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Part Number : AD5700
Function : Low Power HART Modem
Maker : Analog Devices

Pinouts :
AD5700 datasheet

Description :

GENERAL DESCRIPTION
The AD5700/AD5700-1are single-chip solutions, designed and specified to operate as a HART® FSK half-duplex modem, complying with the HART physical layer requirements. The AD5700/AD5700-1integrate all of the necessary filtering, signal detection, modulating, demodulating and signal generation functions, thus requiring few external components. The 0.5%
precision internal oscillator on the AD5700-1 greatly reduces the board space requirements, making it ideal for line-powered applications in both master and slave configurations. The maxi
mum supply current consumption is 115 μA, making the AD5700/AD5700-1 an optimal choice for low power loop-powered applications. Transmit waveforms are phase continuous 1200 Hz and
2200 Hz sinusoids. The AD5700/AD5700-1contain accurate carrier detect circuitry and use a standard UART interface.

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 (AD5700-1only)
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


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

VCC = 1.71 V to 5.5 V, IOVCC = 1.71 V to 5.5 V, AGND = DGND, CLKOUT disabled, HART_OUT with 5 nF load, internal and external receive filter, internal reference; all specifications are from −40°C to +125°C and relate to both A and B models, unless otherwise noted.


Datasheet PDF Download :
AD5700 pdf

Others datasheet of same file : AD5700,AD5700-1,AD5700-1ACPZ-RL7,AD5700-1BCPZ-R5,AD5700-1BCPZ-RL7
2015/01/28 13:52 2015/01/28 13:52

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