MCP3901EV-MCU16 Microchip Technology, MCP3901EV-MCU16 Datasheet - Page 44

• Manufacturer Part Number: MCP3901EV-MCU16
• Description: BOARD EVAL FOR 2CH ADC MCP3901
• Manufacturer: Microchip Technology

Specifications of MCP3901EV-MCU16

• Number Of Adc's: 2
• Number Of Bits: 24
• Data Interface: SPI™
• Inputs Per Adc: 1 Differential
• Input Range: ±1 V
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: MCP3901
• Silicon Manufacturer: Microchip
• Application Sub Type: ADC
• Kit Application Type: Data Converter
• Silicon Core Number: MCP3901, PIC24F, PIC24H, DsPIC33, PIC18F86J55
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MCP3901
7.3
The PHASE register (PHASE<7:0>) is a 7 bits + sign,
MSB first, two’s complement register that indicates how
much phase delay there should be between Channel 0
and Channel 1.
The reference channel for the delay is Channel 1 which
typically, is the voltage channel when used in energy
metering applications (i.e., when PHASE register code
is positive, Channel 0 is lagging Channel 1).
When PHASE register code is negative, Channel 0 is
leading versus Channel 1.
The delay is given by the following formula:
EQUATION 7-1:
REGISTER 7-3:
DS22192C-page 44
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
PHASE<7>
R/W-0
PHASE Register
Delay
PHASE<7:0>: CH0 Relative to CH1 Phase Delay bits
Delay = PHASE Register’s two’s complement code/DMCLK (Default PHASE = 0).
PHASE<6>
=
R/W-0
Phase Register Code
------------------------------------------------- -
PHASE REGISTER (PHASE): ADDRESS 0x07
DMCLK
W = Writable bit
‘1’ = Bit is set
PHASE<5>
R/W-0
PHASE<4> PHASE<3>
R/W-0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-0
7.3.1
The timing resolution of the phase delay is 1/DMCLK,
or 1 µs, in the default configuration (MCLK = 4 MHz).
The PHASE register coding depends on the OSR
setting:
• OSR = 256: The delay can go from -128 to +127.
• OSR = 128: The delay can go from -64 to +63.
• OSR = 64: The delay can go from -32 to +31.
• OSR = 32: The delay can go from -16 to +15.
PHASE<7> is the sign bit. Phase<6> is the MSB
and PHASE<0> the LSB.
PHASE<6> is the sign bit. Phase<5> is the MSB
and PHASE<0> the LSB.
PHASE<5> is the sign bit. Phase<4> is the MSB
and PHASE<0> the LSB.
PHASE<4> is the sign bit. Phase<3> is the MSB
and PHASE<0> the LSB.
PHASE<2>
PHASE RESOLUTION FROM OSR
R/W-0
© 2010 Microchip Technology Inc.
x = Bit is unknown
PHASE<1>
R/W-0
PHASE<0>
R/W-0
bit 0