SBAS691B
March 2016 – October 2018
ADS1282-SP
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Simplified Schematic
4
Revision History
5
Description (continued)
6
Pin Configuration and Functions
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Timing Requirements
7.7
Pulse-Sync Timing Requirements
7.8
Reset Timing Requirements
7.9
Read Data Timing Requirements
7.10
Switching Characteristics
7.11
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Noise Performance
8.3.2
Input-Referred Noise
8.3.3
Idle Tones
8.3.4
Operating Mode
8.3.5
Analog Inputs and Multiplexer
8.3.6
PGA (Programmable Gain Amplifier)
8.3.7
ADC
8.3.8
Modulator
8.3.9
Modulator Over-Range
8.3.10
Modulator Input Impedance
8.3.11
Modulator Over-Range Detection (MFLAG)
8.3.12
Voltage Reference Inputs (VREFP, VREFN)
8.3.13
Digital Filter
8.3.13.1
Sinc Filter Stage (Sinx/X)
8.3.13.2
FIR Stage
8.3.13.3
Group Delay and Step Response
8.3.13.3.1
Linear Phase Response
8.3.13.3.2
Minimum Phase Response
8.3.13.4
HPF Stage
8.3.14
Master Clock Input (CLK)
8.3.15
Synchronization (SYNC Pin and Sync Command)
8.3.16
Pulse-Sync Mode
8.3.17
Continuous-Sync Mode
8.3.18
Reset (RESET Pin and Reset Command)
8.3.19
Power-Down (PWDN Pin and Standby Command)
8.3.20
Power-On Sequence
8.3.21
Serial Interface
8.3.21.1
Serial Clock (SCLK)
8.3.21.2
Data Input (DIN)
8.3.21.3
Data Output (DOUT)
8.3.21.4
Data Ready (DRDY)
8.3.22
Data Format
8.3.23
Reading Data
8.3.23.1
Read Data Continuous
8.3.23.2
Read Data by Command
8.3.24
One-Shot Operation
8.4
Device Functional Modes
8.4.1
Modulator Output Mode
8.5
Programming
8.5.1
Commands
8.5.1.1
WAKEUP: Wake-Up from Standby Mode
8.5.1.2
STANDBY: Standby Mode
8.5.1.3
SYNC: Synchronize the A/D Conversion
8.5.1.4
RESET: Reset the Device
8.5.1.5
RDATAC: Read Data Continuous
8.5.1.6
SDATAC: Stop Read Data Continuous
8.5.1.7
RDATA: Read Data By Command
8.5.1.8
RREG: Read Register Data
8.5.1.9
WREG: Write to Register
8.5.1.10
OFSCAL: Offset Calibration
8.5.1.11
GANCAL: Gain Calibration
8.5.2
Calibration Commands
8.5.2.1
OFSCAL Command
8.5.2.2
GANCAL Command
8.5.3
User Calibration
8.5.4
Configuration Guide
8.6
Register Maps
8.6.1
ADS1282-SP Register Map Information
8.6.2
ID Register
Table 13.
ID Register Field Descriptions
8.6.3
Configuration Registers
8.6.3.1
Configuration Register 0
Table 14.
Configuration Register 0 Field Descriptions
8.6.3.2
Configuration Register 1
Table 15.
Configuration Register 1 Field Descriptions
8.6.4
HPF1 and HPF0
8.6.4.1
High-Pass Filter Corner Frequency, Low Byte
8.6.4.2
High-Pass Filter Corner Frequency, High Byte
8.6.5
OFC2, OFC1, OFC0
8.6.5.1
Offset Calibration, Low Byte
8.6.5.2
Offset Calibration, Mid Byte
8.6.5.3
Offset Calibration, High Byte
8.6.6
FSC2, FSC1, FSC0
8.6.6.1
Full-Scale Calibration, Low Byte
8.6.6.2
Full-Scale Calibration, Mid Byte
8.6.6.3
Full-Scale Calibration, High Byte
8.6.7
Offset and Full-Scale Calibration Registers
8.6.7.1
OFC[2:0] Registers
8.6.7.2
FSC[2:0] Registers
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Thermocouple Temperature Sensing Application
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.2
Digital Connection to a Field Programmable Gate Array (FPGA) Device Typical Application
9.2.2.1
Design Requirements
9.2.2.2
Detailed Design Procedure
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.1.1
HPF Transfer Function
12.2
Receiving Notification of Documentation Updates
12.3
Community Resources
12.4
Trademarks
12.5
Electrostatic Discharge Caution
12.6
Glossary
13
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
HKV|28
MCDF016
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbas691b_oa
sbas691b_pm
8
Detailed Description