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LPR530ALTR Datasheet(PDF) 8 Page - STMicroelectronics |
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LPR530ALTR Datasheet(HTML) 8 Page - STMicroelectronics |
8 / 12 page Application hints LPR530AL 8/12 Doc ID 15812 Rev 2 4 Application hints Figure 3. LPR530AL electrical connections and external component values Power supply decoupling capacitors (100 nF ceramic or polyester + 10 µF Aluminum) should be placed as near as possible to the device (common design practice). The LPR530AL allows band limiting the output rate response through the use of an external low pass filter (suggested) and/or high pass filter (optional) in addition to the embedded low pass filter (ft = 140 Hz). 4xOUTX and 4xOUTY are respectively OUTX and OUTY amplified outputs lines, internally buffered to ensure low output impedance. If external high pass or low pass filtering is not applied it is mandatory to short-circuit respectively pad 4 to pad 5 and pad 9 to pad 10 when amplified outputs are used. When only non-amplified outputs are used (OUTX/Y), it is suggested to set pads 5 and 9 to fixed reference voltages (GND/Vref). When high pass filter is applied to not amplified output (OUTx), it is recommended to buffer the line before entering ADC for performance optimization. The LPR530AL IC includes a PLL (Phase Locked Loop) circuit to synchronize driving and sensing interfaces. Capacitors and resistors must be added at FILTVDD and VCONT pins (as shown in Figure 3) to implement a low-pass filter. 100 nF 10kOhm 470nF Vdd GND HP Vref C2 R1 C1 GND 10 µF GND Recomended Low-pass filter LPR530AL (Top View) 1 16 14 13 9 8 6 5 10nF PD ST GND Optional High-pass filter Vref GND Typical values: C1 R1 C2 R2 C1 R1 C2 R2 R1 = 1MOhm C1 = 4.7 µF R2 = 33kOhm C2 = 2.2 nF to 2.2 µF Not amplified (TOP VIEW) DIRECTION OF THE DETECTABLE ANGULAR RATES filtered output Y Not amplified filtered output X +Ω Y +Ω X |
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