What's a good approach for use at 1MHz, give or take 2:1? Things like the AD630 are slow, and my usualy go-to approach (Gilbert Cell balanced...

What's a good approach for use at 1MHz, give or take 2:1? Things like the AD630 are slow, and my usualy go-to approach (Gilbert Cell balanced demodulator with LO > > Vt) has input referred drift and offset typically in the ~1uV/K and a couple mV. I'd like both to be better by at least an order of magnitude, and preferably with some gain like the Gilbert cell things, which have 15-20dB of ga

We're thinking of sending a wideband (say, dc to 50 MHz) signal using FM. The carrier could be in the 500 MHz to 1 GHz range maybe. I can...

We're thinking of sending a wideband (say, dc to 50 MHz) signal using FM. The carrier could be in the 500 MHz to 1 GHz range maybe. I can get the VCO. What's a good way to do the FM discriminator these days? I could homebrew a quadrature detector, with some resonator and an XOR gate or a mixer, but there must be some easier way to do it. Not being an RF type, I'd appreciate suggestio...

I'm looking for a replacement for the CA3039 diode array, which has been successfully used in a precision demodulator circuit operating up to 1...

I'm looking for a replacement for the CA3039 diode array, which has been successfully used in a precision demodulator circuit operating up to 1 MHz. The part has been obsoleted by Intersil. The important characteristics are low leakage current (less than 0.1 nA at 25C with 1 V reverse bias) and close matching of forward voltage drops. Also, the forward voltage drop with 1 nA or le