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ADS7067 Small, 8-Channel, 16-Bit, 800-kSPS SAR ADC With GPIOs
SBASA78B
March 2021 – September 2024
ADS7067
PRODUCTION DATA
CONTENTS
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ADS7067 Small, 8-Channel, 16-Bit, 800-kSPS SAR ADC With GPIOs
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 Input and Multiplexer
6.3.2
Reference
6.3.2.1
External Reference
6.3.2.2
Internal Reference
6.3.3
ADC Transfer Function
6.3.4
ADC Offset Calibration
6.3.5
Programmable Averaging Filters
6.3.6
CRC on Data Interface
6.3.7
Oscillator and Timing Control
6.3.8
Diagnostic Modes
6.3.8.1
Bit-Walk Test Mode
6.3.8.2
Fixed Voltage Test Mode
6.3.9
Output Data Format
6.3.9.1
Status Flags
6.3.9.2
Output CRC (Device to Host)
6.3.9.3
Input CRC (Host to Device)
6.3.10
Device Programming
6.3.10.1
Enhanced-SPI Interface
6.3.10.2
Daisy-Chain Mode
6.3.10.3
Register Read/Write Operation
6.3.10.3.1
Register Write
6.3.10.3.2
Register Read
6.3.10.3.2.1
Register Read With CRC
6.4
Device Functional Modes
6.4.1
Device Power-Up and Reset
6.4.2
Manual Mode
6.4.3
On-the-Fly Mode
6.4.4
Auto-Sequence Mode
6.5
ADS7067 Registers
7
Application and Implementation
7.1
Application Information
7.2
Typical Application
7.2.1
Design Requirements
7.2.2
Detailed Design Procedure
7.2.2.1
Charge-Kickback Filter and ADC Amplifier
7.2.3
Application Curve
7.3
Power Supply Recommendations
7.3.1
AVDD and DVDD Supply Recommendations
7.4
Layout
7.4.1
Layout Guidelines
7.4.2
Layout Example
8
Device and Documentation Support
8.1
Device Support
8.1.1
Development Support
8.2
Documentation Support
8.2.1
Related Documentation
8.3
Receiving Notification of Documentation Updates
8.4
Support Resources
8.5
Trademarks
8.6
Electrostatic Discharge Caution
8.7
Glossary
9
Revision History
10
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
RTE|16
MPQF149D
YBH|16
MPBGAQ3
Thermal pad, mechanical data (Package|Pins)
RTE|16
QFND525B
Orderable Information
sbasa78b_oa
sbasa78b_pm
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Data Sheet
ADS7067
Small, 8-Channel, 16-Bit,
800-kSPS
SAR ADC With GPIOs
1
Features
Package options:
1.636mm × 1.636mm DSBGA and 3mm × 3mm WQFN
Space-saving, capless, 2.5V internal reference
8 channels configurable as any combination of:
Up to 8 analog inputs, digital inputs, or digital outputs
Programmable averaging filters:
Programmable sample size for averaging
Averaging with internal conversions
20-bit resolution for average output
Low-leakage multiplexer with channel sequencer:
Manual mode
On-the-fly mode
Auto-sequence mode
Excellent AC and DC performance:
SNR: 90dB, THD: –100dB
Improved SNR with programmable averaging filters
INL: ±1LSB, 16-bit no missing codes
Internal calibration improves offset and drift
High sample rate with no latency output: 800kSPS
Wide operating range:
ADC input range: 0V to V
REF
and 2 × V
REF
Analog supply: 3V to 5.5V
Digital supply: 1.65V to 5.5V
Temperature range: –40°C to +125°C
Enhanced-SPI digital interface:
High-speed, 60MHz SPI interface
