ADA4571WHRZ-R7 datasheet(6/21 Pages) AD

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ADA4571

Data Sheet

Rev. 0 | Page 6 of 21

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Parameter

Symbol

Test Conditions/Comments

Min

Typ

Max

Unit

DIGITAL INPUTS

Input Bias Current (GC)

IB_GC

For GC mode control pin, GC = GND

µA

For GC mode control pin, GC = VDD

µA

Input Bias Current (PD)

IB_PD

For PD pin, PD = GND

µA

For PD pin, PD = VDD

µA

Input Voltage (GC and PD)

High

VIH

1.4

Low

VIL

0.35

TEMPERATURE SENSOR

Error Over Temperature

TERR

°C

Temperature Voltage Range

TRANGE

TA = −40°C to +125°C

% VDD

Temperature Coefficient

TCO

3.173

mV/V/°C

VTEMP Output Voltage

TA = 25°C

% VDD

VTEMP Output Impedance

Buffered output

VTEMP Load Capacitance

Optional load capacitance

VTEMP Short-Circuit Current

ISC_VTEMP

Short-circuit to VDD or GND

LOAD CAPACITOR

External Load Capacitance

Between VSIN to GND and VCOS to GND;

solder close to package

αUNCORR is the total mechanical angular error after arctan computation. This parameter is 100% production tested at 25°C and 150°C. This error includes all sources of

error over temperature before calibration. Error components such as offset, amplitude synchronism, amplitude synchronism drift, thermal offset drift, phase error,

hysteresis, orthogonality error, and noise are included.

αCAL is the total mechanical angular error after arctan computation. This error includes all sources of error over temperature after an initial offset (nulling) is performed

at TA = 25°C. Error components such as amplitude synchronism drift, amplifier gain matching, thermal offset drift, phase error, hysteresis, orthogonality error, and

noise are included.

Guaranteed through characterization.

αDYNAMIC is the total mechanical angular error after arctan computation. This parameter is 100% production tested. This error includes all sources of error over

temperature after a continuous background calibration is performed to correct offset and amplitude synchronism errors. Error components such as phase error,

hysteresis, orthogonality error, noise, and lifetime drift are included.

Angular speed <300 rpm. Limited to 180° rotation. The value is calculated only with the third and fifth harmonics of the spectrum of output signal amplitude by the

ideal homogeneous field.

Peak-to-peak amplitude mismatch. k = 100 × VSIN/VCOS.

Rotation frequency dependent phase error, after offset correction, amplitude calibration, and arctan calculation.

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