Datasheet

AD5380 Data Sheet
Rev. C | Page 6 of 40
AD5380-3 SPECIFICATIONS
AVDD = 2.7 V to 3.6 V; DVDD = 2.7 V to 5.5 V, AGND = DGND = 0 V; external REFIN = 1.25 V; all specifications T
MIN
to T
MAX
,
unless otherwise noted.
Table 3.
Parameter AD5380-3
1
Unit Test Conditions/Comments
ACCURACY
Resolution 14 Bits
Relative Accuracy
2
(INL) ±4 LSB max
Differential Nonlinearity (DNL) –1/+2 LSB max Guaranteed monotonic over temperature
Zero-Scale Error 4 mV max
Offset Error ±4 mV max Measured at Code 64 in the linear region
Offset Error TC ±5 µV/°C typ
Gain Error
±0.05
% FSR max
At 25°C
±0.1 % FSR max T
MIN
to T
MAX
Gain Temperature Coefficient
3
2 ppm FSR/°C typ
DC Crosstalk
3
1 LSB max
REFERENCE INPUT/OUTPUT
Reference Input
3
Reference Input Voltage 1.25 V ±1% for specified performance
DC Input Impedance 1 MΩ min Typically 100 MΩ
Input Current ±1 µA max Typically ±30 nA
Reference Range
1 to AVDD/2
V min/max
Reference Output
4
Enabled via CR10 in the AD5380 control register.
CR12 selects the reference voltage.
Output Voltage 1.245/1.255 V min/max At ambient; CR12 = 0; Optimized for 1.25 V operation
2.47/2.53 V min/max CR12 = 1.
Reference TC
3
±10 ppm/°C max Temperature range: +25°C to +85°C
±15 ppm/°C max Temperature range: −40°C to +85°C
Output Impedance 800 Ω typ
OUTPUT CHARACTERISTICS
3
Output Voltage Range
2
0/AVDD V min/max
Short-Circuit Current 40 mA max
Load Current ±1 mA max
Capacitive Load Stability
R
L
= ∞
200
pF max
R
L
= 5 kΩ 1000 pF max
DC Output Impedance 0.6 Ω max
MONITOR PIN
Output Impedance
1
kΩ typ
Three-State Leakage Current 100 nA typ
LOGIC INPUTS (EXCEPT SDA/SCL)
3
DVDD = 2.7 V to 3.6 V
V
IH
, Input High Voltage 2 V min
V
IL,
Input Low Voltage
DVDD > 3.6 V 0.8 V max
DVDD ≤ 3.6 V 0.6 V max
Input Current ±10 µA max Total for all pins; T
A
= T
MIN
to T
MAX
Pin Capacitance 10 pF max
LOGIC INPUTS (SDA, SCL ONLY)
3
V
IH
, Input High Voltage 0.7 × DVDD V min SMBus-compatible at DVDD < 3.6 V
V
IL
, Input Low Voltage 0.3 × DVDD V max SMBus-compatible at DVDD < 3.6 V
I
IN
, Input Leakage Current ±1 µA max
V
HYST
, Input Hysteresis 0.05 × DVDD V min
C
IN
, Input Capacitance 8 pF typ
Glitch Rejection 50 ns max Input filtering suppresses noise spikes of less than 50 ns