MCP3201-BI/P Microchip Technology, MCP3201-BI/P Datasheet - Page 19

• Manufacturer Part Number: MCP3201-BI/P
• Description: IC ADC 12BIT 2.7V 1CH SPI 8-DIP
• Manufacturer: Microchip Technology

Specifications of MCP3201-BI/P

• Data Interface: Serial, SPI™
• Operating Temperature: -40°C ~ 85°C
• Number Of Bits: 12
• Sampling Rate (per Second): 100k
• Number Of Converters: 1
• Voltage Supply Source: Single Supply
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Resolution (bits): 12bit
• Input Channel Type: Pseudo Differential
• Supply Voltage Range - Analogue: 2.7V To 5.5V
• Supply Current: 300µA
• No. Of Pins: 8
• Sampling Rate: 100kSPS
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5.0
Communication with the device is done using a
standard SPI-compatible serial interface. Initiating
communication with the MCP3201 device begins with
the CS going low. If the device was powered up with the
CS pin low, it must be brought high and back low to
initiate communication. The device will begin to sample
the analog input on the first rising edge after CS goes
low. The sample period will end in the falling edge of the
second clock, at which time the device will output a low
null bit. The next 12 clocks will output the result of the
conversion with MSB first, as shown in
is always output from the device on the falling edge of
the clock. If all 12 data bits have been transmitted and
the device continues to receive clocks while the CS is
held low, the device will output the conversion result
LSB first, as shown in
provided to the device while CS is still low (after the
LSB first data has been transmitted), the device will
clock out zeros indefinitely.
FIGURE 5-1:
FIGURE 5-2:
© 2008 Microchip Technology Inc.
D
D
CLK
CLK
CS
CS
OUT
OUT
t
SERIAL COMMUNICATIONS
SAMPLE
* After completing the data transfer, if further clocks are applied with CS low, the A/D Converter will output zeros indefinitely.
** t
T SAMPLE
* After completing the data transfer, if further clocks are applied with CS low, the A/D Converter will output LSB first data, followed
** t
node, leaving the CLK running to clock out the LSB-first data or zeros.
by zeros indefinitely. See
HI-Z
DATA
node, leaving the CLK running to clock out the LSB-first data or zeros.
DATA
HI-Z
: during this time, the bias current and the comparator power down and the reference input becomes a high-impedance
: during this time, the bias current and the comparator power down and the reference input becomes a high-impedance
t
SUCS
NULL
BIT
T SUCS
Communication with MCP3201 device using MSB first Format.
Communication with MCP3201 device using LSB first Format.
Figure
B11B10B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
NULL
BIT B11 B10 B9
5-2. If more clocks are
Figure 5-2
t
CONV
Figure
below.
B8
5-1. Data
t
CYC
t
B7
CONV
B6
B5
t
CYC
B4
B3
B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11*
B2
B1 B0*
T CSH
t
DATA
P
t
DATA
OWER
**
P
D
**
HI-Z
OWER
OWN
D
OWN
NULL
MCP3201
BIT
t
CSH
B11 B10 B9
DS21290E-page 19
HI-Z
B8