19-5307; Rev 0; 6/10
Dual, SiGe, High-Linearity, 1200MHz to 1700MHz
Downconversion Mixer with LO Buffer/Switch
General Description
The MAX19993 dual-channel downconverter is designed
to provide 6.4dB of conversion gain, +27dBm input IP3,
15.4dBm 1dB input compression point, and a noise
figure of 9.8dB for 1200MHz to 1700MHz diversity
receiver applications. With an optimized LO frequency
range of 1000MHz to 1560MHz, this mixer is ideal
for low-side LO injection architectures. High-side LO
injection is supported by the MAX19993A, which is pin-
pin and functionally compatible with the MAX19993.
In addition to offering excellent linearity and noise
performance, the MAX19993 also yields a high level
of component integration. This device includes two
double-balanced passive mixer cores, two LO buffers, a
dual-input LO selectable switch, and a pair of differential
IF output amplifiers. Integrated on-chip baluns allow for
single-ended RF and LO inputs. The device requires a
nominal LO drive of 0dBm and a typical supply current of
337mA at V
CC
= +5.0V or 275mA at V
CC
= +3.3V.
The MAX19993 is pin compatible with the MAX9985/
MAX19985A/MAX9995/MAX19993A/MAX19994/
MAX19994A/MAX19995/MAX19995A series of 700MHz
to 2200MHz mixers and pin similar to the MAX19997A/
MAX19999 series of 1850MHz to 4000MHz mixers,
making this entire family of downconverters ideal for
applications where a common PCB layout is used across
multiple frequency bands.
The device is available in a 6mm x 6mm, 36-pin TQFN
package with an exposed pad. Electrical performance is
guaranteed over the extended temperature range, from
T
C
= -40NC to +85NC.
Features
S
1200MHz to 1700MHz RF Frequency Range
S
1000MHz to 1560MHz LO Frequency Range
S
50MHz to 500MHz IF Frequency Range
S
6.4dB Typical Conversion Gain
S
9.8dB Typical Noise Figure
S
+27dBm Typical Input IP3
S
15.4dBm Typical Input 1dB Compression Point
S
72dBc Typical 2RF - 2LO Spurious Rejection at
MAX19993
P
RF
= -10dBm
S
Dual Channels Ideal for Diversity Receiver
Applications
S
47dB Typical Channel-to-Channel Isolation
S
Low -6dBm to +3dBm LO Drive
S
Integrated LO Buffer
S
Internal RF and LO Baluns for Single-Ended
Inputs
S
Built-In SPDT LO Switch with 57dB LO-to-LO
Isolation and 50ns Switching Time
S
Pin Compatible with the MAX9985/MAX19985A/
MAX9995/MAX19993A/MAX19994/MAX19994A/
MAX19995/MAX19995A Series of 700MHz to
2200MHz Mixers
S
Pin Similar to the MAX19997A/MAX19999 Series
of 1850MHz to 4000MHz Mixers
S
Single +5V or +3.3V Supply
S
External Current-Setting Resistors Provide Option
Applications
WCDMA/LTE Base Stations
Wireless Local Loop
Fixed Broadband Wireless Access
Private Mobile Radios
Military Systems
for Operating Device in Reduced-Power/Reduced-
Performance Mode
Ordering Information
PART
MAX19993ETX+
MAX19993ETX+T
TEMP RANGE
PIN-PACKAGE
36 TQFN-EP*
-40NC to +85NC
36 TQFN-EP*
-40NC to +85NC
+Denotes
a lead(Pb)-free/RoHS-compliant package.
*EP
= Exposed pad.
T = Tape and reel.
_______________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Dual, SiGe, High-Linearity, 1200MHz to 1700MHz
Downconversion Mixer with LO Buffer/Switch
MAX19993
ABSOLUTE MAXIMUM RATINGS
V
CC
to GND..........................................................-0.3V to +5.5V
LO1, LO2 to GND..............................................................
Q0.3V
LOSEL to GND ......................................... -0.3V to (V
CC
+ 0.3V)
RFMAIN, RFDIV, and LO_ Input Power ........................ +15dBm
RFMAIN, RFDIV Current (RF is DC shorted to GND
through a balun) .............................................................50mA
TAPMAIN, TAPDIV to GND .....................................-0.3V to +2V
Any Other Pins to GND ............................ -0.3V to (V
CC
+ 0.3V)
Continuous Power Dissipation (Note 1) ..............................8.7W
B
JA (Notes 2, 3) ........................................................... +38NC/W
B
JC (Notes 1, 3) .............................................................7.4NC/W
Operating Temperature Range (Note 4) ... T
C
= -40NC to +85NC
Junction Temperature .....................................................+150NC
Storage Temperature Range............................ -65NC to +150NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
Note 1:
Based on junction temperature T
J
= T
C
+ (B
JC
x V
CC
x I
CC
). This formula can be used when the temperature of the
exposed pad is known while the device is soldered down to a PCB. See the
Applications Information
section for details.
