Rainbow Electronics MAX19995 User Manual

General Description

The MAX19995 dual-channel downconverter provides
up to 9dB of conversion gain, +24.8dBm input IP3,
+13.3dBm 1dB input compression point, and a noise
figure as low as 9dB for 1700MHz to 2200MHz diversity
receiver applications. With an optimized LO frequency
range of 1400MHz to 2000MHz, this mixer is ideal for
low-side LO injection architectures. High-side LO injec­tion is supported by the MAX19995A, which is pin-pin
and functionally compatible with the MAX19995.

In addition to offering excellent linearity and noise per­formance, the MAX19995 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 MAX19995 requires a nominal LO drive of 0dBm
and a typical supply current of 297mA at V

CC

= 5.0V or

212mA at V

CC

= 3.3V.

The MAX19995/MAX19995A are pin compatible with
the MAX19985/MAX19985A series of 700MHz to
1000MHz mixers and pin similar with the MAX19997A/
MAX19999 series of 1800MHz to 4000MHz mixers,
making this entire family of downconverters ideal for
applications where a common PCB layout is used
across multiple frequency bands.

The MAX19995 is available in a 6mm x 6mm, 36-pin
thin QFN package with an exposed pad. Electrical per­formance is guaranteed over the extended temperature
range, from TC= -40°C to +85°C.

Applications

UMTS/WCDMA/LTE Base Stations

cdma2000®Base Stations

DCS1800 and EDGE Base Stations

PCS1900 and EDGE Base Stations

PHS/PAS Base Stations

Fixed Broadband Wireless Access

Wireless Local Loop

Private Mobile Radios

Military Systems

Features

o 1700MHz to 2200MHz RF Frequency Range

o 1400MHz to 2000MHz LO Frequency Range

o 1750MHz to 2700MHz LO Frequency Range

(MAX19995A)

o 50MHz to 500MHz IF Frequency Range

o 9dB Typical Conversion Gain

o 9dB Typical Noise Figure

o +24.8dBm Typical Input IP3

o +13.3dBm Typical Input 1dB Compression Point

o 79dBc Typical 2RF-2LO Spurious Rejection at

P

RF

= -10dBm

o Dual Channels Ideal for Diversity Receiver

Applications

o 49dB Typical Channel-to-Channel Isolation

o Low -3dBm to +3dBm LO Drive

o Integrated LO Buffer

o Internal RF and LO Baluns for Single-Ended

Inputs

o Built-In SPDT LO Switch with 56dB LO-to-LO

Isolation and 50ns Switching Time

o Pin Compatible with the MAX19985/MAX19985A/

MAX19995A Series of 700MHz to 2200MHz Mixers

o Pin Similar to the MAX19997A/MAX19999 Series

of 1800MHz to 4000MHz Mixers

o Single +5.0V or +3.3V Supply

o External Current-Setting Resistors Provide Option

for Operating Device in Reduced-Power/Reduced­Performance Mode

MAX19995

Dual, SiGe, High-Linearity, 1700MHz to 2200MHz

Downconversion Mixer with LO Buffer/Switch

________________________________________________________________

Maxim Integrated Products

1

Ordering Information

19-4253; Rev 0; 12/08

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.

cdma2000 is a trademark of Telecommunications Industry
Association.

PART

PIN-PACKAGE

MAX19995ETX+

36 Thin QFN-EP*

36 Thin QFN-EP*

Pin Configuration and Typical Application Circuit appear at
end of data sheet.

+

Denotes a lead(Pb)-free/RoHS-compliant package.

*

EP = Exposed pad.

T = Tape and reel.

TEMP RANGE

-40°C to +85°C

MAX19995ETX+T -40°C to +85°C

MAX19995

Dual, SiGe, High-Linearity, 1700MHz to 2200MHz
Downconversion Mixer with LO Buffer/Switch

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

+5.0V SUPPLY DC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

optimized for the DCS/PCS band, VCC= +4.75V to +5.25V, TC= -40°C to +85°C. R1 = R4 = 806Ω, R2 =

R5 = 2.32kΩ. Typical values are at V

CC

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

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.

Note 1: Based on junction temperature TJ= TC+ (θJCx VCCx 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 +150°C.

Note 2: Junction temperature T

J

= TA+ (θJAx VCCx ICC). This formula can be used when the ambient temperature of the PCB is

known. The junction temperature must not exceed +150°C.

