ADS1211 CONVERTER Datasheet

ADS1211 Datasheet, PDF, Equivalent


Part Number

ADS1211

Description

24-Bit ANALOG-TO-DIGITAL CONVERTER

Manufacture

Burr-Brown

Total Page 30 Pages
Datasheet
Download ADS1211 Datasheet


ADS1211
ADS1210
ADS1211
ADS1210
ADS1211
ADS1211
ADS1210
ADS1211
SBAS034B – JANUARY 1996 – REVISED SEPTEMBER 2005
24-Bit ANALOG-TO-DIGITAL CONVERTER
FEATURES
q DELTA-SIGMA A/D CONVERTER
q 23 BITS EFFECTIVE RESOLUTION AT 10Hz
AND 20 BITS AT 1000Hz
q DIFFERENTIAL INPUTS
q PROGRAMMABLE GAIN AMPLIFIER
q FLEXIBLE SPI-COMPATIBLE SSI
INTERFACE WITH 2-WIRE MODE
q PROGRAMMABLE CUT-OFF FREQUENCY
UP TO 15.6kHz
q INTERNAL/EXTERNAL REFERENCE
q ON-CHIP SELF-CALIBRATION
q ADS1211 INCLUDES 4-CHANNEL MUX
APPLICATIONS
q INDUSTRIAL PROCESS CONTROL
q INSTRUMENTATION
q BLOOD ANALYSIS
q SMART TRANSMITTERS
q PORTABLE INSTRUMENTS
q WEIGH SCALES
q PRESSURE TRANSDUCERS
AGND AVDD REFOUT
DESCRIPTION
The ADS1210 and ADS1211 are precision, wide dynamic
range, delta-sigma Analog-to-Digital (A/D) converters with
24-bit resolution operating from a single +5V supply. The
differential inputs are ideal for direct connection to transduc-
ers or low-level voltage signals. The delta-sigma architec-
ture is used for wide dynamic range and to ensure 22 bits
of no-missing-code performance. An effective resolution of
23 bits is achieved through the use of a very low-noise input
amplifier at conversion rates up to 10Hz. Effective resolu-
tions of 20 bits can be maintained up to a sample rate of
1kHz through the use of the unique Turbo modulator mode
of operation. The dynamic range of the converters is further
increased by providing a low-noise programmable gain
amplifier with a gain range of 1 to 16 in binary steps.
The ADS1210 and ADS1211 are designed for high resolution
measurement applications in smart transmitters, industrial
process control, weigh scales, chromatography, and portable
instrumentation. Both converters include a flexible synchro-
nous serial interface that is SPI-compatible and also offers a
two-wire control mode for low cost isolation.
The ADS1210 is a single-channel converter and is offered in
both 18-pin DIP and 18-lead SOIC packages. The ADS1211
includes a 4-channel input multiplexer and is available in 24-
pin DIP, 24-lead SOIC, and 28-lead SSOP packages.
REFIN
VBIAS
XIN XOUT
AIN1P
AIN1N
AIN2P
AIN2N
AIN3P
AIN3N
AIN4P
AIN4N
MUX
AINP
AINN
+2.5V
Reference
+3.3V Bias
Generator
Clock Generator
PGA
Second-Order
∆∑
Modulator
Third-Order
Digital Filter
Micro Controller
Instruction Register
Command Register
Data Output Register
Offset Register
Full-Scale Register
Modulator Control
Serial Interface
DGND
DVDD
SCLK
SDIO
SDOUT
ADS1211 Only
ADS1210/11
DSYNC
CS MODE DRDY
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.
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 © 1996-2005, Texas Instruments Incorporated