The junction temperature must not exceed +150NC.
Note 2:
Junction temperature T
J
= T
A
+ (B
JA
x V
CC
x I
CC
). This formula can be used when the ambient temperature of the PCB is
known. The junction temperature must not exceed +150NC.
Note 3:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to
www.maxim-ic.com/thermal-tutorial.
Note 4:
T
C
is the temperature on the exposed pad of the package. TA is the ambient temperature of the device and PCB.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
5.0V SUPPLY DC ELECTRICAL CHARACTERISTICS
(Typical
Application Circuit,
V
CC
= 4.75V to 5.25V, no input AC signals. T
C
= -40NC to +85NC, R1 = R4 = 681I,
R2 = R5 = 1.82kI. Typical values are at V
CC
= 5.0V, T
C
= +25NC, unless otherwise noted. All parameters are production tested.)
PARAMETER
Supply Voltage
Supply Current
LOSEL Input High Voltage
LOSEL Input Low Voltage
LOSEL Input Current
SYMBOL
V
CC
I
CC
V
IH
V
IL
I
IH and
I
IL
-10
Total supply current
2
0.8
+10
CONDITIONS
MIN
4.75
TYP
5
337
MAX
5.25
400
UNITS
V
mA
V
V
FA
3.3V SUPPLY DC ELECTRICAL CHARACTERISTICS
(Typical
Application Circuit,
V
CC
= 3.0V to 3.6V, no input AC signals. T
C
= -40NC to +85NC, R1 = R4 = 681I, R2 = R5 = 1.43kI.
Typical values are at V
CC
= 3.3V, T
C
= +25NC, unless otherwise noted. Parameters are guaranteed by design and not production
tested.)
PARAMETER
Supply Voltage
Supply Current
LOSEL Input High Voltage
LOSEL Input Low Voltage
SYMBOL
V
CC
I
CC
V
IH
V
IL
CONDITIONS
Total supply current (Note 5)
MIN
3.0
TYP
3.3
275
2
0.8
MAX
3.6
UNITS
V
mA
V
V
2
Dual, SiGe, High-Linearity, 1200MHz to 1700MHz
Downconversion Mixer with LO Buffer/Switch
RECOMMENDED AC OPERATING CONDITIONS
PARAMETER
RF Frequency
LO Frequency
SYMBOL
f
RF
f
LO
(Note 6)
(Note 6)
Using Mini-Circuits TC4-1W-17 4:1 trans-
former as defined in the
Typical Application
Circuit,
IF matching components affect the
IF frequency range (Note 6)
IF Frequency
f
IF
Using Mini-Circuits TC4-1W-7A 4:1 trans-
former as defined in the
Typical Application
Circuit,
IF matching components affect the
IF frequency range (Note 6)
LO Drive Level
P
LO
(Note 6)
50
250
CONDITIONS
MIN
1200
1000
TYP
MAX
1700
1560
UNITS
MHz
MHz
MAX19993
100
500
MHz
-6
+3
dBm
5.0V SUPPLY, LOW-SIDE INJECTION AC ELECTRICAL CHARACTERISTICS
(Typical
Application Circuit
(see Table 1). R1 = R4 = 681I, R2 = R5 = 1.82kI, V
CC
= 4.75V to 5.25V, RF and LO ports are driven from
50I sources, P
LO
= -6dBm to +3dBm, P
RF
= -5dBm, f
RF
= 1200MHz to 1700MHz, f
LO
= 1060MHz to 1560MHz, f
IF
= 140MHz, f
RF
> f
LO
,
T
C
= -40NC to +85NC. Typical values are at V
CC
= +5.0V, P
RF
= -5dBm, P
LO
= 0dBm, f
RF
= 1450MHz, f
LO
= 1310MHz, f
IF
= 140MHz,
TC = +25NC. All parameters are guaranteed by design and characterization, unless otherwise noted.) (Note 7)
PARAMETER
Conversion Gain (Note 5)
Conversion Gain Flatness