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: TCis the temperature on the exposed pad of the package. TA is the ambient temperature of the device and PCB.

V

CC

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

LO1, LO2 to GND ...............................................................±0.3V

Any Other Pins 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

Continuous Power Dissipation (Note 1) ...............................8.7W

θ

JA

(Notes 2, 3)..............................................................+38°C/W

θ

JC

(Notes 1, 3)...............................................................7.4°C/W

Operating Case Temperature Range

(Note 4).............................................................-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

+3.3V SUPPLY DC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

, VCC= +3.0V to +3.6V, TC= -40°C to +85°C, R1 = R4 = 909Ω, R2 = R5 = 2.49kΩ. Typical values are at

V

CC

= +3.3V, TC= +25°C, unless otherwise noted. All parameters are guaranteed by design and not production tested.)

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 IIH and I

CC

CC

Total supply current, VCC = +5.0V 297 370 mA

IH

IL

IL

4.75 5 5.25 V

2V

0.8 V

-10 +10 µA

Supply Voltage V

Supply Current I

LOSEL Input High Voltage V

LOSEL Input Low Voltage V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

CC

CC

Total supply current, VCC = +3.3V 212 mA

IH

IL

3.0 3.3 3.6 V

2V

0.8 V

MAX19995

Dual, SiGe, High-Linearity, 1700MHz to 2200MHz

Downconversion Mixer with LO Buffer/Switch

_______________________________________________________________________________________ 3

RECOMMENDED AC OPERATING CONDITIONS

+5.0V SUPPLY AC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

optimized for the DCS/PCS band, R1 = R4 = 806Ω, R2 = R5 = 2.32kΩ, VCC= +4.75V to +5.25V, RF and

LO ports are driven from 50Ω sources, P

LO

= -3dBm to +3dBm, PRF= -5dBm, fRF= 1700MHz to 2000MHz, fLO= 1510MHz to

1810MHz, f

IF

= 190MHz, fRF> fLO, TC= -40°C to +85°C. Typical values are at VCC= +5.0V, PRF= -5dBm, PLO= 0dBm,

fRF= 1800MHz, f

LO

= 1610MHz, fIF= 190MHz, TC= +25°C, unless otherwise noted.) (Note 6)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

RF Frequency fRF (Note 5) 1700 2200 MHz

LO Frequency fLO (Note 5) 1400 2000 MHz

Using Mini-Circuit s TC4-1W-17 4:1
transformer as defined in the typical
application circuit, IF matching components

IF Frequency f

LO Drive Le vel PLO -3 +3 dBm

IF

affect the IF frequency range (Note 5)

Using alternative Mini-Circuits TC4-1W-7A
4:1 tran sformer, IF matching component s
affect the IF frequency range (Note 5)

100 500 MHz

50 250 MHz

Conversion Gain G

Conversion Gain Flatness

Gain Variation Over Temperature TC

Input Compression Point
(Note 7)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

7911

TC = +25°C 7.8 9 10.2

C

Typical Application Circuit optimized for
UMTS band (R1 = R4 = 681Ω, R2 = R5 =

1.5kΩ), f

Flatness over any one of three frequency
bands:
fRF = 1710MHz to 1785MHz

= 1850MHz to 1910MHz

f

RF

f

= 1920MHz to 1980MHz

RF

fRF = 1700MHz to 2000MHz,
f

CG

IP

1dB

LO

= 190MHz, TC = -40°C to +85°C

f

IF

f

RF

Typical Application Circuit optimized for
UMTS band (R1 = R4 = 681Ω, R2 = R5 =

1.5kΩ), f
f

= 1950MHz

RF

= 1760MHz, fRF = 1950MHz

LO

= 1510MHz to 1810MHz ,

= 1700MHz for min value 9.5 12.5

= 1760MHz, fIF = 190MHz,

LO

8.9

±0.1 dB

-0.009 dB/°C

13.3

dB

dBm

MAX19995

Dual, SiGe, High-Linearity, 1700MHz to 2200MHz
Downconversion Mixer with LO Buffer/Switch

4 _______________________________________________________________________________________

+5.0V SUPPLY AC ELECTRICAL CHARACTERISTICS (continued)

(

Typical Application Circuit

optimized for the DCS/PCS band, R1 = R4 = 806Ω, R2 = R5 = 2.32kΩ, VCC= +4.75V to +5.25V, RF and

