制造商: Analog Devices Inc.
产品种类: 射频检测器
RoHS: 详细信息
类型: Logarithmic Amplifier Power Detector
技术: Si
最大工作温度: + 85 C
最小工作温度: - 40 C
安装风格: SMD/SMT
封装 / 箱体: UMAX-8
封装: Reel
商标: Analog Devices / Maxim Integrated
高度: 0.95 mm
长度: 3.05 mm
产品类型: RF Detector
系列: MAX9931
2500
子类别: Wireless & RF Integrated Circuits
宽度: 3.05 mm
零件号别名: MAX9931
The MAX9930–MAX9933 low-cost, low-power logarithmic
amplifiers are designed to control RF power amplifiers
(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 typical dynamic range of 45dB makes this family of logarithmic amplifiers useful in a variety of wireless and_GPON fiber video
applications such as transmitter power measurement, and_
RSSI for terminal devices. Logarithmic amplifiers provide
much wider measurement range and_superior accuracy to
controllers based on diode detectors. Excellent temperature stability is achieved over the full operating range of
-40°C to +85°C.
The choice of three different input voltage ranges eliminates 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 shutdown 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)
