Application hints

LPY450AL

10/14

Doc ID 16580 Rev 1

5

Application hints

Figure 3.

LPY450AL 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 LPY450AL allows band limiting of the output rate response through the use of an

Hz).

The 4xOUTX and 4xOUTZ are, respectively, OUTX and OUTZ amplified output lines,

internally buffered to ensure low output impedance.

If external low-pass filtering is not applied, it is mandatory to short-circuit pin 1 to pin 5 and

pin 16 to pin 20, respectively, when amplified outputs are used.

When only a non-amplified output is used (OUTX/OUTZ), it is recommended to set pin 5

and 16 to a fixed reference voltage (Vref).

The LPY450AL 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.