AD7294BCPZ

ADCs/DACs - Special Purpose Overview

The AD7294BCPZ is a 12-bit monitor and control system integrating a SAR ADC, four DACs, temperature sensors, and current sense amplifiers. It features a 5 V to 59.4 V operating range on high-side current inputs and supports ±200 mV input ranges. The device includes four 12-bit monotonic DACs with 8 μs settling time and 10 mA source/sink capability. An internal 2.5 V reference drives both the ADC and DACs. Communication is handled via a 2-wire fast mode I2C interface. The component operates within a temperature range of −40°C to +105°C and is housed in a 56-lead LFCSP package.

ADCs/DACs - Special Purpose Feature Summary

• Integrated 12-bit SAR ADC with 3 μs conversion time and up to 22.22 kSPS throughput
• Four 12-bit DACs with 8 μs settling time, 10 mA drive capability, and programmable offset
• High-voltage current sense inputs supporting 5 V to 59.4 V range with ±200 mV measurement window
• Dual external diode and one internal temperature sensor with ±2°C accuracy

ADCs/DACs - Special Purpose Applications

• Cellular base station power amplifier bias current control
• GSM, EDGE, UMTS, CDMA, TD-SCDMA, W-CDMA, and WiMAX RF transmission systems
• 12 V, 24 V, and 48 V automotive applications
• Industrial controls requiring multi-channel monitoring

ADCs/DACs - Special Purpose Procurement Notes

Verify the B version suffix indicates the −40°C to +105°C industrial temperature grade. Confirm the CPZ suffix corresponds to the 56-lead LFCSP package type. Ensure compatibility with the 2-wire I2C interface protocol and check that the required supply voltages (AVDD/DVDD 4.5 V–5.5 V) align with system design constraints.

ADCs/DACs - Special Purpose Selection Notes

Select this component for applications requiring high-voltage current sensing up to 59.4 V combined with low-voltage analog control. The integrated temperature sensors eliminate external components for thermal monitoring. Ensure the I2C bus speed does not exceed 400 kHz and that the DAC output voltage span requirements fit within the 0 V to 15 V adjustable range defined by the OFFSET IN pins.

ADCs/DACs - Special Purpose Part Context

The AD7294 belongs to Analog Devices' family of integrated monitor and control solutions. It combines data acquisition and digital-to-analog conversion functions into a single chip, reducing board space compared to discrete implementations. The BC variant specifically denotes the industrial temperature range and LFCSP packaging option within the broader AD7294 product line.

ADCs/DACs - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.