Texas Instruments ADS79 EVM-PDK Series, Manual

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ADS7950, ADS7951, ADS7952, ADS7953, ADS7954, ADS7955
ADS7956, ADS7957, ADS7958, ADS7959, ADS7960, ADS7961
SLAS605C – JUNE 2008 – REVISED JULY 2018 www.ti.com
Product Folder Links: ADS7950 ADS7951 ADS7952 ADS7953 ADS7954 ADS7955 ADS7956 ADS7957 ADS7958
ADS7959 ADS7960 ADS7961
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Copyright © 2008–2018, Texas Instruments Incorporated
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History ..................................................... 2
5 Device Comparison Table ..................................... 5
6 Pin Configuration and Functions ......................... 5
7 Specifications ....................................................... 10
7.1 Absolute Maximum Ratings .................................... 10
7.2 ESD Ratings............................................................ 10
7.3 Recommended Operating Conditions ..................... 10
7.4 Thermal Information: TSSOP.................................. 11
7.5 Thermal Information: VQFN .................................... 11
7.6 Electrical Characteristics: ADS7950, ADS7951,
ADS7952, ADS7953 ................................................ 12
7.7 Electrical Characteristics, ADS7954, ADS7955,
ADS7956, ADS7957 ................................................ 14
7.8 Electrical Characteristics, ADS7958, ADS7959,
ADS7960, ADS7961 ................................................ 15
7.9 Timing Requirements .............................................. 17
7.10 Typical Characteristics (All ADS79xx Family
Devices) ................................................................... 20
7.11 Typical Characteristics (12-Bit Devices Only)....... 21
7.12 Typical Characteristics (12-Bit Devices Only)....... 27
8 Detailed Description ............................................ 28
8.1 Overview ................................................................. 28
8.2 Functional Block Diagram ....................................... 29
8.3 Feature Description................................................. 29
8.4 Device Functional Modes........................................ 29
8.5 Programming........................................................... 41
9 Application and Implementation ........................ 46
9.1 Application Information............................................ 46
9.2 Typical Applications ................................................ 48
10 Power Supply Recommendations ..................... 51
11 Layout ................................................................... 52
11.1 Layout Guidelines ................................................. 52
11.2 Layout Examples................................................... 52
12 Device and Documentation Support ................. 54
12.1 Documentation Support ........................................ 54
12.2 Related Links ........................................................ 54
12.3 Receiving Notification of Documentation Updates 54
12.4 Community Resources.......................................... 54
12.5 Trademarks ........................................................... 54
12.6 Electrostatic Discharge Caution ............................ 55
12.7 Glossary ................................................................ 55
13 Mechanical, Packaging, and Orderable
Information ........................................................... 55
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (July 2015) to Revision C Page
• Changed 0 to 2.5 V and 0 to 5 V to 0 to V
REF
and 0 to 2 x V
REF
in Input Range Features bullet ......................................... 1
• Changed GPIO Features bullet ............................................................................................................................................. 1
• Changed Optical Line Card Monitoring and Multi-Channel, General-Purpose Signal Monitoring Applications bullets.......... 1
• Changed (0 V to 2.5 V and 0 V to 5 V) to (0 V to V
REF
and 0 V to 2 × V
REF
) in Description section ..................................... 1
• Deleted Companion Products table........................................................................................................................................ 5
• Changed RGE to RHB for two 32-pin VQFN pin diagrams ................................................................................................... 5
• Added 30-pin DBT package .................................................................................................................................................. 5
• Changed I/O column of Pin Functions: TSSOP Packages table to show full definition instead of abbreviation ................... 6
• Added active low to definition of CS pin in Pin Functions: TSSOP Packages table .............................................................. 7
• Changed pin name and description of Alarm pin in Pin Functions: TSSOP Packages table ............................................... 7
• Added settings to description of Range pin in Pin Functions: TSSOP Packages table: added (1) to high and (0) to low .... 7
• Added active low to description of CS pin in Pin Functions: VQFN Packages table ............................................................. 8
• Changed pin name and description of Alarm pin in Pin Functions: VQFN Packages table .................................................. 9
• Changed value of Input current to any pin except supply pins row from ±10 mA (max) to –10 mA (min) and 10 mA
(max) in Absolute Maximum Ratings table ........................................................................................................................... 10
• Changed VBD = 1.7 V to 5.25 V to VBD = 1.7 V to +VA in condition statement................................................................. 12
• Changed minimum specification from –1 LSB to –0.99 LSB in first row of Differential linearity parameter......................... 12
• Added input to Reference input resistance parameter name ............................................................................................... 13
• Changed maximum specification from FFC Hex to 4092 LSB in Alarm Setting parameters .............................................. 13
• Changed unit from Numbers to Conversion in Invalid conversions after power up or reset parameter ............................. 13
• Changed VBD = 1.7 V to 5.25 V to VBD = 1.7 V to +VA in condition statement ................................................................ 14