Page 1
SEMICONDUCTOR TECHNICAL DATA
The MRFIC Line
The MRFIC2101 is a high linearity transmit mixer and exciter designed
primarily for Digital Cellular radio systems. The mixer is double-balanced for
excellent LO and spurious rejection. An on-board LO buffer is provided to
reduce LO power requirements and eliminate the need for an external LO
balun. A power down control is provided to minimize current drain with minimum
recovery/turn-on time. The design utilizes Motorola’s advanced MOSAIC 3
silicon bipolar RF process to yield superior performance in a cost effective
monolithic device.
• High Linearity IP
• Low LO Drive Required = –15 dBm (Typ)
• Externally Adjustable Exciter Bias Current
• Power Down Supply Current = 2.0 µA (Typ)
• SO-16 Narrow Body Plastic Package
• Order MRFIC2101R2 for Tape and Reel.
R2 suffix = 2,500 Units per 16 mm, 13 inch Reel.
• Device Marking = M2101
3
= 23 dBm (Typ)
0
Order this document
by MRFIC2101/D
900 MHz
TX-MIXER/EXCITER
SILICON MONOLITHIC
INTEGRATED CIRCUIT
CASE 751B-05
(SO-16)
ABSOLUTE MAXIMUM RATINGS
(TA = 25°C unless otherwise noted)
Ratings Symbol Value Unit
Supply Voltage EX VCC, MX VCC, EX BIAS 5 Vdc
Enable Voltages MX EN, EX EN 6 Vdc
Input Power, LO and IF Ports PLO, P
Operating Ambient Temperature T
Storage Temperature T
RF Output Power (EX VCC < 4 V) P
RF Output Power (4 V< EX VCC ≤ 5 V) P
+
1IF IN
GND
2
LO IN
3
MX V
EX VCC/EX OUT
CC
GND
4
5
6
A
stg
out
out
IF
–
IF IN
16
MX EN
15
RF OUT+/MX V
14
RF OUT–/MX V
13
GND
12
EX IN
11
+10 dBm
– 35 to + 85 °C
– 65 to +150 °C
18 dBm
38 – 5 EX V
CC
CC
CC
dBm
REV 3
Motorola, Inc. 1997
GND
7
EX EN
8
Pin Connections and Functional Block Diagram
10
9
GND
EX BIAS
MRFIC2101MOTOROLA RF DEVICE DATA
1
Page 2
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply Voltages EX VCC, MX VCC, EX BIAS 4.75 Vdc
Enable Voltages MX EN, EX EN 0, 4.75 Vdc
RF Port Frequency Range RF 800 to 1000 MHz
IF Port Frequency Range IF 0 to 250 MHz
Symbol Value Unit
LOGIC LEVELS (T
High MX VCC –0.8, EX VCC –0.8 — Volts
Low — 0.8 Volts
MIXER ELECTRICAL CHARACTERISTICS (MX V
PLO = –15 dBm unless otherwise noted)
Conversion Gain (Small Signal) 24 26.5 29 dB
Output Power at 1 dB Gain Compression 2.5 4.5 — dBm
Output Third Order Intercept Point (– 5 dBm out/tone) — 14 — dBm
Output Fifth Order Intercept Point (– 5 dBm out/tone) — 11 — dBm
LO Leakage — –30 — dBm
Supply Current (Enabled) — 45 54 mA
Supply Current (Disabled) — 1 — µA
Noise Figure (Single Sideband) — 5 — dB
EXCITER ELECTRICAL CHARACTERISTICS (EX V
otherwise noted)
Gain (Small Signal) 14 16 18 dB
Output Power at 1 dB Gain Compression 16 18 — dBm
Output Third Order Intercept Point (+ 3 dBm out/tone) — 30 — dBm
Output Fifth Order Intercept Point (+ 3 dBm out/tone) — 22 — dBm
LO Leakage (PLO = –15 dBm into Mixer) — –30 — dBm
Supply Current (Enabled) — 38 46 mA
Supply Current (Disabled) — 1 — µA
Noise Figure — 5 — dB
(1) All electrical characteristics are measured in test circuit schematic as shown in Figure 1.
