Does anyone know of any low cost a/d converters than are easy to interface via SPI, rs232. The performance requirements are the following 1. 8 bit resolution, min, more if not scalable inputs. 2. Sample and hold input preferably with scaling. 3. input voltages from + - 1 volts. 4. conversion rate of <10/sec 5. packaging not surface mount for ease of prototype assembly. thanks for any information.
a/d convertor
Started by ●January 17, 2006
Reply by ●January 17, 20062006-01-17
While I don't know of any specific devices to recommend to you, try different manafacturers web pages, such as analog devices, texas instruments, microchip, etc, all of which have parametric search tables that will help you locate a suitable device. Digikey is also a pretty good place to look as their search system is geared towards parameter constraints.
Reply by ●January 17, 20062006-01-17
cel@nospam.net wrote:> Does anyone know of any low cost a/d converters than are easy to interface > via SPI, rs232. The performance requirements are the followingGoogle returns 651 hits on "SPI A2D". RS232 would be difficult to find.> 1. 8 bit resolution, min, more if not scalable inputs.No problem at all.> 2. Sample and hold input preferably with scaling.Not a problem.> 3. input voltages from + - 1 volts.No problem.> 4. conversion rate of <10/secNo prob.> 5. packaging not surface mount for ease of prototype assembly.That's tough. Perhaps easy to solder SMD. SMDs are not so difficult. We can handle almost all SMD except fine-pitch (<1mm) BGA. Even for BGA, the problem is making a good PCB, not with the BGA itself.> > thanks for any information.