STEVAL-MKI023V1 STMicroelectronics

STEVAL-MKI023V1 Single-axis 300/s analog output yaw rate gyroscope demonstration board based on the LISY300AL Data Brief Features Operating input DC voltage between 3.7 V and 18 V Low power consumption Embedded power-down 300/s full scale Absolute analog rate output Integrated low-pass filters Embedded self-test Description The STEVAL-MKI023V1 is a demonstration board designed to provide the user with a complete, ready-to-use platform for the evaluation of the LISY300AL. The LISY300AL is a low-power single-axis yaw rate sensor. It includes a sensing element and an IC interface able to provide the measured angular rate to the external world through an analog output voltage. STEVAL-MKI023V1 In addition to the MEMS sensor, the system includes a linear voltage regulator and a rail-to-rail low noise quad amplifier configured as a non- inverting buffer, making both direct sensor outputs and buffered sensor outputs available to the user. This demonstration board also provides an easy way to control the self-test and power-down pins. January 2009 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. www.st.com 4 Obsolete Product(s) - Obsolete Product(s)Circuit schematic STEVAL-MKI023V1 1 Circuit schematic Figure 1. Circuit schematic LE33 linear voltage regulator TS924 rail to rail Low noise Quad operational amplifier J4 Aout B 1 VDD Buffered Output 2 J2 U2 J1 1 8 2 1 8 2 2 7 1 2 7 1 C1 C2 3 6 3 6 2.2uF 100nF psr 4 5 Power Supply J5 4 5 Aout 1 LE33 Sensor Output 2 C5 VDD 10nF C3 C4 10uF 100nF VDD C6 R1 470nF 10K U1 Gyroscope 1 21 NC Rsrvd 2 20 GND Rsrvd 3 19 GND Rsrvd 4 18 NC Rsrvd 5 17 CACT Rsrvd 6 16 Cact Aout Rsrvd 7 15 4.7nF NC NC C8 VDD 470pF 2 In- 1 3 In+ U3A TS922 VDD J6 Self Test 1 2 C7 VDD 1uF J3 1 6 Power Down In- 2 Aout B 7 5 Aout R2 R3 In+ 10K 10K U3B TS922 AM03294v1 2/4 Obsolete Product(s) - Obsolete Product(s) - + - + Aout 8 28 NC NC 9 27 NC VDD PD 10 26 PD VDD ST 11 25 ST VDD 12 24 Rsrvd FILTVDD 13 23 Rsrvd VCONT 14 22 NC NC