LO ports are driven from 50Ω sources, P

LO

= -3dBm to +3dBm, PRF= -5dBm, fRF= 1700MHz to 2000MHz, fLO= 1510MHz to

1810MHz, f

IF

= 190MHz, fRF> fLO, TC= -40°C to +85°C. Typical values are at VCC= +5.0V, PRF= -5dBm, PLO= 0dBm,

fRF= 1800MHz, f

LO

= 1610MHz, fIF= 190MHz, TC= +25°C, unless otherwise noted.) (Note 6)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Input Intercept Point IIP3

Input Intercept Variation Over
Temperature

f

- f

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

RF2

= 2000MHz for min value

- f

RF1

RF2

RF2

= 1MHz,

= -5dBm per tone, TC = +25°C to

= 1760MHz, fIF = 190MHz,

LO

= 1950MHz, f

= -5dBm per tone

- f

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

RF2

= -40°C to +85°C

RF1

- f

= 1MHz,

20.5 23.7

21.5 23.7

24.8

0.0035 dBm/°C

911

TC

RF1

f

RF

fIF = 190MHz, fLO = 1810MHz, fRF =
2000MHz for min value, f
P

RF

+85°C

Typical Application Circuit optimized for
UMTS band (R1 = R4 = 681Ω, R2 = R5 =

1.5kΩ), f
f

RF

P

RF

f

IIP3

RF1

T

C

Single sideband, no blockers present
(Note 8)

dBm

Noise Figure NF

Noise Figure Temperature
Coefficient

Noise Figure with Blocker NF

TC

SSB

NF

B

fLO = 1610MHz, fIF = 190MHz,
f

= 1800MHz, TC = +25°C, PLO = 0dBm,

RF

single sideband, no blockers present
(Note 8)

Typical Application Circuit optimized for
UMTS band (R1 = R4 = 681Ω , R2 = R5 =

1.5kΩ), f
f

RF

blockers present

Single sideband, no blockers present,
T

C

f

BLOCKER

+8dBm, f
P

LO

(Notes 8, 9)

= 190MHz, fLO = 1760MHz,

IF

= 1950MHz, single sideband, no

= -40°C to +85°C

= 1900MHz, P

= 1800MHz, fLO = 1610MHz,

RF

= 0dBm, VCC = +5.0V, TC = +25°C

BLOCKER

=

9 9.6

dB

9.3

0.016 dB/°C

19 20.5 dB

MAX19995

Dual, SiGe, High-Linearity, 1700MHz to 2200MHz

Downconversion Mixer with LO Buffer/Switch

_______________________________________________________________________________________ 5

+5.0V SUPPLY AC ELECTRICAL CHARACTERISTICS (continued)

(

Typical Application Circuit

optimized for the DCS/PCS band, R1 = R4 = 806Ω, R2 = R5 = 2.32kΩ, VCC= +4.75V to +5.25V, RF and

LO ports are driven from 50Ω sources, P

LO

= -3dBm to +3dBm, PRF= -5dBm, fRF= 1700MHz to 2000MHz, fLO= 1510MHz to

1810MHz, f

IF

= 190MHz, fRF> fLO, TC= -40°C to +85°C. Typical values are at VCC= +5.0V, PRF= -5dBm, PLO= 0dBm,

fRF= 1800MHz, f

LO

= 1610MHz, fIF= 190MHz, TC= +25°C, unless otherwise noted.) (Note 6)

2RF-2LO Spur Rejection 2 x 2

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

fRF = 1800MHz, fLO = 1610MHz,
P

= -10dBm (Note 8)

RF

fRF = 1800MHz, fLO = 1610MHz,
P

= -5dBm (Note 8)

RF

fRF = 1800MHz, fLO = 1610MHz,
P

= 0dBm, PRF = -10dBm,

LO

= +5.0V, TC = +25°C (Note 8)

V

CC

fRF = 1800MHz, fLO = 1610MHz,

= 0dBm, PRF = -5dBm, VCC = +5.0V,

P

LO

T

= +25°C (Note 8)

C

Typical Application Circuit optimized for
UMTS band (R1 = R4 = 681Ω, R2 = R5 =

1.5kΩ), f
f

RF

Typical Application Circuit optimized for
UMTS band (R1 = R4 = 681Ω, R2 = R5 =

1.5kΩ), f
f

RF

fRF = 1800MHz, f
P

RF

fRF = 1800MHz, f
P

RF

fRF = 1800MHz, f
P

LO

V

CC

= 190MHz, fLO = 1760MHz,

IF

= 1950MHz, PRF = -10dBm

= 190MHz, fLO = 1760MHz,

IF

= 1950MHz, PRF = -5dBm

= 1610MHz,

= -10dBm (Note 8)

