SLASE67A
January 2015 – August 2019
ADS54J54
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Simplified Schematic
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
6.6
Electrical Characteristics: 250 MSPS Output, 2x Decimation Filter
6.7
Electrical Characteristics: 500 MSPS Output
6.8
Electrical Characteristics: Sample Clock Timing Characteristics
6.9
Electrical Characteristics: Digital Outputs
6.10
Timing Requirements
6.11
Reset Timing
6.12
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Decimation by 2 (250 MSPS Output)
7.3.2
Over-Range Indication
7.3.3
JESD204B Interface
7.3.3.1
JESD204B Initial Lane Alignment (ILA)
7.3.3.2
JESD204B Test Patterns
7.3.3.3
JESD204B Frame Assembly
7.3.4
SYSREF Clocking Schemes
7.3.5
Split-Mode Operation
7.3.6
Eye Diagram Information
7.3.7
Analog Inputs
7.3.8
Clock Inputs
7.3.9
Input Clock Divider
7.3.10
Power-Down Control
7.3.11
Device Configuration
7.3.12
JESD204B Interface Initialization Sequence
7.3.13
Device and Register Initialization
7.4
Device Functional Modes
7.4.1
Operating Modes
7.4.2
Output Format
7.5
Programming
7.5.1
Serial Register Write
7.5.2
Serial Register Readout
7.6
Register Maps
7.6.1
Register Descriptions
7.6.1.1
Register Address 0
Table 9.
Register Address 0 Field Descriptions
7.6.1.2
Register Address 1
Table 10.
Register Address 1 Field Descriptions
7.6.1.3
Register Address 3
Table 11.
Register Address 3 Field Descriptions
7.6.1.4
Register Address 4
Table 12.
Register Address 4 Field Descriptions
7.6.1.5
Register Address 5
Table 13.
Register Address 5 Field Descriptions
Table 14.
Configurations When ENABLE Pin is Low
7.6.1.6
Register Address 6
Table 15.
Register Address 6 Field Descriptions
Table 16.
Configurations When ENABLE Pin is High
7.6.1.7
Register Address 7
Table 17.
Register Address 7 Field Descriptions
7.6.1.8
Register Address 8
Table 18.
Register Address 8 Field Descriptions
7.6.1.9
Register Address 12
Table 19.
Register Address 12 Field Descriptions
7.6.1.10
Register Address 13
Table 20.
Register Address 13 Field Descriptions
7.6.1.11
Register Address 14
Table 21.
Register Address 14 Field Descriptions
7.6.1.12
Register Address 15
Table 22.
Register Address 15 Field Descriptions
7.6.1.13
Register Address 16
Table 23.
Register Address 16 Field Descriptions
7.6.1.14
Register Address 19
Table 24.
Register Address 19 Field Descriptions
7.6.1.15
Register Address 22
Table 25.
Register Address 22 Field Descriptions
7.6.1.16
Register Address 23
Table 26.
Register Address 23 Field Descriptions
7.6.1.17
Register Address 26
Table 27.
Register Address 26 Field Descriptions
7.6.1.18
Register Address 29
Table 28.
Register Address 29 Field Descriptions
7.6.1.19
Register Address 30
Table 29.
Register Address 30 Field Descriptions
Table 30.
Configurations
7.6.1.20
Register Address 31
Table 31.
Register Address 31 Field Descriptions
Table 32.
Configurations
7.6.1.21
Register Address 32
Table 33.
Register Address 32 Field Descriptions
7.6.1.22
Register Address 33
Table 34.
Register Address 33 Field Descriptions
7.6.1.23
Register Address 99
Table 35.
Register Address 99 Field Descriptions
7.6.1.24
Register Address 100
Table 36.
Register Address 100 Field Descriptions
7.6.1.25
Register Address 103
Table 37.
Register Address 103 Field Descriptions
Table 38.
Pre-Emphasis Level is: Decimal Value / 30
7.6.1.26
Register Address 104
Table 39.
Register Address 104 Field Descriptions
7.6.1.27
Register Address 107
Table 40.
Register Address 107 Field Descriptions
Table 41.
Pre-Emphasis Level is: Decimal Value / 30
7.6.1.28
Register Address 108
Table 42.
Register Address 108 Field Descriptions
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.3
Design Requirements
8.4
Detailed Design Procedure
8.4.1
SNR and Clock Jitter
8.5
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.1.1
CML SerDes Transmitter Interface
10.2
Layout Example
11
Device and Documentation Support
11.1
Trademarks
11.2
Electrostatic Discharge Caution
11.3
Glossary
12
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
slase67a_oa
slase67a_pm
1
Features
4 Channel, 14-Bit 500 MSPS ADC
Analog input buffer with high impedance input
Flexible input clock buffer with divide by 1/2/4
1.25 V
PP
Differential full-scale input
JESD204B Serial interface
Subclass 1 compliant up to 5 Gbps
1 Lane Per ADC up to 250 Msps
2 Lanes Per ADC up to 500 Msps
64-Pin QFN Package (9 mm x 9 mm)
Key specifications:
Power dissipation: 875 mW/ch
Input bandwidth (3 dB): 900 MHz
Aperture jitter: 98 fs rms
Channel isolation: 85 dB
Performance at ƒ
in
= 170 MHz at 1.25 V
PP
,
1lane 2x Decimation –1 dBFS
SNR: 67.2 dBFS
SFDR: 85 dBc HD2,3; 95 dBFS non-HD2,3
Performance at ƒ
in
= 370 MHz at 1.25 V
PP
,
2lane no Decimation –1 dBFS
SNR: 64.7 dBFS
SFDR: 75 dBc HD2,3; 83 dBFS non-HD2,3