ZHCSIJ3C June   2008  – July 2018 ADS7950 , ADS7951 , ADS7952 , ADS7953 , ADS7954 , ADS7955 , ADS7956 , ADS7957 , ADS7958 , ADS7959 , ADS7960 , ADS7961

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
    1.     详细方框图
  3. 3 说明
  4. 4 修订历史记录
  5. 5 器件比较表
  6. 6 Pin Configuration and Functions
    1.     Pin Functions: TSSOP Packages
    2.     Pin Functions: VQFN Packages
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information: TSSOP
    5. 7.5  Thermal Information: VQFN
    6. 7.6  Electrical Characteristics: ADS7950, ADS7951, ADS7952, ADS7953
    7. 7.7  Electrical Characteristics, ADS7954, ADS7955, ADS7956, ADS7957
    8. 7.8  Electrical Characteristics, ADS7958, ADS7959, ADS7960, ADS7961
    9. 7.9  Timing Requirements
    10. 7.10 Typical Characteristics (All ADS79xx Family Devices)
    11. 7.11 Typical Characteristics (12-Bit Devices Only)
    12. 7.12 Typical Characteristics (12-Bit Devices Only)
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Reference
      2. 8.3.2 Power Saving
    4. 8.4 Device Functional Modes
      1. 8.4.1 Channel Sequencing Modes
      2. 8.4.2 Device Programming and Mode Control
        1. 8.4.2.1 Mode Control Register
        2. 8.4.2.2 Program Registers
      3. 8.4.3 Device Power-Up Sequence
      4. 8.4.4 Operating in Manual Mode
      5. 8.4.5 Operating in Auto-1 Mode
      6. 8.4.6 Operating in Auto-2 Mode
      7. 8.4.7 Continued Operation in a Selected Mode
    5. 8.5 Programming
      1. 8.5.1 Digital Output
      2. 8.5.2 GPIO Registers
      3. 8.5.3 Alarm Thresholds for GPIO Pins
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Analog Input
    2. 9.2 Typical Applications
      1. 9.2.1 Unbuffered Multiplexer Output (MXO)
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curves
      2. 9.2.2 OPA192 Buffered Multiplexer Output (MXO)
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
        3. 9.2.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Examples
  12. 12器件和文档支持
    1. 12.1 文档支持
      1. 12.1.1 相关文档
    2. 12.2 相关链接
    3. 12.3 接收文档更新通知
    4. 12.4 社区资源
    5. 12.5 商标
    6. 12.6 静电放电警告
    7. 12.7 术语表
  13. 13机械、封装和可订购信息

6 Pin Configuration and Functions


DBT Package
38-Pin TSSOP
Top View
ADS7950 ADS7951 ADS7952 ADS7953 ADS7954 ADS7955 ADS7956 ADS7957 ADS7958 ADS7959 ADS7960 ADS7961 tssop38_SLAS605C.gif
DBT Package
30-Pin TSSOP
Top View
ADS7950 ADS7951 ADS7952 ADS7953 ADS7954 ADS7955 ADS7956 ADS7957 ADS7958 ADS7959 ADS7960 ADS7961 tssop30_SLAS605C.gif
RHB Package
32-Pin VQFN
Top View
ADS7950 ADS7951 ADS7952 ADS7953 ADS7954 ADS7955 ADS7956 ADS7957 ADS7958 ADS7959 ADS7960 ADS7961 pos3_las605.gif

RHB Package
32-Pin VQFN
Top View
ADS7950 ADS7951 ADS7952 ADS7953 ADS7954 ADS7955 ADS7956 ADS7957 ADS7958 ADS7959 ADS7960 ADS7961 pos4_las605.gif
RGE Package
24-Pin VQFN
Top View
ADS7950 ADS7951 ADS7952 ADS7953 ADS7954 ADS7955 ADS7956 ADS7957 ADS7958 ADS7959 ADS7960 ADS7961 pos5_las605.gif
RGE Package
24-Pin VQFN
Top View
ADS7950 ADS7951 ADS7952 ADS7953 ADS7954 ADS7955 ADS7956 ADS7957 ADS7958 ADS7959 ADS7960 ADS7961 pos6_las605.gif

