Upconverting Mixer with Image Filtering, Threshold
Alarm Circuit, and Error Amplifier for Level Control
General Description
The MAX2091 monolithic SiGe BiCMOS upconverter IC
integrates an analog variable-gain amplifier (VGA) with
an upconverting mixer stage and image filter. The device
amplifies IF signals in the 250MHz to 450MHz range
before mixing them with an LO signal. The resulting
1735MHz to 1935MHz upconverted signal is then filtered
on-chip as the final stage of signal conditioning. For a
broadband variant that does not include the image filter,
refer to the MAX2091B.
The analog attenuator is controlled by an external analog
control voltage. Device features include 23dB gain (no
attenuation), 5.4dB NF (no attenuation, including attenu-
ator insertion loss), and +24.5dBm OIP3. Each of these
features makes the MAX2091 an ideal upconverter for
numerous transmitter applications. When paired with the
MAX2092 RF VGA, a complete 2-chip IF-RF signal con-
ditioning solution is possible for microwave point-to-point
transmitter applications.
The MAX2091 operates from a single 5V supply, and is
available in a compact 20-pin TQFN package (5mm x
5mm) with an exposed pad. Electrical performance is
guaranteed over the extended temperature range from
T
C
= -40NC to +95NC.
S
Complete Upconversion in a Single IC
50MHz to 500MHz Analog VGA
1735MHz to 1935MHz Upconverter Mixer
On-Chip LO Buffer
Image Filter
S
High Linearity
+24.5dBm OIP3
+12dBm Output -1dB Compression Point
S
23dB Gain
S
37dB IF Attenuator Control Range
S
5.4dB Noise Figure (Includes Attenuator
Insertion Loss)
S
0.25dB Gain Variation Over 100MHz Bandwidth
S
Analog Attenuator Controlled with External
Voltage
S
Alarm Circuit with Adjustable Threshold
S
20dB Image Rejection at 1135MHz RF Frequency
S
Single +5V Supply with Extended +4.75V to +5.8V
Supply Range
S
Lead(Pb)-Free Package
S
Power-Down Capabilities
MAX2091
Benefits and Features
Applications
Microwave Point-to-Point Transmitters
IF Variable-Gain Stages
Temperature Compensation Circuits
Cellular Applications
WiMAX
®
Applications
LTE Applications
Fixed Broadband Wireless Access
Wireless Local Loop
Ordering Information
appears at end of data sheet.
For related parts and recommended products to use with this part,
refer to
www.maximintegrated.com/MAX2091.related.
WiMAX is a registered certification mark and registered service mark of WiMAX Forum.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-6188; Rev 1; 5/15
ABSOLUTE MAXIMUM RATINGS
50MHz to 500MHz Analog VGA, 1735MHz to 1935MHz
Upconverting Mixer with Image Filtering, Threshold
Alarm Circuit, and Error Amplifier for Level Control
Operating Case Temperature
Range (Note 2) ............................................... -40NC to +95NC
Maximum Junction Temperature....................................... 150NC
Storage Temperature Range............................ -65NC to +150NC
Lead Temperature (soldering 10s) ................................... 300NC
Soldering Temperature (reflow) ......................................+260NC
MAX2091
V
CC_A
, V
CC_IF
, V
CC_LO
, V
CC_RF
............................-0.3V to +6V
IF_IN, MIX_IN, IF_OUT, LO+, RF_OUT .......-0.3V to V
CC
+ 0.3V
ALM, R_BIAS, DET_VIN, AMP_OUT, LO- ............-0.3V to +3.6V
ALM_THRES, PLVLSET,
CTRL1, CTRL2..........-0.3V to MINIMUM (V
CC
+ 0.3V, +3.6V)
IF_IN, MIX_IN Input Power ........................................... +15dBm
Continuous Power Dissipation (Note 1) ..............................2.5W
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion 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.
PACKAGE THERMAL CHARACTERISTICS
QSOP
Junction-to-Ambient Thermal Resistance (q
JA
) .... +103.7°C/W
Junction-to-Case Thermal Resistance (q
JC
) .............. +37°C/W
QSOP-EP
Junction-to-Ambient Thermal Resistance (q
JA
) ......... +44°C/W
Junction-to-Case Thermal Resistance (q
JC
) ................ +6°C/W
Note 1:
Based on junction temperature T
J
= T
C
+ (θ
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 +150°C.
Note 2:
T
C
is the temperature on the exposed pad of the package. T
A
is the ambient temperature of the device and PCB.
Note 3:
Junction temperature T
J
= T
A
+ (θJA 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 +150
NC
.
Note 4:
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.maximintegrated.com/thermal-tutorial.
