SBAS430F
January 2009 – April 2018
DAC7568
,
DAC8168
,
DAC8568
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Block Diagram
4
Revision History
5
Device Comparison Table
6
Pin Configuration and Functions
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
Electrical Characteristics
7.3
Timing Requirements
7.4
Typical Characteristics: Internal Reference
7.5
Typical Characteristics: DAC at AVDD = 5.5 V
7.6
Typical Characteristics: DAC at AVDD = 3.6 V
7.7
Typical Characteristics: DAC at AVDD = 2.7 V
8
Detailed Description
8.1
Functional Block Diagram
8.2
Feature Description
8.2.1
Digital-to-Analog Converter (DAC)
8.2.2
Resistor String
8.2.3
Output Amplifier
8.2.4
Internal Reference
8.2.5
Serial Interface
8.2.6
Input Shift Register
Table 1.
DAC8568 Data Input Register Format
Table 2.
DAC8168 Data Input Register Format
Table 3.
DAC7568 Data Input Register Format
8.2.7
SYNC Interrupt
8.2.8
Power-on Reset to Zero Scale or Midscale
8.2.9
Clear Code Register and CLR Pin
8.2.10
Software Reset Function
8.2.11
Operating Examples: DAC7568/DAC8168/DAC8568
Table 4.
1st: Write to Data Buffer A:
Table 5.
2nd: Write to Data Buffer B:
Table 6.
3rd: Write to Data Buffer G:
Table 7.
4th: Write to Data Buffer H and Simultaneously Update all DACs:
Table 8.
1st: Write to Data Buffer C and Load DAC C: DAC C Output Settles to Specified Value Upon Completion:
Table 9.
2nd: Write to Data Buffer D and Load DAC D: DAC D Output Settles to Specified Value Upon Completion:
Table 10.
3rd: Write to Data Buffer E and Load DAC E: DAC E Output Settles to Specified Value Upon Completion:
Table 11.
4th: Write to Data Buffer F and Load DAC F: DAC F Output Settles to Specified Value Upon Completion:
Table 12.
1st: Write Power-Down Command to DAC Channel A and DAC Channel B: DAC A and DAC B to 1kΩ.
Table 13.
2nd: Write Power-Down Command to DAC Channel H: DAC H to 1kΩ.
Table 14.
3rd: Write Power-Down Command to DAC Channel C and DAC Channel D: DAC C and DAC D to 100kΩ.
Table 15.
4th: Write Power-Down Command to DAC Channel F: DAC F to 100kΩ.
Table 16.
1st: Write Sequence for Enabling the DAC7568, DAC8168, and DAC8568 Internal Reference All the Time:
Table 17.
2nd: Write Sequence to Power-Down All DACs to High-Impedance:
Table 18.
1st: Write Sequence for Disabling the DAC7568, DAC8168, and DAC8568 Internal Reference All the Time (after this sequence, these devices require an external reference source to function):
Table 19.
2nd: Write Sequence to Write Specified Data to All DACs:
8.3
Device Functional Modes
8.3.1
Enable/Disable Internal Reference
8.3.1.1
Static Mode
Table 20.
Write Sequence for Enabling Internal Reference (Static Mode) (Internal Reference Powered On—08000001h)
Table 21.
Write Sequence for Disabling Internal Reference (Static Mode) (Internal Reference Powered On—08000000h)
8.3.1.2
Flexible Mode
Table 22.
Write Sequence for Enabling Internal Reference (Flexible Mode) (Internal Reference Powered On—09080000h)
Table 23.
Write Sequence for Enabling Internal Reference (Flexible Mode) (Internal Reference Always Powered On—090A0000h)
Table 24.
Write Sequence for Disabling Internal Reference (Flexible Mode) (Internal Reference Always Powered Down—090C0000h)
Table 25.
Write Sequence for Switching from Flexible Mode to Static Mode for Internal Reference (Internal Reference Always Powered Down—09000000h)
8.3.2
LDAC Functionality
8.3.3
Power-Down Modes
8.3.3.1
DAC Power-Down Commands
9
Application and Implementation
9.1
Application Information
9.2
Typical Applications - Microprocessor Interfacing
9.2.1
DAC7568/DAC8168/DAC8568 to an 8051 Interface
9.2.1.1
Detailed Design Procedure
9.2.1.1.1
Internal Reference
9.2.1.1.1.1
Supply Voltage
9.2.1.1.1.2
Temperature Drift
9.2.1.1.1.3
Noise Performance
9.2.1.1.1.4
Load Regulation
9.2.1.1.1.5
Long-Term Stability
9.2.1.1.1.6
Thermal Hysteresis
9.2.1.1.2
DAC Noise Performance
9.2.1.1.3
Bipolar Operation Using The DAC7568/DAC8168/DAC8568
9.2.2
DAC7568/DAC8168/DAC8568 to Microwire Interface
9.2.3
DAC7568/DAC8168/DAC8568 to 68HC11 Interface
10
Layout
10.1
Layout Guidelines
11
Device and Documentation Support
11.1
Device Support
11.1.1
Device Nomenclature
11.1.1.1
Static Performance
11.1.1.1.1
Resolution
11.1.1.1.2
Least Significant Bit (LSB)
11.1.1.1.3
Most Significant Bit (MSB)
11.1.1.1.4
Relative Accuracy or Integral Nonlinearity (INL)
11.1.1.1.5
Differential Nonlinearity (DNL)
11.1.1.1.6
Full-Scale Error
11.1.1.1.7
Offset Error
11.1.1.1.8
Zero-Code Error
11.1.1.1.9
Gain Error
11.1.1.1.10
Full-Scale Error Drift
11.1.1.1.11
Offset Error Drift
11.1.1.1.12
Zero-Code Error Drift
11.1.1.1.13
Gain Temperature Coefficient
11.1.1.1.14
Power-Supply Rejection Ratio (PSRR)
11.1.1.1.15
Monotonicity
11.1.1.2
Dynamic Performance
11.1.1.2.1
Slew Rate
11.1.1.2.2
Output Voltage Settling Time
11.1.1.2.3
Code Change/Digital-to-Analog Glitch Energy
11.1.1.2.4
Digital Feedthrough
11.1.1.2.5
Channel-to-Channel DC Crosstalk
11.1.1.2.6
Channel-to-Channel AC Crosstalk
11.1.1.2.7
Signal-to-Noise Ratio (SNR)
11.1.1.2.8
Total Harmonic Distortion (THD)
11.1.1.2.9
Spurious-Free Dynamic Range (SFDR)
11.1.1.2.10
Signal-to-Noise plus Distortion (SINAD)
11.1.1.2.11
DAC Output Noise Density
11.1.1.2.12
DAC Output Noise
11.1.1.2.13
Full-Scale Range (FSR)
11.2
Related Links
11.3
Receiving Notification of Documentation Updates
11.4
Community Resources
11.5
Trademarks
11.6
Electrostatic Discharge Caution
11.7
Glossary
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
PW|16
MPDS361A
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbas430f_oa
sbas430f_pm
11
Device and Documentation Support