Gain Variation Over Temperature
Input Compression Point
SYMBOL
G
C
DG
C
TC
CG
IP
1dB
T
C
= +25NC
T
C
= +25NC, f
RF
= 1427MHz to 1463MHz
f
RF
= 1427MHz to 1463MHz
T
C
= -40NC to +85NC
f
RF
= 1450MHz (Notes 5, 8)
f
RF1
- f
RF2
= 1MHz, P
RF
= -5dBm per tone
f
RF1
- f
RF2
= 1MHz, P
RF
= -5dBm per tone,
f
RF
= 1427MHz to 1463MHz, T
C
= +25NC
(Note 5)
f
RF1
- f
RF2
= 1MHz, P
RF
= -5dBm per tone,
f
RF
= 1427MHz to 1463MHz (Note 5)
Input Third-Order Intercept Point
Variation Over Temperature
TC
IIP3
f
RF1
- f
RF2
= 1MHz, P
RF
= -5dBm per tone,
T
C
= -40NC to +85NC
Single sideband, no blockers present
f
RF
= 1427MHz to 1463MHz, T
C
= +25NC,
P
LO
= 0dBm, single sideband, no blockers
present
f
RF
= 1427MHz to 1463MHz, P
LO
= 0dBm,
single sideband, no blockers present
12.9
24.0
24.8
CONDITIONS
MIN
4.5
5.1
5.2
TYP
6.4
6.4
6.4
Q0.03
-0.009
15.4
27.0
27.0
MAX
7.4
7.0
6.9
dB
dB/NC
dBm
dB
UNITS
Input Third-Order Intercept Point
IIP3
dBm
24.4
27.0
Q0.5
9.8
9.8
12.7
11.0
dBm
Noise Figure (Note 9)
NF
SSB
dB
9.8
12.0
3
Dual, SiGe, High-Linearity, 1200MHz to 1700MHz
Downconversion Mixer with LO Buffer/Switch
MAX19993
5.0V SUPPLY, LOW-SIDE INJECTION AC ELECTRICAL CHARACTERISTICS (continued)
(Typical
Application Circuit
(see Table 1). R1 = R4 = 681I, R2 = R5 = 1.82kI, V
CC
= 4.75V to 5.25V, RF and LO ports are driven from
50I sources, P
LO
= -6dBm to +3dBm, P
RF
= -5dBm, f
RF
= 1200MHz to 1700MHz, f
LO
= 1060MHz to 1560MHz, f
IF
= 140MHz, f
RF
> f
LO
,
T
C
= -40NC to +85NC. Typical values are at V
CC
= +5.0V, P
RF
= -5dBm, P
LO
= 0dBm, f
RF
= 1450MHz, f
LO
= 1310MHz, f
IF
= 140MHz,
TC = +25NC. All parameters are guaranteed by design and characterization, unless otherwise noted.) (Note 7)
PARAMETER
Noise Figure Temperature
Coefficient
SYMBOL
TC
NF
CONDITIONS
Single sideband, no blockers present,
T
C
= -40NC to +85NC
P
BLOCKER
= +8dBm, f
RF
= 1450MHz,
f
LO
= 1310MHz, f
BLOCKER
= 1550MHz,
P
LO
= 0dBm, V
CC
= 5.0V, T
C
= +25NC
(Notes 9, 10)
f
RF
= 1450MHz,
f
LO
= 1310MHz,
f
SPUR
= 1380MHz
2RF - 2LO Spur Rejection
(Note 9)
2x2
f
RF
= 1450MHz,
f
LO
= 1310MHz,
f
SPUR
= 1380MHz,
P
LO
= 0dBm,
V
CC
= 5.0V,
T
C
= +25NC
f
RF
= 1450MHz,
f
LO
= 1310MHz,
f
SPUR
= 1356.67MHz
3RF - 3LO Spur Rejection
(Note 9)
3x3
f
RF
= 1450MHz,
f
LO
= 1310MHz,
f
SPUR
= 1356.67MHz,
P
LO
= 0dBm,
V
CC
= 5.0V,
T
C
= +25NC
P
RF
= -10dBm
P
RF
= -5dBm
P
RF
= -10dBm
58
53
61
MIN
TYP
0.016
MAX
UNITS
dB/NC
Noise Figure with Blocker
NF
B
21.0
22.8
dB
72
67
72
dBc
dBc
P
RF
= -5dBm
P
RF
= -10dBm
P
RF
= -5dBm
P
RF
= -10dBm
56
77
67
82
67
93
83
93
dBc
P
RF
= -5dBm
72
83
21
24
dB
27
200
I
dB
dBc
RF Input Return Loss
LO and IF terminated into matched
impedance, LO on
LO port selected, RF and IF terminated into
matched impedance
LO port unselected, RF and IF terminated
into matched impedance
Z
IF
Nominal differential impedance of the IF
outputs
