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
Digital Input Code
INL Error (LSB)
0 512 1024 1536 2048 2560 3072 3584 4096
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
-0.8
-0.4
0.4
0.8
All Eight Channels Shown
External Reference = 2.5V
CH A
CH B
CH C
CH D
CH E
CH F
CH G
CH H
Digital Input Code
DNL Error (LSB)
0 512 1024 1536 2048 2560 3072 3584 4096
-0.25
-0.20
-0.15
-0.10
-0.05
0.00
0.05
0.10
0.15
0.20
0.25
All Eight Channels Shown
External Reference = 2.5V
CH A
CH B
CH C
CH D
CH E
CH F
CH G
CH H
Digital Input Code
INL Error (LSB)
0 512 1024 1536 2048 2560 3072 3584 4096
-1.0
-0.8
-0.6
-0.4
-0.2
0.2
0.4
0.6
0.8
1.0
-0.8
-0.4
0.0
0.4
0.8
CH A
CH B
CH C
CH D
CH E
CH F
CH G
CH H
Digital Input Code
DNL Error (LSB)
0 512 1024 1536 2048 2560 3072 3584 4096
-0.25
-0.20
-0.15
-0.10
-0.05
0.00
0.05
0.15
0.25
0.10
0.20
CH A
CH B
CH C
CH D
CH E
CH F
CH G
CH H
Digital Input Code
INL Error (LSB)
0 512 1024 1536 2048 2560 3072 3584 4096
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
-0.8
-0.4
0.4
0.8
All Eight Channels Shown
External Reference = 2.5V
CH A
CH B
CH C
CH D
CH E
CH F
CH G
CH H
Digital Input Code
DNL Error (LSB)
0 512 1024 1536 2048 2560 3072 3584 4096
-0.25
-0.20
-0.15
-0.10
-0.05
0.00
0.05
0.10
0.15
0.20
0.25
All Eight Channels Shown
External Reference = 2.5V
CH A
CH B
CH C
CH D
CH E
CH F
CH G
CH H
DAC5578
DAC6578
DAC7578
SBAS496A –MARCH 2010–REVISED AUGUST 2010
www.ti.com
TYPICAL CHARACTERISTICS: DAC AT AV
DD
= 2.7 V
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).
LINEARITY ERROR DIFFERENTIAL LINEARITY ERROR
vs DIGITAL INPUT CODE (DAC7578, 12-Bit, –40°C) vs DIGITAL INPUT CODE (DAC7578, 12-Bit, –40°C)
Figure 60. Figure 61.
LINEARITY ERROR DIFFERENTIAL LINEARITY ERROR
vs DIGITAL INPUT CODE (DAC7578, 12-Bit, +25°C) vs DIGITAL INPUT CODE (DAC7578, 12-Bit, +25°C)
Figure 62. Figure 63.
LINEARITY ERROR DIFFERENTIAL LINEARITY ERROR
vs DIGITAL INPUT CODE (DAC7578, 12-Bit, +125°C) vs DIGITAL INPUT CODE (DAC7578, 12-Bit, +125°C)
Figure 64. Figure 65.
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