tuning fork oscillator

[kaka_xie]

I am attempting to make a 1Hz signal for a clock. I have found a 32.768KHz tuning fork oscillator made by Guangdong dapu telecom oscillator vendor. Do I just apply voltage to one lead of the oscillator and then the other lead will put out a 32.768Khz signal which I can divide down to a 1Hz signal.

I am aslo wondering about the drive level. The datasheets say it is 1mW. I have a 5V power supply already so I am thinking it would just use 200uA (P=IV .001=5X0.0002)

So in short:

1. how do i make a 1hz signal out of a tuning fork oscillator and some counters.

2. do I need to do anything to sustain the 1mW drive level?

Thanks in advance.

[gyula]

Hi kaka_xie,

Can you give a link to or upload here a data sheet of the tuning fork oscillator?

If the device ( the 32.768KHz tuning fork oscillator) does not include digital divider stages inside the chip which includes the crystal and the oscillator, then probably it does not have an output pin with 1 Hz output. Then probably the output is the 32.768KHz directly.
Here is a link to use a 32.768kHz crystal and two CMOS integrated circuits to get 1Hz from it: Hacker's Bench : Crystal Controlled 1Hz Time Base (Clock)

The CD4060 is able to receive the 32.768kHz clock from your oscillator at one of its clock input pins like 9 or 10, use the same supply voltage for your oscillator and the CD4060 and 4027.

rgds, Gyula