MPL115A1 Freescale Semiconductor, MPL115A1 Datasheet - Page 4

• Manufacturer Part Number: MPL115A1
• Description: Board Mount Pressure Sensors SPI VERSION PEGASUS
• Manufacturer: Freescale Semiconductor
• Type: Absoluter

Specifications of MPL115A1

• Operating Pressure: 50 kPa to 115 kPa
• Pressure Type: Absolute
• Output Type: Digital
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 3.3 V
• Supply Voltage (min): 2.375 V
• Supply Voltage (max): 5.5 V
• Supply Current: 5 uA
• Package / Case: LGA-8
• Digital Output - Number Of Bits: 10
• Output Voltage: 0.4 V to 0.6 V
• Shutdown: Yes
• Pressure Range: 50 to 115KPa
• Mounting: Surface Mount
• Pin Count: 8
• Operating Temp Range: -40C to 105C
• Operating Temperature Classification: Industrial
• Package Type: LGA
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 2.375V
• Operating Supply Voltage (max): 5.5V
• Lead Free Status / Rohs Status: Compliant

MPL115A1
4
Coefficient Bit-Width Specs
The table below specifies the initial coefficient bit-width specs for the compensation algorithm.
Example Binary Format Definitions:
NOTE: Negative coefficients (Sign = 1) are coded in 2’s complement notation.
Coefficient Address Map
For coefficients with less than 16 bits, the lower LSBs are zero. For example, c11 is 11 bits and is stored into 2 bytes as follows:
dec pt zero pad
Fractional Bits
Integer Bits
Pressure
Total Bits
1.
2.
3.
4.
Sign Bits
Sign = 0, Integer Bits = 8, Fractional Bits = 4 :
Sign = 1, Integer Bits = 4, Fractional Bits = 7 :
Sign = 0, Integer Bits = 0, Fractional Bits = 6, dec pt zero pad = 2 : Coeff = S 0 . 0 0 F
Sign = 0, Integer Bits = 0, Fractional Bits = 5, dec pt zero pad = 3 : Coeff = S 0 . 0 0 0 F
c11 MS byte = c11[10:3] = [c11
c11 LS byte = c11[2:0] & “00000” = [c11
Address
$0C
$0D
$04
$05
$06
$07
$08
$09
$0A
$0B
$0E
$0F
a0
16
12
—
1
3
10-bit Output: Compensation Coefficient Specs
b1
16
13
—
1
2
b10
, c11
b9
b2
b2
16
14
—
1
1
, c11
, c11
b8
b1
, c11
, c11
b7
b0
c12
14
13
, c11
, 0 , 0 , 0 , 0 , 0]
1
0
9
b6
Coeff = S I
Coeff = S I
, c11
c12 MS Byte
c11 MS Byte
c22 MS Byte
c12 LS Byte
c11 LS Byte
c22 LS Byte
Coefficient
a0 MS Byte
b1 MS Byte
b2 MS Byte
a0 LS Byte
b1 LS Byte
b2 LS Byte
b5
, c11
c11
7
3
11
11
11
1
0
I
I
6
2
b4
I
I
5
1
, c11
I
I
4
0 .
I
5
3
F
F
4
I
b3
6
2
4
F
F
I
F
]
3
Freescale Semiconductor
1
5
3
F
I
F
0 .
F
2
4
2
F
c22
F
F
11
10
15
F
1
1
0
3
3
1
F
F
F
F
0
2
2
0
F
F
1
1
F
F
0
0
Sensors
Coeff.
Total
Bits
84