DC ELECTRICAL CHARACTERISTICS
(Typical
Application Circuit,
V
CC
= 4.75V to 5.8V, V
GND
= 0V, P
LO
= -10dBm to -4dBm, and T
C
= -40°C to +95°C. Typical values are
at V
CC
= 5.5V, P
LO
= -7dBm, and T
C
= +25°C, unless otherwise noted.) (Note 5)
PARAMETER
Supply Voltage
Total Supply Current
CTRL1/CTRL2 Logic-Low Input Voltage
CTRL1/CTRL2 Logic-High Input Voltage
CTRL1/CTRL2 Input Logic Current
PLVLSET Input Resistance
PLVLSET Input Voltage Range
PLVLSET Minimum Control Voltage
PLVLSET Maximum Control Voltage
DET_IN Input Voltage Range
ALM_THRES Input Resistance
Alarm Output Logic 1
Alarm Output Logic 0
DET_VIN Input Resistance
Maxim Integrated
SYMBOL
V
CC
CONDITIONS
CTRL1 = 1, CTRL2 = 1
MIN
4.75
TYP
5.5
264
254
8.5
MAX
5.8
290
UNITS
V
mA
I
DC
V
IL
V
IH
I
IH
/I
IL
R
IN
CTRL1 = 1, CTRL2 = 0
CTRL1 = 0, CTRL2 = 0
2.2
-10
650
0
0
2.3
15
0.8
10
2.5
V
V
FA
kI
V
V
V
V
kI
3.465
0.4
295
V
V
kI
2
0.1
2.4
135
3.3
235
0.2
2.5
2.5
V
IN
0
90
3.135
175
50MHz to 500MHz Analog VGA, 1735MHz to 1935MHz
Upconverting Mixer with Image Filtering, Threshold
Alarm Circuit, and Error Amplifier for Level Control
RECOMMENDED AC OPERATING CONDITIONS
PARAMETER
RF Frequency
LO Frequency
IF_IN Frequency
MIX_IN Frequency
LO Power
SYMBOL
f
RF
f
LO
f
IF_IN
f
MIX_IN
P
LO
(Note 6)
(Note 6)
(Note 6)
(Note 6)
CONDITIONS
MIN
1685
1185
50
100
-10
1485
TYP
MAX
1985
2485
500
500
-4
UNIT
MHz
MHz
MHz
MHz
dBm
MAX2091
AC ELECTRICAL CHARACTERISTICS
(Typical
Application Circuit
with analog attenuator set to maximum gain, V
CC
= 4.75V to 5.8V, f
RF
= 1835MHz, f
LO
= 1485MHz,
f
IF
= 350MHz, f
RF
= f
LO
+ f
IF
, P
LO
= -10dBm to -4dBm, T
C
= -40°C to +95°C, and IF_IN, LO+, and RF_OUT ports are connected
to 50ω sources and loads, unless otherwise noted. Typical values are at T
C
= +25°C, V
CC
= 5.5V, P
LO
= -7dBm, P
IF
= -25dBm,
V
PLVLSET
= 2.5V, CTRL1 = logic 1, CTRL2 = logic 0. Min/max specifications apply over supply, process, and temperature, unless
otherwise noted. (Notes 5, 7, 8)
PARAMETER
Small-Signal Gain
Gain vs. Temperature
Gain Variation vs. Frequency
(Note 9)
Noise Figure
Total Attenuation Range
Group-Delay Variation
NF
V
PLVLSET
= 0.2V to 2.5V
Within
Q50MHz
Within
Q80MHz
Within
Q100MHz
LO + 2IF, P
RF_OUT
= -2dBm
Spurious Response
LO - 2IF, P
RF_OUT
= -2dBm
LO + 3IF, P
RF_OUT
= -2dBm
LO - 3IF, P
RF_OUT
= -2dBm
Output Third-Order Intercept
Point
Output -1dB Compression Point
LO Leakage at IF_IN
IF_IN Return Loss
LO+ Port Return Loss
RF_OUT Return Loss
f
IF
= 140MHz
OIP3
P
1dB
P
RF_OUT
= -2dBm/tone,
f
RF2
- f
RF1
= 1MHz
35
1835MHz
Q
50MHz
1835MHz
Q
80MHz
1835MHz
Q
100MHz
SYMBOL
G
CONDITIONS
MIN
20
TYP
23
-0.016
0.25
0.4
0.6
5.4
37
133
220
285
60
70
67
77
24.5
12
-60
21
17.5
24
19.6
dBm
dBm
dBm
dB
dB
dB
dBc
ps
dB
dB
dB
MAX
26
UNITS
dB
dB/C
VGA + 2.5dB PAD + MIXER CASCADE
Maxim Integrated
3
50MHz to 500MHz Analog VGA, 1735MHz to 1935MHz
Upconverting Mixer with Image Filtering, Threshold
