厂商：Freescale
类别：16位单片机
类别：PowerPC
厂商：Linear
类别：A/D 数据转换器
厂商：Murata
类别：EMI滤波器
厂商：Panasonic
类别：PhotoMOS(MOSFET输出光电耦合器)
类别：差动放大器
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特点Supports AM Modulation in EDGE/TDMA (ANSI-136) ApplicationsSingle Output RF Power Amplifier Control (LTC4403-1)Dual Output RF Power Amplifier Control (LTC4403-2)Internal Schottky Diode Detector with >40dB RangeWide Input Frequency Range: 300MHz to 2.4GHzAutozero Loop Cancels Offset Errors and Temperature Dependent Offsets Wide V IN Range: 2.7V to 6V Allows Direct Connection to BatteryRF Output Power Set by External DACInternal Frequency CompensationRail-to-Rail Power Control OutputsLow Operating Current: 1mALow Shutdown Current: <10μAPCTL Input FilterAvailable in a 8-Pin MSOP Package (LTC4403-1) and 10-Pin MSOP (LTC4403-2)典型应用描述The LTC?4403-2 is a multiband RF power controller for RF power amplifiers operating in the 300MHz to 2.4GHz range. The LTC4403-2 has two outputs to control dual T X PA modules with two control inputs. An internal sample and hold circuit enables the LTC4403-2 to be used with AM modulation via the carrier or PA supply. The input voltage range is optimized for operation from a single lithium-ion cell or 3x NiMH.RF power is controlled by driving the RF amplifier power control pins and sensing the resultant RF output power. The RF sense voltage is peak detected using an on-chip Schottky diode. This detected voltage is compared to the DAC voltage at the PCTL pin to control the output power.The LTC4403-1 is a single output RF power controller with identical performance to the LTC4403-2. The LTC4403-1 has one output to control a single T X PA or dual T X PA module with a single control input and is available in an 8-pin MSOP package.Internal and external offsets are cancelled over temperature by an autozero control loop. The shutdown feature disables the part and reduces the supply current to <10μA.