RF terminated into 50I, LO driven by
50I source, IF transformed to 50I using
external components shown in the
Typical
Application Circuit
(Note 5)
LO Input Return Loss
IF Output Impedance
IF Output Return Loss
15
dB
RF-to-IF Isolation
LO Leakage at RF Port
2LO Leakage at RF Port
33
-38
-27
dB
dBm
dBm
4
Dual, SiGe, High-Linearity, 1200MHz to 1700MHz
Downconversion Mixer with LO Buffer/Switch
5.0V SUPPLY, LOW-SIDE INJECTION AC ELECTRICAL CHARACTERISTICS (continued)
(Typical
Application Circuit
(see Table 1). R1 = R4 = 681I, R2 = R5 = 1.82kI, V
CC
= 4.75V to 5.25V, RF and LO ports are driven from
50I sources, P
LO
= -6dBm to +3dBm, P
RF
= -5dBm, f
RF
= 1200MHz to 1700MHz, f
LO
= 1060MHz to 1560MHz, f
IF
= 140MHz, f
RF
> f
LO
,
T
C
= -40NC to +85NC. Typical values are at V
CC
= +5.0V, P
RF
= -5dBm, P
LO
= 0dBm, f
RF
= 1450MHz, f
LO
= 1310MHz, f
IF
= 140MHz,
TC = +25NC. All parameters are guaranteed by design and characterization, unless otherwise noted.) (Note 7)
PARAMETER
LO Leakage at IF Port
SYMBOL
(Note 5)
RFMAIN converted power measured at
IFDIV relative to IFMAIN, all unused ports
terminated to 50I
RFDIV converted power measured at
IFMAIN relative to IFDIV, all unused ports
terminated to 50I
P
LO1
= +3dBm, P
LO2
= +3dBm,
f
LO1
= 1310MHz, f
LO2
= 1311MHz (Note 5)
50% of LOSEL to IF settled within 2 degrees
43
CONDITIONS
MIN
TYP
-18
47
dB
43
47
MAX
UNITS
dBm
MAX19993
Channel Isolation (Note 5)
LO-to-LO Isolation
LO Switching Time
47
57
50
dB
ns
3.3V SUPPLY, LOW SIDE INJECTION AC ELECTRICAL CHARACTERISTICS
(Typical
Application Circuit
(see Table 1). R1 = R4 = 681I, R2 = R5 = 1.43kI. Typical values are at V
CC
= 3.3V, P
RF
= -5dBm, P
LO
= 0dBm,
f
RF
= 1450MHz, f
LO
= 1310MHz, f
IF
= 140MHz, T
C
= +25NC, unless otherwise noted.) (Note 7)
PARAMETER
Conversion Gain
Conversion Gain Flatness
Gain Variation Over Temperature
Input Compression Point
Input Third-Order Intercept Point
Input Third-Order Intercept Point
Variation Over Temperature
Noise Figure
Noise Figure Temperature
Coefficient
2RF - 2LO Spur Rejection
3RF - 3LO Spur Rejection
RF Input Return Loss
SYMBOL
G
C
DG
C
TC
CG
IP
1dB
IIP3
TC
IIP3
NF
SSB
TC
NF
2x2
3x3
(Note 5)
f
RF
= 1427MHz to 1463MHz
T
C
= -40NC to +85NC
(Note 8)
f
RF1
- f
RF2
= 1MHz
f
RF1
- f
RF2
= 1MHz, P
RF
= -5dBm per tone,
T
C
= -40NC to +85NC
Single sideband, no blockers present
Single sideband, no blockers present,
T
C
= -40NC to +85NC
P
RF
= -10dBm
P
RF
= -5dBm
P
RF
= -10dBm
P
RF
= -5dBm
LO and IF terminated into matched
impedance, LO on
LO port selected, RF and IF terminated into
matched impedance
LO port unselected, RF and IF terminated
into matched impedance
CONDITIONS
MIN
TYP
6.2
Q0.05
-0.009
12.8
24.4
Q0.8
9.8
0.016
73
68
80
70
21
24
dB
27
MAX
UNITS
dB
dB
dB/NC
dBm
dBm
dBm
dB
dB/NC
dBc
dBc
dB
LO Input Return Loss
5
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