Microchip Technology MCP3901EV-MCU16 データシート
MCP3901
DS22192D-page 2
© 2011 Microchip Technology Inc.
Functional Block Diagram
CH0+
CH0-
CH1+
CH1-
SDO
SDI
SCK
SCK
DUAL DS ADC
SINC
3
-
+
PGA
Xtal Oscillator
MCLK
OSC1
OSC2
DR
RESET
Digital SPI
Interface
Clock
Generation
SINC
3
-
+
PGA
Modulator
AMCLK
DMCLK/DRCLK
Modulator
Output Block
MDAT1
MDAT0
DMCLK
Phase
Shifter
PHASE <7:0>
OSR<1:0>
PRE<1:0>
PRE<1:0>
DATA_CH0<23:0>
DATA_CH1<23:0>
MODOUT<1:0>
MOD<7:0>
CS
REFIN/OUT+
REFIN -
AV
DD
AGND
DGND
DV
DD
POR
AV
DD
Monitoring
POR
Modulator
V
REF
+
V
REF
-
VREFEXT
Voltage
Reference
V
REF
+
-
Δ -Σ
Δ -Σ
Φ
ANALOG DIGITAL
SDN<1:0>, RESET<1:0>, GAIN<7:0>