ADS1230 Converter Datasheet

ADS1230 Datasheet, PDF, Equivalent


Part Number

ADS1230

Description

20-Bit Analog-to-Digital Converter

Manufacture

etcTI

Total Page 30 Pages
Datasheet
Download ADS1230 Datasheet


ADS1230
ADS1230
www.ti.com
SBAS366B – OCTOBER 2006 – REVISED SEPTEMBER 2012
20-Bit Analog-to-Digital Converter
For Bridge Sensors
Check for Samples: ADS1230
FEATURES
1
2 Complete Front-End for Bridge Sensor
• Onboard PGA with Gain of 64 or 128
• Onboard Oscillator
• RMS Noise:
40nV at 10SPS (G = 128)
88nV at 80SPS (G = 128)
• 18-Bit Noise-Free Resolution
• Selectable 10SPS or 80SPS Data Rates
• Simultaneous 50Hz and 60Hz Rejection at
10SPS
• External Voltage Reference up to 5V for
Ratiometric Measurements
• Simple, Pin-Driven Control
• Two-Wire Serial Digital Interface
• Tiny 16-pin TSSOP Package
• Supply Range: 2.7V to 5.3V
• –40°C to +85°C Temperature Range
APPLICATIONS
• Weigh Scales
• Strain Gauges
• Pressure Sensors
• Industrial Process Control
DESCRIPTION
The ADS1230 is a precision 20-bit analog-to-digital
converter (ADC). With an onboard low-noise
programmable gain amplifier (PGA), onboard
oscillator, and precision 20-bit delta-sigma ADC, the
ADS1230 provides a complete front-end solution for
bridge sensor applications including weigh scales,
strain gauges, and pressure sensors.
The low-noise PGA has a gain of 64 or 128,
supporting a full-scale differential input of ±39mV or
±19.5mV, respectively. The delta-sigma ADC has 20-
bit effective resolution and is comprised of a 3rd-
order modulator and 4th-order digital filter. Two data
rates are supported: 10SPS (with both 50Hz and
60Hz rejection) and 80SPS. The ADS1230 can be
clocked by the internal oscillator or an external clock
source. Offset calibration is performed on-demand,
and the ADS1230 can be put in a low-power standby
mode or shut off completely in power-down mode.
All of the features of the ADS1230 are controlled by
dedicated pins; there are no digital registers to
program. Data are output over an easily-isolated
serial interface that connects directly to the MSP430
and other microcontrollers.
The ADS1230 is available in a TSSOP-16 package
and is specified from –40°C to +85°C.
AVDD
CAP
AINP
AINN
Gain = 64 or 128
PGA
REFP REFN DVDD
DS ADC
PDWN
DRDY/DOUT
SCLK
Internal
Oscillator
SPEED
AGND GAIN
CAP
CLKIN
DGND
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
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 © 2006–2012, Texas Instruments Incorporated

ADS1230
ADS1230
SBAS366B – OCTOBER 2006 – REVISED SEPTEMBER 2012
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.
ORDERING INFORMATION
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)
AVDD to AGND
DVDD to DGND
AGND to DGND
Input Current
Analog Input Voltage to AGND
Digital Input Voltage to DGND
Maximum Junction Temperature
Operating Temperature Range
Storage Temperature Range
ADS1230
–0.3 to +6
–0.3 to +6
–0.3 to +0.3
100, Momentary
10, Continuous
–0.3 to AVDD + 0.3
–0.3 to DVDD + 0.3
+150
–40 to +85
–60 to +150
UNIT
V
V
V
mA
mA
V
V
°C
°C
°C
(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 Submit Documentation Feedback
Product Folder Links: ADS1230
Copyright © 2006–2012, Texas Instruments Incorporated


Features ADS1230 www.ti.com SBAS366B – OCTOBE R 2006 – REVISED SEPTEMBER 2012 20-B it Analog-to-Digital Converter For Brid ge Sensors Check for Samples: ADS1230 FEATURES 1 •2 Complete Front-End for Bridge Sensor • Onboard PGA with Gain of 64 or 128 • Onboard Oscillator RMS Noise: 40nV at 10SPS (G = 128) 88 nV at 80SPS (G = 128) • 18-Bit Noise- Free Resolution • Selectable 10SPS or 80SPS Data Rates • Simultaneous 50Hz and 60Hz Rejection at 10SPS • Extern al Voltage Reference up to 5V for Ratio metric Measurements • Simple, Pin-Dri ven Control • Two-Wire Serial Digital Interface • Tiny 16-pin TSSOP Packag e • Supply Range: 2.7V to 5.3V • 40°C to +85°C Temperature Range APPL ICATIONS • Weigh Scales • Strain Ga uges • Pressure Sensors • Industria l Process Control DESCRIPTION The ADS1 230 is a precision 20-bit analog-to-dig ital converter (ADC). With an onboard l ow-noise programmable gain amplifier (P GA), onboard oscillator, and precision 20-bit delta-sigma ADC, the ADS1230 provides a complete front-end .
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