Integrated RF Schottky Detector

The NCS5000 is an integrated schottky detector intended for use as a level detector in RF measurement/power control applications such as those found in GSM handsets. The detector converts the peak RF voltage applied to a DC level. The circuit consists of an RF schottky detector, a reference schottky diode, as well as biasing and control circuitry. There is an enable input that allows the part to be placed in a low power state when not in use.
The detector is designed for operation up to 2.0 GHz and can operate with input power levels up to +25 dBm. There is a fixed offset of 10 mV (nominal) between the Reference Detector and the RF Detector under no applied RF. The two detectors are monolithically integrated so that they closely track over temperature, voltage and process.
The NCS5000 is housed in a very small TSOP–6 package ideal for portable applications. The TSOP–6 package is a lower profile, footprint compatible package to the SOT23–6.

FEATUREs
• Wide Operating Frequency Range to 2.0 GHz
• 2.7–5.5 V Operating Voltage
• Very Low Operating Current of 300 A
• Enable Control to Place the Part in a Low Current Standby Mode
• Typical Standby Current of < 1.0 A
• –40 to 85°C Operating Temperature Range
• Very Small TSOP–6 Package

Typical Applications
• Cellular Handsets (GSM and DCS1800/PCS1900)
• Wireless Data Modems
• Transmitter Power Measurement and Control
• Test Equipment