MPL015A2 FREESCALE | Alldatasheet
Document overview
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- PDF pages: 8
Technical content
Features
- Digitized pressure and temperature information together with programmed calibration coefficients for host micro use.
- Factory Calibrated
- 50 kPa to 115 kPa Absolute Pressure
- 1 kPa Accuracy
- 2.375 V to 5.5 V Supply
- Integrated ADC 2C Interface
- Monotonic Pressure and Temperature Data Outputs
- Surface Mount RoHS Compliant Package
ORDERING INFORMATION
Device Name Package Options Case No. # of Ports Pressure Type Digital InterfaceNone Single Dual Gauge Differential Absolute MPL015A2T1 Tape & Reel 2015 • • I2C Pin Description PIN NAME FUNCTION 1 VDD VDD Power Supply Connection.
2 CAP External Capacitor
3 GND Ground
4 SHDN Shutdown (Sleep): Connect to GND to disable the device.
5 RST Reset: Drive line low to disable I
2C communications. 6 NC NC: No connection. 7S D A (1) SDA: Serial data I/O line. 8S C L (1) I2C Serial Clock Input. 1. Use 4.7k pull-up resistors for I2C communication. MPL015A2 50 to 115 kPa MPL015A2 5.0 mm X 3.0 mm X 1.2 mm MAX LGA PACKAGE NC SDA VDD CAP SHDN GND RST SCL PIN CONNECTIONS Application Examples
- Barometry (portable and desk-top)
- Altimeters
- Weather Stations
- Hard Disk-Drives (HDD)
- Industrial Equipment
- Health Monitoring
- Air Control Systems
2 Freescale Semiconductor
Voltage (with respect to GND unless otherwise noted) Operating Characteristics Ref Parameters Symbol Conditions Min Typ Max Units 1 Operating Supply Voltage VDD 2.375 3.3 5.5 V 2 Supply Current IDD Shutdown (SHDN = GND) @ 25ºC — 0.06 1 μA Standby — 3.5 10 μA Average – at one measurement per second — 5 6 μA Pressure Sensor
3 Range 50 — 115 kPa
4 Resolution —0 . 1 5 —k P a
5 Accuracy @ 25ºC — ±1 — kPa
6 Accuracy Change over
— ±0.125 — kPa/ºC 7 Power Supply Rejection Typical operating circuit at DC — 0.1 — kPa/V 100 mV p-p 217 Hz square wave plus 100 mV pseudo random noise with 10 MHz bandwidth. —0 . 1 — k P a
8 Conversion Time
(Start Pressure Convert) tcp Time between start convert command and data available in the Pressure register —0 . 6 0 . 7 m s Temperature Sensor
9 Range -40 — 105 ºC
10 Conversion Time
(Start Temperature Convert) tct Time between start convert command and data available in the Temperature register —0 . 6 0 . 7 m s
11 Conversion Time
(Start Both Convert) tcb Time between start convert command and data available in the Pressure and Temperature registers —0 . 8 1 m s 12 Resolution Temperature ADC is 472 counts @ 25ºC — -5.35 — counts/ºC I2C I/O Stages: SCL, SDA
13 SCL Clock Frequency f SCL — — 400 KHz
14 Low Level Input Voltage VIL — — 0.3V DD V 15 High Level Input Voltage VIH 0.7V DD —— V I2C Outputs: SDA
16 Data Setup Time t SU Setup time from command receipt to ready to
100 — — ns I2C Addressing MPL015A2 uses 7-bit addressing, does not acknowledge the general call address 0000000. Slave address has been set to 0x60 or 1100000.
Figure 1. Block Diagram
4 Freescale Semiconductor
Coefficient Bit-Width Specs The table below specifies the initial coefficient bit-width specs for the compensation algorithm. * Factory reserves the option to make these values = 0. Example Binary Format Definitions: 1. Sign = 0, Integer Bits = 8, Fr actional Bits = 4 : Coeff = S I 7 I6 I5 I4 I3 I2 I1 I0 . F3 F2 F1 F0 2. Sign = 1, Integer Bits = 4, Fr actional Bits = 7 : Coeff = S I 3 I2 I1 I0 . F6 F5 F4 F3 F2 F1 F0 3. Sign = 0, Integer Bits = 0, Fractional Bits = 6, dec pt zero pad = 2 : Coeff = S 0 . 0 0 F5 F4 F3 F2 F1 F0 4. Sign = 0, Integer Bits = 0, Fractional Bits = 5, dec pt zero pad = 3 : Coeff = S 0 . 0 0 0 F4 F3 F2 F1 F0 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, c14 is 14 bits and is stored into 2 bytes as follows: c14 MS byte = c14[10:3] = [c14b13 , c14b12 , c14b11 , c14b10 , c14b9 , c14b8 , c14b7 , c14b6] c14 LS byte = c14[2:0] & “00000” = [c14b5 , c14b4 , c14b3 , c14b2 , c14b1 , c14b0 , 0 , 0] 10-bit Output: Compensation Coefficient Specs Total Coeff. Bits a0 b1 b2 c12 Total Bits 16 16 16 14 62 Sign Bits 1 1 1 1 Integer Bits 12 2 1 0 Fractional Bits 4 13 14 13 dec pt zero pad — — — 9 Address Coefficient $04 a0 MS Byte $05 a0 LS Byte $06 b1 MS Byte $07 b1 LS Byte $08 b2 MS Byte $09 b2 LS Byte $0A c12 MS Byte $0B c12 LS Byte
- Use SAC solder alloy (i.e., Sn-Ag-Cu) with a meltin g point of about 217°C. It is recommended to use SAC305 2. Reflow
- Ramp up rate: 2 to 3 C/s.
- Preheat flat (soak): 110 to 130s.
- Reflow peak temperature: 250°C to 260°C (depends on exact SAC alloy composition).
- Time above 217°C: 40 to 90s (depends on board type, thermal mass of the board/quantities in the reflow).
- Ramp down: 5 to 6 C/s.
- Using an inert reflow environment (with O2 level about 5 to 15 ppm). NOTE: The stress level and signal offset of the device also depends on the board type, board core material, board thickness and metal finishing of the board. Handling Recommendations It is recommended to handle the MPL015A2 pressure sensor with a vacuum pick and place tool. Sharp objects utilized to move the MPL015A2 pressure sensor increase the possibility of damage via a foreign object/tool into the small exposed port. The sensor die is sensitive to light exposure. Direct light exposure through the port hole can lead to varied accuracy of pressure measurement. Avoid such exposure to the port during normal operation.
6 Freescale Semiconductor
Rev. 1 Information in this document is provided solely to enable system and software implementers to use Freescale Semiconductor products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. Freescale Semiconductor reserves the right to make changes without further notice to any products herein. Freescale Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Freescale Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters that may be provided in Freescale Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”, must be validated for each customer application by customer’s technical experts. Freescale Semiconductor does not convey any license under its patent rights nor the rights of others. Freescale Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Freescale Semiconductor product could create a situation where personal injury or death may occur. Should Buyer purchase or use Freescale Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold Freescale Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Freescale Semiconductor was negligent regarding the design or manufacture of the part. Freescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc., respective owners. © Freescale Semiconductor, Inc. 2010. All rights reserved. How to Reach Us: Home Page: www.freescale.com Web Support: http://www.freescale.com/support USA/Europe or Locations Not Listed: Freescale Semiconductor, Inc. Technical Information Center, EL516
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