Rainbow Electronics MAX19993 User Manual

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 pin­pin 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

The MAX19993 is pin compatible with the MAX9985/
MAX19985A/MAX9995/MA X 1 9 9 9 3 A / M A X 1 9 9 9 4 /
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

= -40NC to +85NC.

T

C

= +5.0V or 275mA at VCC = +3.3V.

CC

Applications

WCDMA/LTE Base Stations

Wireless Local Loop

Fixed Broadband Wireless Access

Private Mobile Radios

Military Systems

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

PRF = -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 MAX9985/19985A/

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

for Operating Device in Reduced-Power/Reduced­Performance Mode

Ordering Information

PART TEMP RANGE PIN-PACKAGE

MAX19993ETX+
MAX19993ETX+T

+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.

T = Tape and reel.

-40NC to +85NC

-40NC to +85NC

36 TQFN-EP*
36 TQFN-EP*

MAX19993

_______________________________________________________________ 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

ABSOLUTE MAXIMUM RATINGS

VCC to GND ..........................................................-0.3V to +5.5V

LO1, LO2 to GND
LOSEL to GND
RFMAIN, RFDIV, and LO_ Input Power
RFMAIN, RFDIV Current (RF is DC shorted to GND

through a balun)
TAPMAIN, TAPDIV
Any Other Pins to GND

MAX19993

Note 1: Based on junction temperature TJ = TC + (BJC x VCC x ICC). 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 TJ = TA + (BJA x VCC x ICC). 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: TC 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.

.............................................................. Q0.3V

......................................... -0.3V to (VCC + 0.3V)

........................+15dBm

.............................................................50mA

..................................................-0.3V to +2V

............................ -0.3V to (VCC + 0.3V)

Continuous Power Dissipation (Note 1)

BJA (Notes 2, 3)
B

(Notes 1, 3)

JC
Operating Temperature Range (Note 4)
Junction Temperature
Storage Temperature Range
Lead Temperature (soldering, 10s)
Soldering Temperature (reflow)

........................................................... +38NC/W

.............................................................7.4NC/W

.....................................................+150NC

............................ -65NC to +150NC

................................+300NC

......................................+260NC

..............................8.7W

... TC = -40NC to +85NC

5.0V SUPPLY DC ELECTRICAL CHARACTERISTICS

(Typical Application Circuit, VCC = 4.75V to 5.25V, no input AC signals. TC = -40NC to +85NC, R1 = R4 = 681I,
R2 = R5 = 1.82kI. Typical values are at V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage V
Supply Current I
LOSEL Input High Voltage V
LOSEL Input Low Voltage V
LOSEL Input Current I

IH and IIL

= 5.0V, TC = +25NC, unless otherwise noted. All parameters are production tested.)

CC

CC

CC

Total supply current 337 400 mA

IH

IL

4.75 5 5.25 V

2 V

0.8 V

-10 +10

FA

3.3V SUPPLY DC ELECTRICAL CHARACTERISTICS

(Typical Application Circuit, VCC = 3.0V to 3.6V, no input AC signals. TC = -40NC to +85NC, R1 = R4 = 681I, R2 = R5 = 1.43kI.
Typical values are at V
tested.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage V
Supply Current I
LOSEL Input High Voltage V
LOSEL Input Low Voltage V

= 3.3V, TC = +25NC, unless otherwise noted. Parameters are guaranteed by design and not production

CC

CC

CC

Total supply current (Note 5) 275 mA

IH

IL

3.0 3.3 3.6 V

2 V

0.8 V

2

Dual, SiGe, High-Linearity, 1200MHz to 1700MHz

Downconversion Mixer with LO Buffer/Switch

RECOMMENDED AC OPERATING CONDITIONS

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

RF Frequency f
LO Frequency f

IF Frequency f

RF

LO

(Note 6) 1200 1700 MHz
(Note 6) 1000 1560 MHz

Using Mini-Circuits TC4-1W-17 4:1 trans­former as defined in the Typical Application
Circuit, IF matching components affect the
IF frequency range (Note 6)

IF

Using Mini-Circuits TC4-1W-7A 4:1 trans­former as defined in the Typical Application
Circuit, IF matching components affect the
IF frequency range (Note 6)

