versus RF Frequency
Figure 5. Conversion Gain versus RF Frequency
12
10
GC,CONVERSION GAIN (dB)
6
4
2
0
1.5
1.6
1.7
1.8
Figure 6. Conversion Gain versus RF Frequency
MOTOROLA RF DEVICE DATA
ÎÎÎ
ÎÎÎ
ÎÎÎÎ
ÎÎÎ
ÎÎÎÎ
ÎÎÎ
8
325 MHz
IF = 240 MHz
PIF = –20 dBm
PLO = –10 dBm
VDD = 3 Vdc
TA = 25°C
1.9
2
110 MHz
2.1
2.2
2.3
2.4
2.5
2.6
–15
fRF, RF FREQUENCY (GHz)
Figure 7. Output Power versus IF Input Power
ÎÎÎ
ÎÎÎ
ÎÎÎ
ÎÎÎ
ÎÎÎÎ
ÎÎÎÎ
5
4
3
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–20
VDD = 3 Vdc
2.7 Vdc
3.3 Vdc
fRF = 1.9 GHz
fIF = 110 MHz
PLO = –10 dBm
TA = 25°C
–10
–5
0
PIF, IF INPUT POWER (dBm)
MRFIC1803
3
LAST ORDER 19/12/99
PRF, RF OUTPUT POWER (dBm)
RF
LAST SHIP 18/06/00
Typical Characteristics
6
PRF, RF OUTPUT POWER (dBm)
RF
PRF, RF OUTPUT POWER (dBm)
RF
4
2
0
–2
–4
–6
–8
TA = 25°C
fIF = 110 MHz
fRF = 1.9 GHz
VDD = 3 Vdc
85°C
–35°C
6
2
0
–2
–4
–6
–8
IF = 110 MHz
240 MHz
325 MHz
–10
–12
–20
–15
–10
PIF, IF INPUT POWER (dBm)
–5
0
fRF = 1.9 GHz
VDD = 3 Vdc
TA = 25°C
–15
–10
PIF, IF INPUT POWER (dBm)
–5
0
–10
–20
LIFETIME BUY
Figure 8. RF Output Power versus IF Input Power
Figure 9. RF Output Power versus IF Input Power
4
2
0
–2
–4
–6
–8
–10
fRF = 2.45 GHz
VDD = 3 Vdc
TA = 25°C
–15
–10
PIF, IF INPUT POWER (dBm)
–5
0
IF = 110 MHz
240 MHz
325 MHz
LO–RF FEEDTHROUGH (dBm)
0
–5
–10
–15
–20
–25
–30
1
PRF = –20 dBm
PLO = –10 dBm
VDD = 3 Vdc
TA = 25°C
1.2
1.4
1.6
1.8
IF = 110 MHz
PRF, RF OUTPUT POWER (dBm)
RF
–12
–14
–16
–20
325 MHz
240 MHz
2
2.2
2.4
2.6
fLO, LO FREQUENCY (GHz)
Figure 10. RF Output Power versus IF Input Power
at 2.45 GHz
Figure 11. LO to RF Feedthrough versus
LO Frequency
MRFIC1803
4
MOTOROLA RF DEVICE DATA
LAST ORDER 19/12/99
LAST SHIP 18/06/00
4
Frequency (MHz)
1500
1550
1600
1650
1700
1750
1800
1850
1900
1950
2000
2050
RF Output
22.07 –j11.36
21.74 –j4.69
22.28 +j2.16
24.01 +j8.25
26.64 +J14.13
30.83 +j20.11
36.39 +j25.30
43.92 +j29.26
54.37 +j30.98
65.34 +j28.57
75.30 +j21.12
81.19 +j8.43
80.22 –j4.24
74.20 –j14.00
65.50 –j19.72
57.40 –j21.38
50.59 –j20.61
44.53 –j18.16
40.24 –j14.78
37.73 –j10.54
36.38 –j6.72
LO Input
41.98 +j22.31
50.60 +j9.80
41.93 –j0.07
32.74 +j3.32
28.78 +j11.39
28.98 +j21.04
32.13 +j30.26
37.68 +j40.38
48.31 +j54.15
68.80 +j70.87
118.18 +j86.46
220.83 +j17.19
148.91 –j120.77
58.50 –j105.11
27.23 –j71.51
17.22 –j50.26
13.00 –j35.19
10.95 –j22.96
10.23 –j13.58
10.20 –j5.32
10.62 +j2.90
LO Output
20.09 +j31.15
26.39 +j40.79
37.63 +j52.47
56.16 +j63.47
87.97 +j67.31
131.33 +j40.34
137.85 –j16.48
103.88 –j50.81
69.58 –j53.97
50.13 –j46.24
38.97 –j36.86
32.08 –j27.58
28.43 –j19.86
26.56 –j12.82
26.03 –j5.89
26.73 –j0.03
28.46 +j5.10
30.88 +j9.86
33.75 +j13.92
37.50 +j17.32
42.00 +j20.34
LIFETIME BUY
2100
2150
2200
2250
2300
2350
2400
2450
2500
DESIGN AND APPLICATIONS INFORMATION
The MRFIC1803 combines a single–balanced FET mix-
er with an LO pre–amp and an exciter amplifier to form a
self–contained upconverter. The device is usable from RF
frequencies of 1.7 to 2.5 GHz and at IF frequencies of 70
to 325 MHz. The design is optimized for low side injection
in hetrodyne transmitter applications. In the upconversion
process, modulation is imparted to an IF carrier which is
converted to the RF transmit frequency by a mixer. By DC
coupling the IF input, the device can be used for simple
on–off keying (OOK) or bi–phase shift keying (BPSK) ap-
plications with no IF.
The MRFIC1803 design minimizes the need for off–chip
components. An active balun is employed at the IF input
and provides an excellent broadband 50
W
match over the
full range of IF frequencies. The LO quadrature divider is
passive and internal to the device. The LO buffer amplifier
is equipped with a diversity switch which switches the am-
plified LO signal to the LO output pin during RECEIVE
mode. The –5 dBm LO output is the appropriate level to
drive the MRFIC1804 for 1.8 GHz applications or the
MRFIC2401 for 2.4 GHz applications.
As shown in Figure 1, the device is easy to use with
minimal off–chip components. More or less bypassing of
the control and supply lines may be required depending
on board layout and shielding. Careful layout of the RF
frequency portions of the board is critical to successful
implementation. Controlled impedance lines must be used
and any off–chip components must be mounted as close to
the IC as possible. The applications circuit was used to
gather the information displayed in the typical characteris-
tics curves. Since the MRFIC1803 design was optimized
for the 1.7 to 1.9 GHz frequency range, improved perfor-
mance can be had with some off–chip matching at fre-
quencies outside this range. In particular, matching of the
LO port will supply higher LO drive and improve conver-
sion gain. At the RF output, either better gain or better 1dB
compression can be had with external matching.
Filtering is generally required in the upconversion pro-
cess to reduce image and LO radiation. To minimize pin
count, this filtering is accomplished external to the device
at the exciter output. For the frequency ranges of applica-
tion, two and three pole ceramic surface filters are avail-
able at reasonable cost and with less than 2 dB of loss.
EVALUATION BOARDS
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 product, please con-
tact your local Motorola Distributor or Sales Office.
MOTOROLA RF DEVICE DATA
MRFIC1803
5
LAST ORDER 19/12/99
Table 1. Selected Device Impedances
LAST SHIP 18/06/00
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