MCP3550-50E/MS Microchip Technology, MCP3550-50E/MS Datasheet - Page 19

• Manufacturer Part Number: MCP3550-50E/MS
• Description: IC ADC 22BIT 2.7V 1CH 8MSOP
• Manufacturer: Microchip Technology

Specifications of MCP3550-50E/MS

• Data Interface: Serial, SPI™
• Number Of Bits: 22
• Sampling Rate (per Second): 12.5
• Number Of Converters: 1
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
• Resolution (bits): 22bit
• Sampling Rate: 12.5SPS
• Input Channel Type: Differential
• Supply Voltage Range - Analog: 2.7V To 5.5V
• Supply Current: 120µA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP355XDV-MS1 - BOARD DEV SENSOR APP MCP355XMCP355XDM-TAS - BOARD DEMO TINY APP SNSR MCP355X
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Once a power-up event has occurred, the device must
require additional time before a conversion can take
place. During this time, all internal analog circuitry must
settle before the first conversion can occur. An internal
timer counts 32 internal clock periods before the
internal oscillator can provide clock to the conversion
process. This allows all internal analog circuitry to
settle to their proper operating point. This timing is
typically less than 300 µs, which is negligible compared
to one conversion time (e.g. 72.7 ms for the
MCP3551).
power-up and power-down event under typical start-up
conditions.
FIGURE 4-6:
4.7
When not internally converting, the two modes of
operation for the MCP3550/1/3 devices are the
Shutdown and Sleep modes. During Shutdown mode,
all internal analog circuitry, including the POR, is turned
off and the device consumes less than 1 µA. When
exiting Shutdown mode, the device must require
additional time before a conversion can take place.
During this time, all internal analog circuitry must settle
before the first conversion can occur. An internal timer
counts 32 internal clock periods before the internal
oscillator can provide clock to the conversion process.
This allows all internal analog circuitry to settle to their
proper operating point. This timing is typically less than
300 µs, which is negligible compared to one conversion
time (72.7 ms for MCP3551).
© 2009 Microchip Technology Inc.
V
2.2V
2.0V
DD
0V
Shutdown Mode
Reset
Figure 4-6
Start-up
300 µs
Power-On Reset Operation.
illustrates the conditions for a
Operation
Normal
Reset
Time
4.8
During Sleep mode, the device is not converting and is
awaiting data retrieval; the internal analog circuitry is
still running and the device typically consumes 10 µA.
In order to restart a conversion while in Sleep mode,
toggling CS to a logic-high (placing the part in Shut-
down mode) and then back to a logic-low will restart the
conversion. Sleep can only be entered in Single
Conversion mode. Once a conversion is complete in
Single Conversion mode, the device automatically
enters Sleep mode.
Sleep Mode
MCP3550/1/3
DS21950E-page 19