Rainbow Electronics MAX19996 User Manual

General Description

The MAX19996 single, high-linearity downconversion mixer provides 8.7dB conversion gain, +24.5dBm IIP3, and 9.6dB noise figure for 2000MHz to 3000MHz WCS, LTE, WiMAX™, and MMDS wireless infrastructure applications. With an 1800MHz to 2550MHz LO frequency range, this particular mixer is ideal for low-side LO injection receiver architectures. High-side LO injection is supported by the MAX19996A, which is pin-for-pin and functionally compatible with the MAX19996.

In addition to offering excellent linearity and noise performance, the MAX19996 also yields a high level of component integration. This device includes a double-balanced passive mixer core, an IF amplifier, and an LO buffer. On-chip baluns are also integrated to allow for singleended RF and LO inputs. The MAX19996 requires a nominal LO drive of 0dBm, and supply current is typically 230mA at V

= +5.0V or 149.5mA at VCC= +3.3V.

The MAX19996 is pin compatible with the MAX19996A 2300MHz to 3900MHz mixer. The device is also pin similar with the MAX9984/MAX9986 400MHz to 1000MHz mixers and the MAX9993/MAX9994/MAX9996 1700MHz to 2200MHz mixers, making this entire family of downconverters ideal for applications where a common PCB layout is used for multiple frequency bands.

The MAX19996 is available in a compact 5mm x 5mm, 20-pin thin QFN lead-free package with an exposed pad. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.

Applications

2.3GHz WCS Base Stations

2.5GHz WiMAX and LTE Base Stations

2.7GHz MMDS Base Stations

Fixed Broadband Wireless Access

Wireless Local Loop

Private Mobile Radios

Military Systems

Features

♦ 2000MHz to 3000MHz RF Frequency Range

♦ 1800MHz to 2550MHz LO Frequency Range

♦ 50MHz to 500MHz IF Frequency Range

♦ 8.7dB Typical Conversion Gain

♦ 9.6dB Typical Noise Figure

♦ +24.5dBm Typical Input IP3

♦ +11dBm Typical Input 1dB Compression Point

♦ 69dBc Typical 2RF-2LO Spurious Rejection at

= -10dBm

♦ Integrated LO Buffer

♦ Integrated RF and LO Baluns for Single-Ended

Inputs

♦ Low -3dBm to +3dBm LO Drive

♦ Pin Compatible with the MAX19996A 2300MHz to

3900MHz Mixer

♦ Pin Similar with the MAX9993/MAX9994/

MAX9996 1700MHz to 2200MHz Mixers and MAX9984/MAX9986 400MHz to 1000MHz Mixers

♦ Single +5.0V or +3.3V Supply

♦ External Current-Setting Resistors Provide Option

for Operating Device in Reduced-Power/ReducedPerformance Mode

MAX19996

SiGe High-Linearity, 2000MHz to 3000MHz

Downconversion Mixer with LO Buffer

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Maxim Integrated Products

Ordering Information

19-4177; Rev 0; 7/08

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.

PART TEMP RANGE PIN-PACKAGE

MAX19996ETP+ -40°C to +85°C 20 Thin QFN-EP*

MAX19996ETP+T -40°C to +85°C 20 Thin QFN-EP*

Denotes a lead-free/RoHS-compliant package.

EP = Exposed pad.

T = Tape and reel.

Pin Configuration appears at end of data sheet.

WiMAX is a trademark of WiMAX Forum.

MAX19996

SiGe High-Linearity, 2000MHz to 3000MHz Downconversion Mixer with LO Buffer

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

+3.3V SUPPLY DC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

, VCC= +3.0V to +3.6V, no input AC signals. TC= -40°C to +85°C, unless otherwise noted. Typical values

are at V

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

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.

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

IF+, IF-, LOBIAS, LO, IFBIAS,

LEXT to GND ..........................................-0.3V to (V

+ 0.3V)

RF, LO Input Power ........................................................+12dBm

RF, LO Current

(RF and LO is DC shorted to GND through a balun) ......50mA

Continuous Power Dissipation (Note 1) ..............................5.0W

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

(Notes 1, 3)................................................................13°C/W

Operating Case Temperature

Range (Note 4)........................................T

= -40°C to +85°C

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

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

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

+5.0V SUPPLY DC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

, VCC= +4.75V to +5.25V, no input AC signals. TC= -40°C to +85°C, unless otherwise noted. Typical val-

ues are at V

= +5.0V, TC= +25°C, all parameters are production tested.) (Note 6)

RECOMMENDED AC OPERATING CONDITIONS

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

= 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: T

is the temperature on the exposed pad of the package. TAis the ambient temperature of the device and PCB.