= 25°C)
A
Input Voltage (MX EN, EX EN)
Characteristic
Characteristic
(1)
(1)
Min Max Unit
, MX EN = 4.75 V, TA = 25°C, RF @ 900 MHz, LO @ 800 MHz, IF @ 100 MHz,
CC
Min Typ Max Unit
, EX EN, EX BIAS = 4.75 V, TA = 25°C, RF @ 900 MHz unless
CC
Min Typ Max Unit
MRFIC2101
2
MOTOROLA RF DEVICE DATA
Page 3
RF OUT
C14
C13
C12
λ
/8
MX EN
MX V
CC
λ
/8
–
+
C16
L4
–
+
C11
C10
EX IN
C9
C1
CC
L5
L1
+
–
C15
IF IN
LO IN
MX V
C1, C2, C3, 1000 pF, Chip Capacitor
C4 100 pF, Chip Capacitor
C5, C6, C7 1000 pF, Chip Capacitor
C8, C10, C11 1000 pF, Chip Capacitor
C9, C12 5.6 pF, Chip Capacitor
C13, C16 2.7 pF, Chip Capacitor
C14, C15 1000 pF, Chip Capacitor
L2
C2
C3 C4
910111213141516
DUT
87654321
C7
C5
L3
C6
L1, L5 82 nH, Chip Inductor
L2 15 nH, Chip Inductor
L3 8.2 nH, Chip Inductor
L4 12 nH, Chip Inductor
RF Connectors SMA Type
Board Material 0.031″ Thick FR4, 0.5 oz. Copper,
εr = 4.45, Coplanar Waveguide
C8
+
EX EN
–
+
EX V
–
+
EX BIAS
–
CC
EX OUT
Figure 1. T est Circuit Configuration
MRFIC2101MOTOROLA RF DEVICE DATA
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Page 4
T able 1. Mixer Deembedded Port Reflection Coefficients
f
∠φ
∠φ
∠φ
f
(ZO = 50 Ω, TA = 25°C)
Γ
IF
f
(MHz)
50 0.68 – 9.4 — — — —
100 0.68 –18 — — — —
150 0.67 –26 — — — —
200 0.66 –33 — — — —
250 0.65 –40 — — — —
500 — — 0.93 –28 0.79 –30
600 — — 0.92 –33 0.79 –32
700 — — 0.91 –37 0.79 –33
800 — — 0.89 –41 0.77 –34
900 — — 0.87 –45 0.75 –34
1000 — — 0.85 –48 0.73 –35
1100 — — 0.82 –50 0.69 –36
1200 — — 0.79 –53 0.65 –37
1300 — — 0.75 –56 0.61 –41
1400 — — 0.71 –61 0.56 –47
1500 — — 0.66 –66 0.52 –55
Mag
∠φ
Degrees
Mag
Γ
RF
∠φ
Degrees
Mag
Γ
LO
∠φ
Degrees
T able 2. Exciter Small Signal Deembedded S Parameters
(ZO = 50 Ω, TA = 25°C)
S
f
(MHz)
100 0.51 –121 35.51 131 0.02 50 0.65 –67
200 0.62 –149 22.61 109 0.03 42 0.49 –103
300 0.65 –162 16.05 96 0.03 41 0.43 –122
400 0.65 –170 12.16 87 0.04 41 0.40 –134
500 0.63 –177 9.75 81 0.04 42 0.38 –141
600 0.61 176 8.18 75 0.05 41 0.37 –146
700 0.59 169 7.06 70 0.05 40 0.36 –149
800 0.58 161 6.18 65 0.06 38 0.35 –153
900 0.58 154 5.44 60 0.07 33 0.35 –156
1000 0.59 145 4.91 55 0.07 30 0.35 –163
1100 0.61 139 4.39 51 0.08 27 0.35 –170
1200 0.65 134 3.94 47 0.08 22 0.35 –177
1300 0.67 131 3.56 43 0.08 20 0.37 174
1400 0.69 129 3.22 39 0.09 16 0.40 166
1500 0.71 127 2.92 36 0.09 13 0.43 160
|S11| ∠φ |S21| ∠φ |S12| ∠φ |S22| ∠φ
11
S
21
S
12
S
22
MRFIC2101
MOTOROLA RF DEVICE DATA
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Page 5
TYPICAL CHARACTERISTICS
30
28
26
, CONVERSION GAIN (dB)
C
G
24
–17
–13
PLO, LO INPUT POWER (dBm)
Figure 2. Mixer Gain versus LO Input Power
7
5
, OUTPUT POWER (dBm)
3
out 1 dB
P
1
–17
–13 –9 –5
PLO, LO INPUT POWER (dBm)
TA = – 35°C
