MAX19994AEVKIT#【PDF 1/28 页】KIT EVAL FOR MAX19994A MIXER

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19-5197; Rev 0; 4/10

Dual, SiGe, High-Linearity, 1200MHz to 2000MHz

Downconversion Mixer with LO Buffer/Switch

General Description

The MAX19994A dual-channel downconverter is

designed to provide 8.4dB of conversion gain, +25dBm

input IP3, +14dBm 1dB input compression point, and a

noise figure of 9.8dB for 1200MHz to 2000MHz diversity

receiver applications. With an optimized LO frequency

range of 1450MHz to 2050MHz, this mixer supports both

high- and low-side LO injection architectures for the

1200MHz to 1700MHz and 1700MHz to 2000MHz RF

bands, respectively.

In addition to offering excellent linearity and noise perfor-

mance, the device 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 MAX19994A requires a

nominal LO drive of 0dBm and a typical supply current of

330mA at V CC = 5.0V, or 264mA at V CC = 3.3V.

The MAX19994A is pin compatible with the MAX9985/

MAX9995/MAX19985A/MAX19993/MAX19995/

MAX19995A series of 700MHz to 2500MHz mixers

and pin similar with the MAX19997A/MAX19999 series

of 1850MHz to 4000MHz mixers, making this entire

family of downconverters ideal for applications where a

common PCB layout is used across multiple frequency

bands.

The device 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

T C = -40 N C to +85 N C.

Applications

WCDMA/LTE Base Stations

TD-SCDMA Base Stations

GSM/EDGE Base Stations

Features

S 1200MHz to 2000MHz RF Frequency Range

S 1450MHz to 2050MHz LO Frequency Range

S 50MHz to 500MHz IF Frequency Range

S 8.4dB Typical Conversion Gain

S 9.8dB Typical Noise Figure

S +25dBm Typical Input IP3

S +14dBm Typical Input 1dB Compression Point

S 68dBc Typical 2LO - 2RF Spurious Rejection at

P RF = -10dBm

S Dual Channels Ideal for Diversity Receiver

Applications

S 47dB Typical Channel-to-Channel Isolation

S Low -6dBm to +3dBm LO Drive

S Integrated LO Buffer

S Internal RF and LO Baluns for Single-Ended

Inputs

S Built-In SPDT LO Switch with 48dB LO-to-LO

Isolation and 50ns Switching Time

S Pin Compatible with the MAX9985/MAX9995/

MAX19985A/MAX19993/MAX19995/MAX19995A

Series of 700MHz to 2200MHz Mixers

S Pin Similar to the MAX19997A/MAX19999 Series

of 1850MHz to 4000MHz Mixers

S Single 5.0V or 3.3V Supply

S External Current-Setting Resistors Provide Option

for Operating Device in Reduced-Power/Reduced-

Performance Mode

Ordering Information

cdma2000 M Base Stations

Wireless Local Loop

PART

MAX19994AETX+

TEMP RANGE

-40 N C to +85 N C

PIN-PACKAGE

36 Thin QFN-EP*

Fixed Broadband Wireless Access

Private Mobile Radios

Military Systems

MAX19994AETX+T -40 N C to +85 N C 36 Thin QFN-EP*

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

* EP = Exposed pad.

T = Tape and reel.

cdma2000 is a registered trademark of Telecommunications

Industry Association.

_______________________________________________________________ Maxim Integrated Products 1

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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