MAX19997AETX+T【PDF 1/35 页】IC DOWNCONVERTER 2CH 36TQFN

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MAX19997A

Dual, SiGe High-Linearity, 1800MHz to 2900MHz

Downconversion Mixer with LO Buffer

General Description

The MAX19997A dual downconversion mixer is a versa-

tile, highly integrated diversity downconverter that pro-

vides high linearity and low noise figure for a multitude of

1800MHz to 2900MHz base-station applications. The

MAX19997A fully supports both low- and high-side LO

injection architectures for the 2300MHz to 2900MHz

WiMAX ?, LTE, WCS, and MMDS bands, providing

8.7dB gain, +24dBm input IP3, and 10.3dB NF in the

low-side configuration, and 8.7dB gain, +24dBm input

IP3, and 10.4dB NF in the high-side configuration. High-

side LO injection architectures can be further extended

down to 1800MHz with the addition of one tuning ele-

ment (a shunt inductor) on each RF port.

The device integrates baluns in the RF and LO ports,

an LO buffer, two double-balanced mixers, and a pair

of differential IF output amplifiers. The MAX19997A

requires a typical LO drive of 0dBm and a supply cur-

rent guaranteed below 420mA to achieve the targeted

linearity performance.

The MAX19997A is available in a compact 6mm x 6mm,

36-pin TQFN lead-free package with an exposed pad.

Electrical performance is guaranteed over the extended

temperature range, from T C = -40°C to +100°C.

Applications

2.3GHz WCS Base Stations

2.5GHz WiMAX and LTE Base Stations

2.7GHz MMDS Base Stations

UMTS/WCDMA and cdma2000 ? 3G 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 1800MHz to 2900MHz RF Frequency Range

o 1950MHz to 3400MHz LO Frequency Range

o 50MHz to 550MHz IF Frequency Range

o Supports Both Low-Side and High-Side LO

Injection

o 8.7dB Conversion Gain

o +24dBm Input IP3

o 10.3dB Noise Figure

o +11.3dBm Input 1dB Compression Point

o 70dBc Typical 2 x 2 Spurious Rejection at

P RF = -10dBm

o Dual Channels Ideal for Diversity Receiver

Applications

o Integrated LO Buffer

o Integrated LO and RF Baluns for Single-Ended

Inputs

o Low -3dBm to +3dBm LO Drive

o Pin Compatible with the MAX19999 3000MHz to

4000MHz Mixer

o Pin Similar to the MAX9995 and MAX19995/

MAX19995A 1700MHz to 2200MHz Mixers and the

MAX9985 and MAX19985A 700MHz to 1000MHz

Mixers

o 42dB Channel-to-Channel Isolation

o Single 5.0V or 3.3V Supply

o External Current-Setting Resistors Provide Option

for Operating Device in Reduced-Power/Reduced-

Performance Mode

Ordering Information

PART

MAX19997AETX+

MAX19997AETX+T

TEMP RANGE

-40°C to +100°C

PIN-PACKAGE

36 TQFN-EP*

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

*EP = Exposed pad.

T = Tape and reel.

WiMAX is a trademark of WiMAX Forum.

cdma2000 is a registered trademark of Telecommunications

Industry Association.

Pin Configuration/Functional Block Diagram appears at

end of data sheet.

For pricing, delivery, and ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

19-4288; Rev 4; 1/13

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