LTC2321-16 - Dual, 16-Bit, 2Msps Differential Input ADC with Wide Input Common Mode Range
Features
- 2Msps Throughput Rate
- ±4LSB INL (Typ)
- Guaranteed 16-Bit, No Missing Codes
- 8VP-P Differential Inputs with Wide Input Common Mode Range
- 81dB SNR (Typ) at fIN = 500kHz
- –90dB THD (Typ) at fIN = 500kHz
- No Cycle Latency
- Guaranteed Operation to 125°C
- Single 3.3V or 5V Supply
- Low Drift (20ppm/°C Max) 2.048V or 4.096V Internal Reference
- 1.8V to 2.5V I/O Voltages
- CMOS or LVDS SPI-Compatible Serial I/O
- Power Dissipation 31mW/Ch (Typ)
- Small 28-Lead (4mm × 5mm) QFN Package
Typical Application
Description
The LTC®2321-16 is a low noise, high speed dual 16- bit successive approximation register (SAR) ADC with differential inputs and wide input common mode range. Operating from a single 3.3V or 5V supply, the LTC2321-16 has an 8VP-P differential input range, making it ideal for applications which require a wide dynamic range with high common mode rejection. The LTC2321-16 achieves ±4LSB INL typical, no missing codes at 16 bits and 81dB SNR.
The LTC2321-16 has an onboard low drift (20ppm/°C max) 2.048V or 4.096V temperature-compensated reference. The LTC2321-16 also has a high speed SPI-compatible serial interface that supports CMOS or LVDS. The fast 2Msps per channel throughput with no cycle latency makes the LTC2321-16 ideally suited for a wide variety of high speed applications. The LTC2321-16 dissipates only 31mW per channel and offers nap and sleep modes to reduce the power consumption to 5μW for further power savings during inactive periods.
| Bits |
|
| LTC2321-12 | 12 |
| LTC2321-14 | 14 |
| LTC2321-16 | 16 |
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 |
|---|---|---|---|---|---|
| LTC2321CUFD-16#PBF | 4x5 QFN-28 | UFD | C | 05-08-1712 | Yes |
| LTC2321CUFD-16#TRPBF | 4x5 QFN-28 | UFD | C | 05-08-1712 | Yes |
| LTC2321HUFD-16#PBF | 4x5 QFN-28 | UFD | H | 05-08-1712 | Yes |
| LTC2321HUFD-16#TRPBF | 4x5 QFN-28 | UFD | H | 05-08-1712 | Yes |
| LTC2321IUFD-16#PBF | 4x5 QFN-28 | UFD | I | 05-08-1712 | Yes |
| LTC2321IUFD-16#TRPBF | 4x5 QFN-28 | UFD | I | 05-08-1712 | 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 | |
|---|---|---|---|---|---|---|
| LTC2321CUFD-16#PBF | 4x5 QFN-28 | C | $14.21 | $9.95 | Yes | |
| LTC2321CUFD-16#TRPBF | 4x5 QFN-28 | C | $14.27 | $10.01 | Yes | |
| LTC2321HUFD-16#PBF | 4x5 QFN-28 | H | $17.86 | $12.50 | Yes | |
| LTC2321HUFD-16#TRPBF | 4x5 QFN-28 | H | $17.92 | $12.56 | Yes | |
| LTC2321IUFD-16#PBF | 4x5 QFN-28 | I | $15.64 | $10.95 | Yes | |
| LTC2321IUFD-16#TRPBF | 4x5 QFN-28 | I | $15.70 | $11.01 | 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 |
|---|---|---|---|
| DC1996A-B | LTC2321-16 Demo Board | Dual, 16-Bit, 2Msps True Differential Input Serial SAR ADC (Req. DC890) | $50.00 | |
| Buy Now | |||
Companion Boards
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC890B | USB Data Acquisition Controller, for PScope Evaluation Kits (up to 250Mbps, CMOS/LVDS) | $300.00 | |
| Buy Now | |||
Applications
- High Speed Data Acquisition Systems
- Communications
- Remote Data Acquisition
- Imaging
- Optical Networking
- Automotive
- Multiphase Motor 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.
