Data Conversion Analog-to-Digital Converters (ADC) Precision ADCs (Fs < 10Msps)

LTM2883 - SPI/Digital or I2C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power
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LTC1408-12 - 6 Channel, 12-Bit, 600ksps Simultaneous Sampling ADC with Shutdown

Features

  • 600ksps ADC with 6 Simultaneously Sampled Differential Inputs
  • 100ksps Throughput per Channel
  • 72dB SINAD
  • Low Power Dissipation: 15mW
  • 3V Single Supply Operation
  • 2.5V Internal Bandgap Reference, Can be Overdriven with External Reference
  • 3-Wire SPI-Compatible Serial Interface
  • 0V to 2.5V Unipolar, or ±1.25V Bipolar Differential Input Range
  • SLEEP (6µW) Shutdown Mode
  • NAP (3.3mW) Shutdown Mode
  • Internal Conversion Triggered by CONV
  • 83dB Common Mode Rejection
  • Tiny 32-Pin (5mm × 5mm) QFN Package

Typical Application

LTC1408-12 Typical Application

Description

The LTC1408-12 is a 12-bit, 600ksps ADC with six simultaneously sampled differential inputs. The device draws only 5mA from a single 3V supply, and comes in a tiny 32 pin (5mm × 5mm) QFN package. A SLEEP shutdown feature further reduces power consumption to 6µW. The combination of low power and tiny package makes the LTC1408-12 suitable for portable applications.

The LTC1408-12 contains six separate differential inputs that are sampled simultaneously on the rising edge of the CONV signal. These six sampled inputs are then converted at a rate of 100ksps per channel.

The 83dB common mode rejection allows users to eliminate ground loops and common mode noise by measuring signals differentially from the source.

The device converts 0V to 2.5V unipolar inputs differentially, or ±1.25V bipolar inputs also differentially, depending on the state of the BIP pin. Any analog input may swing rail-to-rail as long as the differential input range is maintained.

The conversion sequence can be abbreviated to convert fewer than six channels, depending on the logic state of the SEL2, SEL1 and SEL0 inputs.

The serial interface sends out the six conversion results in 96 clocks for compatibility with standard serial interfaces.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing		 RoHS
LTC1408CUH-12#PBF 5x5 QFN-32 UH C 05-08-1693 Yes
LTC1408CUH-12#TRPBF 5x5 QFN-32 UH C 05-08-1693 Yes
LTC1408IUH-12#PBF 5x5 QFN-32 UH I 05-08-1693 Yes
LTC1408IUH-12#TRPBF 5x5 QFN-32 UH I 05-08-1693 Yes


LTC1408-12 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)		 Price
(1k)*		 RoHS
LTC1408CUH-12#PBF 5x5 QFN-32 C $8.27 $5.65 Yes
LTC1408CUH-12#TRPBF 5x5 QFN-32 C $5.71 Yes
LTC1408IUH-12#PBF 5x5 QFN-32 I $9.93 $6.78 Yes
LTC1408IUH-12#TRPBF 5x5 QFN-32 I $6.84 Yes
Buy Now • Request Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards

Applications

  • Multiphase Power Measurement
  • Multiphase Motor Control
  • Data Acquisition Systems
  • Uninterruptable Power Supplies

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Design Tools

Linear Technology provides a variety of custom design simulation tools and device models to allow even novice designers to quickly and easily evaluate circuits using high performance switching regulators, amplifiers, data converters, filters and more. Please visit our Design Tools page to view and download:

  • LTspice - A powerful SPICE simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators
  • LTpowerCAD - A complete power supply selection, synthesis and design tool
  • LTpowerPlay - A development environment supporting Linear Technology's Digital Power System Management (PSM) products
  • PScope & QuikEval - USB-based product demonstration and data acquisition system for use with our ADCs, DACs, and more
  • Linduino - Arduino compatible system for developing and distributing firmware libraries and example code
  • LinearLab Tools - A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards
  • And More!

Technical Support