| ??? 01/11/06 19:53 Read: times |
#107084 - Size matters Responding to: ???'s previous message |
Hi dera Jez,
Good to see you back. I would like to use a simple Op-Amp if possible, cause it would occupy less space (SMT). I searched for some discrete Class AB amplifiers the circuits i found had more than 20 parts ! Talking about the PWM OUTPUT I would like to filter it out by an RC or LC filter and then fed it to a single small OP-AMP like LM386. Will this work ? Atmel(In the schematic I've posted) have used 'a 5TH order, low pass Chebychev filter and a unary-gain amplifier'. Dear Jez, I am also intrested to ask some qestions regarding to what PLD device to select to use in a DSO which we are discussing here.I am intersted to use a 7032/64 for reading the samples at 20Mhz rate and store them in a Sram. Maybe I'll post a new thread for this soon. Farshid |
| Topic | Author | Date |
| Simple Op-Amp question | 01/01/70 00:00 | |
| you could use a discreet class b | 01/01/70 00:00 | |
| Size matters | 01/01/70 00:00 | |
that sampling scope looks fun | 01/01/70 00:00 | |
| alternativly | 01/01/70 00:00 | |
| Nice link | 01/01/70 00:00 |