Alarm Circuit, and Error Amplifier for Level Control
AC ELECTRICAL CHARACTERISTICS (continued)
MAX2091
(Typical
Application Circuit
with analog attenuator set to maximum gain, V
CC
= 4.75V to 5.8V, f
RF
= 1835MHz, f
LO
= 1485MHz,
f
IF
= 350MHz, f
RF
= f
LO
+ f
IF
, P
LO
= -10dBm to -4dBm, T
C
= -40°C to +95°C, and IF_IN, LO+, and RF_OUT ports are connected
to 50ω sources and loads, unless otherwise noted. Typical values are at T
C
= +25°C, V
CC
= 5.5V, P
LO
= -7dBm, P
IF
= -25dBm,
V
PLVLSET
= 2.5V, CTRL1 = logic 1, CTRL2 = logic 0. Min/max specifications apply over supply, process, and temperature, unless
otherwise noted. (Notes 5, 7, 8)
PARAMETER
Small-Signal Gain
Noise Figure
Output Third-Order
Intercept Point
Output Second-Order
Intercept Point
Output Second Harmonic
Output Third Harmonic
Output -1dB Compression Point
Average Gain-Control Slope
Maximum Gain-Control Slope
VGA Reverse Isolation
P
IF_IN
= -15dBm, V
PLVLSET
= 2.5V to
1.2V, output settled to within
Q0.5dB
of
final value
P
IF_IN
= -15dBm, V
PLVLSET
= 1.2V to
2.5V, output settled to within
Q0.5dB
of
final value
V
PLVLSET
= 2.5V to 0V
G
NF
OIP3
P
1dB
f
IF
= 350MHz
Q
50MHz
15
-2.2
P
1dB
V
PLVLSET
= 0.5V to 2.0V
V
PLVLSET
= 0V to 2.5V
16.5
OIP3
OIP2
Up to 30dB attenuation,
P
IF_OUT
= 0dBm/tone, f
RF2
- f
RF1
= 1MHz
P
IF_OUT
= 0dBm/tone,
f
RF2
- f
RF1
= 1MHz
P
IF_OUT
= 0dBm
P
IF_OUT
= 0dBm
SYMBOL
CONDITIONS
MIN
23.5
TYP
26
4.0
38.8
57.4
64.5
80.0
17.6
19.5
25
35
330
ns
220
11.4
-0.5
17.1
24.7
12.2
20
-41
-35
HD2
HD3
P
RF_OUT
= -2dBm
P
RF_OUT
= -2dBm
P
RF_OUT
= -2dBm
65
77.5
33
22
24
20
1.5
Degrees
dB
dB
dBm
dBm
dB
dBm
dBm
dBc
dBc
dBc
dB
dB
dB
4
MAX
27.5
UNITS
dB
dB
dBm
dBm
dBc
dBc
dBm
IF VGA (ATTENUATOR + AMPLIFIER)
23.0
dB/V
dB/V
dB
Attenuator Response Time
Insertion Phase Change
MIXER WITH IMAGE REJECT FILTER
Conversion Gain
SSB Noise Figure
Output Third-Order Intercept
Point
Output -1dB Compression Point
Image Rejection
LO Leakage at RF_OUT
2LO Leakage at RF_OUT
Second Harmonic
Third Harmonic
3LO + IF Spur
MIX_IN Return Loss
LO+ Port Return Loss
RF_OUT Return Loss
Maxim Integrated
50MHz to 500MHz Analog VGA, 1735MHz to 1935MHz
Upconverting Mixer with Image Filtering, Threshold
Alarm Circuit, and Error Amplifier for Level Control
AC ELECTRICAL CHARACTERISTICS (continued)
MAX2091
(Typical
Application Circuit
with analog attenuator set to maximum gain, V
CC
= 4.75V to 5.8V, f
RF
= 1835MHz, f
LO
= 1485MHz,
f
IF
= 350MHz, f
RF
= f
LO
+ f
IF
, P
LO
= -10dBm to -4dBm, T
C
= -40°C to +95°C, and IF_IN, LO+, and RF_OUT ports are connected
to 50ω sources and loads, unless otherwise noted. Typical values are at T
C
= +25°C, V
CC
= 5.5V, P
LO
= -7dBm, P
IF
= -25dBm,
V
PLVLSET
= 2.5V, CTRL1 = logic 1, CTRL2 = logic 0. Min/max specifications apply over supply, process, and temperature, unless
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