Product details

Resolution (Bits) 12 Number of input channels 8 Sample rate (Max) (kSPS) 0.082 Interface type I2C Architecture Delta-Sigma Input type Pseudo-Differential, Single-Ended Multi-channel configuration Multiplexed Rating Catalog Reference mode Ext, Int Input range (Max) (V) 5.5 Input range (Min) (V) 0 Features Oscillator, Temp Sensor Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 2 Analog voltage AVDD (Min) (V) 3 Analog voltage AVDD (Max) (V) 5.5 INL (Max) (+/-LSB) 1 Digital supply (Min) (V) 3 Digital supply (Max) (V) 5.5
Resolution (Bits) 12 Number of input channels 8 Sample rate (Max) (kSPS) 0.082 Interface type I2C Architecture Delta-Sigma Input type Pseudo-Differential, Single-Ended Multi-channel configuration Multiplexed Rating Catalog Reference mode Ext, Int Input range (Max) (V) 5.5 Input range (Min) (V) 0 Features Oscillator, Temp Sensor Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 2 Analog voltage AVDD (Min) (V) 3 Analog voltage AVDD (Max) (V) 5.5 INL (Max) (+/-LSB) 1 Digital supply (Min) (V) 3 Digital supply (Max) (V) 5.5
TSSOP (PW) 16 22 mm² 5 x 4.4
  • 12-Bit Resolution Delta-Sigma ADC
  • Local Temperature Sensing
  • Configurable Single-Ended and/or Pseudo-Diff.
    Inputs
  • 2.56-V Internal VREF or Variable External VREF
  • WATCHDOG Window Comparators with Status
    and Mask Registers of All Measured Values
  • Independent Registers for Storing Measured
    Values
  • INT Output Notifies Microprocessor of Error Event
  • I2C Serial Bus Interface Compatibility
  • 9 Selectable Addresses
  • TIME-OUT Reset Function to Prevent I2C Bus
    Lock-Up
  • Individual Channel Shutdown to Limit Power
    Consumption
  • Deep Shutdown Mode to Minimize Power
    Consumption
  • TSSOP 16-Lead Package
  • Key Specifications
    • ADC Resolution 12-Bit
    • Supply Voltage Range 3 V to 5.5 V
    • Total Unadjusted Error –0.45%/+0.2%
    • Integral Non-Linearity ±1 LSb
    • Differential Non-Linearity ±1 LSb
    • Operating Current 0.56 mA
    • Deep Shutdown Current 10 ±A
    • Temperature Resolution °C/LSb
    • Temperature Accuracy (–40°C to 125°C) ±3°C
    • Temperature Accuracy (–25°C to 100°C) ±2°C
  • 12-Bit Resolution Delta-Sigma ADC
  • Local Temperature Sensing
  • Configurable Single-Ended and/or Pseudo-Diff.
    Inputs
  • 2.56-V Internal VREF or Variable External VREF
  • WATCHDOG Window Comparators with Status
    and Mask Registers of All Measured Values
  • Independent Registers for Storing Measured
    Values
  • INT Output Notifies Microprocessor of Error Event
  • I2C Serial Bus Interface Compatibility
  • 9 Selectable Addresses
  • TIME-OUT Reset Function to Prevent I2C Bus
    Lock-Up
  • Individual Channel Shutdown to Limit Power
    Consumption
  • Deep Shutdown Mode to Minimize Power
    Consumption
  • TSSOP 16-Lead Package
  • Key Specifications
    • ADC Resolution 12-Bit
    • Supply Voltage Range 3 V to 5.5 V
    • Total Unadjusted Error –0.45%/+0.2%
    • Integral Non-Linearity ±1 LSb
    • Differential Non-Linearity ±1 LSb
    • Operating Current 0.56 mA
    • Deep Shutdown Current 10 ±A
    • Temperature Resolution °C/LSb
    • Temperature Accuracy (–40°C to 125°C) ±3°C
    • Temperature Accuracy (–25°C to 100°C) ±2°C

The ADC128D818 I2C system monitor is designed for maximum flexibility. The system monitor can be configured for single-ended and/or pseudo-differential inputs. An onboard temperature sensor, combined with WATCHDOG window comparators, and an interrupt output pin, INT, allow easy monitoring and out-of-range alarms for every channel. A high performance internal reference is also available to provide for a complete solution in the most difficult operating conditions.

