Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsLinear ICsMAX2022ETX+

MAX2022 High-Dynamic-Range, Direct Up/

Downconversion 1500MHz to 3000MHz

Quadrature Modulator/Demodulator

General Description

The MAX2022 low-noise, high-linearity, direct conversion

quadrature modulator/demodulator is designed for single

and multicarrier 1500MHz to 3000MHz UMTS/WCDMA,

LTE/TD-LTE, cdma2000

, and DCS/PCS base-station

applications. Direct conversion architectures are advanta-

geous since they significantly reduce transmitter or receiv-

er cost, part count, and power consumption as compared

to traditional IF-based double conversion systems.

In addition to offering excellent linearity and noise perfor-

mance, the MAX2022 also yields a high level of component

integration. This device includes two matched passive mix-

ers for modulating or demodulating in-phase and quadra-

ture signals, three LO mixer amplifier drivers, and an LO

quadrature splitter. On-chip baluns are also integrated

to allow for single-ended RF and LO connections. As an

added feature, the baseband inputs have been matched

to allow for direct interfacing to the transmit DAC, thereby

eliminating the need for costly I/Q buffer amplifiers.

The MAX2022 operates from a single +5V supply. It is

available in a compact 36-pin TQFN package (6mm x

6mm) with an exposed paddle. Electrical performance is

guaranteed over the extended -40°C to +85°C tempera-

ture range.

Applications

● SingleandMulticarrierWCDMA/UMTSand

LTE/TD-LTE Base Stations

● SingleandMulticarriercdmaOne™andcdma2000

Base Stations

● SingleandMulticarrierDCS1800/PCS1900EDGE

Base Stations

● PHS/PASBaseStations

● PredistortionTransmitters

● FixedBroadbandWirelessAccess

● WirelessLocalLoop

● PrivateMobileRadio

● MilitarySystems

● MicrowaveLinks

● DigitalandSpread-SpectrumCommunicationSystems

Benets and Features

● 1500MHzto3000MHzRFFrequencyRange

● 1500MHzto3000MHzLOFrequencyRange

● ScalablePower:ExternalCurrent-SettingResistors

Provide Option for Operating Device in Reduced-

Power/Reduced-Performance Mode

● 36-Pin,6mmx6mmTQFNProvidesHighIsolationin

a Small Package

Modulator Operation (2140MHz):

● MeetsFour-CarrierWCDMA65dBcACLR

● 23.3dBmTypicalOIP3

● 51.5dBmTypicalOIP2

● 45.7dBcTypicalSidebandSuppression

● -40dBmTypicalLOLeakage

● -173.2dBm/HzTypicalOutputNoise,Eliminatingthe

Need for an RF Output Filter

● BroadbandBasebandInput

● DC-CoupledInputProvidesforDirectLaunchDAC

Interface, Eliminating the Need for Costly I/Q

Buffer Amplifiers

Demodulator Operation (1890MHz):

● 39dBmTypicalIIP3

● 58dBmTypicalIIP2

● 9.2dBTypicalConversionLoss

● 9.4dBTypicalNF

Ordering Information appears at end of data sheet.

For related parts and recommended products to use with this part, refer

to www.maximintegrated.com/MAX2022.related.

cdma2000 is a registered trademark of Telecommunications

Industry Association.

cdmaOne is a trademark of CDMA Development Group.

WCDMA, ACLR, ALTCLR and Noise vs. RF Output

Power at 2140MHz for Single, Two, and Four Carriers

19-3572; Rev 3; 7/13

EVALUATION KIT AVAILABLE

RF OUTPUT POWER PER CARRIER (dBm)

ACLR AND ALT CLR (dBc)

-10-20-30-40

-78

-76

-74

-72

-70

-68

-66

-64

-62

-60

-80

NOISE FLOOR (dBm/Hz)

-165

-155

-145

-135

-125

-175

-50 0

4C ADJ

4C ALT

2C ADJ 1C ADJ

2C ALT

1C ALT

NOISE FLOOR

Summary of content (26 pages)

