Definitely looking more interesting, thanks! -m On 2013-10-08, at 4:54 PM, "Steve Smith" wrote: > Sorry that's a duel MCP3421 is the single $1.8 /100's >=20 > -----Original Message----- > From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf = Of > Marc Nicholas > Sent: 08 October 2013 21:25 > To: Microcontroller discussion list - Public. > Subject: Re: [EE} MCP3221 >=20 > Thanks, Steve. They're a bit pricey for my application (they appear to be > about $2.50), but look like a nice chip. >=20 > -m >=20 > On 2013-10-08, at 4:09 PM, "Steve Smith" wrote: >=20 >> Try an MCp3422 we have use on 2 projects as shunt amplifiers slow but=20 >> very accurate... >>=20 >> Steve >>=20 >> -----Original Message----- >> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On=20 >> Behalf Of Marc Nicholas >> Sent: 08 October 2013 19:14 >> To: Microcontroller discussion list - Public. >> Subject: [EE} MCP3221 >>=20 >> Howdy. >>=20 >> I'm in the market for an ADC.=20 >>=20 >> - Definitely want I2C as the device already has several devices on the > 'bus' >> and we have good, stable I2C code (this is an ARM device) >> - 12-bits (or at least 10 'real' bits) would be preferred >> - Power consumption well below 1mA when converting >> - A standby/shutdown mode that has virtually no quiescent current >> - Small (< 10 mm^2 is preferable) >> - Around a buck in quantity 250 >> - Neither sampling latency (I2C sees to that) or maximum samples per=20 >> second are terribly important -- 1Hz updates would be just fine >>=20 >> The MCP3221 scores well (I2C, comes in a variety of addresses, is=20 >> 12-bit(-ish), <250uA current, <1uA standby, SOT23-5, ~$1.40). And I've=20 >> had decent luck with the cost-features-reliability trifecta with=20 >> Microchip in the past. >>=20 >>> From a search of my mailbox, I see Mr. Axtell used to use these parts=20 >>> -- >> any comments?=20 >>=20 >> Any other recommendations? >>=20 >> TIA. >>=20 >> -m >>=20 >>=20 >> -- >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive=20 >> View/change your membership options at=20 >> http://mailman.mit.edu/mailman/listinfo/piclist >>=20 >> -- >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive=20 >> View/change your membership options at=20 >> http://mailman.mit.edu/mailman/listinfo/piclist >=20 >=20 > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/cha= nge > your membership options at http://mailman.mit.edu/mailman/listinfo/piclis= t >=20 > --=20 > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .