Excerpt from a post to a friend fyi ....
People were discussing alternatives for LM324's recently for 5v single
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
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
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.
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)
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.
At 20:01 19/08/99 +1200, you wrote:
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