Low voltage LM324 from Nat Semi is LMV324. This operates from 2.2V to 5.0V
and gain bandwidth is 1 MHz and cost around $0.25 for 100 off.

Again you could try MICROCHIP with your PIC. MCP604 is same pin out as
LM324 and operates from 2.2V to 5.0V. Gain-Bandwith is 2.8MHz. You can get
thid for about  $0.80 for 100 off.

There is a low voltage LM324 from JRC for less than $0.15 for 100off but I
can't remember the number.

Regards,

Jay



At 20:01 19/08/99 +1200, you wrote:
>PICList
>
>Excerpt from a post to a friend fyi ....
>
>People were discussing alternatives for LM324's recently for 5v single
>supply operation.
>There are a number of single supply amps available on the market.
>Many sacrifice rail to rail for performance.
>Here's one which is a much better performer than the LM324 but which
>operates on a maximum of 5.25 volts "Vcc" and down to around 2 volts.
>Gain bandwidth is 10+ MHz and slew rate is 10V/uS plus. Makes a LM324 look
>very very slow (which it is)
>These come in single / dual / quad versions.
>The only bad thing I can see about them is the price - in ones they are
>from $US2.58 for the single to $US6.40 for the quad (cheapest version of
>each).
>
>
>RM
>
>
>==================================================
>
>MAX 473 single
>MAX 474 dual
>MAX 475 quad
>
>Quad has 324 pinout.
>Guess 474 has 358 pinout probably.
>
>MAX !!! Vcc = 5.25v
>Min Vcc is 2.x afair
>
>From memory 10-15 MHz gbw
>10 V/uS ish slew
>2ma /amp
>
>Common mode is V+-about 1.3V down to V--0.1v
>
>Dual and single in 8 dil
>
>Their sole datasheet cct is a 200 KHz band pass filter - don't try this at
>home with a 324.
>4V output at 600 KHz.
>
>$US 1/25/100
>
>Single    2.58    2.23    1.59
>Dual     4.00    3.46    2.47
>Quad    6.42    5.54    3.96
>
>PDF pricelist is 284 pages of close spaced figures (one item per line)
>
>
>