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Smar Research

HT2015 Datasheet Preview

HT2015 Datasheet

HART Modem

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SmarResearch
TechnologySource
HART®
Fieldbus
Profibus
Intrinsic Safety
Configuration Tools
Semiconductors
Training
Custom Design
HART Modem
HT2015
DataSheet
Features
Can be used in designs presently using the SYM20C15 or equivalent
type chip
Single-chip, half-duplex 1200 bits per second FSK modem
Bell 202 shift frequencies of 1200 Hz and 2200 Hz
3.3V-5.0V power supply
Transmit-signal wave shaping
Receive band-pass filter
Low power: optimal for intrinsically safe applications
CMOS compatible
Internal oscillator requires 460.8 kHz crystal or ceramic resonator
Meets HART physical layer requirements
Industrial temperature range of -40 °C to +85 °C
Available in a 28-pin PLCC and 32-pin LQFP packages
(LQFP pictured)
©Smar Research Corporation
1 HT2015DS - 0303




Smar Research

HT2015 Datasheet Preview

HT2015 Datasheet

HART Modem

No Preview Available !

General Description
The HT2015 is a single-chip,
CMOS modem for use in Highway
Addressable Remote Transducer (HART)
field instruments and masters. The
modem and a few external passive
components provide all of the functions
needed to satisfy HART physical layer
requirements including modulation,
demodulation, receive filtering, carrier
detect and transmit-signal shaping. The
HT2015 is pin-compatible with the
SYM20C15. See the Pin Description and
Functional Description sections for
details on pin compatibility with the
SYM20C15.
The HT2015 uses Phase Continuous
Frequency Shift Keying (FSK) at 1200
bits per second. To conserve power the
receive circuits are disabled during
transmit operations and vice versa. This
provides the half-duplex operation used
in HART communications.
Fig. 1 - 28 pin PLCC Pinout Package
Fig. 2 - 32 pin LQFP Pinout Package
©Smar Research Corporation
2 HT2015DS - 0303


Part Number HT2015
Description HART Modem
Maker Smar Research
Total Page 15 Pages
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