ADC128D818

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SNAS483E – FEBRUARY 2010 – REVISED MARCH 2013

ADC128D818 12-Bit, 8-Channel, ADC System Monitor with Temperature Sensor,

Check for Samples: ADC128D818

1

FEATURES

KEY SPECIFICATIONS

2

•

12-bit Resolution Delta-Sigma ADC

•

ADC Resolution 12-bit

•

Local Temperature Sensing

•

Supply Voltage Range +3 to +5.5 V

•

Configurable Single-Ended and/or Pseudo-Diff.

•

Total Unadjusted Error –0.45%/+0.2%

Inputs

•

Integral Non-Linearity ±1 LSb

•

+2.56V Internal VREF or Variable External

•

Differential Non-Linearity ±1 LSb

VREF

•

Operating Current 0.56 mA

•

WATCHDOG Window Comparators with Status

•

Deep Shutdown Current 10 µA

and Mask Registers of All Measured Values

•

Temperature Resolution °C/LSb

•

Independent Registers for Storing Measured

•

Temp. Accuracy (–40°C to 125°C) ±3°C

Values

•

Temp. Accuracy (–25°C to 100°C) ±2°C

•

INT Output Notifies Microprocessor of Error

Event

DESCRIPTION

•

•

9 Selectable Addresses

maximum flexibility. The system monitor can be

configured for single-ended and/or pseudo-differential

•

inputs. An on-board temperature sensor, combined

Lock-Up

with WATCHDOG window comparators, and an

•

Individual Channel Shutdown to Limit Power

interrupt output pin, INT, allow easy monitoring and

Consumption

out-of-range

alarms

for

every

channel.

A

high

•

Deep Shutdown Mode to Minimize Power

performance internal reference is also available to

Consumption

provide for a complete solution in the most difficult

operating conditions.

•

TSSOP 16-Lead Package

The ADC128D818’s 12-bit delta-sigma ADC supports

APPLICATIONS

Standard Mode (Sm, 100 kbits/s) and Fast Mode

•

Communications Infrastructure

includes a sequencer to control channel conversions

•

Thermal / Hardware Server Monitors

and stores all converted results in independent

•

System Monitors

registers for easy microprocessor retrieval. Unused

channels

can

be

shut

down

independently

to

•

Industrial and Medical Systems

conserve power.

•

Electronic Test Equipment and

The ADC can use either an internal 2.56V reference

Instrumentation

or a variable external reference. An analog filter is

•

Power Supply Monitoring / Supervision

improved noise immunity. The device also includes a

TIMEOUT reset function on SDA and SCL to prevent

The ADC128D818 operates from +3.0 to +5.5V

power

supply

voltage

range,

–40°C

to

125°C

temperature range, and the device is available in a

16-pin TSSOP package.

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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

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PRODUCTION DATA information is current as of publication date.

Copyright © 2010–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.