www.austriamicrosystems.com/AS5130

Revision 1.12

8 - 41

AS5130

Datasheet - Electrical Character i s t ics

6.1 Timing Characteristics

6.2 Magnetic Input Range

The magnetic input range is defined by the AGC loop. This regulating loop keeps the Hall sensor output in the optimum range for low SNR by

adjusting the Hall bias current. This loop can adjust to a magnetic field strength variation of ±38%. The AGC output voltage is an indicator for the

magnetic field.

The nominal magnetic field for a balanced AGC is defined by the Hall bias and the Hall sensitivity and can be set by a variable gain in the signal

inside of a range of 32mT …75mT, if the trimming is performed by the customer.

Table 4. Timing Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Units

t0

Rising CLK to CS

15

--

ns

t1

Chip select to positive edge of CLK

15

--

ns

t2

Chip select to drive bus externally

--

--

ns

t3

Setup time command bit,

Data valid to positive edge of CLK

30

ns

t4

Hold time command bit,

Data valid after positive edge of CLK

30

ns

t5

Float time,

Positive edge of CLK for last command bit to

bus float

30

CLK/2

ns

t6

Bus driving time,

Positive edge of CLK for last command bit to

bus drive

CLK/2

+0

CLK/2

+30

ns

t7

Setup time data bit,

Data valid to positive edge of CLK

CLK/2

+0

CLK/2

+30

ns

t8

Hold time data bit,

Data valid after positive edge of CLK

CLK/2

+0

CLK/2

+30

ns

t9

Hold time chip select,

Positive edge CLK to negative edge of chip

select

30

ns

t10

Bus floating time,

Negative edge of chip select to float bus

030

ns

Timeout period in 2-wire mode (from rising

edge of CLK)

20

24

µs

Table 5. Magnetic Input Range

Setting

01

2

3

45

6

7

Binary

000

001

010

011

100

101

110

111

Gain A

0.9

1.05

1.2

1.4

1.65

1.9

2.2

2.55

Max. 75mT

Min. 32mT