|Touchstone Semiconductor's TS3005 is a single-supply, second-generation semi oscillator/timer, fully specified to operate over a supply voltage range of 1.55 V to 5.25 V while consuming 1.35 μA supply current. The device requires only a resistor to set the base output frequency (or output period) at 49 Hz (or 20.5 ms) with a 50% duty cycle. Optimized for ultra-long life, low-frequency, battery-powered/portable applications, the TS3005 joins the TS3001, TS3002, TS3003, TS3004, and TS3006 in Touchstone’s CMOS timer family, as part of its “NanoWatt Analog™” series of high-performance analog integrated circuits.
Including an internal 3-bit counter, the TS3005 output period can be user-adjusted from 1.7 ms to 33 hr without additional components. In addition, the TS3005 represents a 25% reduction in PCB area and a factor-of-10, lower-power consumption over other CMOS-based integrated circuit oscillators/timers. When compared against industry-standard 555-timer-based products, the TS3005 offers up to 84% reduction in PCB area and over three orders of magnitude lower-power consumption.
The TS3005 is fully specified over the −40°C to +85°C temperature range and is available in a low-profile, 10-pin 3 mm x 3 mm TDFN package with an exposed back-side paddle.