Supply Voltage V

Supply Current I

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

4.75 5 5.25 V

230 245 mA

Supply Voltage V

Supply Current I

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Total supply current, VCC = +3.3V 149.5 mA

3.0 3.3 3.6 V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

RF Frequency f

LO Frequency f

IF Frequency f

LO Drive Level P

(Note 7) 2000 3000 MHz

(Note 7) 1800 2550 MHz

U si ng M i ni - C i r cui ts TC 4- 1W- 17 4:1 tr ansfor m er as d efi ned i n the Typ i cal Ap p l i cati on C i r cui t, IF m atchi ng com p onents affect the IF fr eq uency r ang e ( N ote 7)

U si ng al ter nati ve M i ni - C i r cui ts TC 4- 1W- 7A 4:1 transformer, IF matching components affect the IF frequency range (Note 7)

100 500

50 250

-3 +3 dBm

MHz

MAX19996

SiGe High-Linearity, 2000MHz to 3000MHz

Downconversion Mixer with LO Buffer

_______________________________________________________________________________________ 3

+5.0V SUPPLY AC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

, VCC= +4.75V to +5.25V, RF and LO ports are driven from 50Ω sources, PLO= -3dBm to +3dBm,

= -5dBm, fRF= 2300MHz to 2800MHz, fLO= 2000MHz to 2500MHz, fIF= 300MHz, fRF> fLO, TC= -40°C to +85°C. Typical val-

ues are at V

= +5.0V, PRF= -5dBm, PLO= 0dBm, fRF= 2500MHz, fLO= 2200MHz, fIF= 300MHz, TC= +25°C, all parameters are

guaranteed by design and characterization, unless otherwise noted.) (Note 6)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Conversion Power Gain G

Conversion Power Gain Variation vs. Frequency

Conversion Power Gain Temperature Coefficient

Input 1dB Compression Point IP

Third-Order Input Intercept Point IIP3

Third-Order Input Intercept Point Variation Over Temperature

Noise Figure NF

Noise Figure Temperature Coefficient

Noise Figure Under Blocking Condition

2RF-2LO Spur Rejection 2 x 2

3RF-3LO Spur Rejection 3 x 3

RF Input Return Loss

LO Input Return Loss

TC = +25°C (Note 5) 8.1 8.7 9.3 dB

∆G

1dB

fRF = 2300MHz to 2800MHz for any

100MHz band

TC = -40°C to +85°C -0.012 dB/°C

0.1 dB

TC = +25°C (Note 8) 10 11 dBm

fRF = 2500MHz, TC = +25°C (Note 8) 10.4 11 dBm

- f

RF1

= 1MHz, P

RF2

= +25°C (Note 5)

= 2300MHz to 2800MHz, fIF = 300MHz,

- f

= 1MHz, P

RF2

= -40°C to +85°C

RF1

= P

= -5dBm,

RF2

= -5dBm,

RF2

22 24.5 dBm

±0.5 dB

fRF = 2300MHz to 2700MHz, fIF = 300MHz, single sideband, no blockers present (Note 9)

SSB

= 2500M H z, f

R F

= +5.0V, TC = +25°C, single sideband,

= 300M H z, P

I F

= 0d Bm ,

L O

9.6 12

9.6 10.5

no blockers present (Note 9)

fRF = 2000MHz to 3000MHz, single

sideband, no blockers present,

= -40°C to +85°C (Note 9)

+8dBm blocker tone applied to RF port, f = 2300MHz, fLO = 2110MHz, f

2400MHz, P T

= +25°C (Note 9)

= 2300MHz to

2700MHz, f

= -3dBm, VCC = +5.0V,

2000MHz to 2400MHz, f

= f

SPUR

= 2300MHz to

2700MHz, f

+ 150MHz

= 2000MHz to 2400MHz, f

= f

SPUR

+ 100MHz

LO on and IF terminated into a matched impedance

RF and IF terminated into a matched impedance

0.0183 dB/°C

BLOCKER

20.8 25 dB

PRF = -10dBm 60 69

= -5dBm

(Note 5)

55 64

PRF = -10dBm 70 78

= -5dBm

(Note 5)

