Número de pieza
AD7294BCPZRL
componentes Descripción
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PDF
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48 Pages
File Size
1.2 MB
Fabricante
Analog Devices
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GENERAL DESCRIPTION
The AD7294 contains all the functions required for general-purpose monitoring and control of current, voltage, and temperature integrated into a single-chip solution. The device 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.
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
0.5% max 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 resets (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 or 56-lead LFCSP
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
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