• 简体中文
• English

DS1870：LDMOS RF Power-Amplifier Bias Controller

Industry's First Integrated LDMOS Power-Amplifier Controller Monitor

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 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: Typical Operating Circuit Applications/Uses Cellular Base Stations Industrial Controls Medical Equipment Optical Transceivers

DataSheet

Parametrics

Quality and Environmental Data

• DS1870.pdf

Related Products

• DS1859：Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors
• DS1858：Dual Temperature-Controlled Resistors with Three Monitors
• DS1847：Dual Temperature-Controlled NV Variable Resistor
• DS1848：Dual Temperature-Controlled NV Variable Resistor & Memory
• DS1852：Optical Transceiver Diagnostic Monitor
• DS1855：Dual Nonvolatile Digital Potentiometer and Secure Memory
• DS1845：Dual NV Potentiometer and Memory

Ordering Information