Sanyo LA1837 Tuner Chip

[dinger]

So I have a NAD C427 tuner that uses this chip. The tuner has no signal meter but some data sheet research reveals this chip does have a signal strength output. (0 to 0.2V)
I assume the tuner is only using this to select when to pause a scan or when to kick in mono blending. What are the chances I could tap into this for actual signal strength monitoring? I've scouted out both analog and powered digital voltmeters suitable for the task. I can make the connections no problem. I guess my concern is loading the circuit too much or this is just a silly idea.

 

[Bob@FM]

yes - pin 11 goes from "typical" readings of 0.1 to 4.3 V for weak signals (0 dBu) to strong (100dBu) signals. Most modern voltmeters have a high impedance input, i.e. 1M ohm or greater. Check it's data sheet. I would use shielded cable for a permanent connection.
In general, this pin can also be used to peak the L and C for RF alignment on tuners without a signal meter. Alternately, one can probe the IF signal path for RF alignment.