100 500

50 250

MAX19993

MHz

LO Drive Level P

(Note 6) -6 +3 dBm

LO

5.0V SUPPLY, LOW-SIDE INJECTION AC ELECTRICAL CHARACTERISTICS

(Typical Application Circuit (see Table 1). R1 = R4 = 681I, R2 = R5 = 1.82kI, VCC = 4.75V to 5.25V, RF and LO ports are driven from
50I sources, P
T

= -40NC to +85NC. Typical values are at VCC = +5.0V, PRF = -5dBm, PLO = 0dBm, fRF = 1450MHz, fLO = 1310MHz, fIF = 140MHz,

C

TC = +25NC. All parameters are guaranteed by design and characterization, unless otherwise noted.) (Note 7)

Conversion Gain (Note 5) G

Conversion Gain Flatness
Gain Variation Over Temperature TC
Input Compression Point IP

Input Third-Order Intercept Point IIP3

Input Third-Order Intercept Point
Variation Over Temperature

Noise Figure (Note 9) NF

= -6dBm to +3dBm, PRF = -5dBm, fRF = 1200MHz to 1700MHz, f

LO

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

T

C

DG

C

CG

1dBfRF

TC

IIP3

SSB

= +25NC

C

= +25NC, fRF = 1427MHz to 1463MHz

T

C

fRF = 1427MHz to 1463MHz
TC = -40NC to +85NC

= 1450MHz (Notes 5, 8) 12.9 15.4 dBm

f

- f

RF1

f

RF1

f

RF

(Note 5)

f

RF1

f

RF

f

RF1

T

C

Single sideband, no blockers present 9.8 12.7

fRF = 1427MHz to 1463MHz, TC = +25NC,
P

LO

present

f

RF

single sideband, no blockers present

= 1MHz, PRF = -5dBm per tone 24.0 27.0

RF2

- f

= 1MHz, PRF = -5dBm per tone,

RF2

= 1427MHz to 1463MHz, TC = +25NC

- f

= 1MHz, PRF = -5dBm per tone,

RF2

= 1427MHz to 1463MHz (Note 5)

- f

= 1MHz, PRF = -5dBm per tone,

RF2

= -40NC to +85NC

= 0dBm, single sideband, no blockers

= 1427MHz to 1463MHz, PLO = 0dBm,

= 1060MHz to 1560MHz, fIF = 140MHz, fRF > fLO,

LO

4.5 6.4 7.4

5.1 6.4 7.0

5.2 6.4 6.9
Q0.03

-0.009

24.8 27.0

24.4 27.0

Q0.5

9.8 11.0

9.8 12.0

dB/NC

dBm

dBm

dB

dB

dB

3

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, VCC = 4.75V to 5.25V, RF and LO ports are driven from
50I sources, P
T

= -40NC to +85NC. Typical values are at VCC = +5.0V, PRF = -5dBm, PLO = 0dBm, fRF = 1450MHz, fLO = 1310MHz, fIF = 140MHz,

C

TC = +25NC. All parameters are guaranteed by design and characterization, unless otherwise noted.) (Note 7)

Noise Figure Temperature
Coefficient

MAX19993

Noise Figure with Blocker NF

2RF - 2LO Spur Rejection
(Note 9)

3RF - 3LO Spur Rejection
(Note 9)

RF Input Return Loss

LO Input Return Loss

IF Output Impedance Z

IF Output Return Loss

RF-to-IF Isolation (Note 5) 33 dB
LO Leakage at RF Port -38 dBm
2LO Leakage at RF Port -27 dBm

= -6dBm to +3dBm, PRF = -5dBm, fRF = 1200MHz to 1700MHz, f

LO

= 1060MHz to 1560MHz, fIF = 140MHz, fRF > fLO,

LO

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

TC

Single sideband, no blockers present,

NF

T

= -40NC to +85NC

C

P

BLOCKER

f

LO

B

P

LO

= +8dBm, fRF = 1450MHz,

= 1310MHz, f

BLOCKER

= 0dBm, VCC = 5.0V, TC = +25oC

= 1550MHz,

0.016

21.0 22.8 dB

(Notes 9, 10)

