ref. voltage 1,0V

Exactly 1.0V might well be difficult. The Weston standard cell comes close at 1.0183V, but Weston cells tend to be bulky and expensive.

Farnell and other broad line distributors stock a bunch of reference diodes that will give you 1.2V, 1.22V, 1.225V, or 1.235V. I'd go for the Linear Technology LT1004 myself - it is pretty stable and tightly specified

There are cheaper options.

-- Bill Sloman, Nijmegen Bill Sloman, Nijmegen

Less than 2 volts dropout, less than 2mA quiescent.

Better than 2mV stability.

Low cost.

..... Phil

Hi Phil, thanks for answer, but LM317L has Vin-Vout > 3V (value from Datasheet) and I have Vin =3D 3V and Vout about 1,0V.

Fero

"Phil Allison"

Hi Phil, thanks for answer, but LM317L has Vin-Vout > 3V (value from Datasheet) and I have Vin = 3V and Vout about 1,0V.

Shows the dropout voltage (ie when it loses precise regulation) to be 1.6 volts at 10mA load 25C.

With no load it will be somewhat better than that and you have 2.05 volts available.

..... Phil

ADR510ARTZ-REEL7