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MCP19124 Datasheet(PDF) 119 Page - Microchip Technology

Part # MCP19124
Description  Digitally-Enhanced Power Analog Synchronous Low-Side Dual-Loop PWM Controller
PDF  236 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP19124 Datasheet(HTML) 119 Page - Microchip Technology

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 2016 Microchip Technology Inc.
DS20005619A-page 119
MCP19124/5
19.0 ANALOG-TO-DIGITAL
CONVERTER (ADC) MODULE
The
Analog-to-Digital
Converter
(ADC)
allows
conversion of an analog input signal to a 10-bit binary
representation of that signal. This device uses analog
inputs
that
are
multiplexed
into
a
single
sample-and-hold
circuit.
The
output
of
the
sample-and-hold is connected to the input of the
converter. The converter generates a 10-bit binary
result via successive approximation and stores the
right justified conversion result into the ADC result
registers
(ADRESH:ADRESL
register
pair).
Figure 19-1 shows the block diagram of the ADC.
The internal band gap supplies the voltage reference to
the ADC.
FIGURE 19-1:
ADC BLOCK DIAGRAM
Note:
Once
VIN
is
greater
than
AVDD +VDROPOUT, AVDD is in regulation,
allowing A/D readings to be accurate.
Once VIN is greater than VDD +VDROPOUT,
VDD is in regulation. Setting the ADC
reference
to
VDD allows accurate
ratiometric measurements.
GPA0/AN0
VREF
IP_ADJ
VBGR*
EA_SC
OVREF
VS
CHS4: CHS0
ADC
ADON
GO/DONE
ADRESH ADRESL
10
10
AGND
A2
RESERVED
IP_OFF_REF
VIN/n
GPA1/AN1
GPA2/AN2
GPA3/AN3
GPB1/AN4
GPB4/AN5
GPB5/AN6
GPB6/AN7
CHS4: CHS0
VDR/n
TEMP_SNS
PEDESTAL
DLL_VCON
SLPCMP_REF
DD
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
11000
11001
11010
11011
11100
11101
11110
11111
TRI-STATE
10000
10001
10010
10011
EAOR
SPARE
SPARE
SPARE
x0xxx
RESERVED
o
o
VCFG = 0
VCFG = 1
AV
DD
V
MCP19125 only
Note 1: When ADON = 0, all multiplexer inputs are disconnected.
2: Refer to ADCON0 register for detailed analog channel
selection per device.
MCP19125 only
MCP19125 only



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