= 1450MHz,

f

2x2

3x3

RF

f

= 1310MHz,

LO

f

= 1380MHz

SPUR

= 1450MHz,

f

RF

f

= 1310MHz,

LO

f

= 1380MHz,

SPUR

P

= 0dBm,

LO

V

= 5.0V,

CC

T

= +25oC

C

f

= 1450MHz,

RF

f

= 1310MHz,

LO

f

= 1356.67MHz

SPUR

f

= 1450MHz,

RF

f

= 1310MHz,

LO

f

= 1356.67MHz,

SPUR

P

= 0dBm,

LO

V

= 5.0V,

CC

T

= +25oC

C

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

Nominal differential impedance of the IF

IF

outputs

P

= -10dBm 58 72

RF

= -5dBm 53 67

P

RF

P

= -10dBm 61 72

RF

= -5dBm 56 67

P

RF

P

= -10dBm 77 93

RF

= -5dBm 67 83

P

RF

= -10dBm 82 93

P

RF

= -5dBm 72 83

P

RF

21 dB

24

27

200

RF terminated into 50I, LO driven by
50I source, IF transformed to 50I using
external components shown in the Typical

15 dB

Application Circuit

dB/NC

dBc

dBc

dBc

dBc

dB

I

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, VCC = 4.75V to 5.25V, RF and LO ports are driven from
50I sources, P
T

= -40NC to +85NC. Typical values are at VCC = +5.0V, PRF = -5dBm, PLO = 0dBm, fRF = 1450MHz, fLO = 1310MHz, fIF = 140MHz,

C

TC = +25NC. All parameters are guaranteed by design and characterization, unless otherwise noted.) (Note 7)

LO Leakage at IF Port (Note 5) -18 dBm

Channel Isolation (Note 5)

LO-to-LO Isolation

LO Switching Time 50% of LOSEL to IF settled within 2 degrees 50 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 VCC = 3.3V, PRF = -5dBm, PLO = 0dBm,
f

= 1450MHz, fLO = 1310MHz, fIF = 140MHz, TC = +25NC, unless otherwise noted.) (Note 7)

RF

Conversion Gain G
Conversion Gain Flatness
Gain Variation Over Temperature TC
Input Compression Point IP
Input Third-Order Intercept Point IIP3 f

Input Third-Order Intercept Point
Variation Over Temperature

Noise Figure NF

Noise Figure Temperature
Coefficient

2RF - 2LO Spur Rejection 2 x 2

3RF - 3LO Spur Rejection 3 x 3

RF Input Return Loss

LO Input Return Loss

= -6dBm to +3dBm, PRF = -5dBm, fRF = 1200MHz to 1700MHz, f

LO

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

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

= +3dBm, P

P

LO1

f

= 1310MHz, f

LO1

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

(Note 5) 6.2 dB

C

DG

1dB

TC

TC

fRF = 1427MHz to 1463MHz

C

TC = -40NC to +85NC

CG

(Note 8) 12.8 dBm

- f

RF1

f

IIP3

SSB

RF1

T

C

Single sideband, no blockers present 9.8 dB

Single sideband, no blockers present,

NF

T

C

P

RF

P

RF

P

RF

P

RF

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

= 1MHz 24.4 dBm

RF2

- f

= 1MHz, PRF = -5dBm per tone,

RF2

= -40NC to +85NC

= -40NC to +85NC

= -10dBm 73
= -5dBm 68
= -10dBm 80
= -5dBm 70

= +3dBm,

LO2

= 1311MHz (Note 5)

LO2

= 1060MHz to 1560MHz, fIF = 140MHz, fRF > fLO,

LO

43 47

43 47

47 57 dB

Q0.05

-0.009

Q0.8

0.016

21 dB

24

27

dB/NC

dB/NC

dB

dB

dBm

dBc

dBc

dB

MAX19993

5

Dual, SiGe, High-Linearity, 1200MHz to 1700MHz
Downconversion Mixer with LO Buffer/Switch

3.3V SUPPLY, LOW SIDE INJECTION AC ELECTRICAL CHARACTERISTICS (continued)

(Typical Application Circuit (see Table 1). R1 = R4 = 681I, R2 = R5 = 1.43kI. Typical values are at VCC = 3.3V, PRF = -5dBm, PLO = 0dBm,
f

= 1450MHz, fLO = 1310MHz, fIF = 140MHz, TC = +25NC, unless otherwise noted.) (Note 7)

RF

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

RF terminated into 50I, LO driven by

IF Output Return Loss

MAX19993

RF-to-IF Isolation 33 dB
LO Leakage at RF Port -45 dBm
2LO Leakage at RF Port -27 dBm
LO Leakage at IF Port -22 dBm

Channel Isolation

LO-to-LO Isolation

LO Switching Time

Note 5: 100% production tested for functionality.
Note 6: Not production tested. Operation outside this range is possible, but with degraded performance of some parameters. See

the Typical Operating Characteristics section.

