MCP3424EV Microchip Technology, MCP3424EV Datasheet - Page 14

• Manufacturer Part Number: MCP3424EV
• Description: EVALUATION BOARD FOR MCP3424
• Manufacturer: Microchip Technology

Specifications of MCP3424EV

• Number Of Adc's: 1
• Number Of Bits: 18
• Sampling Rate (per Second): 3.75 ~ 240
• Data Interface: I²C
• Inputs Per Adc: 4 Differential
• Input Range: ±2.048 V
• Power (typ) @ Conditions: 135µA @ 240sps
• Voltage Supply Source: Single Supply
• Operating Temperature: -55°C ~ 125°C
• Utilized Ic / Part: MCP3424
• Processor To Be Evaluated: MCP3424
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP3424
5.0
5.1
The user operates the device by setting up the device
configuration register and reads the conversion data
using serial I
operates in two modes: (a) Continuous Conversion
Mode or (b) One-Shot Conversion Mode (single
conversion). This mode selection is made by setting
the O/C bit in the Configuration Register. Refer to
Section 5.2 “Configuration Register” for more
information.
5.1.1
The
Conversion if the O/C bit is set to logic “high”. Once the
conversion is completed, RDY bit is toggled to ‘0’ and
the result is placed at the output data register. The
device immediately begins another conversion and
overwrites the output data register with the most recent
result. The device clears the data ready flag (RDY
bit = 0) when the conversion is completed. The device
sets the ready flag bit (RDY bit = 1), if the latest
conversion result has been read by the Master.
• When writing configuration register:
• When reading conversion data:
DS22088A-page 14
- Setting RDY bit in continuous mode does not
- RDY bit = 0 means the latest conversion
- RDY bit = 1 means the conversion result is
affect anything.
result is ready.
not updated since the last reading. A new
conversion is under processing and the RDY
bit will be cleared when the new conversion
result is ready.
MCP3424
Operating Modes
USING THE MCP3424 DEVICE
CONTINUOUS CONVERSION
MODE (O/C BIT =
2
C interface commands. The MCP3424
device
performs
1
)
a
Continuous
5.1.2
Once the One-Shot Conversion (single conversion)
Mode is selected, the device performs only one conver-
sion, updates the output data register, clears the data
ready flag (RDY = 0), and then enters a low power
standby mode. A new One-Shot Conversion is started
again when the device receives a new write command
with RDY = 1.
• When writing configuration register:
• When reading conversion data:
This One-Shot Conversion Mode is highly recom-
mended for low power operating applications where the
conversion result is needed by request on demand.
During the low current standby mode, the device con-
sumes less than 1 µA maximum (or 300 nA typical).
For example, if the user collects 18 bit conversion data
once a second in One-Shot Conversion mode, the
device draws only about one fourth of its total operating
current. In this example, the device consumes approx-
imately 36 µA (135 µA / 3.75 SPS = 36 µA), if the
device performs only one conversion per second
(1 SPS) in 18-bit conversion mode with 3V power
supply.
- The RDY bit needs to be set to begin a new
- RDY bit = 0 means the latest conversion
- RDY bit = 1 means the conversion result is
conversion in one-shot mode.
result is ready.
not updated since the last reading. A new
conversion is under processing and the RDY
bit will be cleared when the new conversion is
done.
ONE-SHOT CONVERSION MODE
(O/C BIT =
© 2008 Microchip Technology Inc.
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