ADA4571-2 datasheet(4/13 Pages) AD

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ADA4571-2

Data Sheet

Rev. 0 | Page 4 of 13

Parameter

Symbol

Test Conditions/Comments

Min

Typ

Max

Unit

Power Supply Rejection Ratio3

PSRR

Measured as a dc output variation from

VDD/2, VDD = 3 V to 5.5 V, RL = 200 kΩ to

GNDx, GCx = GNDx or VDD

Output Short-Circuit Current

Per Channel

ISC

Short to GNDx per pin (VSINx, VCOSx) per

channel

Short to VDDx per pin (VSINx, VCOSx) per

channel

−15

−18

POWER SUPPLY

Supply Voltage

VDD

5.5

Quiescent Supply Current Per

Channel

ISY

PDx = GNDx, GCx = GNDx, no load, VDD1

and VDD2

3.5

4.5

6.5

PDx = GNDx, GCx = VDD, no load, VDD1 and

VDD2

PDx = VDD, no load, VDD1 and VDD2

μA

Power-Up Time

tPWRUP

To 98% of desired output level after VDD is

reached

150

μs

To 98% of desired output level after PDx

cycling

100

μs

DIGITAL INPUTS

Input Bias Current

GC1, GC2

IB_GC

For GCx mode control pin, GCx = GNDx

μA

For GCx mode control pin, GCx = VDD

μA

PD1, PD2

IB_PD

For PDx pin, PDx = GNDx

μA

For PDx pin, PDx = VDD

μA

Input Voltage (GC1, GC2, PD1

and PD2)

High

VIH

1.4

Low

VIL

0.35

TEMPERATURE SENSOR (VTEMP1,

VTEMP2)

Error Over Temperature

TERR

°C

Temperature Voltage Range

TRANGE

TA = −40°C to +150°C

% VDD

Temperature Coefficient

Tempco

3.173

mV/V/°C

VTEMPx

Output Voltage

TA = 25°C

% VDD

Output Impedance

Buffered output

Load Capacitance

Optional load capacitance

Short-Circuit Current

ISC_VTEMP

Short-circuit to VDDx or GNDx

LOAD CAPACITOR

External Load Capacitance

Between VSINx to GNDx and VCOSx to

GNDx; solder close to package

1 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.

2 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.

3 Guaranteed through characterization.

4 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.

5 Peak-to-peak amplitude mismatch. k = 100 × VSINx/VCOSx.

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

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