MCP3426A0-E/MS Microchip Technology, MCP3426A0-E/MS Datasheet - Page 34

• Manufacturer Part Number: MCP3426A0-E/MS
• Description: IC ADC 16BIT I2C PROGBL 8-MSOP
• Manufacturer: Microchip Technology

Specifications of MCP3426A0-E/MS

• Data Interface: I²C, Serial
• Number Of Bits: 16
• Sampling Rate (per Second): 15
• 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): 16bit
• Sampling Rate: 15SPS
• Input Channel Type: Differential
• Supply Voltage Range - Analog: 2.7V To 5.5V
• Supply Current: 145µA
• Digital Ic Case Style: MSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MCP3426/7/8
Figure 6-7
pressure and temperature. The pressure is measured
by using NPP 301 (manufactured by GE NovaSensor),
and temperature is measured by a thermistor. The
pressure sensor output is 20 mV/V. This gives 100 mV
of full scale output for V
voltage).
the number of output code for the full scale output of the
NPP301.
EQUATION 6-3:
The thermistor temperature sensor can measure the
temperature range from -100°C to +300°C. The
resistance of the thermistor sensor decreases as
temperature
coefficient). As shown in
forms a voltage divider with R
The thermistor sensor is simple to use and widely used
for the temperature measurement applications. It has
both linear and non-linear responses over temperature
range. R
for measurement.
DS22226A-page 34
Where:
1 LSB = 62.5 µV with 16 Bit configuration.
Expected
Number of Output Code =
1
Equation 6-3
is used to adjust the linear region of interest
shows an example of measuring both
increases
shows an example of calculating
EXPECTED NUMBER OF
OUTPUT CODE FOR
NPP301 PRESSURE
SENSOR
Figure
DD
=
= 10.6 bits for PGA = 1
= 11.6 bits for PGA = 2
= 12.6 bits for PGA = 4
= 13.6 bits for PGA = 8
(negative
of 5V (sensor excitation
1
.
6-7, the thermistor (R
⎛
⎝
--------------------------------------- -
ln
log
(
1600 PGA
2
⎛
⎜
⎜
⎝
ln
100 mV
-------------------- -
62.5μV
----------------- -
PGA
2 ( )
•
temperature
⎞
⎟
⎟
⎠
)
⎞
⎠
2
)
© 2009 Microchip Technology Inc.