LY510ALHTR Просмотр технического описания (PDF) - STMicroelectronics

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производитель

LY510ALHTR

MEMS motion sensor: high performance ±100 °/s analog yaw-rate gyroscope

STMicroelectronics 

Application hints

4

Application hints

LY510ALH

Figure 3. LY510ALH electrical connections and external components values

10nF C2

10kOhm

470nF

R1

C1

GND GND

Vdd

100 nF 10 µF

GND

16

1

14

13

LY510ALH

(Top View)

+ Ωz

(TOP VIEW)

DIRECTION OF THE

DETECTABLE

ANGULAR RATE

HP

PD

Not amplified

ST

filtered output Z

5

6

89

C1

R1

R2

C2

Vref

GND

Typical values:

R1 = 1MOhm

C1 = 4.7 µF

R2 = 33 kOhm

C2 = 2.2 µF to 2.2 µF

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 LY510ALH allows band limiting of 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).

4xOUTZ is OUTZ amplified outputs line, internally buffered to ensure low output impedance.

If external high pass or low pass filtering is not applied it is mandatory to short-circuit pad 9

to pad 10 when amplified outputs are used.

When only non-amplified output is used (OUTZ), it is suggested to set pad 9 to fixed

reference voltage (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 LY510ALH IC includes a PLL (phase locked loop) circuit to synchronize driving and

sensing interfaces. Capacitors and resistors must be added at the FILTVDD and VCONT

pins (as shown in Figure 3) to implement a low-pass filter.

8/12

Doc ID 15800 Rev 2

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