25°C
85°C
TA = – 35°C
25°C
85°C
MX VCC = 4.75 V
–9 –5
MX VCC = 4.75 V
28
MX VCC = 4.75 V
4 V
26
24
, CONVERSION GAIN (dB)
C
G
22
–17 –9 –5–13
PLO, LO INPUT POWER (dBm)
3 V
TA = 25°C
Figure 3. Mixer Gain versus LO Input Power
6
MX VCC = 4.75 V
4
4 V
2
, OUTPUT POWER (dBm)
0
out 1 dB
P
–2
–17 –13 – 9 –5
PLO, LO INPUT POWER (dBm)
3 V
TA = 25°C
Figure 4. Mixer Output Power at 1 dB Gain
10
6
2
, OUTPUT POWER (dBm)
RF
–2
P
–6
– 30 – 20 –15 –10–25
Compression versus LO Input Power
TA = – 35°C
85°C
PIF, IF INPUT POWER (dBm)
25
°
C
MX VCC = 4.75 V
Figure 6. Mixer Output Power versus
IF Input Power
Figure 5. Mixer Output Power at 1 dB Gain
Compression versus LO Input Power
8
4
0
, OUTPUT POWER (dBm)
RF
–4
P
–8
–30
MX VCC = 4.75 V
4 V
3 V
TA = 25°C
–25
PIF, IF INPUT POWER (dBm)
– 20 –15 –10
Figure 7. Mixer Output Power versus
IF Input Power
MRFIC2101MOTOROLA RF DEVICE DATA
5
Page 6
TYPICAL CHARACTERISTICS
–10
–20
–30
–40
ORDER IMD (dBc)
rd
3
–50
–60
–15
Figure 8. Mixer 3
20
16
EX VCC = 4.75 V
MX VCC = 3 V
4 V
4.75 V
TA = 25°C
–10
P
, OUTPUT POWER (dBm)
out
rd
Order Intermodulation
–5 0
Distortion versus Output Power
3 V
4 V
–10
–20
–30
–40
ORDER IMD (dBc)
rd
3
–50
–60
–15 – 5 0–10
Figure 9. Mixer 3rd Order Intermodulation
20
16
TA = 85°C
–35°C
MX VCC = 4.75 V
P
, OUTPUT POWER (dBm)
out
Distortion versus Output Power
TA = – 35°C
85°C
25°C
25°C
12
, OUTPUT POWER (dBm)
8
out
P
4
–10
TA = 25°C
–5 0 10
Pin, INPUT POWER (dBm) Pin, INPUT POWER (dBm)
5
Figure 10. Exciter Output Power
12
, OUTPUT POWER (dBm)
8
out
P
4
–10 – 5 0 105
Figure 11. Exciter Output Power
versus Input Power
–20
–30
EX VCC = 3 V
–40
–50
ORDER IMD (dBc)
rd
3
–60
–70
0510
P
, OUTPUT POWER (dBm)
out
Figure 12. Exciter 3
4 V
4.75 V
TA = 25°C
rd
Order Intermodulation
Distortion versus Output Power
–20
–30
–40
–50
ORDER IMD (dBc)
rd
3
–60
–70
0
Figure 13. Exciter 3rd Order Intermodulation
Distortion versus Output Power
versus Input Power
TA = 85°C
25°C
510
P
, OUTPUT POWER (dBm)
out
EX VCC = 4.75 V
–35°C
EX VCC = 4.75 V
MRFIC2101
6
MOTOROLA RF DEVICE DATA
Page 7
50
TYPICAL CHARACTERISTICS
50
(MX EN = EX EN = EX BIAS = EX VCC = MX VCC)
45
40
, SUPPLY CURRENT (mA)
CC
35
I
30
–35
40
Mixer
Mixer
30
Exciter
, SUPPLY CURRENT (mA)
20
CC
I
Exciter
TA, Temperature (
EX VCC, MX VCC = 4.75 V
°
C)
10
8525
3 4.754
VCC, Supply Voltage (Volts)
Figure 14. ICC versus T emperature Figure 15. ICC versus V
TA = 25°C
CC
MRFIC2101MOTOROLA RF DEVICE DATA
7
Page 8
APPLICATIONS INFORMATION
DESIGN PHILOSOPHY
The MRFIC2101 was designed as a linear upconverter for
U.S. and Japan digital cellular radios. However, it is versatile
enough to be used in other applications such as analog
cellular, GSM, CDMA and the 900 MHz ISM band.
