STEVAL-MKI037V1

   

   

   

Application hints

LPY530AL

8/12

 Doc ID 15807 Rev 2

4 Application 

hints

Figure 3.

LPY530AL electrical connections and external components 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 LPY530AL 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 (f

t

 = 140 Hz).

4xOUTX and 4xOUTZ are respectively OUTX and OUTZ 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 not-amplified output are used (OUTX/Z), it is suggested to set pads 5 and 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 LPY530AL 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

4xOUTX

C2

R1

C1

GND

10 µF

GND

Recomended
Low-pass filter

LPY530AL
(Top View)

1

16

14

13

9

8

6

5

10nF

PD

ST

GND

Vref

4x

OU

T

Z

Optional
High-pass filter

Vref

GND

Typical values:

C1

R1

C2

R2

C1

R1

C2

R2

R1 = 1MOhm
C1 = 4.7 uF
R2 = 33kOhm
C2 = 2.2nF to 2.2uF

Not amplified

(TOP VIEW)
DIRECTION OF THE
DETECTABLE
ANGULAR RATES

+Ω

x

+Ω

z

filtered output X

Not amplified

filtered output Z

      Obsolete Product(s) - Obsolete Product(s)

STEVAL-MKI037V1 Information:
Part No.
STEVAL-MKI037V1

RFQ

Description
EVAL BOARD FOR LPY530AL
File Size
231560 bytes
Page Size
595 x 842 pts (A4)
All Pages
12
Manufacturer
STMicroelectronics
Homepage
http://www.st.com/web/en/home.html
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