Product details

Resolution (Bits) 16 Number of input channels 8 Sample rate (Max) (kSPS) 100 Interface type SPI Architecture SAR Input type Differential Multi-channel configuration Multiplexed Rating Catalog Reference mode Ext Input range (Max) (V) 2.6 Input range (Min) (V) 0 Features Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 3.2 Analog voltage AVDD (Min) (V) 2.7 SNR (dB) 85.5 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 6 Digital supply (Min) (V) 2.7 Digital supply (Max) (V) 5.25
Resolution (Bits) 16 Number of input channels 8 Sample rate (Max) (kSPS) 100 Interface type SPI Architecture SAR Input type Differential Multi-channel configuration Multiplexed Rating Catalog Reference mode Ext Input range (Max) (V) 2.6 Input range (Min) (V) 0 Features Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 3.2 Analog voltage AVDD (Min) (V) 2.7 SNR (dB) 85.5 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 6 Digital supply (Min) (V) 2.7 Digital supply (Max) (V) 5.25
SSOP (DB) 20 SSOP (DBQ) 20 52 mm² 8.65 x 6
  • BIPOLAR INPUT RANGE
  • PIN-FOR-PIN COMPATIBLE WITH THE ADS7844 AND ADS8344
  • SINGLE SUPPLY: 2.7V to 5V
  • 8-CHANNEL SINGLE-ENDED OR 4-CHANNEL DIFFERENTIAL INPUT
  • UP TO 100kHz CONVERSION RATE
  • 85dB SINAD
  • SERIAL INTERFACE
  • QSOP-20 AND SSOP-20 PACKAGES
  • APPLICATIONS
    • DATA ACQUISITION
    • TEST AND MEASUREMENT EQUIPMENT
    • INDUSTRIAL PROCESS CONTROL
    • PERSONAL DIGITAL ASSISTANTS
    • BATTERY-POWERED SYSTEMS

  • BIPOLAR INPUT RANGE
  • PIN-FOR-PIN COMPATIBLE WITH THE ADS7844 AND ADS8344
  • SINGLE SUPPLY: 2.7V to 5V
  • 8-CHANNEL SINGLE-ENDED OR 4-CHANNEL DIFFERENTIAL INPUT
  • UP TO 100kHz CONVERSION RATE
  • 85dB SINAD
  • SERIAL INTERFACE
  • QSOP-20 AND SSOP-20 PACKAGES
  • APPLICATIONS
    • DATA ACQUISITION
    • TEST AND MEASUREMENT EQUIPMENT
    • INDUSTRIAL PROCESS CONTROL
    • PERSONAL DIGITAL ASSISTANTS
    • BATTERY-POWERED SYSTEMS

The ADS8345 is an 8-channel, 16-bit, sampling Analog-to-Digital (A/D) converter with a synchronous serial interface. Typical power dissipation is 8mW at a 100kHz throughput rate and a +5V supply. The reference voltage (VREF) can be varied between 500mV and VCC/2, providing a corresponding input voltage range of ±VREF. The device includes a shutdown mode which reduces power dissipation to under 15µW. The ADS8345 is ensured down to 2.7V operation.

Low-power, high-speed, and an onboard multiplexer make the ADS8345 ideal for battery-operated systems such as personal digital assistants, portable multi-channel data loggers, and measurement equipment. The serial interface also provides low-cost isolation for remote data acquisition. The ADS8345 is available in a QSOP-20 or SSOP-20 package and is ensured over the –40°C to +85°C temperature range.

The ADS8345 is an 8-channel, 16-bit, sampling Analog-to-Digital (A/D) converter with a synchronous serial interface. Typical power dissipation is 8mW at a 100kHz throughput rate and a +5V supply. The reference voltage (VREF) can be varied between 500mV and VCC/2, providing a corresponding input voltage range of ±VREF. The device includes a shutdown mode which reduces power dissipation to under 15µW. The ADS8345 is ensured down to 2.7V operation.

Low-power, high-speed, and an onboard multiplexer make the ADS8345 ideal for battery-operated systems such as personal digital assistants, portable multi-channel data loggers, and measurement equipment. The serial interface also provides low-cost isolation for remote data acquisition. The ADS8345 is available in a QSOP-20 or SSOP-20 package and is ensured over the –40°C to +85°C temperature range.

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Technical documentation

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Type Title Date
* Data sheet ADS8345: 16-Bit, 8-Channel Serial Output Sampling Analog-to-Digital Converter datasheet (Rev. C) 15 Apr 2003
Technical article How smart AFEs offer an integrated analog solution for thermoelectric cooling control 04 Jan 2022
White paper Voltage-reference impact on total harmonic distortion 01 Aug 2016
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs 21 May 2015
Application note Determining Minimum Acquisition Times for SAR ADCs, part 2 17 Mar 2011
Application note Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) 10 Nov 2010
User guide ADS8344/45EVM 26 Jul 2007
Application note Interfacing the ADS8345 to TMS320C5416 DSP 05 Dec 2002
User guide ADS8345EVM User's Guide 05 Aug 2002

Design & development

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

Evaluation board

ADS8345EVM — ADS8345 Evaluation Module

The ADS8345EVM is an 8-channel, 16-bit analog-to-digital converter board based on the ADS8345 ADC. Typical power dissipation is 8mW at 100kHz throughput rate and a 5V supply. The device uses a synchronous serial interface which is buffered on the EVM.

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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 (...)
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 (...)
Calculation tool

JITTER-SNR-CALC — Jitter and SNR Calculator for ADCs

JITTER-SNR-CALC can be used for calculating theoretical Signal to Noise (SNR) performance of ADCs based on input frequency and clock jitter.
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