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ADS1299-x 适用于 EEG 和生物电势测量的低噪声 4 通道、6 通道、8 通道、24 位模数转换器
ZHCS158C
July 2012 – January 2017
ADS1299
,
ADS1299-4
,
ADS1299-6
PRODUCTION DATA.
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ADS1299-x 适用于 EEG 和生物电势测量的低噪声 4 通道、6 通道、8 通道、24 位模数转换器
1
特性
2
应用
3
说明
4
修订历史记录
5
Device 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
7.6
Timing Requirements: Serial Interface
7.7
Switching Characteristics: Serial Interface
7.8
Typical Characteristics
8
Parametric Measurement Information
8.1
Noise Measurements
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Analog Functionality
9.3.1.1
Input Multiplexer
9.3.1.1.1
Device Noise Measurements
9.3.1.1.2
Test Signals (TestP and TestN)
9.3.1.1.3
Temperature Sensor (TempP, TempN)
9.3.1.1.4
Supply Measurements (MVDDP, MVDDN)
9.3.1.1.5
Lead-Off Excitation Signals (LoffP, LoffN)
9.3.1.1.6
Auxiliary Single-Ended Input
9.3.1.2
Analog Input
9.3.1.3
PGA Settings and Input Range
9.3.1.3.1
Input Common-Mode Range
9.3.1.3.2
Input Differential Dynamic Range
9.3.1.3.3
ADC ΔΣ Modulator
9.3.1.3.4
Reference
9.3.2
Digital Functionality
9.3.2.1
Digital Decimation Filter
9.3.2.1.1
Sinc Filter Stage (sinx / x)
9.3.2.2
Clock
9.3.2.3
GPIO
9.3.2.4
ECG and EEG Specific Features
9.3.2.4.1
Input Multiplexer (Rerouting the BIAS Drive Signal)
9.3.2.4.2
Input Multiplexer (Measuring the BIAS Drive Signal)
9.3.2.4.3
Lead-Off Detection
9.3.2.4.3.1
DC Lead-Off
9.3.2.4.3.2
AC Lead-Off (One Time or Periodic)
9.3.2.4.4
Bias Lead-Off
9.3.2.4.5
Bias Drive (DC Bias Circuit)
9.3.2.4.5.1
Bias Configuration with Multiple Devices
9.4
Device Functional Modes
9.4.1
Start
9.4.1.1
Settling Time
9.4.2
Reset (RESET)
9.4.3
Power-Down (PWDN)
9.4.4
Data Retrieval
9.4.4.1
Data Ready (DRDY)
9.4.4.2
Reading Back Data
9.4.5
Continuous Conversion Mode
9.4.6
Single-Shot Mode
9.5
Programming
9.5.1
Data Format
9.5.2
SPI Interface
9.5.2.1
Chip Select (CS)
9.5.2.2
Serial Clock (SCLK)
9.5.2.3
Data Input (DIN)
9.5.2.4
Data Output (DOUT)
9.5.3
SPI Command Definitions
9.5.3.1
Sending Multi-Byte Commands
9.5.3.2
WAKEUP: Exit STANDBY Mode
9.5.3.3
STANDBY: Enter STANDBY Mode
9.5.3.4
RESET: Reset Registers to Default Values
9.5.3.5
START: Start Conversions
9.5.3.6
STOP: Stop Conversions
9.5.3.7
RDATAC: Read Data Continuous
9.5.3.8
SDATAC: Stop Read Data Continuous
9.5.3.9
RDATA: Read Data
9.5.3.10
RREG: Read From Register
9.5.3.11
WREG: Write to Register
9.6
Register Maps
9.6.1
User Register Description
9.6.1.1
ID: ID Control Register (address = 00h) (reset = xxh)
9.6.1.2
CONFIG1: Configuration Register 1 (address = 01h) (reset = 96h)
9.6.1.3
CONFIG2: Configuration Register 2 (address = 02h) (reset = C0h)
9.6.1.4
CONFIG3: Configuration Register 3 (address = 03h) (reset = 60h)
9.6.1.5
LOFF: Lead-Off Control Register (address = 04h) (reset = 00h)
9.6.1.6
CHnSET: Individual Channel Settings (n = 1 to 8) (address = 05h to 0Ch) (reset = 61h)
9.6.1.7
BIAS_SENSP: Bias Drive Positive Derivation Register (address = 0Dh) (reset = 00h)
9.6.1.8
BIAS_SENSN: Bias Drive Negative Derivation Register (address = 0Eh) (reset = 00h)
9.6.1.9
LOFF_SENSP: Positive Signal Lead-Off Detection Register (address = 0Fh) (reset = 00h)
9.6.1.10
LOFF_SENSN: Negative Signal Lead-Off Detection Register (address = 10h) (reset = 00h)
9.6.1.11
LOFF_FLIP: Lead-Off Flip Register (address = 11h) (reset = 00h)
9.6.1.12
LOFF_STATP: Lead-Off Positive Signal Status Register (address = 12h) (reset = 00h)
9.6.1.13
LOFF_STATN: Lead-Off Negative Signal Status Register (address = 13h) (reset = 00h)
9.6.1.14
GPIO: General-Purpose I/O Register (address = 14h) (reset = 0Fh)
9.6.1.15
MISC1: Miscellaneous 1 Register (address = 15h) (reset = 00h)
9.6.1.16
MISC2: Miscellaneous 2 (address = 16h) (reset = 00h)
9.6.1.17
CONFIG4: Configuration Register 4 (address = 17h) (reset = 00h)
10
Applications and Implementation
10.1
Application Information
10.1.1
Unused Inputs and Outputs
10.1.2
Setting the Device for Basic Data Capture
10.1.2.1
Lead-Off
10.1.2.2
Bias Drive
10.1.3
Establishing the Input Common-Mode
10.1.4
Multiple Device Configuration
10.1.4.1
Cascaded Mode
10.1.4.2
Daisy-Chain Mode
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.3
Application Curves
11
Power Supply Recommendations
11.1
Power-Up Sequencing
11.2
Connecting the Device to Unipolar (5 V and 3.3 V) Supplies
11.3
Connecting the Device to Bipolar (±2.5 V and 3.3 V) Supplies
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
器件和文档支持
13.1
文档支持
13.1.1
相关文档
13.2
相关链接
13.3
接收文档更新通知
13.4
社区资源
13.5
商标
13.6
静电放电警告
13.7
Glossary
14
机械、封装和可订购信息
重要声明
封装选项
机械数据 (封装 | 引脚)
PAG|64
MTQF006A
散热焊盘机械数据 (封装 | 引脚)
PAG|64
QFND323A
订购信息
zhcs158c_oa
zhcs158c_pm
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