SLAS904F
October 2012 – May 2016
ADS42LB49
,
ADS42LB69
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: ADS42LB69 (16-Bit)
6.6
Electrical Characteristics: ADS42LB49 (14-Bit)
6.7
Electrical Characteristics: General
6.8
Digital Characteristics
6.9
Timing Requirements: General
6.10
Timing Requirements: DDR LVDS Mode
6.11
Timing Requirements: QDR LVDS Mode
6.12
Typical Characteristics: ADS42LB69
6.13
Typical Characteristics: ADS42LB49
6.14
Typical Characteristics: Common
6.15
Typical Characteristics: Contour
6.15.1
Spurious-Free Dynamic Range (SFDR): General
6.15.2
Signal-to-Noise Ratio (SNR): ADS42LB69
6.15.3
Signal-to-Noise Ratio (SNR): ADS42LB49
7
Parameter Measurement Information
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagrams
8.3
Feature Description
8.3.1
Digital Gain
8.3.2
Input Clock Divider
8.3.3
Overrange Indication
8.3.3.1
OVR in a QDR Pinout
8.3.3.2
OVR in a DDR Pinout
8.3.3.3
Programming Threshold for Fast OVR
8.3.4
LVDS Buffer
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
QDR LVDS Outputs
8.5
Programming
8.5.1
Device Configuration
8.5.2
Details of Serial Interface
8.5.2.1
Register Initialization
8.5.2.2
Serial Register Write
8.5.2.3
Serial Register Readout
8.6
Register Maps
8.6.1
Description of Serial Interface Registers
8.6.1.1
Register 6 (offset = 06h) [reset = 80h]
8.6.1.2
Register 7 (offset = 07h) [reset = 00h]
8.6.1.3
Register 8 (offset = 08h) [reset = 00h]
8.6.1.4
Register B (offset = 0Bh) [reset = 00h]
8.6.1.5
Register C (offset = 0Ch) [reset = 00h]
8.6.1.6
Register D (offset = 0Dh) [reset = 6Ch]
8.6.1.7
Register F (offset = 0Fh) [reset = 00h]
8.6.1.8
Register 10 (offset = 10h) [reset = 00h]
8.6.1.9
Register 11 (offset = 11h) [reset = 00h]
8.6.1.10
Register 12 (offset = 12h) [reset = 00h]
8.6.1.11
Register 13 (offset = 13h) [reset = 00h]
8.6.1.12
Register 14 (offset = 14h) [reset = 00h]
8.6.1.13
Register 15 (offset = 15h) [reset = 00h]
8.6.1.14
Register 16 (offset = 16h) [reset = 00h]
8.6.1.15
Register 17 (offset = 17h) [reset = 00h]
8.6.1.16
Register 18 (offset = 18h) [reset = 00h]
8.6.1.17
Register 1F (offset = 1Fh) [reset = 7Fh]
8.6.1.18
Register 20 (offset = 20h) [reset = 00h]
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Analog Input
9.2.2.1.1
Drive Circuit Requirements
9.2.2.1.2
Driving Circuit
9.2.2.1.3
Using the ADS42LBx9 In Time-Domain, Low-Frequency Pulse Applications
9.2.2.2
Clock Input
9.2.2.3
SNR and Clock Jitter
9.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Related Links
12.2
Community Resources
12.3
Trademarks
12.4
Electrostatic Discharge Caution
12.5
Glossary
13
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
RGC|64
MPQF125F
Thermal pad, mechanical data (Package|Pins)
RGC|64
QFND123N
Orderable Information
slas904f_oa
7 Parameter Measurement Information
Figure 72. Timing Diagram for SYNCINP and SYNCINM Inputs
Figure 73. DDR LVDS Output Timing Diagram
Figure 74. QDR LVDS Output Timing Diagram
1.
NOINDENT:
With an external 100-Ω termination.
Figure 75. DDR LVDS Output Voltage Levels