Datasheet

AD7294 Data Sheet
Rev. H | Page 8 of 48
GENERAL SPECIFICATIONS
AV
DD
= DV
DD
= 4.5 V to 5.5 V, AGND = DGND = 0 V, V
REF
= 2.5 V internal or external; V
DRIVE
= 2.7 V to 5.5 V; V
PP
= AV
DD
to 59.4 V;
DAC OUTV+ AB and DAC OUTV+ CD = 4.5 V to 16.5 V; OFFSET IN x is floating, therefore, DAC output span = 0 V to 5 V;
T
A
= −40°C to +105°C, unless otherwise noted.
Table 3.
Parameter Min Typ Max Unit Test Conditions/Comments
LOGIC INPUTS
Input High Voltage, V
IH
0.7 V
DRIVE
V SDA, SCL only
Input Low Voltage, V
IL
0.3 V
DRIVE
V SDA, SCL only
Input Leakage Current, I
IN
±1 µA
Input Hysteresis, V
HYST
0.05 V
DRIVE
V
Input Capacitance, C
IN
8 pF
Glitch Rejection 50 ns Input filtering suppresses noise spikes of less
than 50 ns
I
2
C® Address Pins Maximum External
Capacitance if Floating
30 pF Tristate input
LOGIC OUTPUTS
SDA, ALERT SDA and ALERT/BUSY are open-drain outputs
Output Low Voltage, V
OL
0.4 V I
SINK
= 3 mA
0.6 V I
SINK
= 6 mA
Floating-State Leakage Current ±1 µA
Floating-State Output Capacitance 8 pF
I
SENSE
OVERRANGE I
SENSE
OVERRANGE is a push-pull output
Output High Voltage, V
OH
V
DRIVE
− 0.2 V I
SOURCE
= 200 µA for push-pull outputs
Output Low Voltage, V
OL
0.2 V I
SINK
= 200 µA for push-pull outputs
Overrange Setpoint V
FS
V
FS
× 1.2 mV V
FS
= ±V
REF
ADC/12.5
POWER REQUIREMENTS
V
PP
AV
DD
59.4 V
AV
DD
4.5 5.5 V
V(+) 4.5 16.5 V
DV
DD
4.5 5.5 V Tie DV
DD
to AV
DD
V
DRIVE
2.7 5.5 V
I
DD
Dynamic 5.3 6.5 mA AV
DD
+ DV
DD
+ V
DRIVE
, DAC outputs unloaded
DAC OUTV+ x, I
DD
0.6 1.2 mA @ midscale output voltage, DAC outputs
unloaded
Power Dissipation 70 105 mW
Power-Down
I
DD
0.5 1 µA For each AV
DD
and V
DRIVE
DI
DD
1 16.5 µA
DAC OUTV+ x, I
DD
35 60 µA
Power Dissipation 2.5 mW