Maxim MAX22344CAAP+

Емкостная связь43750 Врмз

Overview

The MAX2232/MAX2233 low-voltage, silicon RF power amplifiers (PAs) are designed for use in the 900MHz ISM band. They operate from a single +2.7V to +5.5V supply, allowing them to be powered directly from a 3-cell NiCd or a 1-cell Lithium-Ion battery. The devices typically deliver 250mW (+24dBm) of output power at 915MHz from a single +3.6V supply, or 150mW (+22dBm) from a single +2.7V supply. At +24dBm output power, power-added efficiency (PAE) is 44%. The MAX2232/MAX2233 provide 24dB of gain, which is adjustable over a continuous 24dB span via the analog gain-control pin of the MAX2232EEE or in two 10dB steps via the 2-bit programmable gain-control DAC of the MAX2233. An external capacitor sets the RF output power envelope ramp time, reducing spurious emissions during power-up and power-down by providing a gradual change in output power (MAX2232). The MAX2232/MAX2233 feature a low-power shutdown mode, which typically draws less than 1μA of supply current, saving power during "idle slots" in time-division multiple-access (TDMA) systems. The ΔVSWR of the RF input in shutdown mode relative to normal operation is 1.2:1. The devices also feature a thermal shutdown function, enabling the PA to protect itself from excessive temperature conditions that could damage the IC. A capacitor to ground limits thermal cycling by setting a thermal shutdown timeout period. The MAX2232/MAX2233 are available in a space-saving, thermally enhanced 16-pin power-QSOP (PQSOP) package.

Features

Tube Package
Capacitive Coupling Technology
CAN, RS422, RS485, SPI Type
No Isolated Power
4 Number of Channels
4/0 Inputs - Side 1/Side 2
Unidirectional Channel Type
3750Vrms Voltage - Isolation
50kV/µs Common Mode Transient Immunity (Min)
200Mbps Data Rate
9.2ns, 9.4ns Propagation Delay tpLH / tpHL (Max)
2ns Pulse Width Distortion (Max)
0.8ns, 1ns (Max) Rise / Fall Time (Typ)
1.71V ~ 5.5V Voltage - Supply
Surface Mount Mounting Type