MOTOROLA MRFIC2002

Order this document
by MRFIC2002/D
SEMICONDUCTOR TECHNICAL DATA
The MRFIC Line
The MRFIC2002 is a double-balanced, active mixer designed for transmitters
operating in the 800 MHz to 1.0 GHz frequency range. The design utilizes
Motorola’s advanced MOSAIC 3 silicon bipolar RF process to yield superior
performance in a cost effective monolithic device. Applications for the
MRFIC2002 include CT1 and CT2 cordless telephones, GSM, remote controls,
video and audio short range links, low cost cellular radios, and ISM band
transmitters. A power down control is provided to minimize current drain with
minimum recovery / turn-on time.
900 MHz TX-MIXER
SILICON MONOLITHIC
INTEGRATED CIRCUIT
• Conversion Gain = 10 dB (Typ)
• Supply Current = 5.5 mA (Typ)
• Power Down Supply Current = 2.0 µA (Max)
• LO-RF Isolation = 25 dB (Typ)
• Low LO Drive Required = –10 dBm (Typ)
• LO Impedance Insensitive to Power Down
• No Matching Required for RF OUT Port
• All Ports are Single Ended
• Order MRFIC2002R2 for Tape and Reel.
R2 Suffix = 2,500 Units per 12 mm, 13 inch Reel.
CASE 751-05
(SO-8)
• Device Marking = M2002
ABSOLUTE MAXIMUM RATINGS (TA = 25°C unless otherwise noted)
Rating
Supply Voltage
Control Voltages
Input Power, LO and IF Ports
Operating Ambient Temperature
Storage Temperature
Symbol
Value
Unit
VCC
5.5
Vdc
ENABLE, VRAMP
5.0
Vdc
PLO, PIF
+10
dBm
TA
– 35 to + 85
°C
Tstg
– 65 to +150
°C
IF IN 1
8
LO IN
VRAMP(1) 2
7
VCC
6
GND
5
RF OUT
GND 3
ENABLE 4
BIAS
CNTL
(1) For CT2 applications, apply ramp voltage provided in MRFIC2004. For non-CT2, leave open circuited.
Pin Connections and Functional Block Diagram
REV 2
RF DEVICE DATA
MOTOROLA
Motorola, Inc. 1997
MRFIC2002
1
RECOMMENDED OPERATING RANGES
Parameter
Symbol
Value
Unit
VCC
2.7 to 5.0
Vdc
ENABLE, VRAMP
0 to 5.0
Vdc
RF Port Frequency Range
fRF
500 to 1000
MHz
IF Port Frequency Range
fIF
0 (dc) to 250
MHz
Supply Voltage Range
Control Voltage Ranges
ELECTRICAL CHARACTERISTICS (VCC, Enable = 3.0 V and VRamp(1) Open Circuited, PLO = – 7.0 dBm, IF @ 100 MHz, LO @ 1.0
GHz, RF @ 900 MHz, TA = 25°C unless otherwise noted)
Characteristic (2)
Min
Typ
Max
Unit
Supply Current: On-Mode
Supply Current: Off-Mode (Enable < 1.0 V)
—
—
5.5
0.1
7.0
2.0
mA
µA
Enable Response Time
—
1.0
—
µs
Conversion Gain
8.0
10
12
dB
Single Sideband Noise Figure
—
10
—
dB
Output Power at 1.0 dB Gain Compression
—
–18
—
dBm
Output Power at Saturation
–16
–14
—
dBm
LO-RF Isolation (1.0 GHz)
—
25
—
dB
LO-IF Isolation (1.0 GHz)
—
65
—
dB
IF-RF Isolation (100 MHz)
—
18
—
dB
IF-LO Isolation (100 MHz)
—
50
—
dB
NOTES:
1. For CT2 applications, apply ramp voltage provided in MRFIC2004. For non-CT2, leave open circuited.
2. All Electrical Characteristics are measured in test circuit schematic as shown in Figure 1.
IF IN
50 Ω
C1
L1
L2
C2
8
2
7
C4
LO IN
50 Ω
L3
D.U.T.
