Part # AD7294 datasheet

Part Manufacturer: Analog Devices

Analog Devices

Part Description: AD7294 12-Bit Monitor and Control System with Multichannel ADC DACs Temperature Sensor and Current Sense (Rev. B)

Part Details:

12-Bit Monitor and Control System with Multichannel ADC, DACs, Temperature Sensor, and Current Sense AD7294 FEATURES APPLICATIONS 12-bit SAR ADC with 3 s conversion time Cellular base stations 4 uncommitted analog inputs GSM, EDGE, UMTS, CDMA, TD-SCDMA, W-CDMA, WiMAX Differential/single-ended Point-to-multipoint and other RF transmission systems VREF, 2 × VREF input ranges 12 V, 24 V, 48 V automotive applications 2 high-side current sense inputs Industrial controls 5 V to 59.4 V operating range GENERAL DESCRIPTION 0.5% max gain error ±200 mV input range The AD7294 contains all the functions required for general- 2 external diode temperature sensor inputs purpose monitoring and control of current, voltage, and -55°C to +150°C measurement range temperature integrated into a single-chip solution. The part ±2°C accuracy includes low voltage (±200 mV) analog input sense amplifiers Series resistance cancellation for current monitoring across shunt resistors, temperature sense 1 internal temperature sensor inputs, and four uncommitted analog input channels multiplexed ±2°C accuracy into a SAR analog-to-digital converter (ADC) with a 3 s conver- Built-in monitoring features sion time. A high accuracy internal reference is provided to drive Minimum/maximum recorder for each channel both the digital-to-analog converter (DAC) and ADC. Four 12-bit Programmable alert thresholds DACs provide the outputs for voltage control. The AD7294 also Programmable hysteresis includes limit registers for alarm functions. The part is designed Four 12-bit monotonic 15 V DACs on Analog Devices, Inc., high voltage DMOS process for high 5 V span, 0 V to 10 V offset voltage compliance, 59.4 V on the current sense inputs, and up 8 s settling time to a 15 V DAC output voltage. 10 mA sink and source capability The AD7294 is a highly integrated solution that offers all the Power-on resets (POR) to 0 V functionality necessary for precise control of the power amplifier Internal 2.5 V reference in cellular base station applications. In these types of applications, 2-wire fast mode I2C interface the DACs provide 12-bit resolution to control the bias currents

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AD7294.pdf Datasheet