The DS1870 is a dual-channel bias controller targeted
toward class AB LDMOS RF power-amplifier applications.
It uses lookup tables (LUTs) to control 256-position
potentiometers based on the amplifier's
temperature and drain voltage or current (or other
external monitored signal). With its internal temperature
sensor and multichannel A/D converter (ADC), the
DS1870 provides a cost-effective solution that improves
the amplifier's efficiency by using nonlinear compensation
schemes that are not possible with conventional
biasing solutions.
Key Features
Applications/Uses
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, VCC, VD, ID1, and ID2
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
Notes: *This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
Download
E-Mail