AMC7891 Datasheet | Texas Instruments

Features - 1 Eight Monotonic 12-bit DACs With Programmable Ranges - Four Bipolar DACs: - 4 to 1 V, - 5 to 0 V, and 0 to 5 V - Four Unipolar DACs: 0 to 5 V, and 2.5 to 7.5 V - High Current Drive Capability: up to ±10 m A - Selectable Clamp Voltage - Multi-Channel 12-bit SAR ADC - Four External Analog Inputs: 0 to 2.5 V Range - Four Internal Inputs for Bipolar DAC Monitoring - Programmable Out-of-Range Alarms - Four High-Side Current-Sense Amplifiers - mon Mode Voltages: 4 to 60 V - Optional Closed-Loop Drain-Current Controller Operation - Temperature Sensing Capabilities - Internal Temperature Sensor - Two Remote Temperature-Diode Drivers - Internal 2.5 V Reference - Four General-Purpose I/O Ports (GPIOs) - Low-Power SPI-patible Serial Interface - 4-Wire Mode, 1.7 to 3.6 V Operation - Operating Temperature Range: - 40°C to +125°C - Available in a 56-Pin VQFN Package 2 Applications - munications Infrastructure: - Cellular Base Stations - Microwave Backhaul - Optical Networks - General-Purpose Monitor and Control - Data Acquisition Systems 3 Description The AMC7834 device is a highly-integrated, lowpower, analog monitoring and control solution for power-amplifier (PA) biasing capable of temperature, current and voltage supervision. The device integrates a multi-channel, 12-bit analogto-digital converter (ADC); eight, 12-bit digital-toanalog converters (DAC); four high-side currentsense amplifiers that can be optionally set to operate as part of four independent closed-loop drain-current controllers; an accurate on-chip temperature sensor and two remote temperature-sensor diode drivers; four configurable general-purpose I/O ports (GPIOs); and an accurate internal reference. The high level of integration significantly reduces ponent count and simplifies PA-biasing system designs. The function integration and wide operatingtemperature range of the device make it suitable as an all-in-one, low-cost, bias control-circuit for PAs found in multi-channel RF munication systems....