L6460 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

L6460

SPI configurable stepper and DC multi motor driver

STMicroelectronics 

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L6460

17 Operational amplifiers

Operational amplifiers

L6460 contains two rail to rail output, high bandwidth internally compensated operational

amplifiers supplied by VGPIO_SPI pin. The operative supply range is 3.3 V ± 4.5%

Each operational amplifier can have all pin accessible or, to save pins, can be internally

configured as a buffer. They can also be used as comparators; to do that the user must

disable internal compensation by writing a logic level “1” in the OpXCompMode bit in the

OpAmpXCtrl register.

in Figure 26 are reported the block diagrams of the two operational amplifiers.

Figure 26. Configurable 3.3 V operational amplifiers

GPIO[11]

Op1Ref[1:0]

Op1EnIntRef

Op1PlusRef

V GPIO_SPI

Op1CompMode

To A/D System

+

OpAmp 1

-

EnOp1

Op1BufConf

Op1EnPlusPin

GPIO[9]

GPIO[10]

Op1EnMinusPin

EnOp2

Op2BufConf

Op2EnMinusPin

+-

+-

Op2CompMode

V GPIO_SPI

GPIO[13]

GPIO[12]

Op2EnPlusPin

Op2PlusRef

Op2EnIntRef

GPIO[14]

Op2Ref[1:0]

Note:

Op1EnPlusRef and Op2EnPlusRef cannot be used to drive external pin so the user must be

sure not to enable the path between one of these voltage references and the external pin.

Doc ID 17713 Rev 1

87/139

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