Touchstone Semiconductor TS3004DB

The demo board is for the evaluation of the TS3004. The TS3004 is an oscillator/timer, fully specified to operate at a supply voltage range of 1.55V to 5.25V while consuming less than 2.4μA 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 TS3004 timer/oscillator is compact, easy-to-use, and versatile. Optimized for ultra-long life, low frequency, battery-powered/portable applications, the TS3004 is part of the Touchstone’s high-performance “NanoWatt Analog™” series.
The TS3004 requires only an RSET = 4.32MΩ resistor to set the FOUT/PWMOUT output period range to between 40μs and 1.398 minutes. To change the output period, an FDIV2:0 combination can be selected. 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.

5V Supply Voltage
FOUT/PWMOUT Output Period Range: 40μs ≤ tFOUT ≤ 1.398min, RSET = 4.32MΩ
PWMOUT Output Duty Cycle: 75% for FDIV2:0 = 000, CPWM = 100pF
PWMOUT Duty Cycle Reduction with on-board 1MΩ Potentiometer
Fully Assembled and Tested
2in x 2in 2-layer circuit board