RoHS Compliance Information	Size in Kbytes	Date
ADC081C021/ADC081C027 I 2 C-Compatible, 8-Bit Analog-to-Digital Converter with Alert Function	790 Kbytes	5-Feb-09	Download

Part Number

Package

Factory Lead Time

Models

Samples & Electronic Orders

Budgetary Pricing

Std Pack Size

Package Marking Format

Type

Pins

Spec.

MSL Rating

Peak Reflow

RoHS Report

CAD Symbols

Weeks

Qty

Qty

$US each

ADC081C021XEB

evaluation board

Full production

N/A

CALL

N/A

-

N/A

N/A

ADC081C021CIMK

TSOT

6

NOPB

1

260

RoHS

N/A

Full production

N/A

1K+

$0.85

reel of 1000

X34C XTT

8 weeks

N/A

ADC081C021CIMKX

TSOT

6

NOPB

1

260

RoHS

N/A

Full production

N/A

1K+

$0.85

reel of 3000

X34C XTT

6 weeks

N/A

ADC081C021CIMM

MINI SOIC

8

NOPB

1

260

RoHS

N/A

Full production

N/A

1K+

$0.72

reel of 1000

ZXTT X36C

6 weeks

5000

ADC081C021CIMMX

MINI SOIC

8

NOPB

1

260

RoHS

N/A

Full production

N/A

1K+

$0.72

reel of 3500

ZXTT X36C

6 weeks

N/A

General Description

The ADC081C021 is a low-power, monolithic, 8-bit, analog-to-digital converter (ADC) that operates from a +2.7 to 5.5V supply. The converter is based on a successive approximation register architecture with an internal track-and-hold circuit that can handle input frequencies up to 11MHz. The ADC081C021 operates from a single supply which also serves as the reference. The device features an I 2C-compatible serial interface that operates in all three speed modes, including high speed mode (3.4MHz).

The ADC's Alert feature provides an interrupt that is activated when the analog input violates a programmable upper or lower limit value. The device features an automatic conversion mode, which frees up the controller and I 2C interface. In this mode, the ADC continuously monitors the analog input for an "out-of-range" condition and provides an interrupt if the measured voltage goes out-of-range.

The ADC081C021 comes in two packages: a small TSOT-6 package with an alert output, and an MSOP-8 package with an alert output and two address selection inputs. The ADC081C027 comes in a small TSOT-6 package with an address selection input. The ADC081C027 provides three pin-selectable addresses while the MSOP-8 version of the ADC081C021 provides nine pin-selectable addresses. Pin-compatible alternatives to the TSOT-6 options are available with additional address options.

Normal power consumption using a +3V or +5V supply is 0.26mW or 0.78mW, respectively. The automatic power-down feature reduces the power consumption to less than 1µW while not converting. Operation over the industrial temperature range of −40°C to +105°C is guaranteed. Their low power consumption and small packages make this family of ADCs an excellent choice for use in battery operated equipment.

The ADC081C021 and ADC081C027 are part of a family of pin-compatible ADCs that also provide 10- and 12-bit resolution. For 10-bit ADCs see the ADC101C021 and ADC101C027. For 12-bit ADCs see the ADC121C021 and ADC121C027.

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