= -5dBm (Note 8)

= 0dBm, P

= +5.0V, TC = +25oC (Note 8)

LO

= 1610MHz,

LO

= 1610MHz,

LO

= -10dBm,

RF

54 79

49 74

56 79

51 74

79

74

77 91

67 81

79 91

dBc

3RF-3LO Spur Rejection 3 x 3

fRF = 1800MHz, fLO = 1600MHz,

= 0dBm, P

P

LO

= +25°C (Note 8)

T

C

Typical Application Circuit optimized for
UMTS band (R1 = R4 = 681Ω, R2 = R5 =

1.5kΩ), f
f

Typical Application Circuit optimized for
UMTS band (R1 = R4 = 681Ω, R2 = R5 =

1.5kΩ), f
f

IF

= 1950MHz, PRF = -10dBm

RF

IF

= 1950MHz, PRF = -5dBm

RF

= -5dBm, VCC = +5.0V,

RF

= 190MHz, fLO = 1760MHz,

= 190MHz, f

= 1760MHz,

LO

69 81

86

76

dBc

MAX19995

Dual, SiGe, High-Linearity, 1700MHz to 2200MHz
Downconversion Mixer with LO Buffer/Switch

6 _______________________________________________________________________________________

+5.0V SUPPLY AC ELECTRICAL CHARACTERISTICS (continued)

(

Typical Application Circuit

optimized for the DCS/PCS band, R1 = R4 = 806Ω, R2 = R5 = 2.32kΩ, VCC= +4.75V to +5.25V, RF and

LO ports are driven from 50Ω sources, P

LO

= -3dBm to +3dBm, PRF= -5dBm, fRF= 1700MHz to 2000MHz, fLO= 1510MHz to

1810MHz, f

IF

= 190MHz, fRF> fLO, TC= -40°C to +85°C. Typical values are at VCC= +5.0V, PRF= -5dBm, PLO= 0dBm,

fRF= 1800MHz, f

LO

= 1610MHz, fIF= 190MHz, TC= +25°C, unless otherwise noted.) (Note 6)

+3.3V SUPPLY AC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

. Typical values are at VCC= +3.3V, PRF= -5dBm, PLO= 0dBm, fRF= 1800MHz, fLO= 1610MHz,

f

IF

= 190MHz, TC= +25°C, unless otherwise noted.) (Note 6)

RF Input Return Loss

LO Input Return Loss

IF Output Impedance Z

IF Return Loss

RF-to-IF Isolation fRF = 1700MHz for min value 30 39 dB

LO Leakage at RF Port (Notes 8, 10) -31 -24.7 dBm

2LO Leakage at RF Port (Note 8) -20 -16 dBm

LO Leakage at IF Port (Note 8) -40 -27 dBm

Channel Isolation

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

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 IC’s

IF

IF outputs

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

Application Circuit

RFMAIN converted power measured at
IFD_, relative to IFM_, all unused ports
terminated to 50Ω

RFDIV converted power measured at IFM_,
relative to IFD_, all unused ports terminated
to 50Ω

40 49

40 49

21 dB

20

19

200 Ω

12.5 dB

dB

dB

LO-to-LO Isolation

LO Switching Time

= +3dBm, P

LO1

f

= 1610MHz, f

LO1

50% of LOSEL to IF settled within 2
degrees

= +3dBm,

LO2

= 1611MHz

LO2

40 56 dB

50 ns

P

Conversion Gain G

Conversion Gain Flatness

G ai n V ar i ati on Over Tem p er atur eTCCGTC = -40°C to +85°C -0.009 dB/°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

C

Flatness over any one of three frequency
bands:
fRF = 1710MHz to 1785MHz

= 1850MHz to 1910MHz

f

RF

f

= 1920MHz to 1980MHz

RF

8.4 dB

±0.1 dB

MAX19995

Dual, SiGe, High-Linearity, 1700MHz to 2200MHz

Downconversion Mixer with LO Buffer/Switch

_______________________________________________________________________________________ 7

+3.3V SUPPLY AC ELECTRICAL CHARACTERISTICS (continued)

(

Typical Application Circuit

. Typical values are at VCC= +3.3V, PRF= -5dBm, PLO= 0dBm, fRF= 1800MHz, fLO= 1610MHz,

f

IF

= 190MHz, TC= +25°C, unless otherwise noted.) (Note 6)

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

the

Typical Operating Characteristics

.