Note 7: All limits reflect losses of external components, including a 0.5dB loss at fIF = 140MHz due to the 4:1 transformer. Output

measurements were taken at IF outputs of the Typical Application Circuit.

Note 8: Maximum reliable continuous input power applied to the RF or IF port of this device is +12dBm from a 50I source.
Note 9: Not production tested.
Note 10: Measured with external LO source noise filtered so the noise floor is -174dBm/Hz. This specification reflects the effects

of all SNR degradations in the mixer, including the LO noise as defined in Application Note 2021: Specifications and
Measurement of Local Oscillator Noise in Integrated Circuit Base Station Mixers.

50I source, IF transformed to 50I using
external components shown in the Typical

Application Circuit

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

= +3dBm, P

P

LO1

f

= 1310MHz, f

LO1

50% of LOSEL to IF settled within
2 degrees

= +3dBm,

LO2

= 1311MHz

LO2

15 dB

47

47

57 dB

50 ns

dB

6

Dual, SiGe, High-Linearity, 1200MHz to 1700MHz

Downconversion Mixer with LO Buffer/Switch

Typical Operating Characteristics

(Typical Application Circuit (see Table 1). V
otherwise noted.)

CC

= 5.0V, f

RF

> f

for a 140MHz IF, P

LO

= -5dBm, P

RF

= 0dBm,

LO

= +25°C, unless

TC

MAX19993

CONVERSION GAIN vs. RF FREQUENCY

8

7

6

CONVERSION GAIN (dB)

5

4

TC = +25°C

1200 1700

RF FREQUENCY (MHz)

TC = -40°C

TC = +85°C

INPUT IP3 vs. RF FREQUENCY

28

27

INPUT IP3 (dBm)

26

TC = +85°C

PRF = -5dBm/TONE

TC = +25°C

TC = -40°C

CONVERSION GAIN vs. RF FREQUENCY

8

MAX19993 toc01

1600150014001300

7

6

PLO = -6dBm, -3dBm, 0dBm, +3dBm

CONVERSION GAIN (dB)

5

4

1200 1700

RF FREQUENCY (MHz)

1600150014001300

MAX19993 toc02

INPUT IP3 vs. RF FREQUENCY

MAX19993 toc04

28

27

INPUT IP3 (dBm)

26

PLO = +3dBm

PLO = -3dBm

PRF = -5dBm/TONE

MAX19993 toc05

PLO = 0dBm

CONVERSION GAIN vs. RF FREQUENCY

8

7

6

CONVERSION GAIN (dB)

5

4

1200 1700

VCC = 4.75V, 5.0V, 5.25V

RF FREQUENCY (MHz)

INPUT IP3 vs. RF FREQUENCY

28

27

INPUT IP3 (dBm)

26

PRF = -5dBm/TONE

VCC = 5.25V

VCC = 5.0V

MAX19993 toc03

1600150014001300

MAX19993 toc06

25

1200 1700

RF FREQUENCY (MHz)

NOISE FIGURE vs. RF FREQUENCY

13

12

11

10

NOISE FIGURE (dB)

9

8

7

TC = +85°C

TC = +25°C

TC = -40°C

1200 1700

RF FREQUENCY (MHz)

PLO = -6dBm

1600150014001300

25

1200 1700

RF FREQUENCY (MHz)

1600150014001300

NOISE FIGURE vs. RF FREQUENCY

13

12

MAX19993 toc07

11

10

NOISE FIGURE (dB)

9

PLO = -6dBm, -3dBm, 0dBm, +3dBm

8

1600150014001300

7

1200 1700

RF FREQUENCY (MHz)

1600150014001300

MAX19993 toc08

NOISE FIGURE (dB)

25

1200 1700

NOISE FIGURE vs. RF FREQUENCY

13

12

11

10

9

8

7

1200 1700

VCC = 4.75V

1600150014001300

RF FREQUENCY (MHz)

MAX19993 toc09

VCC = 4.75V, 5.0V, 5.25V

1600150014001300

RF FREQUENCY (MHz)

7