ADS8509 CONVERTER Datasheet

ADS8509 Datasheet, PDF, Equivalent


Part Number

ADS8509

Description

16-BIT 250-KSPS SERIAL CMOS SAMPLING ANALOG-TO-DIGITAL CONVERTER

Manufacture

Burr-Brown Corporation

Total Page 26 Pages
Datasheet
Download ADS8509 Datasheet


ADS8509
BurrĆBrown Products
from Texas Instruments
ADS8509
SLAS324A – OCTOBER 2004 – REVISED JUNE 2005
16-BIT 250-KSPS SERIAL CMOS SAMPLING ANALOG-TO-DIGITAL CONVERTER
FEATURES
250-kHz Sampling Rate
4-V, 5-V, 10 V, ±3.33-V, ±5-V, and ±10-V Input
Ranges
±2.0 LSB Max INL
±1 LSB Max DNL, 16-Bit No Missing Codes
SPI Compatible Serial Output with
Daisy-Chain (TAG) Feature
Single 5-V Supply
Pin-Compatible With ADS7809 (Low Speed)
and 12-Bit ADS8508/7808
Uses Internal or External Reference
70-mW Typ Power Dissipation at 250 KSPS
20-Pin SO and 28-Pin SSOP Packages
Simple DSP Interface
APPLICATIONS
Industrial Process Control
Data Acquisition Systems
Digital Signal Processing
Medical Equipment
Instrumentation
DESCRIPTION
The ADS8509 is a complete 16-bit sampling
analog-to-digital (A/D) converter using state-of-the-art
CMOS structures. It contains a complete 16-bit,
capacitor-based, successive approximation register
(SAR) A/D converter with sample-and-hold, refer-
ence, clock, and a serial data interface. Data can be
output using the internal clock or can be
synchronized to an external data clock. The ADS8509
also provides an output synchronization pulse for
ease of use with standard DSP processors.
The ADS8509 is specified at a 250-kHz sampling rate
over the full temperature range. Precision resistors
provide various input ranges including ±10 V and 0 V
to 5 V, while the innovative design allows operation
from a single +5-V supply with power dissipation
under 100 mW.
The ADS8509 is available in 20-pin SO and 28-pin
SSOP packages, both fully specified for operation
over the industrial -40°C to 85°C temperature range.
Successive Approximation Register
Clock EXT/INT
R1IN
R2IN
R3IN
9.8 k
4.9 k
2.5 k
CAP
REF
CDAC
10 k
Buffer
4 k
Internal
+2.5 V Ref
Comparator
Serial
Data
Out
&
Control
BUSY
DATACLK
DATA
R/C
SB/BTC
CS
PWRD
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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004–2005, Texas Instruments Incorporated

ADS8509
ADS8509
SLAS324A – OCTOBER 2004 – REVISED JUNE 2005
PACKAGE/ORDERING INFORMATION(1)
www.ti.com
PRODUCT
MINIMUM
RELATIVE
ACCURACY
(LSB)
NO
MISSING
CODE
ADS8509IB
±2
16
ADS8509I
±3
15
MINIMUM
SINAD
(dB)
85
83
SPECIFICATION
TEMPERATURE
RANGE
-40°C to 85°C
-40°C to 85°C
PACKAGE PACKAGE
LEAD
DESIGNATOR
SO-20
SSOP-28
SO-20
SSOP-28
DW
DB
DW
DB
ORDERING
NUMBER
TRANSPORT
MEDIA, QTY
ADS8509IBDW
ADS8509IBDWR
ADS8509IBDB
ADS8509IBDBR
ADS8509IDW
ADS8509IDWR
ADS8509IDB
ADS8509IDBR
Tube, 25
Tape and Reel, 2000
Tube, 50
Tape and Reel, 2000
Tube, 25
Tape and Reel, 2000
Tube, 50
Tape and Reel, 2000
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)(1)
Analog inputs
R1IN
R2IN
R3IN
REF
DGND, AGND2
Ground voltage differences
Digital inputs
VANA
VDIG to VANA
VDIG
Maximum junction temperature
Storage temperature range
Internal power dissipation
Lead temperature (soldering, 1.6 mm from case 10 seconds)
(1) All voltage values are with respect to network ground terminal.
UNIT
±25 V
±25 V
±25 V
+VANA + 0.3 V to AGND2 - 0.3 V
±0.3 V
6V
0.3 V
6V
-0.3 V to +VDIG + 0.3 V
165°C
–65°C to 150°C
700 mW
260°C
2


Features BurrĆBrown Products from Texas Instrume nts ADS8509 SLAS324A – OCTOBER 2004 – REVISED JUNE 2005 16-BIT 250-KSPS SERIAL CMOS SAMPLING ANALOG-TO-DIGITAL CONVERTER FEATURES • • • • • • • • • • • • • • • • 250-kHz Sampling Rate 4-V, 5-V, 10 V, ±3.33-V, ±5-V, and ±10-V Input R anges ±2.0 LSB Max INL ±1 LSB Max DNL , 16-Bit No Missing Codes SPI Compatibl e Serial Output with Daisy-Chain (TAG) Feature Single 5-V Supply Pin-Compatibl e With ADS7809 (Low Speed) and 12-Bit A DS8508/7808 Uses Internal or External R eference 70-mW Typ Power Dissipation at 250 KSPS 20-Pin SO and 28-Pin SSOP Pac kages Simple DSP Interface DESCRIPTION The ADS8509 is a complete 16-bit sampl ing analog-to-digital (A/D) converter u sing state-of-the-art CMOS structures. It contains a complete 16-bit, capacito r-based, successive approximation regis ter (SAR) A/D converter with sample-and -hold, reference, clock, and a serial d ata interface. Data can be output using the internal clock or can be synchronized to an external data clo.
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