TS3006DB datasheet(2/3 Pages) TOUCHSTONE

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TS3006 Demo Board

TS3006DB r1p0

Page 2

RTFDS

DESCRIPTION

The TS3006 requires only an RSET = 4.32MΩ

resistor to set the FOUT/PWMOUT output period to

40µs(25kHz). The complete circuit is designed at a

supply voltage of 5V and it is shown in Figure 1.

The TS3006 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:

O T (

)

1 08 11

S T

Equation 1. FOUT Frequency Calculation

With

RSET

4.32M

Ω,

the

FOUT

period

approximately 40µs (25kHz) with a 50% duty cycle.

As design aids, Tables 1 lists TS3006

’s typical O T

frequency for various standard values for RSET.

QUICK START PROCEDURE

Required Equipment

 TS3006 Demo Board

 DC Power Supply

 Oscilloscope

Model

Agilent

DSO1014A

equivalent

 One 10X

, 15p //10MΩ oscilloscope probe

To evaluate the TS3006 silicon timer, the following

steps are to be performed:

1) Before connecting the DC power supply to the

demo board, turn on the power supply, set the

DC voltage to 5V, and then turn it off.

2) Connect the DC power supply positive terminal to

the test point labeled VDD. Connect the negative

terminal of the DC power supply to the test point

labeled GND.

3) To monitor the FOUT output signal, connect the

signal terminal of an oscilloscope probe to the

test point labeled FOUT and the ground terminal

to the test point labeled GND.

4) Select a channel on the oscilloscope and set the

vertical voltage scale and the vertical position to

2V/DIV and 0V, respectively. Set the horizontal

time scale to 5µs/DIV. The coupling should be

DC coupling. Turn on the power supply.

The supply current will vary depending on the

load on the output. Given the default set-up on

the

board,

the

FOUT

output

period

approximately 40µs. With an output load of 15pF

on FOUT due to the oscilloscope probe, the

supply current should be less than 4µA.

RSET (MΩ)

FOUT (kHz)

0.360

300

108

2.49

43.37

4.32

6.81

15.86

9.76

11.07

Table 1: FOUT vs RSET

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