ADA4571-2 datasheet(3/13 Pages) AD

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Data Sheet

ADA4571-2

Rev. 0 | Page 3 of 13

SPECIFICATIONS

MAGNETIC CHARACTERISTICS

Table 1.

Parameter

Symbol

Min

Typ

Max

Unit

Test Conditions/Comments

MINIMUM MAGNETIC

FIELD STRENGTH

HEXT

kA/m

The stimulating magnetic field in the x-y sensor plane necessary to

ensure the minimum error, as specified in this table and in Table 2

MAXIMUM ROTATIONAL

FREQUENCY

30,000

rpm

ELECTRICAL CHARACTERISTICS

−40°C ≤ TA ≤ +150°C, VDD = 3 V to 5.5 V, CL = 10 nF to GNDx, RL = 5 kΩ to GNDx; 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 noted.

Table 2.

Parameter

Symbol

Test Conditions/Comments

Min

Typ

Max

Unit

ANGULAR PERFORMANCE

Angle Measurement Range

180

Degrees

Uncorrected Angular Error1

αUNCORR

TA = −40°C

±2

±7

Degrees

TA = 25°C

±2

±7

Degrees

TA = 150°C

±2

±7

Degrees

Single-Point Calibration Angular

Error2, 3

αCAL

TA = −40°C to +150°C, GCx = GNDx

±0.5

Degrees

TA = −40°C to +150°C, GCx = VDD

±0.4

Degrees

Dynamic Angular Error4

αDYNAMIC

VDD = 3 V, TA = −40°C to +150°C, rotation

frequency = 2000 rpm

±0.1

±0.5

Degrees

VDD = 5 V, TA = −40°C to +150°C, rotation

frequency = 2000 rpm

±0.1

±0.4

Degrees

OUTPUT PARAMETERS

Peak-to-Peak Voltage

VPP

GCx = GNDx

TA = −40°C

% VDD

TA = 25°C

% VDD

TA = 125°C

% VDD

TA = 150°C

% VDD

GCx = VDDx

TA = −40°C

% VDD

TA = 25°C

% VDD

TA = 125°C

% VDD

TA = 150°C

% VDD

Output Voltage Range

VO_SWING

VSIN1, VSIN2, VCOS1, and VCOS2; normal

operation

% VDD

Output Voltage Low

VOL

VSIN1, VSIN2, VCOS1, or VCOS2; broken

bond wire detected

% VDD

Output Referred Offset Voltage

VOFFSET

GCx = VDDx

3.75

% VDD

GCx = GNDx

3.75

% VDD

Amplitude Synchronism Error5

−1

±0.1

% peak

Delay Time

tDEL

Rotation frequency = 30,000 rpm

μs

Phase Error6

ΦERR

Rotation frequency = 30,000 rpm

0.8

Degrees

Orthogonality Error3

0.025

Degrees

Output Noise

VNOISE

Bandwidth (BW) = 80 kHz, referred to

output (RTO)

500

μV rms

Output Series Resistance

Normal operation, PDx = GNDx

PDx = VDD

kΩ

Output −3 dB Cutoﬀ Frequency3

f−3 dB

Amplifier BW, CL = 10 pF

100

kHz

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