DS1870

LDMOS RF Power-Amplifier Bias Controller

Industry's First Integrated LDMOS Power-Amplifier Controller Monitor

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Part Details

Two-Channel Solution for Programmable RF Bias Control
The Potentiometer's Position is Automatically Updated to Compensate for the Ambient Temperature and the Drain Voltage or Current
A Five-Channel, 13-Bit ADC Continuously Monitors the Ambient Temperature, V_CC, V_D, I_D1, and I_D2
Hi/Lo Alarms for Each ADC Channel can Trigger a Fault Output
Nonvolatile Memory for the Device Settings, Lookup Tables, and 32-Bytes of User Memory
I²C-Compatible Serial Interface with Up to Eight Devices on the Same Serial Bus
Single 5V Power Supply
Small 16-Pin TSSOP Package
-40°C to +95°C Operational Temperature Range

This is the most up-to-date revision of the Data Sheet.

Parts	Product Life Cycle	Description
Analog to Digital Converters 1
DS1859	NOT RECOMMENDED FOR NEW DESIGNS	Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors
Current Mirrors & Matched Devices 3
DS1847	NOT RECOMMENDED FOR NEW DESIGNS	Dual Temperature-Controlled NV Variable Resistor
DS1848	NOT RECOMMENDED FOR NEW DESIGNS	Dual Temperature-Controlled NV Variable Resistor & Memory
DS1858	NOT RECOMMENDED FOR NEW DESIGNS	Dual Temperature-Controlled Resistors with Three Monitors

Digital to Analog Converters 2
DS1845	NOT RECOMMENDED FOR NEW DESIGNS	Dual NV Potentiometer and Memory
DS1855	NOT RECOMMENDED FOR NEW DESIGNS	Dual Nonvolatile Digital Potentiometer and Secure Memory
Interface Transceivers & Isolators 1
DS1852		Optical Transceiver Diagnostic Monitor

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