DS1870 Datasheet PDF | Maxim Integrated

Maxim Integrated DS1870

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.

Part No.	DS1870
Datasheet	DS1870 Download
Manufacturer	Maxim Integrated
Description	LDMOS RF Power-Amplifier Bias Controller
Buy	Stock & Price

GENERAL DESCRIPTION

FEATURES

♦ 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 ♦ Single 5V Power Supply ♦ Small 16-Pin TSSOP Package ♦ -40°C to +95°C Operational Temperature Range DS1870

APPLICATIONS

Cellular Base Stations Medical Equipment Industrial Controls Optical Transceivers Ordering Information I2C is a trademark of Philips Corp. Purchase of I2C components of Maxim Integrated Products, Inc., or one of its sublicensed Associated Companies, conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips.