MAX19999ETX+T【PDF 1/19 页】IC DOWNCONVERTER 2CH 36TQFN

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Sheet目录471

[1页]2页 3页 4页 5页

19-4293; Rev 0; 10/08

Dual, SiGe High-Linearity, 3000MHz to

4000MHz Downconversion Mixer with LO Buffer

General Description

Features

The MAX19999 dual-channel downconverter provides

8.3dB of conversion gain, +24dBm input IP3, +11.4dBm

1dB input compression point, and a noise figure of

10.5dB for 3000MHz to 4000MHz WiMAX? and LTE

diversity receiver applications. With an optimized LO fre-

quency range of 2650MHz to 3700MHz, this mixer is

ideal for low-side LO injection architectures.

In addition to offering excellent linearity and noise per-

formance, the MAX19999 also yields a high level of

component integration. This device includes two dou-

ble-balanced passive mixer cores, two LO buffers, and

a pair of differential IF output amplifiers. Integrated on-

chip baluns allow for single-ended RF and LO inputs.

The MAX19999 requires a nominal LO drive of 0dBm

and a typical supply current of 388mA at V CC = +5.0V

or 279mA at V CC = +3.3V.

The MAX19999 is pin compatible with the MAX19997A

1800MHz to 2900MHz mixer and pin similar with the

MAX19985/MAX19985A and MAX19995/MAX19995A

series of 700MHz to 2200MHz mixers, making this

entire family of downconverters ideal for applications

where a common PCB layout is used across multiple

frequency bands.

The MAX19999 is available in a compact 6mm x 6mm,

36-pin thin QFN package with an exposed pad.

Electrical performance is guaranteed over the extended

temperature range, from T C = -40°C to +85°C.

Applications

3.5GHz WiMAX and LTE Base Stations

Fixed Broadband Wireless Access

Microwave Links

3000MHz to 4000MHz RF Frequency Range

2650MHz to 3700MHz LO Frequency Range

50MHz to 500MHz IF Frequency Range

8.3dB Conversion Gain

+24dBm Input IP3

10.5dB Noise Figure

+11.4dBm Input 1dB Compression Point

74dBc Typical 2 x 2 Spurious Rejection at

P RF = -10dBm

Dual Channels Ideal for Diversity Receiver

Applications

Integrated LO Buffer

Integrated LO and RF Baluns for Single-Ended

Inputs

Low -3dBm to +3dBm LO Drive

Pin Compatible with the MAX19997A 1800MHz to

2900MHz Mixer

Pin Similar to the MAX9995/MAX9995A and

MAX19995/MAX19995A 1700MHz to 2200MHz

Mixers and the MAX9985/MAX9985A and

MAX19985/MAX19985A 700MHz to 1000MHz

Mixers

39dB Channel-to-Channel Isolation

Single +5.0V or +3.3V Supply

External Current-Setting Resistors Provide Option

for Operating Device in Reduced-Power/Reduced-

Performance Mode

Ordering Information

Wireless Local Loop

Private Mobile Radios

PART

MAX19999ETX+

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

36 Thin QFN-EP*

Military Systems

Pin Configuration/Functional Diagram and Typical

Application Circuit appear at end of data sheet.

WiMAX is a trademark of WiMAX Forum.

MAX19999ETX+T -40°C to +85°C 36 Thin QFN-EP*

+Denotes a lead-free/RoHS-compliant package.

*EP = Exposed pad.

T = Tape and reel.

________________________________________________________________ Maxim Integrated Products

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.

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