SBAS520C
February 2011 – June 2017
ADS4122
,
ADS4125
,
ADS4142
,
ADS4145
PRODUCTION DATA.
1
Features
2
Applications
3
Description
4
Revision History
5
Device Family Comparison
6
Pin Configuration and 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: ADS412x
7.6
Electrical Characteristics: ADS414x
7.7
Electrical Characteristics: General
7.8
Digital Characteristics
7.9
Timing Requirements: LVDS and CMOS Modes
7.10
Serial Interface Timing Characteristics
7.11
Reset Timing Requirements
7.12
Timing Characteristics at Lower Sampling Frequencies
7.13
Typical Characteristics: ADS4122
7.14
Typical Characteristics: ADS4125
7.15
Typical Characteristics: ADS4142
7.16
Typical Characteristics: ADS4145
7.17
Typical Characteristics: Common
7.18
Typical Characteristics: Contour
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagrams
8.3
Feature Description
8.3.1
Digital Functions and Low-Latency Mode
8.3.2
Gain for SFDR, SNR Trade-Off
8.3.3
Offset Correction
8.3.4
Power-Down
8.3.4.1
Power-Down Global
8.3.4.2
Standby
8.3.4.3
Output Buffer Disable
8.3.4.4
Input Clock Stop
8.3.5
Output Data Format
8.4
Device Functional Modes
8.4.1
Digital Output Information
8.4.1.1
Output Interface
8.4.1.2
DDR LVDS Outputs
8.4.1.3
LVDS Output Data and Clock Buffers
8.4.1.4
Parallel CMOS Interface
8.4.1.5
CMOS Interface Power Dissipation
8.5
Programming
8.5.1
Device Configuration
8.5.2
Serial Interface
8.5.2.1
Register Initialization
8.5.3
Serial Register Readout
8.6
Register Maps
8.6.1
Serial Register Map
8.6.2
Description of Serial Registers
9
Application and Implementation
9.1
Application Information
9.1.1
Analog Input
9.1.1.1
Drive Circuit Requirements
9.1.1.2
Driving Circuit
9.1.1.3
Input Common-Mode
9.1.2
Clock Input
9.1.3
Input Overvoltage Indication (OVR Pin)
9.1.4
Using the ADS41xx at Low Sampling Rates
9.1.4.1
ADS412x (12-Bit Device)
9.1.4.2
ADS414x (14-Bit Device)
9.1.4.3
Power Consumption at Low Sampling Rates
9.1.4.4
Output Timing at Low Sampling Rates
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Analog Input
9.2.2.2
Clock Driver
9.2.2.3
Digital Interface
9.2.3
Application Curve
10
Power Supply Recommendations
10.1
Sharing DRVDD and AVDD Supplies
10.2
Using DC-DC Power Supplies
10.3
Power Supply Bypassing
11
Layout
11.1
Layout Guidelines
11.1.1
Grounding
11.1.2
Supply Decoupling
11.1.3
Exposed Pad
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.1.1
Device Nomenclature
12.2
Documentation Support
12.2.1
Related Documentation
12.3
Related Links
12.4
Receiving Notification of Documentation Updates
12.5
Community Resources
12.6
Trademarks
12.7
Electrostatic Discharge Caution
12.8
Glossary
13
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
RGZ|48
MPQF123F
Thermal pad, mechanical data (Package|Pins)
RGZ|48
QFND131R
Orderable Information
sbas520c_oa
sbas520c_pm
5
Device Family Comparison
FAMILY
65 MSPS
125 MSPS
160 MSPS
250 MSPS
WITH ANALOG INPUT BUFFERS
200 MSPS
250 MSPS
ADS412x,
12-bit family
ADS4122
ADS4125
ADS4126
ADS4129
—
ADS41B29
ADS414x,
14-bit family
ADS4142
ADS4145
ADS4146
ADS4149
—
ADS41B49
9-Bit
—
—
—
—
—
ADS58B19
11-Bit
—
—
—
—
ADS58B18
—