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

DAC5578
DAC6578
DAC7578
SBAS496A –MARCH 2010–REVISED AUGUST 2010
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
At AV
DD
= 2.7V to 5.5V and over –40°C to +125°C, unless otherwise noted.
DAC5578, DAC6578, DAC7578
PARAMETER TEST CONDITIONS UNIT
MIN TYP MAX
AC PERFORMANCE
(4)
DAC output noise density T
A
= +25°C, at zero-code input, f
OUT
= 1kHz 20 nV/√Hz
DAC output noise T
A
= +25°C, at midscale input, f = 0.1Hz to 10Hz 3 mV
PP
EXTERNAL REFERENCE
External reference current AV
DD
= 2.7V to 5.5V 60 µA
LOGIC INPUTS
(4)
Input current ±1 mA
V
IN
L Logic input LOW voltage 2.7V ≤ AV
DD
≤ 5.5V GND-0.3 0.3xAV
DD
V
V
IN
H Logic input HIGH voltage 2.7V ≤ AV
DD
≤ 5.5V 0.7xAV
DD
AV
DD
+0.3 V
Pin capacitance 1.5 3 pF
POWER REQUIREMENTS
AV
DD
Analog power supply 2.7 5.5 V
AV
DD
= 3.6V to 5.5V
1.02 1.4 mA
V
IN
H = AV
DD
and V
IN
L = GND
Normal mode
AV
DD
= 2.7V to 3.6V
0.86 1.3 mA
V
IN
H = AV
DD
and V
IN
L = GND
I
DD
(5)
AV
DD
= 3.6V to 5.5V
0.42 6 mA
V
IN
H = AV
DD
and V
IN
L = GND
All power-down modes
AV
DD
= 2.7V to 3.6V
0.25 4.7 mA
V
IN
H = AV
DD
and V
IN
L = GND
AV
DD
= 3.6V to 5.5V
3.67 7.7 mW
V
IN
H = AV
DD
and V
IN
L = GND
Normal mode
AV
DD
= 2.7V to 3.6V
2.32 4.68 mW
V
IN
H = AV
DD
and V
IN
L = GND
Power
dissipation
(5)
AV
DD
= 3.6V to 5.5V
1.51 33 mW
V
IN
H = AV
DD
and V
IN
L = GND
All power-down modes
AV
DD
= 2.7V to 3.6V
0.68 16.92 mW
V
IN
H = AV
DD
and V
IN
L = GND
TEMPERATURE RANGE
Specified performance –40 +125 °C
(4) Specified by design or characterization; not production tested.
(5) Input code = mid scale, no load.
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