Loading [MathJax]/jax/output/SVG/fonts/TeX/fontdata.js
Menu
Product
Email
PDF
Order now
ADS981x 18-Bit, 2-MSPS/Ch, Dual, Simultaneous-Sampling ADC With Integrated Analog Front-End
SBASA81B
January 2023 – October 2024
ADS9815
,
ADS9817
PRODUCTION DATA
CONTENTS
SEARCH
ADS981x 18-Bit, 2-MSPS/Ch, Dual, Simultaneous-Sampling ADC With Integrated Analog Front-End
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
Timing Requirements
5.7
Switching Characteristics
5.8
Timing Diagrams
5.9
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
Analog Inputs
6.3.1.1
Input Clamp Protection Circuit
6.3.1.2
Programmable Gain Amplifier (PGA)
6.3.1.3
Wide-Common-Mode Voltage Rejection Circuit
6.3.1.4
Gain Error Calibration
6.3.2
ADC Transfer Function
6.3.3
ADC Sampling Clock Input
6.3.4
Reference
6.3.4.1
Internal Reference Voltage
6.3.4.2
External Reference Voltage
6.3.5
Sample Synchronization
6.3.6
Data Interface
6.3.6.1
Data Clock Output
6.3.6.2
ADC Output Data Randomizer
6.3.6.3
Test Patterns for Data Interface
6.3.6.3.1
Fixed Pattern
6.3.6.3.2
Digital Ramp
6.3.6.3.3
Alternating Test Pattern
6.4
Device Functional Modes
6.4.1
Power-Down
6.4.2
Reset
6.4.3
Initialization Sequence
6.4.4
Normal Operation
6.5
Programming
6.5.1
Register Write
6.5.2
Register Read
6.5.3
Multiple Devices: Daisy-Chain Topology for SPI Configuration
6.5.3.1
Register Write With Daisy-Chain
6.5.3.2
Register Read With Daisy-Chain
7
Register Map
7.1
Register Bank 0
7.2
Register Bank 1
7.3
Register Bank 2
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Parametric Measurement Unit (PMU)
8.2.2
Design Requirements
8.2.3
Detailed Design Procedure
8.2.4
Application Curve
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
9
Device and Documentation Support
9.1
Receiving Notification of Documentation Updates
9.2
Support Resources
9.3
Trademarks
9.4
Electrostatic Discharge Caution
9.5
Glossary
10
Revision History
11
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
RSH|56
MPQF191C
Thermal pad, mechanical data (Package|Pins)
RSH|56
QFND099F
Orderable Information
sbasa81b_oa
sbasa81b_pm
search
No matches found.
Full reading width
Full reading width
Comfortable reading width
Expanded reading width
Card for each section
Card with all content
Data Sheet
ADS981x 18-Bit, 2-MSPS/Ch, Dual, Simultaneous-Sampling ADC With Integrated Analog Front-End
1
Features
8-
channel, 18-bit ADC with analog front-end:
Dual, simultaneous sampling
: 4 × 1 channels
Constant 1MΩ input impedance front-end
Programmable analog input ranges:
±12V, ±10V, ±7V, ±5V, ±3.5V, and ±2.5V
Single-ended and differential inputs
±12V common-mode voltage range
Input overvoltage protection: Up to ±18V
User-selectable analog input bandwidth:
21kHz and 400kHz
Integrated low-drift precision references
ADC reference: 4.096V
2.5V reference output for external circuits
Excellent AC and DC performance at full-throughput:
DNL:
±0.5LSB
, INL:
±0.8LSB
SNR:
92dB
, THD:
–113dB
Power supply:
Analog and digital: 5V and 1.8V
Digital interface: 1.2V to 1.8V
Temperature range: –40°C to +125°C
2
Applications
Parametric measurement units (PMU)
Battery cell formation and test equipment
Data acquisition (DAQ)