Analog-to-Digital Converter. ADS774H Datasheet

ADS774H Converter. Datasheet pdf. Equivalent

Part ADS774H
Description Analog-to-Digital Converter
Feature ADS774x ADS774x ADS774H www.ti.com ...............................................................
Manufacture etcTI
Datasheet
Download ADS774H Datasheet

ADS774x ADS774x ADS774H www.ti.com ...................... ADS774H Datasheet
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ADS774H
ADS774x
ADS774x
ADS774H
www.ti.com ................................................................................................................................................................................................ SBAS443 – AUGUST 2009
Microprocessor-Compatible Sampling
CMOS ANALOG-TO-DIGITAL CONVERTER
FEATURES
1
2 Drop-In Replacement for the ADS774
Complete Sampling ADC with Reference,
Clock, and Microprocessor Interface
Fast Acquisition and Conversion: 8.5µs Max
Over Temperature
Eliminates External Sample/Hold in Most
Applications
Ensured AC and DC Performance
Single +5V Supply Operation
Low Power: 120mW Max
Package Options: SO, 0.6in and 0.3in DIPs(1)
APPLICATIONS
Medical Instrumentation
Data Acquisition Systems
Robotics
Industrial Control
Test Equipment
Digital Signal Processing
DSP Servo Control
Control
Inputs
Bipolar
Offset
20V Range
10V Range
2.5V Reference
Input
2.5V Reference
Output
CDAC
DESCRIPTION
The ADS774H is a 12-bit, successive-approximation
analog-to-digital converter (ADC) that uses an
innovative capacitor array (CDAC) implemented in
low-power CMOS technology. This device is a drop-in
replacement for the ADS774, with internal sampling,
much lower power consumption, and the ability to
operate from a single +5V supply.
The ADS774H is complete with an internal clock,
microprocessor interface, three-state outputs, and
internal scaling resistors for input ranges of 0V to
+10V, 0V to +20V, ±5V, or ±10V. The maximum
throughput time is 8.5µs over the full operating
temperature range, including both acquisition and
conversion.
Complete user control over the internal sampling
function facilitates elimination of external sample/hold
amplifiers in most existing designs.
The ADS774H requires +5V, with –15V optional. No
+15V supply is required. Packages include a 28-pin
SO, and 0.3in-wide or 0.6in-wide 28-pin DIPs(1).
(1) DIP-28 package is product preview.
Control Logic
Status
Clock
Comparator
Successive
Approximation
Register
2.5V
Reference
Parallel
Data
Output
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009, Texas Instruments Incorporated



ADS774H
ADS774H
SBAS443 – AUGUST 2009 ................................................................................................................................................................................................ www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
PACKAGE/ORDERING INFORMATION(1)
PRODUCT
ADS774HIB
(High-Grade)
ADS774HI
(Standard-Grade)
SINAD (2)
70dB
70dB
68dB
68dB
LINEARITY
ERROR
±1/2 LSB
PACKAGE-
LEAD
DIP-28 (3)
PACKAGE
DESIGNATOR
NT
NTD
±1/2 LSB
SO-28
DW
±1LSB
DIP-28 (3)
NT
NTD
±1LSB
SO-28
DW
SPECIFIED
TEMPERATURE
RANGE
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
ORDERING
NUMBER
ADS774HIBNT
ADS774HIBNTD
ADS774HIBDW
ADS774HIBEDWR
ADS774HINTD
ADS774HINT
ADS774HIDW
ADS774HIDWR
TRANSPORT
MEDIA, QUANTITY
Rail, 13
Rail, 13
Tape and Reel, 28
Tape and Reel, 1000
Rail, 13
Rail, 13
Tape and Reel, 28
Tape and Reel, 1000
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) SINAD is Signal-to-(Noise + Distortion) expressed in dB.
(3) DIP-28 package is product preview.
ABSOLUTE MAXIMUM RATINGS(1)
Over operating free-air temperature range (unless otherwise noted).
VEE to Digital Common
VDD to Digital Common
Analog Common to Digital Common
Control inputs (CE, CS, A0, 12/8, R/C) to Digital Common
Analog inputs (REF IN, Bipolar Offset, 10V Range) to Analog Common
20V Range to Analog Common
Ref Out
Maximum junction temperature
Power dissipation
Lead temperature (soldering, 10s)
Thermal impedance,
θJA
DIP-28
SO-28
ADS774H
UNIT
+VDD to –16.5
V
0 to +7
V
±1
V
–0.5 to VDD +0.5
V
±16.5
V
±24
V
Indefinite short to common,
momentary short to VDD
+165
°C
1000
mW
+300
°C
100
°C/W
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability.
2
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Copyright © 2009, Texas Instruments Incorporated





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