STEVAL-IFS002V1 STMicroelectronics, STEVAL-IFS002V1 Datasheet - Page 11

• Manufacturer Part Number: STEVAL-IFS002V1
• Description: BOARD EVALUATION FOR STR9 MEMS
• Manufacturer: STMicroelectronics
• Series: MEMSr

Specifications of STEVAL-IFS002V1

• Design Resources: STEVAL-IFS002V1 Gerber Files STEVAL-IFS002V1 Schematic STEVAL-IFS002V1 Bill of Material
• Sensor Type: Gyroscope and Accelerometer
• Sensing Range: ±2g, 8g
• Interface: Analog and Digital
• Embedded: No
• Utilized Ic / Part: LIS302ALB, LIS302DL
• Processor To Be Evaluated: STR9
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8375; STEVAL-IFS002V1

UM0376
5
5.1
5.2
Bill of materials and assembly instructions
Table 6
provide additional information on assembly.
Assembly information for analog MEMS
1.
2.
3.
Assembly information for digital MEMS
1.
2.
3.
When U10 LD2980CMxx is not assembled use R100 instead. For low voltage MEMS
use a voltage regulator. The maximum supply current is around 1.5 mA per device.
Operational amplifiers are optional.
a)
b)
c)
d)
Only ONE analog MEMS can be assembled. MEMS analog output pins are shared.
When U11 LD2980CMxx is not assembled, use R110 instead. For low voltage MEMS
use a voltage regulator. Maximum supply current is around 1.5 mA per device.
Both I
a)
b)
c)
The board is designed to have one MEMS assembled on the board although I
SPI allows more devices to be used simultaneously. Care should be taken, however
with the RDY/INT pins, as they are shared.
to
If they are not necessary, use resistors R80, R81, R82, R83 instead.
If they are required, use operational amplifiers with the following resistor
configuration.
R80, R81, R82, R83 - not assembled
R84, R86, R88, R90 - not assembled
R85, R87, R89, R91 - assembled with 0R.
To alter the gain of the operational amplifiers, use following resistor configuration.
R80, R81, R82, R83 - not assembled
The gain is determined by configuration of R84, R86, R88, R90 and R85, R87,
R89, R91.
In all cases it is recommended to have assembled filtering capacitors C84, C85,
C86, C87. Default is 10 nF, but this can be changed according to the required
filtering features.
The unused interface must be selected as floating input or third state.
When using I
which are 4.7 kΩ pull-ups.
When using SPI, each device has its own chip select.
Table 15
2
C and SPI are wired.
show the bill of materials, while sections
2
C, it is recommended to have assembled resistors R01 and R02
Bill of materials and assembly instructions
Section 5.1
to
Section 5.3
2
C and
11/17