The mixer is double-balanced to minimize spurious and LO
emission. An external balun is required on the mixer RF output
to maximize linearity and maintain good balance. An
inexpensive and easy to implement balun is described below
in the theory of operation. The IF and LO ports do not require
baluns. The LO split is achieved on-chip with a buffer amplifier
which also reduces the LO power requirement. The IF port
can be driven differentially or single-ended with a decoupling
capacitor on the unused IF input. Baseband signals can be
applied directly to the IF inputs and the device becomes a
complete low–power transmitter.
To maximize efficiency in various systems, the exciter bias
current is externally adjustable. The bias current can also be
ramped to reduce spectral splatter.
To minimize current drain in TDD/TDMA systems, the
MRFIC2101 has separate TTL/CMOS compatible enable pins
for the mixer and the exciter.
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 and distance from
the IC) to be printed on the board. A DC block is required
and should not be placed between the inductor and IC since
the added electrical length will cause a poor match.
The IF ports are approximately 250 ohms resistive in
parallel with 5.0 pF of capacitance. Matching directly into this
impedance is not recommended. Series 82 nH chip inductors
should first be placed as close to both IF ports as possible.
This presents a high impedance to the IF ports at the LO
frequency which substantially reduces the LO leakage out
of the RF port. The resulting impedance then may be
matched to the desired characteristic impedance. DC
blocking capacitors are also required.
Both RF ports are approximately 25 ohms resistive in
series with 1.5 pF of capacitance (or the parallel equivalent,
380 ohms in parallel with 1.9 pF). Best linearity is achieved
by loading each port with 100 ohms resistive and resonating
the 1.9 pF. Ideally, a half wavelength transmission line could
be used to combine the two differential RF ports into one;
however, the size of such a line would be very large. Any
number of balun type network can be employed so long as
the network presents 100 ohms to each port, resonates 1.9
pF capacitance at each port, and exhibits 180 degree phase
difference between the two ports. The network shown in
Figure 1 combines very well without a lot of added board
space or complexity. Essentially, a quarter wavelength of
transmission line (~1.5 inches of 50 ohms stripline in FR4)
is used with additional phase shift coming from capacitors
C12, C13 and C16. This network will operate anywhere from
800–1000 MHz by adjusting bias inductor L4 and C16 only.
The exciter input requires external matching and a DC
block. It is best matched to 50 ohms using a short 50 ohms
transmission line followed by a 5–10 pF shunt capacitor. The
exciter output is approximately 50 ohms resistive in parallel
with 4 pF of capacitance in the 800–1000 MHz range. It is
best matched to 50 ohms using a 6–10 nH bias inductor
placed as close to the IC as possible. The exciter is
conditionally stable. Placing a 100-300 ohm resistor in
parallel with the bias inductor, when driving large VSWR
loads, may be needed to keep the exciter stable.
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 LO signal off the supply line.
Enabling/Disabling the MRFIC2101 can be done with the
separate TTL/CMOS compatible enable pins for the mixer
and exciter. The trip point is between 1 and 2 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 con tact your local Motorola Distributor or Sales Office.
MRFIC2101
8
MOTOROLA RF DEVICE DATA
Page 9
P ACKAGE DIMENSIONS
–T–
–A–
16 9
–B–
18
8 PLP
0.25 (0.010) B
G
K
C
SEATING
PLANE
D
16 PL
0.25 (0.010) A
M
S
B
T
M
S
CASE 751B–05
M
R
X 45
ISSUE J
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.
S
_
F
J
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.
DIM MIN MAX MIN MAX
A 9.80 10.00 0.386 0.393
B 3.80 4.00 0.150 0.157
C 1.35 1.75 0.054 0.068
D 0.35 0.49 0.014 0.019
F 0.40 1.25 0.016 0.049
G 1.27 BSC 0.050 BSC
J 0.19 0.25 0.008 0.009
K 0.10 0.25 0.004 0.009
M 0 7 0 7
____
P 5.80 6.20 0.229 0.244
R 0.25 0.50 0.010 0.019
INCHESMILLIMETERS
MRFIC2101MOTOROLA RF DEVICE DATA
9
Page 10
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty , representation or guarantee regarding
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. “T ypical” 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”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
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applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
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Opportunity/Affirmative Action Employer.
How to reach us:
USA/EUROPE/ Locations Not Listed: Motorola Literature Distribution; JAP AN: Nippon Motorola Ltd.: SPD, Strategic Planning Office, 4–32–1,
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MRFIC2101
10
◊
MOTOROLA RF DEVICE DATA
MRFIC2101/D
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