Frequency (Hz)

100

200

500 1000 2000

5000 10000

100000

-14

-12

-10

-8

-6

-4

-2

0

D011

1

2

1

10 kHz

2

R

C

p ´

´

DRV5053

SLIS153B – MAY 2014 – REVISED SEPTEMBER 2014

www.ti.com

9.2.2.2 Detailed Design Procedure

In this example we will add an external RC filter in order to reduce the output bandwidth.

In order to preserve the signal at the frequencies of interest, we will conservatively select a low-pass filter

bandwidth (–3-dB point) at twice the system bandwidth (10 kHz).

(1)

If we guess R1 = 10 k

Ω, then C2 < 1590 pF. So we select C2 = 1500 pF.

9.2.2.3 Application Curves

R1 = 10-k

Ω pullup

C2 = 680 pF

Figure 15. 5-kHz Switching Magnetic Field

Figure 16. Low-Pass Filtering

10 Power Supply Recommendations

The DRV5053 device is designed to operate from an input voltage supply (VM) range between 2.5 and 38 V. A

14

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