TS3004 datasheet(7/12 Pages) SILABS

No de pièce	TS3004

Description	Single Resistor Sets Output Frequency

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TS3004

TS3004 Rev. 1.0

Page 7

BLOCK DIAGRAM

THEORY OF OPERATION

The TS3004 is a user-programmable oscillator where

the period of the square wave at its FOUT terminal is

generated by an external resistor connected to the

RSET pin. The output period is given by:

tFOUT (s) =

8FDIV2:0 x RSET

1.08E11

Equation 1. FOUT Frequency Calculation where

FDIV2:0 = 0 to 7

RSET (M

Ω)

tFOUT(s)

0.360

6.99

1

19.42

2.49

48.35

4.32

83.89

6.81

132.27

9.76

189.39

12

233

Table 2: tFOUT vs RSET for FDIV2:0 = 111(7)

FDIV

2:0

tFOUT(s)

FOUT (Hz)

ICPWM (A)

000

3.3µ-111.1µs

300k-9k

1µ

001

26.4µ-888.88µs

37.5k-1.125k

1µ

010

211.2µ-7.11ms

4.69k-140.62

100n

011

1.7ms-56.88ms

586-17.578

100n

100

13.6ms-455.16ms

73.25-2.197

100n

101

108.8ms-3.64

9.16-0.2746

100n

110

870.4ms-29.15

1.14-0.0343

100n

111

6.99-233

0.143-0.00429

100n

Table 1: FOUT and PWMOUT Frequency Range per FDIV2:0 Combination

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