PAGE 1
EVALUATION KIT AVAILABLE The MAX2022 low-noise, high-linearity, direct conversion quadrature modulator/demodulator is designed for single and multicarrier 1500MHz to 3000MHz UMTS/WCDMA, LTE/TD-LTE, cdma2000®, and DCS/PCS base-station applications. Direct conversion architectures are advantageous since they significantly reduce transmitter or receiver cost, part count, and power consumption as compared to traditional IF-based double conversion systems.
PAGE 2
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Absolute Maximum Ratings VCC_ to GND........................................................-0.3V to +5.5V BBIP, BBIN, BBQP, BBQN to GND........... -2.5V to (VCC + 0.3V) LO, RF to GND Maximum Current......................................50mA RF Input Power...............................................................+20dBm Baseband Differential I/Q Input Power............................
PAGE 3
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator AC Electrical Characteristics (Modulator) (MAX2022 Typical Application Circuit, VCC = 4.75V to 5.25V, VGND = 0V, I/Q differential inputs driven from a 100Ω differential DC-coupled source, 0V common-mode input, PLO = 0dBm, fLO = 1900MHz to 2200MHz, 50Ω LO and RF system impedance, R1 = 432Ω, R2 = 562Ω, R3 = 301Ω, TC = -40°C to +85°C.
PAGE 4
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator AC Electrical Characteristics (Modulator) (continued) (MAX2022 Typical Application Circuit, VCC = 4.75V to 5.25V, VGND = 0V, I/Q differential inputs driven from a 100Ω differential DC-coupled source, 0V common-mode input, PLO = 0dBm, fLO = 1900MHz to 2200MHz, 50Ω LO and RF system impedance, R1 = 432Ω, R2 = 562Ω, R3 = 301Ω, TC = -40°C to +85°C.
PAGE 5
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator AC Electrical Characteristics (Demodulator, fLO = 2855MHz) (MAX2022 Typical Application Circuit when operated as a demodulator. I/Q outputs are recombined using network shown in Figure 5. Losses of combining network not included in measurements. RF and LO ports are driven from 50Ω sources.
PAGE 6
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Typical Operating Characteristics (MAX2022 Typical Application Circuit, 50Ω LO input, R1 = 432Ω, R2 = 562Ω, R3 = 301Ω, VCC = 5V, PLO = 0dBm, fLO = 2140MHz, VI = VQ = 109mVP-P differential, fIQ = 1MHz, I/Q differential inputs driven from a 100Ω differential DC-coupled source, common-mode input from 0V, TC = +25°C, unless otherwise noted.
PAGE 7
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Typical Operating Characteristics (continued) (MAX2022 Typical Application Circuit, 50Ω LO input, R1 = 432Ω, R2 = 562Ω, R3 = 301Ω, VCC = 5V, PLO = 0dBm, fLO = 2140MHz, VI = VQ = 109mVP-P differential, fIQ = 1MHz, I/Q differential inputs driven from a 100Ω differential DC-coupled source, common-mode input from 0V, TC = +25°C, unless otherwise noted.) MODULATOR 30 20 10 1.5 1.9 2.1 2.
PAGE 8
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Typical Operating Characteristics (continued) (MAX2022 Typical Application Circuit, 50Ω LO input, R1 = 432Ω, R2 = 562Ω, R3 = 301Ω, VCC = 5V, PLO = 0dBm, fLO = 2140MHz, VI = VQ = 109mVP-P differential, fIQ = 1MHz, I/Q differential inputs driven from a 100Ω differential DC-coupled source, common-mode input from 0V, TC = +25°C, unless otherwise noted.) MODULATOR VCC = 4.75V 5 1.9 2.1 2.3 0 2.
PAGE 9
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Typical Operating Characteristics (continued) (MAX2022 Typical Application Circuit, 50Ω LO input, R1 = 432Ω, R2 = 562Ω, R3 = 301Ω, VCC = 5V, PLO = 0dBm, fLO = 2140MHz, VI = VQ = 109mVP-P differential, fIQ = 1MHz, I/Q differential inputs driven from a 100Ω differential DC-coupled source, common-mode input from 0V, TC = +25°C, unless otherwise noted.
