adc101c027cimkx National Semiconductor Corporation, adc101c027cimkx Datasheet

adc101c027cimkx

Manufacturer Part Number

adc101c027cimkx

Description

I2c-compatible, 12-bit Analog-to-digital Converter Adc With Alert Function

Manufacturer

National Semiconductor Corporation

Datasheet

1.ADC101C027CIMKX.pdf (32 pages)

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ADC101C021/ADC101C027

with Alert Function

General Description

The ADC101C021 is a low-power, monolithic, 10-bit,

analog-to-digital converter(ADC) that operates from a +2.7 to

5.5V supply. The converter is based on a successive approx-

imation register architecture with an internal track-and-hold

circuit that can handle input frequencies up to 11MHz. The

ADC101C021 operates from a single supply which also

serves

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 low-

er limit value. The device features an automatic conversion

mode, which frees up the controller and I

mode, the ADC continuously monitors the analog input for an

"out-of-range" condition and provides an interrupt if the mea-

sured voltage goes out-of-range.

The ADC101C021 comes in a small TSOT-6 package with an

alert output. The ADC101C027 comes in a small TSOT-6

package with an address selection input. The ADC101C027

provides three pin-selectable addresses. Pin-compatible al-

ternatives 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 tem-

perature 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 equip-

ment.

The ADC101C021 and ADC101C027 are part of a family of

pin-compatible ADCs that also provide 12 and 8 bit resolution.

For 12-bit ADCs see the ADC121C021 and ADC121C027.

For 8-bit ADCs see the ADC081C021 and ADC081C027.

Connection Diagrams

I2C® is a registered trademark of Phillips Corporation.

C-compatible serial interface that operates in all three speed

C-Compatible, 10-Bit Analog-to-Digital Converter (ADC)

the

reference.

The

device

300520

C interface. In this

30052001

features

Features

■

Key Specifications

■

Applications

■

Pin-Compatible Alternatives

All devices are fully pin and function compatible.

Resolution

(100kHz), fast (400kHz), and high speed (3.4MHz) modes

Extended power supply range (+2.7V to +5.5V)

Up to four pin-selectable chip addresses

Out-of-range Alert Function

Automatic Power-down mode while not converting

Very small 6-pin TSOT packages

±8kV HBM ESD protection (SDA, SCL)

Resolution

Conversion Time

INL & DNL

Throughput Rate

Power Consumption (at 22kSPS)

— 3V Supply

— 5V Supply

System Monitoring

Peak Detection

Portable Instruments

Medical Instruments

Test Equipment

12-bit

10-bit

C-Compatible 2-wire Interface which supports standard

8-bit

ALERT Output

ADC121C021

ADC101C021

ADC081C021

10 bits; no missing codes

ADC101C027

ADC121C027

ADC081C027

30052002

ADDR Input

188.9kSPS (max)

±0.5 LSB (max)

0.26 mW (typ)

0.78 mW (typ)

www.national.com

May 5, 2008

1µs (typ)

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