ds8500 Maxim Integrated Products, Inc., ds8500 Datasheet - Page 6

• Manufacturer Part Number: ds8500
• Description: Hart Modem
• Manufacturer: Maxim Integrated Products, Inc.

HART Modem
Figure 4. Typical Application Circuit
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
6
MICROCONTROLLER
_______________________________________________________________________________________
3.6864MHz
CRYSTAL
D_OUT
XCEN
D_IN
OCD
RTS
PACKAGE TYPE
3.6864MHz
20 TQFN
XTAL1
XTAL2
DEMODULATOR
MODULATOR
OSCILLATOR
CRYSTAL
Rx
Tx
GENERATOR
CLOCK
RST
DS8500
DIGITAL
FILTER
DVDD
PACKAGE CODE
MONITOR
POWER
DGND
T2055+3
AGND
SAMPLE/HOLD
1.23V
V
REF
ADC
DAC
AVDD
REF
FSK_IN
FSK_OUT
Package Information
POWER SUPPLY
2.7V TO 3.6V
C4
R1
R2
DOCUMENT NO.
C2
DAC OUTPUT
21-0140
4–20mA
C1
C3
R3
HART AND
4–20mA
OUT
HART IN