ADA4571BRZ-R7 datasheet(5/21 Pages) AD

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Data Sheet

ADA4571

Rev. 0 | Page 5 of 21

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ADA4571B

−40°C ≤ TA ≤ +125°C, VDD = 2.7 V to 5.5 V, CL = 10 nF to GND, RL = 200 kΩ to GND; angle inaccuracies referred to homogenous

magnetic field of 25 kA/m; output signals and offset voltages are related to the common-mode level of VDD/2, unless otherwise stated.

Table 3.

Parameter

Symbol

Test Conditions/Comments

Min

Typ

Max

Unit

ANGULAR PERFORMANCE

Angle Measurement Range

180

Degrees

Uncorrected Angular Error1

αUNCORR

TA = −40°C

±3

Degrees

TA = 25°C

±3

Degrees

TA = 125°C

±4

Degrees

Single Point Calibration Angular

Error2, 3

αCAL

TA = −40°C to +125°C, GC = GND

±0.5

Degrees

TA = −40°C to +125°C, GC = VDD

±0.5

Degrees

Dynamic Angular Error4

αDYNAMIC

TA = −40°C to +125°C, rotation frequency =

2000 rpm

0.1

±0.4

Degrees

Angular Inaccuracy3, 5

∆α

After end of line (EOL) calibration for offset

voltage error and amplitude synchronism at

TA = −40°C to +125°C (only 180° range)

0.05

Degrees

OUTPUT PARAMETERS

Amplitude

VAMP

GC = GND

TA = −40°C

% VDD

TA = 25°C

% VDD

TA = 125°C

% VDD

GC = VDD

TA = −40°C

% VDD

TA = 25°C

% VDD

TA = 125°C

% VDD

Output Voltage Range

VO_SWING

VSIN and VCOS, normal operation

% VDD

Output Voltage Low

VOL

VSIN or VCOS, broken bond wire detected

3.75

% VDD

Output Referred Offset Voltage

VOFFSET

GC = VDD

3.75

% VDD

GC = GND

3.75

% VDD

Amplitude Synchronism Error6

−0.75

+0.75

% peak

Delay Time

tDEL

Rotation frequency = 30,000 rpm

µs

Phase Error7

ΦERR

Rotation frequency = 30,000 rpm

0.8

Degrees

Orthogonality Error3

0.05

Degrees

Output Noise

VNOISE

BW = 80 kHz, RTO

500

µV rms

Output Series Resistance

Normal operation, PD = GND

PD = VDD

kΩ

Output −3 dB Cutoff Frequency3

f−3dB

Amplifier BW, CL = 10 pF

100

kHz

Power Supply Rejection3

PSRR

Measured as output variation from VDD/2,

VDD = 2.7 V to 5.5 V, RL = 200 kΩ to GND,

GC = GND or VDD

Output Short-Circuit Current

ISC

Short to GND per pin (VSIN, VCOS)

Short to VDD per pin (VSIN, VCOS)

−15

−18

Sensitivity

SEN

α = 0° and 135°, TA = 25°C

mV/°

POWER SUPPLY

Supply Voltage

VDD

2.7

5.5

Quiescent Supply Current

ISY

PD = GND, GC = GND, no load

3.5

4.5

PD = GND, GC = VDD

6.5

PD = VDD, no load

12.5

µA

Power-Up Time

tPWRUP

To 98% of desired output level after VDD was

reached

150

µs

To 98% of desired output level after PD cycling

100

µs

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