AD7294-2BSUZ datasheet(1/45 Pages) AD

Numer części	AD7294-2BSUZ

Szczegółowy opis	12-Bit Monitor and Control System

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12-Bit Monitor and Control System with Multichannel

ADC, DACs, Temperature Sensor, and Current Sense

Data Sheet

AD7294-2

Rev. 0

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FEATURES

12-bit SAR ADC with 3 μs conversion time

4 uncommitted analog inputs

Differential/single-ended

VREF, 2 × VREF input ranges

2 high-side current sense inputs

5 V to 59.4 V operating range

0.75% maximum gain error

±200 mV input range

2 external diode temperature sensor inputs

−55°C to +150°C measurement range

±2°C accuracy

Series resistance cancellation

1 internal temperature sensor: ±2°C accuracy

Built-in monitoring features

Minimum/maximum recorder for each channel

Programmable alert thresholds

Programmable hysteresis

Four 12-bit, monotonic, 15 V DACs

5 V span, 0 V to 10 V offset

8 μs settling time

10 mA sink and source capability

Power-on reset (POR) to 0 V

Internal 2.5 V reference

2-wire, fast mode I2C interface

Temperature range: −40°C to +105°C

Package type: 64-lead TQFP

Pin compatible with the AD7294

APPLICATIONS

Cellular base stations

GSM, EDGE, UMTS, CDMA, TD-SCDMA, W-CDMA, WiMAX

Point-to-multipoint and other RF transmission systems

12 V, 24 V, 48 V automotive applications

Industrial controls

GENERAL DESCRIPTION

The AD7294-2 contains all the functions that are required for

general-purpose monitoring and control of current, voltage,

and temperature, integrated into a single-chip solution. The part

includes low voltage (±200 mV) analog input sense amplifiers

for current monitoring across shunt resistors, temperature sense

inputs, and four uncommitted analog input channels multiplexed

into a SAR analog-to-digital converter (ADC) with a 3 μs

conversion time. A high accuracy internal reference is provided

to drive both the digital-to-analog converters (DACs) and the

ADC. Four 12-bit DACs provide the outputs for voltage control.

The AD7294-2 also includes limit registers for alarm functions.

The part is designed for high voltage compliance: 59.4 V on the

current sense inputs and up to a 15 V DAC output voltage.

The AD7294-2 is a highly integrated solution that offers all the

functionality necessary for precise control of the power amplifier

in cellular base station applications. In these types of applications,

the DACs provide 12-bit resolution to control the bias currents

of the power transistors. Thermal diode-based temperature sensors

are incorporated to compensate for temperature effects. The ADC

monitors the high-side current and temperature. This functionality

is provided in a 64-lead TQFP, which operates over a temperature

range of −40°C to +105°C.

Podobny numer części - AD7294-2BSUZ

Producent	Numer części	Arkusz danych	Szczegółowy opis
Analog Devices	AD7294	682Kb / 45P	12-Bit, Multichannel, DAC/ADC Temperature Sensor and Current Sense for Monitor and Control Applications Rev. PrB
	AD7294	1Mb / 48P	12-Bit Monitor and Control System with Multichannel
	AD7294BCPZ	1Mb / 48P	12-Bit Monitor and Control System with Multichannel
	AD7294BCPZRL	1Mb / 48P	12-Bit Monitor and Control System with Multichannel
	AD7294BSUZ	1Mb / 48P	12-Bit Monitor and Control System with Multichannel

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Podobny opis - AD7294-2BSUZ

Producent	Numer części	Arkusz danych	Szczegółowy opis
Analog Devices	AD7294	1Mb / 48P	12-Bit Monitor and Control System with Multichannel
Mean Well Enterprises C...	RCP-MU	315Kb / 3P	Power Control and Monitor System
Mean Well Enterprises C...	RCP-MU	313Kb / 3P	Power Control and Monitor System
Texas Instruments	UCD90124	2Mb / 44P	[Old version datasheet] 12-Rail Sequencer and System Health Monitor With Fan Control
	UCD90124	2Mb / 46P	[Old version datasheet] 12-Rail Sequencer and System Health Monitor With Fan Control
	AMC7834	3Mb / 90P	[Old version datasheet] AMC7834 12-Bit Integrated Power-Amplifier Monitor and Control System with Temperature, Current and Voltage Supervision Capabilities
	AMC7834	4Mb / 93P	[Old version datasheet] AMC7834 12-Bit Integrated Power-Amplifier Monitor and Control System with Temperature, Current and Voltage Supervision Capabilities
Analog Devices	AD7292	734Kb / 41P	10-Bit Monitor and Control System with ADC,DACs, Temperature Sensor, and GPIOs
Texas Instruments	UCD90120	2Mb / 40P	[Old version datasheet] UCD90120 12-Channel Sequencer and System Health Monitor
Analog Devices	AD7294	682Kb / 45P	12-Bit, Multichannel, DAC/ADC Temperature Sensor and Current Sense for Monitor and Control Applications Rev. PrB

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