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AD5700-1ACPZ-RL7

Low Power HART Modem with Precision Internal Oscillator

Manufacturer:

Analog Devices, Inc
Mfr.Part #:

AD5700-1ACPZ-RL7
Datasheet:

AD5700-1ACPZ-RL7 Datasheet (PDF)
Data Format:

HART
Voltage - Supply:

1.71V ~ 5.5V
Mounting Type:

Surface Mount
Base Product Number:

AD5700
EDA/CAD Models:

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AD5700-1ACPZ-RL7 General Description

The AD5700/AD5700-1 are single-chip solutions, designedand specified to operate as a HART^® FSK half-duplex modem,complying with the HART physical layer requirements. TheAD5700/AD5700-1 integrate all of the necessary filtering, signaldetection, modulating, demodulating and signal generationfunctions, thus requiring few external components. The 0.5%precision internal oscillator on the AD5700-1 greatly reducesthe board space requirements, making it ideal for line-poweredapplications in both master and slave configurations. The maximumsupply current consumption is 115µA, making theAD5700/AD5700-1 an optimal choice for low power loop-powered applications.Transmit waveforms are phase continuous 1200 Hz and2200 Hz sinusoids. The AD5700/AD5700-1 contain accuratecarrier detect circuitry and use a standard UART interface.

Key Features

HART-compliant fully integrated FSK modem
1200 Hz and 2200 Hz sinusoidal shift frequencies
115 µA maximum supply current in receive mode
Suitable for intrinsically safe applications
Integrated receive band-pass filter
- Minimal external components required
Clocking optimized for various system configurations
- Ultralow power crystal oscillator (60 µA maximum)
- External CMOS clock source
- Precision internal oscillator
Buffered HART output—extra drive capability
8 kV HBM ESD rating
1.71 V to 5.5 V power supply
1.71 V to 5.5 V interface
−40°C to +125°C operation
4 mm × 4 mm LFCSP package
HART physical layer compliant
UART interface

Application

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

Specifications

Category	Integrated Circuits (ICs)InterfaceModems - ICs and Modules	Series	-
Data Format	HART	Baud Rates	-
Voltage - Supply	1.71V ~ 5.5V	Mounting Type	Surface Mount
Base Product Number	AD5700