SBASA78A
March 2021 – October 2021
ADS7067
PRODUCTION DATA
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Requirements
6.7
Switching Characteristics
6.8
Timing Diagrams
6.9
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Analog Input and Multiplexer
7.3.2
Reference
7.3.2.1
External Reference
7.3.2.2
Internal Reference
7.3.3
ADC Transfer Function
7.3.4
ADC Offset Calibration
7.3.5
Programmable Averaging Filters
7.3.6
CRC on Data Interface
7.3.7
Oscillator and Timing Control
7.3.8
Diagnostic Modes
7.3.8.1
Bit-Walk Test Mode
7.3.8.2
Fixed Voltage Test Mode
7.3.9
Output Data Format
7.3.9.1
Status Flags
7.3.9.2
Output CRC (Device to Host)
7.3.9.3
Input CRC (Host to Device)
7.3.10
Device Programming
7.3.10.1
Enhanced-SPI Interface
7.3.10.2
Daisy-Chain Mode
7.3.10.3
Register Read/Write Operation
7.3.10.3.1
Register Write
7.3.10.3.2
Register Read
7.3.10.3.2.1
Register Read With CRC
7.4
Device Functional Modes
7.4.1
Device Power-Up and Reset
7.4.2
Manual Mode
7.4.3
On-the-Fly Mode
7.4.4
Auto-Sequence Mode
7.5
ADS7067 Registers
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Charge-Kickback Filter and ADC Amplifier
8.2.3
Application Curve
9
Power Supply Recommendations
9.1
AVDD and DVDD Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
Development Support
11.2
Documentation Support
11.2.1
Related Documentation
11.3
Receiving Notification of Documentation Updates
11.4
Support Resources
11.5
Trademarks
11.6
Electrostatic Discharge Caution
11.7
Glossary
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
YBH|16
MPBGAQ3
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbasa78a_oa
sbasa78a_pm
1
Features
Small solution size:
1.62-mm × 1.62-mm WCSP
Space-saving, capless, 2.5-V 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: 90 dB, THD: –100 dB
Improved SNR with programmable averaging filters
INL: ±1 LSB, 16-bit no missing codes
Internal calibration improves offset and drift
High sample rate with no latency output:
800 kSPS
Wide operating range:
ADC input range: 0 V to V
REF
and 2 × V
REF
Analog supply: 3 V to 5.5 V
Digital supply: 1.65 V to 5.5 V
Temperature range: –40°C to +125°C
Enhanced-SPI digital interface:
High-speed, 60-MHz SPI interface