VRAMP* +
–
ENABLE +
–
1
3
C5
C6
+
–
6
VCC
C7
C3
4
C1, C3, C6 — 1000 pF Chip Capacitor
C2 — 6.8 pF Chip Capacitor
C4 — 3.9 pF Chip Capacitor
C5 — 100 pF Chip Capacitor
C7 — 5.6 pF Chip Capacitor
L1 — 270 nH Chip Inductor
RF OUT
50 Ω
5
L2 — 10 nH Chip Inductor
L3 — 390 nH Chip Inductor
RF Connectors — SMA Type
Board Material — Glass/Epoxy εr = 4.5,
Dielectric Thickness = 0.014″ (0.36 mm)
Figure 1. Test Circuit
Configuration
MRFIC2002
2
MOTOROLA RF DEVICE DATA
G C , CONVERSION GAIN (dB)
13
12
TA = – 35°C
11
+ 25°C
10
+ 85°C
9
VCC = 3 V
fIF = 100 MHz
f = 0.5 GHz
0.9
8
500
600
ZRF
1.2
700
800
fRF, RF FREQUENCY (MHz)
900
1000
Figure 3. Gain versus RF Frequency
0
Zo = 50 Ω
ZIF
f = 0.5 GHz
0.1
f = 0.25 GHz
18
ZLO
G C , CONVERSION GAIN (dB)
VCC = 5 V
0.7
0.9
1.2
16
4V
14
12
3V
10
8
500
Figure 2. Port Impedances versus Frequency
TA = 25°C
fIF = 100 MHz
600
700
800
fRF, RF FREQUENCY (MHz)
900
1000
Figure 4. Gain versus RF Frequency
ΓIF
ΓRF
ΓLO
VCC
(Volts)
f
(MHz)
Mag
∠φ
Degrees
Mag
∠φ
Degrees
Mag
∠φ
Degrees
3.0
50
100
150
200
250
500
600
700
800
900
1000
1100
1200
0.83
0.82
0.82
0.81
0.81
—
—
—
—
—
—
—
—
– 2.4
– 4.7
– 7.1
– 9.6
–11.7
—
—
—
—
—
—
—
—
—
—
—
—
—
0.42
0.41
0.40
0.39
0.36
0.33
0.31
0.28
—
—
—
—
—
100
94
88
80
71
63
55
45
—
—
—
—
—
0.57
0.55
0.54
0.52
0.51
0.50
0.49
0.49
—
—
—
—
—
– 29
– 35
– 41
– 48
– 54
– 60
– 65
– 70
Table 1. Deembedded Port Reflection Coefficients
(Enable = 3.0 V, Zo = 50 Ω, TA = 25°C)
MOTOROLA RF DEVICE DATA
MRFIC2002
3
16
11
10
G C , CONVERSION GAIN (dB)
G C , CONVERSION GAIN (dB)
TA = – 35°C
25°C
85°C
9
VCC = 3 V
8
VCC = 5 V
14
4V
12
3V
10
TA = 25°C
7
–15
–12
–6
–9
PLO, LO INPUT POWER (dBm)
8
–15
0
–3
–12
Figure 5. Gain versus LO Input Power
0
–2
PRF , OUTPUT POWER (dBm)
PRF , OUTPUT POWER (dBm)
–3
Figure 6. Gain versus LO Input Power
–12
–14
–16
–9
–6
PLO, LO INPUT POWER (dBm)
VCC = 3 V
–18
85°C
– 26
4V
VCC = 5 V
–14
25°C
– 22
– 30
ā
–10
TA = – 35°C
– 20
–6
3V
–18
– 22
–18
PIF, IF INPUT POWER (dBm)
–14
TA = 25°C
– 22
– 30
ā
–10
Figure 7. Output Power versus IF Input Power
– 26
– 22
–18
PIF, IF INPUT POWER (dBm)
–14
–10
Figure 8. Output Power versus IF Input Power
–8
Po 1.0 dB , OUTPUT POWER (dBm)
ā
VCC = 5 V
–10
4V
–12
–14
TA = 25°C
–16
3V
–18
–15
–12
–9
–6
PLO, LO INPUT POWER (dBm)
ā
ā
–3
ā
0
Figure 9. Output Power at 1.0 dB Gain Compression
versus LO Input Power
MRFIC2002
4
MOTOROLA RF DEVICE DATA
8
12
ICC , SUPPLY CURRENT (mA)
ICC , SUPPLY CURRENT (mA)
14
10
8
TA = + 85°C
ā
25°C
– 35°C
ā
6
4
3
3.4
3.8
4.2
VCC, SUPPLY VOLTAGE (V)
4.6
5
Figure 10. ICC versus VCC
25°C
TA = 85°C
6
– 35°C
ā
4
VCC = 3 V
2
0
0
1
2
3
VEN, ENABLE VOLTAGE (V)
4
5
Figure 11. ICC versus Enable Voltage
APPLICATIONS INFORMATION
DESIGN PHILOSOPHY
The MRFIC2002 was designed to have excellent LO and
spurious rejection. This is accomplished by using a doublebalanced configuration and using a symmetrical die layout.
