MAX9930 Datasheet, PDF (1/15 Pages) Maxim Integrated Products – 2MHz to 1.6GHz 45dB RF-Detecting Controllers and RF Detector

19-0859; Rev 0; 8/07
EVAALVUAAILTAIOBNLEKIT
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.
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.
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
Cellular Handsets (TDMA, CDMA, GPRS, GSM)
Features
o Complete RF-Detecting PA Controllers
(MAX9930/MAX9931/MAX9932)
o Complete RF Detector (MAX9933)
o Variety of Input Ranges
MAX9930/MAX9933: -58dBV to -13dBV
(-45dBm to 0dBm for 50Ω Termination)
MAX9931: -48dBV to -3dBV
(-35dBm to +10dBm for 50Ω Termination)
MAX9932: -43dBV to +2dBV
(-30dBm to +15dBm for 50Ω Termination)
o 2MHz to 1.6GHz Frequency Range
o Temperature Stable Linear-in-dB Response
o Fast Response: 70ns 10dB Step
o 10mA Output Sourcing Capability
o Low Power: 17mW at 3V (typ)
o 13µA (typ) Shutdown Current
o Available in a Small 8-Pin µMAX Package
Ordering Information
PART
TEMP RANGE
MAX9930EUA+T
MAX9931EUA+T
MAX9932EUA+T
MAX9933EUA+T
-40^oC to +85^oC
-40^oC to +85^oC
-40^oC to +85^oC
-40^oC to +85^oC
+Denotes a lead-free package.
T = Tape and reel.
PIN-
PACKAGE
8 µMAX-8
8 µMAX-8
8 µMAX-8
8 µMAX-8
PKG
CODE
U8-1
U8-1
U8-1
U8-1
Pin Configurations
TOP VIEW
Block Diagram located at end of data sheet.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
RFIN 1 ⁺
SHDN 2
SET 3
CLPF 4
MAX9930
MAX9931
MAX9932
8 V_CC
7 OUT
6 N.C.
5 GND
RFIN 1 ⁺
SHDN 2
GND 3
MAX9933
CLPF 4
8 V_CC
7 OUT
6 N.C.
5 GND
µMAX
µMAX
________________________________________________________________ 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.