ADS1256IDBR

Part: Texas Instruments ADS1255, ADS1256

Type: 24-Bit Analog-to-Digital Converter

Key Specs:

• Resolution: 24 Bits
• Noise-Free Resolution: Up to 23 Bits
• Nonlinearity: ±0.0010% (max)
• Data Output Rate: Up to 30kSPS
• Analog Supply: 5V
• Digital Supply: 1.8V to 3.6V
• Power Dissipation (Normal Mode): As low as 38mW
• Power Dissipation (Standby Mode): 0.4mW
• PGA Input-Referred Noise: 27nV

Features:

• 24 Bits, No Missing Codes - All Data Rates and PGA Settings
• Up to 23 Bits Noise-Free Resolution
• ±0.0010% Nonlinearity (max)
• Data Output Rates to 30kSPS
• Fast Channel Cycling
• One-Shot Conversions with Single-Cycle Settling
• Flexible Input Multiplexer with Sensor Detect
• Four Differential Inputs (ADS1256 only)
• Eight Single-Ended Inputs (ADS1256 only)
• Chopper-Stabilized Input Buffer
• Low-Noise PGA: 27nV Input-Referred Noise
• Self and System Calibration for All PGA Settings
• 5V Tolerant SPI™-Compatible Serial Interface
• Analog Supply: 5V
• Digital Supply: 1.8V to 3.6V
• Power Dissipation: As Low as 38mW in Normal Mode, 0.4mW in Standby Mode

Applications:

• Scientific Instrumentation
• Industrial Process Control
• Medical Equipment
• Test and Measurement
• Weigh Scales

Package:

• SSOP-20 (ADS1255)
• SSOP-28 (ADS1256)

• • 24 Bits, No Missing Codes - All Data Rates and PGA Settings
• -Up to 23 Bits Noise-Free Resolution
• -±0.0010% Nonlinearity (max)
• -Data Output Rates to 30kSPS
• • Fast Channel Cycling
    • - 18.6 Bits Noise-Free (21.3 Effective Bits) at 1.45kHz
• • One-Shot Conversions with Single-Cycle Settling
• • Flexible Input Multiplexer with Sensor Detect
    • - Four Differential Inputs (ADS1256 only) - Eight Single-Ended Inputs (ADS1256 only)
• -Chopper-Stabilized Input Buffer
• -Low-Noise PGA: 27nV Input-Referred Noise
• • Self and System Calibration for All PGA Settings
• -5V Tolerant SPI™-Compatible Serial Interface
• -Analog Supply: 5V
• -Digital Supply: 1.8V to 3.6V
• • Power Dissipation
    • - As Low as 38mW in Normal Mode
    • - 0.4mW in Standby Mode

• -Scientific Instrumentation
• -Industrial Process Control
• -Medical Equipment
• -Test and Measurement
• -Weigh Scales

XTAL2 Serial Interface Mux and Sensor Detect Programmable Digital Filter 4th-Order Modulator ADS1256 Only ADS1256 Only Buffer 1:64 AGND D3 D2 D1 D0/CLKOUT DGND AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 AINCOM XTAL1/CLKIN RESET DRDY SCLK DIN SYNC/PDWN CS DOUT Control General Purpose Digital I/O Clock Generator PGA

VREFP VREFN

AVDD DVDD

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.

SPI is a trademark of Motorola, Inc. All other trademarks are the property of their respective owners.

I don't have access to the datasheet section containing the pin assignments for the ADS1256IDBR. The datasheet excerpt provided only shows a heading "#### PIN ASSIGNMENTS" but no actual pin table or data follows it.

To extract the pinout for the ADS1256IDBR (SSOP-28 package), I would need:

• The actual pin table with pin numbers, names, and functions
• Package diagram or pin configuration details
• Any variant-specific notes

Please provide the complete PIN ASSIGNMENTS section from the ADS1256IDBR datasheet, including the table with pin numbers, names, and descriptions.

All specifications at -40°C to +85°C, AVDD = +5V, DVDD = +1.8V, fCLKIN = 7.68MHz, PGA = 1, and VREF = +2.5V, unless otherwise noted.

over operating free-air temperature range unless otherwise noted(1)

(1) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not implied.

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.

MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001

DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE

28 PINS SHOWN

NOTES: A. All linear dimensions are in millimeters.

• B. This drawing is subject to change without notice.
• C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
• D. Falls within JEDEC MO-150