AD5700BCPZ-R5

Overview

The AD5700BCPZ-R5 is a single-chip, low-power HART FSK half-duplex modem compliant with the HART physical layer requirements. It integrates modulation, demodulation, signal detection, and filtering functions to minimize external component count. The device operates on a power supply range of 1.71 V to 5.5 V for both VCC and IOVCC. In receive mode, the maximum supply current consumption is 115 µA when using an external clock within the -40°C to +85°C temperature range. The part utilizes a standard UART interface and features a buffered HART output capable of driving loads up to 160 Ω. It supports 1200 Hz and 2200 Hz sinusoidal shift frequencies and includes an ultralow power crystal oscillator consuming a maximum of 60 µA.

Feature Summary

• Fully integrated HART-compliant FSK modem with internal band-pass filter and precision voltage reference
• Ultralow power operation suitable for intrinsically safe and loop-powered applications
• Buffered HART output providing high drive capability without external buffering components
• Flexible clocking options including external crystal, CMOS clock source, or internal RC oscillator

Applications

• Field transmitters
• HART multiplexers
• PLC and DCS analog I/O modules
• HART network connectivity

Procurement Notes

Verify the specific suffix R5 indicates reel packaging configuration. Confirm that the B grade meets the required industrial temperature specifications. Ensure the design accounts for the exposed paddle connection to AGND or DGND for thermal performance. Validate that the selected clocking scheme aligns with the system's power budget constraints.

Selection Notes

Select this component for applications requiring a compact, low-power solution for HART communication. The AD5700 requires an external crystal or clock source; consider the AD5700-1 if an internal oscillator is preferred to reduce board space. Ensure the system voltage remains within the 1.71 V to 5.5 V range for both analog and digital supplies.

Part Context

The AD5700 belongs to the Analog Devices HART modem family, designed specifically for industrial process control communication. It serves as a physical layer interface between microcontrollers and HART-enabled field devices. The device complements other Analog Devices data converters and DACs in complete HART-based instrumentation solutions.

Replacement Considerations

The AD5700-1 is a compatible alternative featuring a precision internal oscillator, eliminating the need for an external crystal. Verify pin compatibility and software register configurations when substituting between the AD5700 and AD5700-1 variants.