PAGE 10
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Typical Operating Characteristics (continued) (MAX2022 Typical Application Circuit, 50Ω LO input, R1 = 432Ω, R2 = 562Ω, R3 = 301Ω, VCC = 5V, PLO = 0dBm, fLO = 2140MHz, VI = VQ = 109mVP-P differential, fIQ = 1MHz, I/Q differential inputs driven from a 100Ω differential DC-coupled source, common-mode input from 0V, TC = +25°C, unless otherwise noted.) -10 VCC = 4.75V, 5.0V, 5.
PAGE 11
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Typical Operating Characteristics (continued) (MAX2022 Typical Application Circuit, 50Ω LO input, R1 = 432Ω, R2 = 562Ω, R3 = 301Ω, VCC = 5V, PLO = 0dBm, fLO = 2140MHz, VI = VQ = 109mVP-P differential, fIQ = 1MHz, I/Q differential inputs driven from a 100Ω differential DC-coupled source, common-mode input from 0V, TC = +25°C, unless otherwise noted.) 80 75 VCC = 5.0V VCC = 4.
PAGE 12
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Typical Operating Characteristics (MAX2022 Typical Application Circuit, RF and LO ports tuned for 1500MHz to 2400MHz as noted in Table 1. I/Q outputs are recombined using network shown in Figure 5. Losses of combining network not included in measurements. VCC = 5.0V, GND = 0V, PRF = 0dBm, PLO = 0dBm, fIF = 20MHz, fLO > fRF, intermodulation delta frequency = 1.
PAGE 13
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Typical Operating Characteristics (continued) (MAX2022 Typical Application Circuit, RF and LO ports tuned for 1500MHz to 2400MHz as noted in Table 1. I/Q outputs are recombined using network shown in Figure 5. Losses of combining network not included in measurements. VCC = 5.0V, GND = 0V, PRF = 0dBm, PLO = 0dBm, fIF = 20MHz, fLO > fRF, intermodulation delta frequency = 1.
PAGE 14
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Typical Operating Characteristics (MAX2022 Typical Application Circuit, RF and LO ports tuned for 2400MHz to 3000MHz as noted in Table 1. I/Q outputs are recombined using network shown in Figure 5. Losses of combining network not included in measurements. VCC = 5.0V, GND = 0V, PRF = 0dBm, PLO = 0dBm, fIF = 20MHz, fLO > fRF, intermodulation delta frequency = 1.
PAGE 15
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Typical Operating Characteristics (continued) (MAX2022 Typical Operating Characteristics, RF and LO ports tuned for 2400MHz to 3000MHz as noted in Table 1. I/Q outputs are recombined using network shown in Figure 5. Losses of combining network not included in measurements. VCC = 5.0V, GND = 0V, PRF = 0dBm, PLO = 0dBm, fIF = 20MHz, fLO > fRF, intermodulation delta frequency = 1.
PAGE 16
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Typical Operating Characteristics (continued) (MAX2022 Typical Application Circuit, RF and LO ports tuned for 2400MHz to 3000MHz as noted in Table 1. I/Q outputs are recombined using network shown in Figure 5. Losses of combining network not included in measurements. VCC = 5.0V, GND = 0V, PRF = 0dBm, PLO = 0dBm, fLO = 2855MHz, fIF = fLO - fRF, intermodulation delta frequency = 1.
PAGE 17
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Pin Configuration/Functional Diagram GND VCCLOQ1 GND VCCLOQ2 GND GND GND 36 35 34 33 32 31 30 29 28 1 RBIASLO1 6 N.C.
PAGE 18
