A31316 datasheet(10/61 Pages) ALLEGRO

10 / 61 page

3D Magnetic Position Sensor IC

A31316

Allegro MicroSystems

955 Perimeter Road

Manchester, NH 03103-3353 U.S.A.

www.allegromicro.com

INTERFACE CHARACTERISTICS: Valid for all electrical and device requirements ranges and |BIN| ≥ 300 G,

unless otherwise noted

Characteristics

Symbol

Test Conditions

Min.

Typ.

Max.

Unit

Broken Wire Response Time

tBW

Time after VCC – GND = 0.2 V, either VCC or GND

wire broken

–

500

µs

Diagnostic Voltage Ranges

VSATDIAG(HIGH) VCC = 5 V

RL = 3.3 kΩ

100

%VCC

RL = 5 kΩ

100

%VCC

RL = 10 kΩ

100

%VCC

VSATDIAG(LOW) VCC = 5 V

RL = 3.3 kΩ

%VCC

RL = 5 kΩ

%VCC

RL = 10 kΩ

%VCC

High-Z Leakage

Ileak(Hi-Z)

Device in High-Z mode, output shorted to GND or

VCC

–10

–

µA

Filter Step Response Time

tRESP

bw_sel = 5, time to 90% response to step

–

396

450

µs

Angle Update Rate

tUPDATE

Valid for all bandwidth settings

14.72

17.28

µs

MANCHESTER INTERFACE SPECIFICATIONS

Manchester Input Thresholds [3]

Vtrig(H)

VOUT rising, dig_comm_input_high = '0'

1.800 1.980

2.160

VOUT rising, dig_comm_input_high = '1'

2.185 2.365

2.540

Vtrig(L)

VOUT falling, dig_comm_input_low = '0'

0.830 0.990

1.155

VOUT falling, dig_comm_input_low = '1'

1.385 1.640

1.905

Vtrig(hys)

dig_comm_input_high = '0', dig_comm_input_low

= '0'

0.815 0.985

1.150

dig_comm_input_high = '0', dig_comm_input_low

= '1'

0.160 0.335

0.525

dig_comm_input_high = '1', dig_comm_input_low

= '0'

1.155 1.380

1.605

dig_comm_input_high = '1', dig_comm_input_low

= '1'

0.495 0.725

0.995

Manchester Communication

Speed [3]

fMAN

Manchester input bit rate (from host to sensor)

4.0

–

100

kbps

Manchester output bit rate with 100 nF load

(device responds at the input bit rate)

4.0

–

8 [1]

kbps

SENT INTERFACE SPECIFICATIONS

SENT Tick Time

tTICK

Valid for all SENT Modes, dig_out_data_rate = '0'

2.76

3.24

µs

Valid for all SENT Modes, range of selectable tick

times [2]

0.25

–

µs

SENT Tick Time Tolerance

TOLTICK

Valid for all selectable tick times

–8

–

SENT Output Resolution

Based on sent_data_sel

–

bits

SENT Output Saturation Voltage

VSAT(LOW)

Output current = –4.7 mA, VCC = 5 V, output FET

–

0.55

SENT Output Load Capacitance

–

SENT Output Load Resistance

RL(PULLUP)

Output Current ≥ –10 mA

3.3

–

kΩ

SENT Output Low Voltage [3]

VOL

Low state voltage with 0.52 mA DC load current

–

0.5

SENT Output High Voltage [3]

VOH

High state voltage with 0.1 mA DC load current

4.1

–

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