Anyone have suggestions for a simple, small, low-power (e.g. 3.3V @
2mA...) divide-by-two that will go to about 600MHz input? Prefer to go down at least as far as 25MHz input on the low end, and ideally it will operate properly over a 30dB range of input levels, though I'll come up with input signal conditioning if I have to. I could stand a bit higher power if it has a power-down input and responds to power-up within 10usec or so.Cheers, Tom
Probably some PECL part you could AC couple to... connect a resistor between an input and VBB. ...Jim Thompson
-- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC\'s and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | Obama says, "I AM NOT a cry baby, Fox REALLY IS out to get me!"
=A0 =A0 ...Jim Thompson
=A0 =A0| =A0 =A0mens =A0 =A0 |
=A0 | =A0 =A0 et =A0 =A0 =A0|
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=A0 =A0 =A0 |
The (P)ECL parts I've looked at tend to be a bit power-hungry. The MC12093 looks pretty good, actually, at typically 3mA and including a power-down feature. Biggest problem is that it's only spec'd to go down to 100MHz sinewave input. I can work around that, but things get ugly and I'd prefer one of those ideal solutions in one single chip.
Cheers, Tom
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