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Pin Description (continued) PIN NAME 21 BBIN FUNCTION 23 RF 25 BBQN Baseband Quadrature Negative Input 26 BBQP Baseband Quadrature Positive Input Baseband In-Phase Negative Input RF Port 31 VCCLOQ2 Q-Channel 2nd LO Amplifier Supply Voltage 33 VCCLOQ1 Q-Channel 1st LO Amplifier Supply Voltage — EP Exposed Ground Paddle.
PAGE 19
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Modulator Baseband I/Q Input Drive The MAX2022 I and Q baseband inputs should be driven differentially for best performance. The baseband inputs have a 50Ω differential input impedance. The optimum source impedance for the I and Q inputs is 100Ω differential. This source impedance will achieve the optimal signal transfer to the I and Q inputs, and the optimum output RF impedance match.
PAGE 20
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator RF Output illustrates a complete transmitter lineup for a multicarrier WCDMA transmitter in the UMTS band. The MAX2022 utilizes an internal passive mixer architecture. This enables a very low noise floor of -173.2dBm/Hz for low-level signals, below about -20dBm output power level.
PAGE 21
MAX2022 The DAC outputs must be filtered by baseband filters to remove the image frequency signal components. The baseband signals for four-carrier operation cover DC to 10MHz. The image frequency appears at 481MHz to 491MHz. This very large frequency spread allows the use of very low-complexity lowpass filters, with excellent in-band gain and phase performance.
PAGE 22
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator RF Demodulator The MAX2022 can also be used as an RF demodulator (see Figure 4), downconverting an RF input signal directly to baseband. The single-ended RF input accepts signals from 1500MHz to 3000MHz. The passive mixer architecture produces a conversion loss of typically 9.2dB and a noise figure of 9.4dB. The downconverter is optimized for high linearity of typically +39dBm IIP3.
PAGE 23
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Ld Ra Ca MAX2022 I/Q OUTPUTS Rb La Lb Cb Lc Cc Cd Ce EXTERNAL STAGE Figure 6. Baseband Port Typical Filtering and DC Return Network Resistor Rb provides a DC return to set the commonmode voltage. In this case, due to the on-chip circuitry, the voltage is approximately 0V DC. It can also be used to reduce the load impedance of the next stage.
PAGE 24
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Table 1. Component List Referring to the Typical Application Circuit COMPONENT VALUE C1, C6, C7, C10, C13 22pF 22pF ±5%, 50V C0G ceramic capacitors (0402) C2, C5, C8, C11, C12 0.1µF 0.1µF ±10%, 16V X7R ceramic capacitors (0603) C3 C9 C16 22pF 22pF ±5%, 50V C0G ceramic capacitor (0402), fLO = 1500MHz to 2400MHz 6.8pF 6.8pF ±5%, 50V C0G ceramic capacitor (0402), fLO = 2400MHz to 3000MHz 1.
PAGE 25
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Typical Application Circuit 36 C1 22pF VCCLOA C2 0.1µF C3 LO LO GND RBIASLO1 R1 432Ω N.C. RBIASLO2 R2 562Ω GND 32 31 1 2 GND 30 GND 29 GND 28 27 MAX2022 BIAS LO3 26 3 25 90° 0° 4 24 5 22 7 21 BIAS LO2 8 20 9 VCC 19 EP 10 C5 0.1µF 11 GND 12 GND C6 22pF 13 14 GND 15 16 17 GND GND C7 22pF GND BBQP BBQN GND Q+ Q- C9 C16 RF 23 RF ∑ BIAS LO1 6 GND www.
PAGE 26
MAX2022 High-Dynamic-Range, Direct Up/ Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator Revision History REVISION NUMBER REVISION DATE PAGES CHANGED 0 4/05 Initial release 1 9/12 Updated the Benefits and Features, Applications, Absolute Maximum Ratings, and Ordering Information; added new electrical characteristics tables, figures, and sections 1–19 2 3/13 Corrected pin 15 name from VCCLOI1 to VCCLOI2 in the Pin Configuration/Functional Diagram and Pin Description 11, 12 3