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Burr-Brown Corporation

ADS8323 Datasheet Preview

ADS8323 Datasheet

16-Bit/ 500kSPS/ microPower Sampling ANALOG-TO-DIGITAL CONVERTER

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ADS8323 ®
ADS8323
SBAS224B DECEMBER 2001 REVISED MAY 2002
16-Bit, 500kSPS, microPower Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q HIGH-SPEED PARALLEL INTERFACE
q 500kSPS SAMPLING RATE
q LOW POWER: 85mW at 500kSPS
q BIPOLAR INPUT RANGE
q TQFP-32 PACKAGE
APPLICATIONS
q HIGH-SPEED DATA AQUISITION
q OPTICAL POWER MONITORING
q MOTOR CONTROL
q ATE
DESCRIPTION
The ADS8323 is a 16-bit, 500kSPS Analog-to-Digital Con-
verter (ADC) with an internal 2.5V reference. The device
includes a 16-bit capacitor-based SAR ADC with inherent
sample-and-hold. The ADS8323 offers a full 16-bit interface,
or an 8-bit option where data is read using two read cycles.
The ADS8323 is available in a TQFP-32 package and is
specified over the industrial –40°C to +85°C temperature
range.
SAR
+IN
IN
REFIN
REFOUT
ADS8323
S/H Amp
CDAC
Comparator
Internal
+2.5V Ref
Output Latches
and
Three State
Drivers
BYTE
Parallel
Data
Output
Conversion
and Control
Logic
CLOCK
CONVST
CS
RD
BUSY
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.
PRODUCTION DATA information is 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.
www.ti.com
Copyright © 2001, Texas Instruments Incorporated




Burr-Brown Corporation

ADS8323 Datasheet Preview

ADS8323 Datasheet

16-Bit/ 500kSPS/ microPower Sampling ANALOG-TO-DIGITAL CONVERTER

No Preview Available !

PACKAGE/ORDERING INFORMATION
PRODUCT
ADS8323Y
"
ADS8323YB
"
MAXIMUM
INTEGRAL
LINEARITY
ERROR (LSB)
±8
"
±6
"
NO
MISSING
CODES
ERROR (LSB)
PACKAGE-LEAD
14 TQFP-32
""
15 TQFP-32
""
PACKAGE
DESIGNATOR(1)
PBS
"
PBS
"
SPECIFICATION
TEMPERATURE
RANGE
40°C to 85°C
"
40°C to 85°C
"
NOTE: (1) For the most current specifications and package information, refer to our web site at www.ti.com.
ORDERING
NUMBER
ADS8323Y/ 250
ADS8323Y/ 2K
ADS8323YB/250
ADS8323YB/2K
TRANSPORT
MEDIA, QUANTITY
Tape and Reel, 250
Tape and Reel, 2000
Tape and Reel, 250
Tape and Reel, 2000
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings over operating free-air temperature (unless
otherwise noted)(1)
Supply Voltage, DGND to DVDD .............................................................. 0.3V to 6V
Supply Voltage, AGND to AVDD ............................................................... 0.3V to 6V
Analog Input Voltage Range ..................... AGND - 0.3V to AVDD + 0.3V
Reference Input Voltage ........................... AGND - 0.3V to AVDD + 0.3V
Digital Input Voltage Range ...................... DGND - 0.3V to DVDD + 0.3V
Ground Voltage Differences, AGND to DGND ................................ ±0.3V
Voltage Differences, DVDD to AGND ..................................... 0.3V to 6V
Power Dissipation .......................................................................... 850mW
Operating Virtual Junction Temperature Range, TJ ........ 40°C to 150°C
Operating Free-Air Temperature Range, TA ...................... 40°C to 85°C
Storage Temperature Range, TSTG .................................. 65°C to 150°C
Lead Temperature 1.6mm (1/16 inch) from Case for 10sec ..................... 260°C
NOTE: (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 under "recommended operating conditions" is not implied. Exposure
to absolute-maximum-rated conditions of extended periods may affect device
reliability.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas
Instruments recommends that all integrated circuits be handled
with appropriate precautions. Failure to observe proper han-
dling and installation procedures can cause damage.
ESD damage can range from subtle performance degrada-
tion 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.
RECOMMENDED OPERATING CONDITIONS
POWER SUPPLY
Supply Voltage AVDD(1)
DVDD(1)
ANALOG/REFERENCE INPUTS
Differential analog input voltage
(IN+ to IN)
External Reference Voltage
MIN
4.75
4.75
REFIN
1.5
TYP
5.0
5.0
2.5
MAX
5.25
5.25
UNIT
V
V
+REFIN
2.55
V
V
NOTE: (1) The voltage difference between AVDD and DVDD terminals cannot
exceed 0.3V to maintain performance specifications.
DISSIPATION RATING TABLE
PACKAGE
TA 25°C
POWER
RATING
DERATING
FACTOR
ABOVE
TA = 25°C(1)
TQFP-32
1636mW 13.09mW/°C
TA = 70°C
POWER
RATING
1047mW
TA = 85°C
POWER
RATING
850mW
NOTE: (1) This is the inverse of the traditional junction-to-ambient thermal
resistance (RθJA). Thermal resistances are not production tested and are for
informational purposes only.
EQUIVALENT INPUT CIRCUIT
AVDD
AIN
RON
20
C(SAMPLE)
20pF
DVDD
DIN
AGND
Diode Turn-On Voltage: 0.35V
Equivalent Analog Input Circuit
DGND
Equivalent Digital Input Circuit
2 ADS8323
www.ti.com
SBAS224B


Part Number ADS8323
Description 16-Bit/ 500kSPS/ microPower Sampling ANALOG-TO-DIGITAL CONVERTER
Maker Burr-Brown Corporation
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ADS8323 Datasheet PDF






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