| ??? 11/08/11 03:24 Read: times |
#184583 - One other quick question for all you smart people. Responding to: ???'s previous message |
Sweet. I2C was a pain in the butt too, making sure you get an ACK or a NACK, blah blah. With SPI, it looks like you select the device with a port pin, then shoot the data out.
One other question, off-topic, if anyone would be so kind.... I planned on scaling a 0-5V Analog signal to a 0-3.3 volt signal for an ADC to read. I was going to use a couple resistors. The thing is, the Voltage signal is at a high frequency (~4kHZ) and will be sampled at around 10-12kHZ. Will I lose any resolution or add any noise to the circuit by doing this, or would I be better off getting an ADC with a 5V VREF? I can provide more info if need be. Thanks. |
| Topic | Author | Date |
| Looking for 8051 that supports high speed I2C | 01/01/70 00:00 | |
| SPI | 01/01/70 00:00 | |
| gotcha | 01/01/70 00:00 | |
| 3.4 MHz I2C | 01/01/70 00:00 | |
| RE: SPI is simpler | 01/01/70 00:00 | |
| One other quick question for all you smart people. | 01/01/70 00:00 | |
| Some things to consider.... | 01/01/70 00:00 | |
| Full range and clipping | 01/01/70 00:00 | |
| Impedance | 01/01/70 00:00 | |
| You sure? | 01/01/70 00:00 | |
| Impedance With Divider | 01/01/70 00:00 | |
Impedance matching | 01/01/70 00:00 | |
| if I recall | 01/01/70 00:00 |