TS3002 TOUCHSTONE [Touchstone Semiconductor Inc], TS3002 Datasheet - Page 7

• Manufacturer Part Number: TS3002
• Description: A 1V/1uA Easy-to-Use Silicon Oscillator/Timer
• Manufacturer: TOUCHSTONE [Touchstone Semiconductor Inc]

PIN FUNCTIONS
TS3002DS r1p0
PIN
EP
1
2
3
4
5
6
7
8
PWMOUT
BOOST
CNTRL
NAME
FOUT
CSET
RSET
GND
VDD
-----
FUNCTION
Fixed Frequency Output. A push-pull output stage with an output
resistance of 160Ω, the FOUT pin swings from GND to V
lowest power operation, capacitive loads should be minimized
and resistive loads should be maximized.
BOOST Input. A digital switch input, BOOST controls the
propagation delay of the primary timing comparator in the
TS3002’s master oscillator subcircuit. Connecting the BOOST pin
to GND sets the maximum programmable oscillator frequency to
~90kHz.Connecting the BOOST pin to VDD reduces the
comparator’s propagation delay and increases the maximum
programmable master oscillator’s frequency to 290kHz.
Pulse-width Modulated Output. A push-pull output stage with an
output resistance of 160Ω, the PWMOUT pin is wired anti-phase
with respect to FOUT and swings from GND to V
power operation, capacitive loads should be minimized and
resistive loads should be maximized.
PWMOUT Enable and Duty Cycle Control Input. An analog input
pin, the V
and controls the duty cycle at PWMOUT from 12%
(V
PWM engine increases the TS3002’s nominal operating supply
current. To disable the TS3002’s PWM engine, CNTRL shall be
connected to V
FOUT Programming Capacitor Input. A 7.9pF capacitor
connected from this pin to GND in junction with a 4.32MΩ resistor
at the RSET pin sets the TS3002’s internal oscillator’s output
period to ~40µs (25kHz). The maximum capacitance value is
22pF.
Ground – Connect this pin to the system’s analog ground plane.
FOUT Programming Resistor Input. A 4.32MΩ resistor connected
from this pin to GND sets the TS3002’s internal oscillator’s output
period to 40μs (25kHz). For optimal performance, the
composition of the RSET resistor shall be consistent with
tolerances of 1% or lower. The RSET pin voltage is 0.3V at a 1V
supply.
Power Supply Voltage Input. While the TS3002 is fully specified
at 1V, the supply voltage range is 0.9V ≤ V
considered good engineering practice to bypass the V
a 0.1μF ceramic decoupling capacitor in close proximity to the
TS3002.
Exposed paddle is electrically connected to GND.
CNTRL
= 0.03 x V
CNTRL
pin voltage enables the TS3002’s PWM engine
DD
.
DD
) to 90% (V
CNTRL
= 0.27 x V
DD
≤ 1.8V. It is always
DD
DD
). Enabling the
. For lowest
DD
pin with
DD
. For
TS3002
Page 7
RTFDS