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SLG46824 Datasheet(PDF) 73 Page - Dialog Semiconductor

Part No. SLG46824
Description  GreenPAK Programmable Mixed Signal Matrix with In System
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Maker  DIALOG [Dialog Semiconductor]
Homepage  http://www.dialog-semiconductor.com/
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SLG46824 Datasheet(HTML) 73 Page - Dialog Semiconductor

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Datasheet
31-Jan-2018
CFR0011-120-01
Revision 2.3
73 of 152
© 2018 Dialog Semiconductor
SLG46824
GreenPAK Programmable Mixed Signal Matrix with In System
Programmability
PRELIMINARY
9
Analog Comparators
There are two General Purpose Rail-to-Rail Analog Comparator (ACMP) macrocells in the SLG46824. In order for the ACMP
cells to be used in a GreenPAK design, the power up signals (ACMP0L_pd and ACMP1L_pd) need to be active. By connecting
to signals coming from the Connection Matrix, it is possible to have each ACMP be on continuously, off continuously, or switched
on periodically based on a digital signal coming from the Connection Matrix. When ACMP is powered down, output is low.
ACMPs are optimized for low power operation.
Each of the ACMP cells has a positive input signal that can be provided by a variety of external sources, and can also have a
selectable gain stage before connection to the analog comparator. Each of the ACMP cells has a negative input signal that is
either created from an internal VREF or provided by way of the external sources.
PWR UP = 1 => ACMP is powered up.
PWR UP = 0 => ACMP is powered down.
During power-up, the ACMP output will remain LOW, and then become valid TBD μs (max) after power up signal goes high for
ACMP0L and ACMP1L. Vref accuracy is optimized near TBD mV selection. Input bias current < 1 nA (typ). The Gain divider is
unbuffered and consists of 1 MΩ resistors. IN- voltage range: 0 – 2.016 V.
It is possible to enable Low Pass Filter (LPF) either on ACMP IN+ or on ACMP OUT.
Each cell also has a hysteresis selection, to offer hysteresis of 0 mV / 32 mV / 64 mV / 192 mV.
ACMP0L IN+ options are IO11
ACMP1L IN+ options are IO12


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