SBAS580D
May 2013 – March 2018
ADS7250
,
ADS7850
,
ADS8350
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Functional Block Diagram
4
Revision History
5
Pin Configuration and Functions
Pin 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: All Devices
6.6
Electrical Characteristics: ADS7250
6.7
Electrical Characteristics: ADS7850
6.8
Electrical Characteristics: ADS8350
6.9
Timing Requirements
6.10
Switching Characteristics
6.11
Typical Characteristics: ADS7250
6.12
Typical Characteristics: ADS7850
6.13
Typical Characteristics: ADS8350
6.14
Typical Characteristics: All Devices
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Reference
7.3.2
Analog Input
7.3.2.1
Analog Input Full-Scale Range
7.3.3
ADC Transfer Function
7.4
Device Functional Modes
7.4.1
Serial Interface
7.4.2
Short-Cycling, Frame Abort, and Reconversion Feature
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
DAQ Circuit: Maximum SINAD for a 10-kHz Input Signal at 750-kSPS Throughput
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
ADC Reference Driver
8.2.1.2.2
ADC Input Driver
8.2.1.2.2.1
Input Amplifier Selection
8.2.1.2.2.2
Antialiasing Filter
8.2.1.3
Application Curve
8.2.2
DAQ Circuit: Maximum SINAD for a 100-kHz Input Signal at 750-kSPS Throughput
8.2.2.1
Design Requirements
8.2.2.2
Detailed Design Procedure
8.2.2.2.1
ADC Reference Driver
8.2.2.2.2
ADC Input Driver
8.2.2.3
Application Curve
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Documentation Support
11.1.1
Related Documentation
11.2
Related Links
11.3
Receiving Notification of Documentation Updates
11.4
Community Resources
11.5
Trademarks
11.6
Electrostatic Discharge Caution
11.7
Glossary
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
RTE|16
MPQF149D
Thermal pad, mechanical data (Package|Pins)
RTE|16
QFND298F
Orderable Information
sbas580d_oa
sbas580d_pm
6.13
Typical Characteristics: ADS8350
at T
A
= 25°C, AVDD = 5 V, DVDD = 3.3 V, V
REF
= 2.5 V, and f
DATA
= 750 kSPS (unless otherwise noted)
Figure 32.
Typical DNL
Figure 34.
DNL vs Device Temperature
Figure 36.
Typical FFT at 2-kHz Input
Figure 38.
SNR vs Input Frequency
Figure 40.
SINAD vs Input Frequency
Figure 42.
THD vs Device Temperature
Figure 44.
Offset Error vs Device Temperature
Figure 46.
DC Histogram
Figure 33.
Typical INL
Figure 35.
INL vs Device Temperature
Figure 37.
Typical FFT at 100-kHz Input
Figure 39.
THD vs Input Frequency
Figure 41.
SNR vs Device Temperature
Figure 43.
SINAD vs Device Temperature
Figure 45.
Gain Error vs Device Temperature