LTC2439-1 - 8-/16-Channel 16-Bit No Latency Delta Sigma ADC
Features
- 16-Channel Single-Ended or 8-Channel Differential Inputs
- Low Supply Current (200µA, 4µA in Autosleep)
- Rail-to-Rail Differential Input/Reference
- 16-Bit No Missing Codes
- 1µV RMS Noise, 16-ENOBS Independent of VREF
- Very Low Transition Noise: Less Than 0.02LSB
- Operates with a Reference as Low as 100mV with 1.5µV LSB Step Size
- Guaranteed Modulator Stability and Lock-Up Immunity for Any Input and Reference Conditions
- Single Supply 2.7V to 5.5V Operation
- Internal Oscillator—No External Components Required
- 87dB Min, 50Hz and 60Hz Simultaneous Notch Filter
- Pin Compatible with the 24-Bit LTC2418
- 28-Lead SSOP Package
Typical Application
Description
The LTC2439-1 is a 16-channel (8-differential) micropower 16-bit Delta Sigma analog-to-digital converter. It operates from 2.7V to 5.5V and includes an integrated oscillator, 0.12LSB INL and 1µV RMS noise. It uses deltasigma technology and provides single cycle settling time for multiplexed applications. Through a single pin, the LTC2439-1 can be configured for better than 87dB differential mode rejection at 50Hz and 60Hz ±2%, or it can be driven by an external oscillator for a user-defined rejection frequency. The internal oscillator requires no external frequency setting components.
The LTC2439-1 accepts any external differential reference voltage from 0.1V to VCC for flexible ratiometric and remote sensing measurement applications. It can be configured to take 8 differential channels or 16 single-ended channels. The full-scale bipolar input range is from – 0.5VREF to 0.5VREF. The reference common mode voltage, VREFCM, and the input common mode voltage, VINCM, may be independently set between GND and VCC. The DC common mode input rejection is better than 140dB.
The LTC2439-1 communicates through a flexible 4-wire digital interface that is compatible with SPI and MICROWIRE™ protocols.
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 |
|---|---|---|---|---|---|
| LTC2439-1CGN#PBF | SSOP-28 | GN | C | 05-08-1641 (GN28) | Yes |
| LTC2439-1CGN#TRPBF | SSOP-28 | GN | C | 05-08-1641 (GN28) | Yes |
| LTC2439-1IGN#PBF | SSOP-28 | GN | I | 05-08-1641 (GN28) | Yes |
| LTC2439-1IGN#TRPBF | SSOP-28 | GN | I | 05-08-1641 (GN28) | Yes |
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 | |
|---|---|---|---|---|---|---|
| LTC2439-1CGN#PBF | SSOP-28 | C | $5.00 | $3.75 | Yes | |
| LTC2439-1CGN#TRPBF | SSOP-28 | C | $3.85 | Yes | ||
| LTC2439-1IGN#PBF | SSOP-28 | I | $5.45 | $4.10 | Yes | |
| LTC2439-1IGN#TRPBF | SSOP-28 | I | $4.20 | Yes | ||
| Buy Now • Request Samples | ||||||
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.| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC790A | LTC2439CGN-1 | 8-Channel Differential 16-Bit ADC (req DC590) | $50.00 | |
| DC907A-B | LTC6102, LT6100, LT1787, LTC2054, and LTC2439-1 (Requires DC590B) | Demo Board | $150.00 | |
| Buy Now | |||
Companion Boards
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC590B | Isolated USB Serial Controller for Linear Technology QuikEval-Compatible Demo Boards | $50.00 | |
| Buy Now | |||
Applications
- Direct Sensor Digitizer
- Weight Scales
- Direct Temperature Measurement
- Gas Analyzers
- Strain Gauge Transducers
- Instrumentation
- Data Acquisition
- Industrial Process Control
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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
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