ADS1211
SPECIFICATIONS
All specifications TMIN to TMAX, AVDD = DVDD = +5V, fXIN = 10MHz, programmable gain amplifier setting of 1, Turbo Mode Rate of 1, REFOUT disabled,VBIAS disabled,
and external 2.5V reference, unless otherwise specified.
PARAMETER
ANALOG INPUT
Input Voltage Range(1)
Input Impedance
Programmable Gain Amplifier
Input Capacitance
Input Leakage Current
SYSTEMS PERFORMANCE
Resolution
No Missing Codes
Integral Linearity
Unipolar Offset Error(4)
Unipolar Offset Drift(6)
Gain Error(4)
Gain Error Drift(6)
Common-Mode Rejection(9)
Normal-Mode Rejection
Output Noise
Power Supply Rejection
VOLTAGE REFERENCE
Internal Reference (REFOUT)
Drift
Noise
Load Current
Output Impedance
External Reference (REFIN)
Load Current
VBIAS Output
Drift
Load Current
DIGITAL INPUT/OUTPUT
Logic Family
Logic Level: (all except XIN)
VIH
VIL
VOH
VOL
XIN Input Levels: VIH
VIL
XIN Frequency Range (fXIN)
Output Data Rate (fDATA)
Data Format
SYSTEM CALIBRATION
Offset and Full-Scale Limits
VFS – | VOS |
CONDITIONS
ADS1210U, P/ADS1211U, P, E
MIN TYP MAX
UNITS
With VBIAS(2)
G = Gain, TMR = Turbo Mode Rate
User Programmable: 1, 2, 4, 8, or 16
At +25°C
At TMIN to TMAX
fDATA = 60Hz
fDATA = 60Hz
fDATA = 1000Hz, TMR of 16
At DC, +25°C
At DC, TMIN to TMAX
50Hz, fDATA = 50Hz(7)
60Hz, fDATA = 60Hz(7)
50Hz, fDATA = 50Hz(7)
60Hz, fDATA = 60Hz(7)
DC, 50Hz, and 60Hz
0 +5
–10 +10
4/(G • TMR)(3)
1 16
8
5 50
1
24
22
±0.0015
±0.0015
See Note 5
1
See Note 5
1
100 115
90 115
160
160
100
100
See Typical Performance Curves
65
Source or Sink
Using Internal Reference
Source or Sink
2.4
2.0
3.15
2.5 2.6
25
50
1
2
3.0
2.5
3.3 3.45
50
10mA
IIH = +5µA
IIL = +5µA
IOH = 2 TTL Loads
IOL = 2 TTL Loads
User Programmable
fXIN = 500kHz
User Programmable
2.0
–0.3
2.4
3.5
–0.3
0.5
2.4
0.12
TTL Compatible CMOS
DVDD +0.3
0.8
Two’s Complement
or Offset Binary
0.4
DVDD +0.3
0.8
10
15,625
781
VFS = Full-Scale Differential Voltage(8) 0.7 • (2 • REFIN)/G
VOS = Offset Differential Voltage(8)
1.3 • (2 • REFIN)/G
V
V
M
pF
pA
nA
Bits
Bits
%FSR
%FSR
µV/°C
µV/°C
dB
dB
dB
dB
dB
dB
dB
V
ppm/°C
µVp-p
mA
V
µA
V
ppm/°C
V
V
V
V
V
V
MHz
Hz
Hz
2 ADS1210, ADS1211
www.ti.com
SBAS034B


Features ADS1210 ADS1211 ADS1210 ADS1211 ADS1 211 ADS1210 ADS1211 SBAS034B – JANU ARY 1996 – REVISED SEPTEMBER 2005 24- Bit ANALOG-TO-DIGITAL CONVERTER FEATUR ES q DELTA-SIGMA A/D CONVERTER q 23 BIT S EFFECTIVE RESOLUTION AT 10Hz AND 20 B ITS AT 1000Hz q DIFFERENTIAL INPUTS q P ROGRAMMABLE GAIN AMPLIFIER q FLEXIBLE S PI™-COMPATIBLE SSI INTERFACE WITH 2-W IRE MODE q PROGRAMMABLE CUT-OFF FREQUEN CY UP TO 15.6kHz q INTERNAL/EXTERNAL RE FERENCE q ON-CHIP SELF-CALIBRATION q AD S1211 INCLUDES 4-CHANNEL MUX APPLICATIO NS q INDUSTRIAL PROCESS CONTROL q INSTR UMENTATION q BLOOD ANALYSIS q SMART TRA NSMITTERS q PORTABLE INSTRUMENTS q WEIG H SCALES q PRESSURE TRANSDUCERS AGND AV DD REFOUT DESCRIPTION The ADS1210 and ADS1211 are precision, wide dynamic ran ge, delta-sigma Analog-to-Digital (A/D) converters with 24-bit resolution oper ating from a single +5V supply. The dif ferential inputs are ideal for direct c onnection to transducers or low-level v oltage signals. The delta-sigma architecture is used for wide dynamic.
Keywords ADS1211, datasheet, pdf, Burr-Brown, 24-Bit, ANALOG-TO-DIGITAL, CONVERTER, DS1211, S1211, 1211, ADS121, ADS12, ADS1, Equivalent, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute




@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)