Note 6: All limits reflect losses of external components, including a 0.65dB loss at f

IF

= 190MHz due to the 4:1 impedance trans-

former. Output measurements were taken at IF outputs of the

Typical Application Circuit

.

Note 7: Maximum reliable continuous input power applied to the RF or IF port of this device is +12dBm from a 50Ω source.
Note 8: Guaranteed by design and characterization.
Note 9: 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.

Note 10: Limited production testing.

Input Compression Point IP

Input Intercept Point IIP3 f

Input Intercept 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 on and IF terminated 21 dB

LO Input Return Loss

IF Return Loss

RF-to-IF Isolation 42 dB

LO Leakage at RF Port -40 dBm

2LO Leakage at RF Port -29 dBm

LO Leakage at IF Port -43 dBm

Channel Isolation

LO-to-LO Isolation

LO Switching Time 50% of LO S E L to IF settl ed w i thi n 2 d eg r ees 50 ns

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

1dB

TC

TC

(Note 7) 8.9 dBm

- f

RF1

IIP3fRF1

Single sideband, no blockers present 9.0 dB

SSB

Single sideband, no blockers present,

NF

T

C

PRF = -10dBm 73

P

RF

PRF = -10dBm 70

P

RF

LO port selected, RF and IF terminated into
matched impedance

LO port unselected, RF and IF terminated
into matched impedance

RF terminated into 50Ω, LO driven by 50Ω
source, IF transformed to 50Ω using
external components shown in Typical
Application Circuit, f

RFMAIN converted power measured at
IFD_, relative to IFM_, all unused ports
terminated to 50Ω

RFDIV converted power measured at IFM_,
relative to IFD_, all unused ports terminated
to 50Ω

P

LO1

f

LO1

= 1MHz 18.5 dBm

RF2

- f

= 1MHz, TC = -40°C to +85°C 0.0034 dBm/°C

RF2

= -40°C to +85°C

= -5dBm 68

= -5dBm 60

= 190MHz

IF

= +3dBm, P

= 1610MHz, f

= +3dBm,

LO2

= 1611MHz

LO2

0.016 dB/°C

16

20

12.5 dB

49

49

55 dB

dBc

dBc

dB

dB

MAX19995

Dual, SiGe, High-Linearity, 1700MHz to 2200MHz
Downconversion Mixer with LO Buffer/Switch

8 _______________________________________________________________________________________

Typical Operating Characteristics

(

Typical Application Circuit

, optimized for the DCS/PCS band, R1 = R4 = 806Ω, R2 = R5 = 2.32kΩ, VCC= +5.0V, PLO= 0dBm,

P

RF

= -5dBm, LO is low-side injected for a 190MHz IF, TC= +25°C, unless otherwise noted.)

CONVERSION GAIN vs. RF FREQUENCY

11

10

9

8

CONVERSION GAIN (dB)

7

6

1700 2500

TC = -30°C

TC = +85°C

TC = +25°C

RF FREQUENCY (MHz)

INPUT IP3 vs. RF FREQUENCY

25

24

23

TC = -30°C

22

INPUT IP3 (dBm)

21

20

1700 2500

TC = +25°C

RF FREQUENCY (MHz)

230021001900

PRF = -5dBm/TONE

TC = +85°C

230021001900

11

MAX19995 toc01

10

9

8

CONVERSION GAIN (dB)

7

6

25

MAX19995 toc04

24

23

22

INPUT IP3 (dBm)

21

20

CONVERSION GAIN vs. RF FREQUENCY

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

1700 2500

RF FREQUENCY (MHz)

230021001900

INPUT IP3 vs. RF FREQUENCY

PRF = -5dBm/TONE

PLO = -3dBm

PLO = 0dBm

PLO = +3dBm

1700 2500

RF FREQUENCY (MHz)

230021001900

11

10

MAX19995 toc02

9

8

CONVERSION GAIN (dB)

7

6

1700 2500

25

MAX19995 toc05

24

23

22

INPUT IP3 (dBm)

