LTC2440
Info: : PRODUCTION
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LTC2440

24-Bit High Speed Differential ∆∑ ADC with Selectable Speed/Resolution

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $7.52
Features
  • Up to 3.5kHz Output Rate
  • Selectable Speed/Resolution
  • 2µVRMS Noise at 880Hz Output Rate
  • 200nVRMS Noise at 6.9Hz Output Rate with Simultaneous 50/60Hz Rejection
  • 0.0005% INL, No Missing Codes
  • Autosleep Enables 20µA Operation at 6.9Hz
  • < 5µV Offset (4.5V < VCC < 5.5V, –40°C to 85°C)
  • Differential Input and Differential Reference with GND to VCC Common Mode Range
  • No Latency, Each Conversion is Accurate Even After an Input Step
  • Internal Oscillator—No External Components
  • Pin Compatible with the LTC2410
  • 24-Bit ADC in Narrow 16-Lead SSOP Package
Additional Details
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The LTC2440 is a high speed 24-bit No Latency ∆∑ ADC with 5ppm INL and 5µV offset. It uses proprietary Delta Sigma architecture enabling variable speed and resolution with no latency. Ten speed/resolution combinations (6.9Hz/ 200nVRMS to 3.5kHz/25µVRMS) are programmed through a simple serial interface. Alternatively, by tying a single pin HIGH or LOW, a fast (880Hz/2µVRMS) or ultralow noise (6.9Hz, 200nVRMS, 50/60Hz rejection) speed/resolution combination can be easily selected. The accuracy (offset, full-scale, linearity, drift) and power dissipation are independent of the speed selected. Since there is no latency, a speed/resolution change may be made between conversions with no degradation in performance.

Following each conversion cycle, the LTC2440 automatically enters a low power sleep state. Power dissipation may be reduced by increasing the duration of this sleep state. For example, running at the 3.5kHz conversion speed but reading data at a 100Hz rate draws 240µA average current (1.1mW) while reading data at a 7Hz output rate draws only 25µA (125µW).The LTC2440 communicates through a flexible 3-wire or 4-wire digital interface that is compatible with the LTC2410 and is available in a narrow 16-lead SSOP package.

Applications

  • High Speed Multiplexing
  • Weight Scales
  • Auto Ranging 6-Digit DVMs
  • Direct Temperature Measurement
  • High Speed Data Acquisition
Part Models 4
1ku List Price Starting From $7.52

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC2440CGN#PBF
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LTC2440CGN#TRPBF
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LTC2440IGN#PBF
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Product Lifecycle

PCN

Oct 11, 2022

- 22_0235

Epoxy Change from Henkel 8290 to 8290A for GN Package

LTC2440CGN#PBF

PRODUCTION

LTC2440CGN#TRPBF

PRODUCTION

LTC2440IGN#PBF

PRODUCTION

LTC2440IGN#TRPBF

PRODUCTION

Apr 6, 2022

- 22_0066

Laser Top Mark for 16QSOP Assembled in ADPG [PNG]

LTC2440CGN#PBF

PRODUCTION

LTC2440CGN#TRPBF

PRODUCTION

LTC2440IGN#PBF

PRODUCTION

LTC2440IGN#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0235

arrow down

Epoxy Change from Henkel 8290 to 8290A for GN Package

LTC2440CGN#PBF

PRODUCTION

LTC2440CGN#TRPBF

PRODUCTION

LTC2440IGN#PBF

PRODUCTION

LTC2440IGN#TRPBF

PRODUCTION

Apr 6, 2022

- 22_0066

arrow down

Laser Top Mark for 16QSOP Assembled in ADPG [PNG]

LTC2440CGN#PBF

PRODUCTION

LTC2440CGN#TRPBF

PRODUCTION

LTC2440IGN#PBF

PRODUCTION

LTC2440IGN#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

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DC570A

LTC2440CGN Demo Board | High Speed Delta Sigma ADC, (Requires DC2026)

Tools & Simulations

Tools & Simulations 1

Linduino

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

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