Datasheet

Data Sheet AD5381
Rev. D | Page 7 of 40
Parameter AD5381-3
1
Unit Test Conditions/Comments
LOGIC OUTPUTS (
BUSY
, SDO)
3
V
OL
, Output Low Voltage 0.4 V max Sinking 200 µA
V
OH
, Output High Voltage DVDD – 0.5 V min Sourcing 200 µA
High Impedance Leakage Current ±1 µA max SDO only
High Impedance Output Capacitance 5 pF typ SDO only
LOGIC OUTPUT (SDA)
3
V
OL
, Output Low Voltage 0.4 V max I
SINK
= 3 mA
0.6 V max I
SINK
= 6 mA
Three-State Leakage Current
±1
µA max
Three-State Output Capacitance
8
pF typ
POWER REQUIREMENTS
AVDD 2.7/3.6 V min/max
DVDD 2.7/5.5 V min/max
Power Supply Sensitivity
3
∆Midscale/∆ΑV
DD
–85 dB typ
AI
DD
0.375 mA/channel max Outputs unloaded, boost off; 0.25 mA/channel typ
0.475
mA/channel max
Outputs unloaded, boost on; 0.325 mA/channel typ
DI
DD
1 mA max V
IH
= DVDD, V
IL
= DGND
AI
DD
(Power-Down)
20
µA max
Typically 100 nA
DI
DD
(Power-Down) 20 µA max Typically 1 µA
Power Dissipation 48 mW max Outputs unloaded, boost off, AVDD = DVDD = 3 V
1
AD5381-3 is calibrated using an external 1.25 V reference. Temperature range is –40°C to +85°C.
2
Accuracy guaranteed from VOUT = 10 mV to AVDD – 50 mV.
3
Guaranteed by characterization, not production tested.
4
Default on the AD5381-3 is 1.25 V. Programmable to 2.5 V via CR10 in the AD5381 control register; operating the AD5381-3 with a 2.5 V reference will lead to degraded
accuracy specifications and limited input code range.
AC CHARACTERISTICS
1
AVDD = 4.5 V to 5.5 V or 2.7 V to 3.6 V; DVDD = 2.7 V to 5.5 V; AGND = DGND = 0 V.
Table 4.
Parameter All Unit Test Conditions/Comments
DYNAMIC PERFORMANCE
Output Voltage Settling Time
1/4 scale to 3/4 scale change settling to ±1 LSB
3 µs typ
8 µs max
Slew Rate
2
1.5 V/µs typ Boost mode off, CR9 = 0
2.5 V/µs typ Boost mode on, CR9 = 1
Digital-to-Analog Glitch Energy 12 nV-s typ
Glitch Impulse Peak Amplitude
15
mV typ
DAC-to-DAC Crosstalk 1 nV-s typ See Terminology section
Digital Crosstalk 0.8 nV-s typ
Digital Feedthrough 0.1 nV-s typ Effect of input bus activity on DAC output under test
Output Noise 0.1 Hz to 10 Hz 15 µV p-p typ External reference, midscale loaded to DAC
40 µV p-p typ Internal reference, midscale loaded to DAC
Output Noise Spectral Density
@ 1 kHz
150
nV/√Hz typ
@ 10 kHz 100 nV/√Hz typ
1
Guaranteed by design and characterization, not production tested.
2
Slew rate can be programmed via the current boost control bit in the AD5381 control register.