Thanks, Steve. They're a bit pricey for my application (they appear to be a=
bout $2.50), but look like a nice chip.

-m

On 2013-10-08, at 4:09 PM, "Steve Smith" <xygax@blueyonder.co.uk> wrote:

> Try an MCp3422 we have use on 2 projects as shunt amplifiers slow but ver=
y
> accurate...
>=20
> Steve
>=20
> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On 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 'b=
us'
> 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 seco=
nd
> are terribly important -- 1Hz updates would be just fine
>=20
> The MCP3221 scores well (I2C, comes in a variety of addresses, is
> 12-bit(-ish), <250uA current, <1uA standby, SOT23-5, ~$1.40). And I've ha=
d
> decent luck with the cost-features-reliability trifecta with Microchip in
> the past.
>=20
>> From a search of my mailbox, I see Mr. Axtell used to use these parts --
> any comments?=20
>=20
> Any other recommendations?
>=20
> TIA.
>=20
> -m
>=20
>=20
> --
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>=20
> --=20
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