HT574 Datasheet, PDF (1/8 Pages) List of Unclassifed Manufacturers – HIGH TEMPERATURE UP COMPATIBLE 12-BIT A/D CONVERTER

HTMOS^TM High Temperature Products
HIGH TEMPERATURE µP COMPATIBLE
12-BIT A/D CONVERTER
Advance Information
HT574
FEATURES
• Specified Over -55 to +225°C
• Includes On-Chip Clock, Reference,
µP Interface and Sample/Hold
• 11-Bit Linearity
• 10 µs Maximum Conversion, Including Acquisition
• Hermetic 28-Lead Ceramic DIP
APPLICATIONS
• Down-Hole Oil Well
• Avionics
• Turbine Engine Control
• Industrial Process Control
• Nuclear Reactor
• Electric Power Conversion
• Heavy Duty Internal Combustion Engines
GENERAL DESCRIPTION
The HT574 is a general purpose, 12-bit successive approxi-
mation A/D converter intended for applications with an
extremely wide operating temperature range. Fabricated
with Honeywell’s dielectrically isolated high temperature
(HTMOS™) process, it is designed specifically for severe
high-temperature applications.
The HT574 includes a switched capacitor, digital-to-analog
converter, internal reference, comparator, successive ap-
proximation register, sample and hold, oscillator and archi-
tecture which allows it to be used with minimal external
components. Tristate output buffers and digital control pins
are also provided for microprocessor interfacing. Analog
input signal ranges of 0 to +10V, 0 to +20V, or ±5V may be
selected from the internal resistor scaling network.
The HT574 provides 12-bit conversions in 10µs over the
entire -55 to +225°C temperature range. Typically, parts will
operate up to +300°C for a year, with derated performance.
All parts are burned in at 250°C to eliminate infant mortality.
28-LEAD PACKAGE
1
Ceramic
Body
AQ
L
b2
D
Right
Reading
E
on Lid
S2
S1
b
e
(width)
(pitch)
C
All dimensions in inches
A 0.175 (max)
eA
b 0.018 ± 0.002
b2 0.050 (typ)
C 0.010 to 0.002
D 1.400 ± 0.014
E 0.594 ± 0.010
e 0.100 ±0.005
eA 0.600 ±0.010
L 0.125 to 0.175
Q 0.050 ±0.010
S1 0.005 (min)
S2 0.005 (min)
Solid State Electronics Center • 12001 State Highway 55, Plymouth, MN 55441 • [phone] • http://www.ssec.honeywell.com