60 68

18 dB

20 dB

dBc

MAX19996

SiGe High-Linearity, 2000MHz to 3000MHz Downconversion Mixer with LO Buffer

4 _______________________________________________________________________________________

+5.0V SUPPLY AC ELECTRICAL CHARACTERISTICS (continued)

(

Typical Application Circuit

, VCC= +4.75V to +5.25V, RF and LO ports are driven from 50Ω sources, PLO= -3dBm to +3dBm,

= -5dBm, fRF= 2300MHz to 2800MHz, fLO= 2000MHz to 2500MHz, fIF= 300MHz, fRF> fLO, TC= -40°C to +85°C. Typical val-

ues are at V

= +5.0V, PRF= -5dBm, PLO= 0dBm, fRF= 2500MHz, fLO= 2200MHz, fIF= 300MHz, TC= +25°C, all parameters are

guaranteed by design and characterization, unless otherwise noted.) (Note 6)

+3.3V SUPPLY AC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

, RF and LO ports are driven from 50Ω sources, Typical values are at VCC= +3.3V, PRF= -5dBm,

= 0dBm, fRF= 2500MHz, fLO= 2200MHz, fIF= 300MHz, TC= +25°C, unless otherwise noted.) (Note 6)

IF Output Impedance Z

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Nominal differential impedance at the IC’s

IF outputs

200 Ω

IF Output Return Loss

Minimum RF-to-IF Isolation

Maximum LO Leakage at RF Port fLO = 1900MHz to 2500MHz, PLO = +3dBm -22.7 dBm

M axi m um 2LO Leakag e at RF P or tf

Maximum LO Leakage at IF Port

RF terminated into 50Ω, LO driven by 50Ω source, IF transformed to 50Ω using external components shown in the Typical Application Circuit. See the IF Port Return Loss vs. IF Frequency graph in the

Typical Operating Characteristics for

performance vs. inductor values

= 2300MHz to 2700MHz, PLO = +3dBm

(Note 5)

= 1900MHz to 2500MHz, P

(Note 5)

fIF = 450MHz, L1 = L2 = 120nH

fIF = 350MHz, L1 = L2 = 270nH

= 300MHz,

L1 = L2 = 470nH

= +3dBm -21 dBm

= +3dBm

34 dB

-27.5 dBm

Conversion Power Gain G

Conversion Power Gain Variation vs. Frequency

Gain Variation Over Temperature TC

Input 1dB Compression Point IP

Third-Order Input Intercept Point IIP3

Third-Order Input Intercept Variation Over Temperature

Noise Figure NF

Noise Figure Temperature Coefficient

2RF-2LO Spur Rejection 2 x 2

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

8.6 dB

0.1 dB

19.8 dBm

±0.5 dB

0.017 dB/°C

∆G

1dB

SSB

fRF = 2300MHz to 2800MHz for any 100MHz band

TC = -40°C to +85°C -0.012 dB/°C

(Note 8) 7.5 dBm

= 2500MHz, f

RF1

2200MHz, P

= 2500M H z, f

RF1

2200M H z, P

S i ng l e si d eb and , no b l ocker s p r esent ( N ote 9) 9.6 dB

Single sideband, no blockers present, T

= -40°C to +85°C (Note 9)

PRF = -10dBm 65.9

= -5dBm 60.9

RF1

= 2501MHz, fLO =

RF2

= P

= -5dBm

RF2

= 2501M H z, fLO =

RF2

= P

= - 5d Bm , T

RF2

= + 25°C

dBc

MAX19996

SiGe High-Linearity, 2000MHz to 3000MHz

Downconversion Mixer with LO Buffer

_______________________________________________________________________________________ 5

Note 5: 100% production tested for functional performance. Note 6: All limits reflect losses of external components, including a 0.8dB loss at f

= 300MHz due to the 4:1 impedance trans-

former. Output measurements were taken at IF outputs of the

Typical Application Circuit

Note 7: Not production tested. Operation outside this range is possible, but with degraded performance of some parameters. See

the

Typical Operating Characteristics

Note 8: Maximum reliable continuous input power applied to the RF or IF port of this device is +12dBm from a 50Ω source. Note 9: Measured with external LO source noise filtered so that 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

+3.3V SUPPLY AC ELECTRICAL CHARACTERISTICS (continued)

(

Typical Application Circuit

, RF and LO ports are driven from 50Ω sources, Typical values are at VCC= +3.3V, PRF= -5dBm,

