Doc ID 15807 Rev 2
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
= 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
) to implement a low-pass filter.
R1 = 1MOhm
C1 = 4.7 uF
R2 = 33kOhm
C2 = 2.2nF to 2.2uF
DIRECTION OF THE
filtered output X
filtered output Z
Obsolete Product(s) - Obsolete Product(s)