Pin Functions: TSSOP Packages

PIN I/O DESCRIPTION
NAME ADS7953
ADS7957
ADS7961		 ADS7952
ADS7956
ADS7960		 ADS7951
ADS7955
ADS7959		 ADS7950
ADS7954
ADS7958
REFERENCE
REFP 4 4 4 4 Analog input Reference input
REFM 3 3 3 3 Analog input Reference ground
ADC ANALOG INPUT
AINP 8 8 8 8 Analog input ADC input signal
AINM 9 9 9 9 Analog input ADC input ground
MULTIPLEXER
MXO 7 7 7 7 Analog output Multiplexer output
Ch0 28 28 20 20 Analog input Analog channel for multiplexer
Ch1 27 27 19 18 Analog input Analog channel for multiplexer
Ch2 26 26 18 14 Analog input Analog channel for multiplexer
Ch3 25 25 17 12 Analog input Analog channel for multiplexer
Ch4 24 24 14 — Analog input Analog channel for multiplexer
Ch5 23 23 13 — Analog input Analog channel for multiplexer
Ch6 22 22 12 — Analog input Analog channel for multiplexer
Ch7 21 21 11 — Analog input Analog channel for multiplexer
Ch8 18 18 — — Analog input Analog channel for multiplexer
Ch9 17 17 — — Analog input Analog channel for multiplexer
Ch10 16 16 — — Analog input Analog channel for multiplexer
Ch11 15 15 — — Analog input Analog channel for multiplexer
Ch12 14 — — — Analog input Analog channel for multiplexer
Ch13 13 — — — Analog input Analog channel for multiplexer
Ch14 12 — — — Analog input Analog channel for multiplexer
Ch15 11 — — — Analog input Analog channel for multiplexer
DIGITAL CONTROL SIGNALS
CS 31 31 23 23 Digital input Chip-select input pin; active low
SCLK 32 32 24 24 Digital input Serial clock input pin
SDI 33 33 25 25 Digital input Serial data input pin
SDO 34 34 26 26 Digital output Serial data output pin
GENERAL-PURPOSE INPUTS/OUTPUTS(1)
GPIO0 37 37 29 29 Digital I/O General-purpose input or output
Alarm Digital output Active high alarm output. For configuration, see the Programming section.
GPIO1 38 38 30 30 Digital I/O General-purpose input or output
Low alarm Digital output Active high output indicating low alarm
GPIO2 1 1 1 1 Digital I/O General-purpose input or output
Range Digital input Selects ADC input range: High (1) -> Range 2 (0 to 2xVREF) / Low (0) -> Range 1 (0 to VREF)
GPIO3 2 2 2 2 Digital I/O General-purpose input or output
PD Digital input Active low power-down input
POWER SUPPLY AND GROUND
+VA 5, 29 5, 29 5, 21 5, 21 — Analog power supply
AGND 6, 10, 19, 20, 30 6, 10, 19, 20, 30 6, 10, 22 6, 10, 22 — Analog ground
+VBD 36 36 28 28 — Digital I/O supply
BDGND 35 35 27 27 — Digital ground
NC PINS
— — 11, 12, 13, 14 15, 16 11, 13, 15, 16, 17, 19 — Pins internally not connected, do not float these pins, connect these pins to ground
(1) These pins have programmable dual functionality. See Table 12 for functionality programming.

Pin Functions: VQFN Packages

PIN I/O DESCRIPTION
PIN NAME ADS7953
ADS7957
ADS7961		 ADS7952
ADS7956
ADS7960		 ADS7951
ADS7955
ADS7959		 ADS7950
ADS7954
ADS7958
REFERENCE
REFP 31 31 24 24 Analog input Reference input
REFM 30 30 23 23 Analog input Reference ground
ADC ANALOG INPUT
AINP 3 3 4 4 Analog input ADC input signal
AINM 4 4 5 5 Analog input ADC input ground
MULTIPLEXER
MXO 2 2 3 3 Analog output Multiplexer output
Ch0 20 18 13 11 Analog input Analog-input channel for multiplexer
Ch1 19 17 12 10 Analog input Analog-input channel for multiplexer
Ch2 18 16 11 9 Analog input Analog-input channel for multiplexer
Ch3 17 15 10 8 Analog input Analog-input channel for multiplexer
Ch4 16 14 9 — Analog input Analog-input channel for multiplexer
Ch5 15 13 8 — Analog input Analog-input channel for multiplexer
Ch6 14 12 7 — Analog input Analog-input channel for multiplexer
Ch7 13 11 6 — Analog input Analog-input channel for multiplexer
Ch8 12 10 — — Analog input Analog-input channel for multiplexer
Ch9 11 9 — — Analog input Analog-input channel for multiplexer
Ch10 10 8 — — Analog input Analog-input channel for multiplexer
Ch11 9 7 — — Analog input Analog-input channel for multiplexer
Ch12 8 — — — Analog input Analog-input channel for multiplexer
Ch13 7 — — — Analog input Analog-input channel for multiplexer
Ch14 6 — — — Analog input Analog-input channel for multiplexer
Ch15 5 — — — Analog input Analog-input channel for multiplexer
DIGITAL CONTROL SIGNALS
CS 23 23 16 16 Digital input Chip-select input pin; active low
SCLK 24 24 17 17 Digital input Serial clock input pin
SDI 25 25 18 18 Digital input Serial data input pin
SDO 26 26 19 19 Digital output Serial data output pin
GENERAL-PURPOSE INPUT/OUTPUT(1)
GPIO0 29 29 22 22 Digital I/O General purpose input or output
Alarm Digital output Active high alarm output. For configuration, see the Programming section.
POWER SUPPLY AND GROUND
+VA 21, 32 21, 32 1, 14 1, 14 — Analog power supply
AGND 1, 22 1, 22 2, 15 2, 15 — Analog ground
+VBD 28 28 21 21 — Digital I/O supply
BDGND 27 27 20 20 — Digital ground
NC PINS
— — 5, 6, 19, 20 — 6, 7, 12, 13 — Pins internally not connected, do not float these pins, connect these pins to ground
(1) This pin has programmable dual functionality. See Table 12 for functionality programming.
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