MAX9930EVKIT+【PDF 1/16 页】KIT EVAL FOR MAX9930

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Sheet目录475

[1页]2页 3页 4页 5页

19-0859; Rev 1; 3/09

ATION

EVALU

AVAILA

KIT

BLE

2MHz to 1.6GHz 45dB RF-Detecting

Controllers and RF Detector

General Description

The MAX9930–MAX9933 low-cost, low-power logarith-

mic amplifiers are designed to control RF power ampli-

fiers (PA) and transimpedance amplifiers (TIA), and to

detect RF power levels. These devices are designed to

operate in the 2MHz to 1.6GHz frequency range. A typi-

cal dynamic range of 45dB makes this family of logarith-

mic amplifiers useful in a variety of wireless and GPON

fiber video applications such as transmitter power mea-

surement, and RSSI for terminal devices. Logarithmic

amplifiers provide much wider measurement range and

superior accuracy to controllers based on diode detec-

tors. Excellent temperature stability is achieved over the

full operating range of -40°C to +85°C.

The choice of three different input voltage ranges elimi-

nates the need for external attenuators, thus simplifying

PA control-loop design. The logarithmic amplifier is a

voltage-measuring device with a typical signal range of

-58dBV to -13dBV for the MAX9930/MAX9933, -48dBV

to -3dBV for the MAX9931, and -43dBV to +2dBV for

the MAX9932.

The MAX9930–MAX9933 require an external coupling

capacitor in series with the RF input port. These devices

feature a power-on delay when coming out of shutdown,

holding OUT low for approximately 2.5μs to ensure

glitch-free controller output.

Features

? Complete RF-Detecting PA Controllers

(MAX9930/MAX9931/MAX9932)

? Complete RF Detector (MAX9933)

? Variety of Input Ranges

MAX9930/MAX9933: -58dBV to -13dBV

(-45dBm to 0dBm for 50 ? Termination)

MAX9931: -48dBV to -3dBV

(-35dBm to +10dBm for 50 ? Termination)

MAX9932: -43dBV to +2dBV

(-30dBm to +15dBm for 50 ? Termination)

? 2MHz to 1.6GHz Frequency Range

? Temperature Stable Linear-in-dB Response

? Fast Response: 70ns 10dB Step

? 10mA Output Sourcing Capability

? Low Power: 17mW at 3V (typ)

? 13 μ A (typ) Shutdown Current

? Available in a Small 8-Pin μ MAX Package

Ordering Information

The MAX9930–MAX9933 family is available in an 8-pin

μMAX ? package. These devices consume 7mA with a

5V supply, and when powered down, the typical shut-

down current is 13μA.

PART

MAX9930 EUA+T

MAX9931 EUA+T

MAX9932 EUA+T

MAX9933 EUA+T

TEMP RANGE

-40 o C to +85 o C

PIN-PACKAGE

8 μMAX-8

Applications

RSSI for Fiber Modules, GPON-CATV Triplexors

Low-Frequency RF OOK and ASK Applications

Transmitter Power Measurement and Control

TSI for Wireless Terminal Devices

+Denotes a lead-free package.

T = Tape and reel.

Pin Configurations

Cellular Handsets (TDMA, CDMA, GPRS, GSM)

TOP VIEW

RFIN 1

SHDN 2

SET 3

MAX9930

MAX9931

8 V CC

7 OUT

6 N.C.

RFIN 1

SHDN 2

GND 3

MAX9933

8 V CC

7 OUT

6 N.C.

Block Diagram appears at end of data sheet.

CLPF 4

MAX9932

5 GND

CLPF 4

5 GND

μMAX is a registered trademark of Maxim Integrated Products, Inc.

μ MAX

________________________________________________________________ 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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