To eliminate the need for external baluns or decoupling
elements, the unused LO and IF ports are decoupled internally. Only one of the RF outputs is used, eliminating the
need for an external balun on the RF port as well. Also, the
RF port is buffered to provide a 50 ohm output impedance.
External matching is required for the LO and IF ports.
To minimize current drain in various TDD/TDMA systems,
two methods of enabling/disabling the MRFIC2002 are provided: one that is TTL/CMOS compatible and one that is triggered from a ramp, such as the one provided in the
MRFIC2004. The former method must be used if a ramp is
not available. The latter method is more desirable since the
MRFIC2002 can remain off during guard times and while in
idle mode.
THEORY OF OPERATION
Matching the LO port to 50 ohms can be done several
ways. The recommended approach is a series inductor as
close to the IC as possible. The inductor value is small
enough (~8 –15 nH depending on LO frequency) to be
printed on the board. A DC block is required and should not
be placed between the inductor and IC since this will prevent
the inductor from being placed close enough to the IC to provide a good match.
The IF port is approximately 500 ohms resistive in parallel
with 1.3 pF of capacitance. If 50 ohms is the desired IF port
impedance, a shunt capacitor followed by a series inductor
MOTOROLA RF DEVICE DATA
will provide the transformation. A DC block is required and
can be placed on either side of the matching network.
The RF port is nearly 50 ohms resistive in series with a
small amount of inductive reactance, which results in an
8 –11 dB return loss. However, a series 5.6 pF capacitor
placed as close to the IC as possible will typically provide
greater than a 15 dB return loss. The series capacitor also
serves as a DC block which is required.
Supply decoupling must be done as close to the IC as possible. A 1000 pF capacitor is recommended. An additional
100 pF capacitor and an RF choke are recommended to
keep the RF and LO signals off the supply line.
For systems that use a ramp, like the one provided in the
MRFIC2004, enabling/disabling can be done by applying the
ramp voltage to the VRAMP pin which trips the IC between
0.6 and 1.0 volts. The Enable pin must either be tied high or
to the inverse of the receiver enable control line, RXEN. An
inverter is provided in the MRFIC2004 to invert RXEN.
For systems that do not use a ramp, the VRAMP pin can
be left open circuited and enabling/disabling the MRFIC2002
can be done with its TTL/CMOS compatible Enable pin. The
trip point is between 1.0 and 2.0 volts.
EVALUATION BOARDS
Evaluation boards are available for RF Monolithic Integrated 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 contact your local Motorola Distributor or Sales Office.
MRFIC2002
5
PACKAGE DIMENSIONS
D
A
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME
Y14.5M, 1994.
2. DIMENSIONS ARE IN MILLIMETERS.
3. DIMENSION D AND E DO NOT INCLUDE MOLD
PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE.
5. DIMENSION B DOES NOT INCLUDE MOLD
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS
OF THE B DIMENSION AT MAXIMUM MATERIAL
CONDITION.
C
8
5
0.25
H
E
M
B
M
1
4
h
B
X 45 _
e
q
A
C
SEATING
PLANE
L
0.10
A1
B
0.25
M
C B
S
A
S
DIM
A
A1
B
C
D
E
e
H
h
L
q
MILLIMETERS
MIN
MAX
1.35
1.75
0.10
0.25
0.35
0.49
0.18
0.25
4.80
5.00
3.80
4.00
1.27 BSC
5.80
6.20
0.25
0.50
0.40
1.25
0_
7_
CASE 751–05
ISSUE S
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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, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
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MRFIC2002
6
◊
MRFIC2002/D
MOTOROLA RF DEVICE
DATA