AS5132-HSST-500【PDF 16/27 页】IC ENCODER ROTARY 20-SSOP

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www.ams.com

Revision 1.4

16 - 27

AS5132

Datasheet - Detailed Description

7.3 Incremental Outputs

Two different incremental output modes are possible. Quadrature A/B mode and selectable Step Mode can be selected by the pins TEST0,

TEST1, TEST2, TEST3 and COM / INC.

Note: The pin setting COM / INC has priority. In case of a low state the device is exclusively in the commutation mode. Not specified states of

TEST3, TEST2, TEST1 and TEST0 in incremental mode will enable the quadrature A/B/I mode. This configuration is only read once at

startup. It is not recommended to change the state during operation.

7.3.1 Quadrature A/B Output

Figure 16. Incremental Output of the AS5132

Figure 16 shows the two-channel quadrature output. The index position is mapped to the absolute mechanical zero position. The phase shift

between channel A and B indicates the direction of the magnet movement. Channel A leads channel B at a clockwise rotation of the magnet (top

view) by 90 electrical degrees. Channel B leads channel A at a counter-clockwise rotation.

Table 6. Configuration of the Incremental Output Modes

COM / INC

TEST3

TEST2

TEST1

TEST0

Output Mode

Pin Assignment

Quadrature A/B/I Mode 90 pulses per channel

A ?U_A

B ?V_B

I ?W_I

0 ?S

Stepmode 24 pulses and Index width 2

0 ?U_A

0 ?V_B

0 ?W_I

S_24_2 ?S

Stepmode 60 pulses and Index width 2

0 ?U_A

0 ?V_B

0 ?W_I

S_60_2 ?S

Stepmode 90 pulses and Index width 2

0 ?U_A

0 ?V_B

0 ?W_I

S_90_2 ?S

Stepmode 180 pulses and Index width 2

0 ?U_A

0 ?V_B

0 ?W_I

S_180_2 ?S

U,V,W Commutation Mode

(OTP setting)

U ?U_A

V ?V_B

W ?W_I

0 ?S

bsolute position

1 2 3

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