The ADC128D818’s 12-bit delta-sigma ADC supports Standard Mode (Sm, 100 kbps) and Fast Mode (Fm, 400 kbps) I2C interfaces. The ADC128D818 includes a sequencer to control channel conversions and stores all converted results in independent registers for easy microprocessor retrieval. Unused channels can be shut down independently to conserve power.

The ADC can use either an internal 2.56-V reference or a variable external reference. An analog filter is included on the I2C digital control lines to provide improved noise immunity. The device also includes a TIME-OUT reset function on SDA and SCL to prevent I2C bus lock-up.

The ADC128D818 operates from 3-V to 5.5-V power supply voltage range, –40°C to 125°C temperature range, and the device is available in a 16-pin TSSOP package.

The ADC128D818 I2C system monitor is designed for maximum flexibility. The system monitor can be configured for single-ended and/or pseudo-differential inputs. An onboard temperature sensor, combined with WATCHDOG window comparators, and an interrupt output pin, INT, allow easy monitoring and out-of-range alarms for every channel. A high performance internal reference is also available to provide for a complete solution in the most difficult operating conditions.

The ADC128D818’s 12-bit delta-sigma ADC supports Standard Mode (Sm, 100 kbps) and Fast Mode (Fm, 400 kbps) I2C interfaces. The ADC128D818 includes a sequencer to control channel conversions and stores all converted results in independent registers for easy microprocessor retrieval. Unused channels can be shut down independently to conserve power.

The ADC can use either an internal 2.56-V reference or a variable external reference. An analog filter is included on the I2C digital control lines to provide improved noise immunity. The device also includes a TIME-OUT reset function on SDA and SCL to prevent I2C bus lock-up.

The ADC128D818 operates from 3-V to 5.5-V 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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Technical documentation

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Type Title Date
* Data sheet ADC128D818 12-Bit, 8-Channel, ADC System Monitor With Temperature Sensor, Internal – External Reference, and I2C Interface datasheet (Rev. F) PDF | HTML 31 Aug 2015
Application note A Basic Guide to I2C PDF | HTML 08 Nov 2022
Application note Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs PDF | HTML 23 Mar 2022
E-book Fundamentals of Precision ADC Noise Analysis 19 Jun 2020
Application note Digital Filter Types in Delta-Sigma ADCs PDF | HTML 27 Jun 2017
E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 19 Mar 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Driver or library

ADC128D818SW-LINUX — Linux Driver for ADC128D818

The Linux driver supports the ADC128D818 System Monitor. The Linux driver supports communication through the I2C bus and interfaces with the Hardware Monitoring sub-system.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

  • adc128d818

 

Linux (...)

Driver or library

SENSOREVAL — Eval Board Software For Hardware Monitors And Digital Temperature Sensors

SensorEval
SensorEval software supports the latest TI temperature sensor and hardware monitor evaluation boards via USB interface. It also allows access to sensors mounted directly on motherboards that support Intel chip sets.

  • Download SensorEval Software and Manual
  • Windows XP support is offered for (...)
Simulation model

ADC128D818 IBIS Model

SNAM220.ZIP (180 KB) - IBIS Model
Calculation tool

ADC-INPUT-CALC — Analog-to-digital converter (ADC) input driver design tool supporting multiple input types

ADC-INPUT-CALC is an online tool that provides support for designing the input buffer to an analog-to-digital converter (ADC). It offers 24 different op-amp based buffer circuits that can be used to drive an ADC input. The available topologies cover differential, single-ended and (...)
Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
Package Pins Download
TSSOP (PW) 16 View options

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