TS3003 Demo Board
A 1.55V to 5.25V, 1.9µA, 9kHz to 300kHz Silicon Timer
FEATURES
5V Supply Voltage
FOUT/PWMOUT Output Period: 40µs(25kHz)
o
RSET = 4.32MΩ
PWMOUT Output Duty Cycle:
o
75% for FDIV2:0 = 000
o
CPWM = 100pF
PWMOUT Duty Cycle Reduction
o
1MΩ Potentiometer
Fully Assembled and Tested
2in x 2in 2-layer circuit board
DESCRIPTION
The TS3003 is a single-supply, second-generation
Touchstone Semi oscillator/timer fully specified to
operate at a supply voltage range of 1.55V to 5.25V
while consuming less than 2.4μA(max) supply
current. Requiring only a resistor to set the base
output frequency (or output period) at 25kHz (or
40µs) with a 50% duty cycle, the TS3003
timer/oscillator is compact, easy-to-use, and versatile.
Optimized for ultra-long life, low frequency,
battery-powered/portable applications, TS3003 joins
the TS3001, TS3002, TS3004, and TS3006 in
Touchstone’s CMOS timer family in its “NanoWatt
Analog™” series of high-performance analog
integrated circuits.
The TS3003 requires only an RSET = 4.32MΩ
resistor to set the FOUT/PWMOUT output period to
40µs(25kHz). With an on-board 100pF CPWM
capacitor, the duty cycle of PWMOUT is set at
approximately 75%. Further reduction of the duty
cycle is available with an on-board 1MΩ
potentiometer. The complete circuit is designed at a
supply voltage of 5V. The TS3003 is fully specified
over the -40°C to +85°C temperature range and is
available in a low-profile, 10-pin 3x3mm TDFN
package with an exposed back-side paddle.
Product datasheet and additional documentation can
be
found
on
the
factory web
site
at
COMPONENT LIST
DESIGNATION
C1
C2
R2
R1
PWM_ADJ
U1
VDD,F_OUT,
PWM_OUT
J1
QTY
1
1
1
1
1
1
3
1
DESCRIPTION
100pF ±10%
capacitor (0805)
4.7µF ±10%
capacitor (0805)
10MΩ ± 1% (0805)
4.32MΩ ± 1% (0805)
1MΩ Potentiometer
TS3003
Test points
Jumper
ORDERING INFORMATION
Order Number
TS3003DB
Description
TS3003
Demo Board
Figure 1. TS3003 Demo Board Circuit
Page 1
© 2013 Touchstone Semiconductor, Inc. All rights reserved.
TOUCHSTONE [ TOUCHSTONE SEMICONDUCTOR INC ]
