TS3006 Demo Board
DESCRIPTION
T
he 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:
1 08 11
S T
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 is
approximately 40µs. With an output load of 15pF
on FOUT due to the oscilloscope probe, the
supply current should be less than 4µA.
O T(
)
Equation 1.
FOUT Frequency Calculation
With R
SET
= 4.32MΩ, the FOUT period is
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 R
SET
.
R
SET
(MΩ)
FOUT (kHz)
0.360
300
1
108
2.49
43.37
4.32
25
6.81
15.86
9.76
11.07
12
9
Table 1:
FOUT vs R
SET
QUICK START PROCEDURE
Required Equipment
TS3006 Demo Board
DC Power Supply
Oscilloscope
equivalent
Model
Agilent
DSO1014A
or
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.
TS3006DB r1p0
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