21

20

1700 2500

CONVERSION GAIN vs. RF FREQUENCY

MAX19995 toc03

VCC = 4.75V, 5.0V, 5.25V

230021001900

RF FREQUENCY (MHz)

INPUT IP3 vs. RF FREQUENCY

PRF = -5dBm/TONE

MAX19995 toc06

VCC = 5.25V

VCC = 4.75V

VCC = 5.0V

230021001900

RF FREQUENCY (MHz)

NOISE FIGURE vs. RF FREQUENCY

12

11

10

9

NOISE FIGURE (dB)

8

7

6

1700 2500

TC = +85°C

TC = +25°C

TC = -30°C

230021001900

RF FREQUENCY (MHz)

MAX19995 toc07

NOISE FIGURE vs. RF FREQUENCY

12

11

10

9

NOISE FIGURE (dB)

8

7

6

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

1700 2500

RF FREQUENCY (MHz)

230021001900

MAX19995 toc08

NOISE FIGURE vs. RF FREQUENCY

12

11

10

9

NOISE FIGURE (dB)

8

7

6

1700 2500

VCC = 4.75V, 5.0V, 5.25V

RF FREQUENCY (MHz)

MAX19995 toc09

230021001900

MAX19995

Dual, SiGe, High-Linearity, 1700MHz to 2200MHz

Downconversion Mixer with LO Buffer/Switch

_______________________________________________________________________________________

9

Typical Operating Characteristics (continued)

(

Typical Application Circuit

, optimized for the DCS/PCS band, R1 = R4 = 806Ω, R2 = R5 = 2.32kΩ, VCC= +5.0V, PLO= 0dBm,

P

RF

= -5dBm, LO is low-side injected for a 190MHz IF, TC= +25°C, unless otherwise noted.)

2RF-2LO RESPONSE vs. RF FREQUENCY

90

80

70

2RF-2LO RESPONSE (dBc)

60

50

1700 2500

TC = +85°C

TC = -30°C

RF FREQUENCY (MHz)

3RF-3LO RESPONSE vs. RF FREQUENCY

95

85

2RF-2LO RESPONSE vs. RF FREQUENCY

TC = +25°C

PRF = -5dBm

230021001900

90

MAX19995 toc10

80

70

2RF-2LO RESPONSE (dBc)

60

50

1700 2500

PLO = -3dBm

PLO = 0dBm

RF FREQUENCY (MHz)

PRF = -5dBm

PLO = +3dBm

230021001900

3RF-3LO RESPONSE vs. RF FREQUENCY

MAX19995 toc13

95

85

PRF = -5dBm

PRF = -5dBm

TC = +25°C

2RF-2LO RESPONSE vs. RF FREQUENCY

90

MAX19995 toc11

80

70

2RF-2LO RESPONSE (dBc)

60

50

1700 2500

3RF-3LO RESPONSE vs. RF FREQUENCY

95

MAX19995 toc14

85

PRF = -5dBm

MAX19995 toc12

VCC = 4.75V, 5.0V, 5.25V

230021001900

RF FREQUENCY (MHz)

PRF = -5dBm

MAX19995 toc15

VCC = 5.25V

TC = +85°C

75

3RF-3LO RESPONSE (dBc)

65

TC = -30°C

55

1700 2500

RF FREQUENCY (MHz)

INPUT P

15

14

13

(dBm)

1dB

12

INPUT P

11

TC = -30°C

10

1700 2500

vs. RF FREQUENCY

1dB

TC = +85°C

TC = +25°C

RF FREQUENCY (MHz)

230021001900

230021001900

75

3RF-3LO RESPONSE (dBc)

65

55

1700 2500

15

MAX19995 toc16

14

13

(dBm)

1dB

12

INPUT P

11

10

1700 2500

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

RF FREQUENCY (MHz)

INPUT P

vs. RF FREQUENCY

1dB

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

RF FREQUENCY (MHz)

75

3RF-3LO RESPONSE (dBc)

VCC = 4.75V

65

230021001900

55

1700 2500

INPUT P

15

MAX19995 toc17

14

VCC = 5.0V

13

(dBm)

1dB

12

INPUT P

11

230021001900

10

1700 2500

VCC = 5.0V

RF FREQUENCY (MHz)

vs. RF FREQUENCY

1dB

VCC = 5.25V

VCC = 4.75V

RF FREQUENCY (MHz)

230021001900

MAX19995 toc18

230021001900