Datasheet
Table Of Contents
- FEATURES
- APPLICATIONS
- DESCRIPTION
- ABSOLUTE MAXIMUM RATINGS
- THERMAL INFORMATION
- ELECTRICAL CHARACTERISTICS
- PIN CONFIGURATIONS
- TIMING DIAGRAM
- TIMING REQUIREMENTS
- TYPICAL CHARACTERISTICS: DAC at AVDD = 5.5 V
- TYPICAL CHARACTERISTICS: DAC AT AVDD = 3.6 V
- TYPICAL CHARACTERISTICS: DAC AT AVDD = 2.7 V
- THEORY OF OPERATION
- DIGITAL-TO-ANALOG CONVERTER (DAC)
- RESISTOR STRING
- OUTPUT AMPLIFIER
- TWO-WIRE, I2C-COMPATIBLE INTERFACE
- DACx578 I2C UPDATE SEQUENCE
- POWER-ON RESET TO ZERO-SCALE OR MIDSCALE
- LDAC FUNCTIONALITY
- POWER-DOWN COMMANDS
- CLEAR CODE REGISTER AND CLR PIN
- SOFTWARE RESET FUNCTION
- OPERATING EXAMPLES: DAC7578
- Example 1: Write Mid Scale to Data Buffer A and Update Channel A Output
- Example 2: Power-Down Channel B, C, and H with Hi-Z Output
- Example 3: Read-back the value of the input register of DAC Channel G
- Example 4: Write multiple bytes of data to Channel F. Write Full Scale and then Quarter Scale to Channel F
- Example 5: Write Mid Scale and then Full Scale to all DAC channels.
- APPLICATION INFORMATION
- PARAMETER DEFINITIONS
- Revision History
Time (2 s/div)m
V - 1 mV/div
OUT
LDAC Clock
Feed-Through
External Reference = 2.5 V
From Code 200h to 201h
LDAC - Trigger Pulse
5 V/div
Time (2 s/div)m
V - 1 mV/div
OUT
LDAC Clock
Feed-Through
External Reference = 2.5 V
From Code 201h to 200h
LDAC - Trigger Pulse
5 V/div
Time (2 s/div)m
V - 5 mV/div
OUT
LDAC Clock
Feed-Through
External Reference = 2.5 V
From Code 80h to 81h
LDAC - Trigger Pulse
5 V/div
LDAC Clock
Feed-Through
V - 5 mV/div
OUT
LDAC - Trigger Pulse
5 V/div
External Reference = 2.5 V
From Code 81h to 80h
Time (2 s/div)m
DAC5578
DAC6578
DAC7578
SBAS496A –MARCH 2010–REVISED AUGUST 2010
www.ti.com
TYPICAL CHARACTERISTICS: DAC AT AV
DD
= 2.7 V (continued)
At T
A
= 25°C, external reference used, DAC output not loaded, and all DAC codes in straight binary data format, DAC7578
graphs shown (unless otherwise noted).
GLITCH ENERGY: GLITCH ENERGY:
2.7V, 10-BIT, 1LSB STEP, FALLING EDGE 2.7V, 10-BIT, 1LSB STEP, FALLING EDGE
Figure 107. Figure 108.
GLITCH ENERGY: GLITCH ENERGY:
2.7V, 8-BIT, 1LSB STEP, RISING EDGE 2.7V, 8-BIT, 1LSB STEP, FALLING EDGE
Figure 109. Figure 110.
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