= 0dBm, fRF= 2500MHz, fLO= 2200MHz, fIF= 300MHz, TC= +25°C, unless otherwise noted.) (Note 6)

3RF-3LO Spur Rejection 3 x 3

RF Input Return Loss

LO Input Return Loss

IF Output Impedance Z

IF Output Return Loss

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

= -10dBm 67.9

= -5dBm 57.9

LO on and IF terminated into a matched impedance

RF and IF terminated into a matched impedance

Nominal differential impedance at the IC’s

IF outputs

RF ter m i nated i nto 50Ω , LO d r i ven b y 50Ω sour ce, IF tr ansfor m ed to 50Ω usi ng exter nal com p onents show n i n the

Typ i cal Ap p l i cati on C i r cui t. S ee the IF P or t Retur n Loss vs. IF

Fr eq uency g r ap h i n the

Typ i cal Op er ati ng C har acter i sti cs for

p er for m ance vs. i nd uctor val ues.

fIF = 450MHz, L1 = L2 = 120nH

fIF = 350MHz, L1 = L2 = 270nH

= 300MHz,

L1 = L2 = 470nH

dBc

16 dB

16.7 dB

200 Ω

Minimum RF-to-IF Isolation fRF = 2300MHz to 2700MHz, PLO = +3dBm 33 dB

Maximum LO Leakage at RF Port fLO = 1900MHz to 2500MHz, PLO = +3dBm -26.6 dBm

M axi m um 2LO Leakag e at RF P or tf

Maximum LO Leakage at IF Port fLO = 1900MHz to 2500MHz, PLO = +3dBm -21.9 dBm

= 1900MHz to 2500MHz, PLO = +3dBm -28.8 dBm

MAX19996

SiGe High-Linearity, 2000MHz to 3000MHz Downconversion Mixer with LO Buffer

6 _______________________________________________________________________________________

Typical Operating Characteristics

(

Typical Application Circuit

, VCC= +5.0V, PLO= 0dBm, PRF= -5dBm, LO is low-side injected for a 300MHz IF, TC = +25°C, unless

otherwise noted.)

CONVERSION GAIN vs. RF FREQUENCY

CONVERSION GAIN (dB)

2000 2200 2400 2600 2800 3000

TC = -40°C

TC = +85°C

RF FREQUENCY (MHz)

INPUT IP3 vs. RF FREQUENCY

INPUT IP3 (dBm)

TC = +85°C

TC = -40°C

TC = +25°C

PRF = -5dBm/TONE

TC = +25°C

MAX19996 toc01

CONVERSION GAIN (dB)

MAX19996 toc04

INPUT IP3 (dBm)

CONVERSION GAIN vs. RF FREQUENCY

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

2000 2200 2400 2600 2800 3000

RF FREQUENCY (MHz)

INPUT IP3 vs. RF FREQUENCY

PRF = -5dBm/TONE

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

MAX19996 toc02

CONVERSION GAIN (dB)

MAX19996 toc05

INPUT IP3 (dBm)

CONVERSION GAIN vs. RF FREQUENCY

MAX19996 toc03

VCC = 4.75V, 5.0V, 5.25V

2000 2200 2400 2600 2800 3000

RF FREQUENCY (MHz)

INPUT IP3 vs. RF FREQUENCY

PRF = -5dBm/TONE

MAX19996 toc06

VCC = 4.75V, 5.0V, 5.25V

MAX19996 toc08

NOISE FIGURE (dB)

2000 2200 2400 2600 2800 3000

RF FREQUENCY (MHz)

NOISE FIGURE vs. RF FREQUENCY

VCC = 4.75V, 5.0V, 5.25V

1800 2000 2200 2400 2600 2800 3000

RF FREQUENCY (MHz)

2000 2200 2400 2600 2800 3000

RF FREQUENCY (MHz)

NOISE FIGURE vs. RF FREQUENCY

TC = +85°C

NOISE FIGURE (dB)

TC = -40°C

1800 2000 2200 2400 2600 2800 3000

RF FREQUENCY (MHz)

TC = +25°C

MAX19996 toc07

NOISE FIGURE (dB)

2000 2200 2400 2600 2800 3000

RF FREQUENCY (MHz)

NOISE FIGURE vs. RF FREQUENCY

1800 2000 2200 2400 2600 2800 3000

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

RF FREQUENCY (MHz)

MAX19996 toc09

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