AD5422 datasheet(4/29 Pages) AD

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AD5420

Preliminary Technical Data

Rev. PrD | Page 4 of 29

SPECIFICATIONS

AVDD = 10.8V to 40V/60V1, AGND = DGND = 0 V, REFIN= +5 V external; DVCC = 2.7 V to 5.5 V, RL = 300Ω, HL = 50mH;

all specifications TMIN to TMAX, 0 to 24 mA range unless otherwise noted.

Table 2.

Parameter

Value2

Unit

Test Conditions/Comments

Output Current Ranges

0 to 24

0 to 20

4 to 20

ACCURACY

Resolution

Bits

Total Unadjusted Error (TUE)

±0.3

% FSR max

Over temperature, supplies, and time, typically 0.1% FSR

TUE TC3

±5

ppm/°C typ

Relative Accuracy (INL)

±0.012

% FSR max

Differential Nonlinearity (DNL)

±1

LSB max

Guaranteed monotonic

Offset Error

±0.05

% FSR max

Offset Error Drift

±5

µv/°C typ

Gain Error

±0.02

% FSR max

@ 25°C, error at other temperatures obtained using gain

Gain TC3

±8

ppm FSR/°C max

Full-Scale Error

0.05

% FSR max

@ 25°C, error at other temperatures obtained using gain

Full-Scale TC3

±8

ppm FSR/°C

OUTPUT CHARACTERISTICS3

Current Loop Compliance Voltage

AVDD - 2.5

V max

Output Current Drift vs. Time

TBD

ppm FSR/500 hr typ

TBD

ppm FSR/1000 hr typ

Resistive Load

TBD

Ω max

Inductive Load

H max

DC PSRR

µA/V max

Output Impedance

MΩ typ

REFERENCE INPUT/OUTPUT

Reference Input3

Reference Input Voltage

V nom

±1% for specified performance

DC Input Impedance

kΩ min

Typically 40 kΩ

Reference Range

4 to 5

V min to V max

Reference Output

Output Voltage

4.998 to 5.002

V min to V max

@ 25°C

Reference TC

±10

ppm/°C max

Output Noise (0.1 Hz to 10 Hz)3

µV p-p typ

Noise Spectral Density3

120

nV/√Hz typ

@ 10 kHz

Output Voltage Drift vs. Time3

±40

ppm/500 hr typ

±50

ppm/1000 hr typ

Capacitive Load

TBD

nF max

Load Current

mA typ

Short Circuit Current

mA typ

Line Regulation3

ppm/V typ

Load Regulation3

TBD

ppm/mA

Thermal Hysteresis3

TBD

ppm

DIGITAL INPUTS3

DVCC = 2.7 V to 5.5 V, JEDEC compliant

VIH, Input High Voltage

V min

VIL, Input Low Voltage

0.8

V max

Input Current

±1

µA max

Per pin

Pin Capacitance

pF typ

Per pin

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