LTC2391-16 - 16-Bit, 250ksps SAR ADC with 94dB SNR
Features
- 250ksps Throughput Rate
- ±2LSB INL (Max)
- Guaranteed 16-Bit No Missing Codes
- 94dB SNR (Typ) at fIN = 20kHz
- Guaranteed Operation to 125°C
- Single 5V Supply
- 1.8V to 5V I/O Voltages
- 95mW Power Dissipation
- ±4.096V Differential Input Range
- Internal Reference (20ppm/°C Max)
- No Pipeline Delay, No Cycle Latency
- Parallel and Serial Interface
- Internal Conversion Clock
- 48-Pin 7mm × 7mm LQFP and QFN Packages
Typical Application
Description
The LTC2391-16 is a low noise, high speed 16-bit successive approximation register (SAR) ADC. Operating from a single 5V supply, the LTC2391-16 supports a large ±4.096V fully differential input range, making it ideal for high performance applications which require maximum dynamic range. The LTC2391-16 achieves ±2LSB INL max, no missing codes at 16-bits and 94dB SNR (typ).
The LTC2391-16 includes a precision internal reference with a guaranteed 0.5% initial accuracy and a ±20ppm/°C (max) temperature coefficient. Fast 250ksps throughput with no cycle latency in both parallel and serial interface modes makes the LTC2391-16 ideally suited for a wide variety of high speed applications. An internal oscillator sets the conversion time, easing external timing considerations. The LTC2391-16 dissipates only 95mW at 250ksps, while both nap and sleep power-down modes are provided to further reduce power during inactive periods.
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 |
|---|---|---|---|---|---|
| LTC2391CLX-16#PBF | 7x7 LQFP-48 | LX | C | 05-08-1760 | Yes |
| LTC2391CUK-16#PBF | 7x7 QFN-48 | UK | C | 05-08-1704 | Yes |
| LTC2391CUK-16#TRPBF | 7x7 QFN-48 | UK | C | 05-08-1704 | Yes |
| LTC2391HLX-16#PBF | 7x7 LQFP-48 | LX | H | 05-08-1760 | Yes |
| LTC2391ILX-16#PBF | 7x7 LQFP-48 | LX | I | 05-08-1760 | Yes |
| LTC2391IUK-16#PBF | 7x7 QFN-48 | UK | I | 05-08-1704 | Yes |
| LTC2391IUK-16#TRPBF | 7x7 QFN-48 | UK | I | 05-08-1704 | 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 | |
|---|---|---|---|---|---|---|
| LTC2391CLX-16#PBF | 7x7 LQFP-48 | C | $11.23 | $7.86 | Yes | |
| LTC2391CUK-16#PBF | 7x7 QFN-48 | C | $11.23 | $7.86 | Yes | |
| LTC2391CUK-16#TRPBF | 7x7 QFN-48 | C | $11.33 | $7.96 | Yes | |
| LTC2391HLX-16#PBF | 7x7 LQFP-48 | H | $15.50 | $10.85 | Yes | |
| LTC2391ILX-16#PBF | 7x7 LQFP-48 | I | $12.91 | $9.04 | Yes | |
| LTC2391IUK-16#PBF | 7x7 QFN-48 | I | $12.91 | $9.04 | Yes | |
| LTC2391IUK-16#TRPBF | 7x7 QFN-48 | I | $13.01 | $9.14 | 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 |
|---|---|---|---|
| DC1500A-C | LTC2391-16 with LT6350 optimized driver, 5V 16-bit 250ksps Int Ref Parallel / Serial SAR ADC in LQFP-48, req DC718 | $150.00 | |
| DC1501A-C | LTC2391-16 with LT1807, 5V 16-bit 250ksps Int Ref Parallel / Serial SAR ADC in LQFP-48, req DC718 | $150.00 | |
| Buy Now | |||
Companion Boards
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC718C | USB Data Acquisition Controller, for PScope Evaluation Kits (<135Mbps) | $300.00 | |
| Buy Now | |||
Applications
- Medical Imaging
- High Speed Data Acquisition
- Digital Signal Processing
- Industrial Process Control
- Instrumentation
- ATE
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Design Tools
LinearLabTools
LinearLabTools is a collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards. An evaluation board for a data converter will typically plug into an accompanying controller board, which is then connected to a host computer running a Linear supplied GUI program such as PScope for Analog-to-Digital converters or LTDACgen for Digital-to-Analog converters. The GUI allows basic performance measurements to be made, but it is not designed to run arbitrary sequences of tests or communicate with other hardware, as is often required by customers when evaluating a part for their own application. LinearLabTools allows customers to control Linear’s data converter demo boards as they would any other piece of test equipment, using their own software.
The LinearLabTools package also contains various application examples, simulations, and educational programs that demonstrate mixed signal concepts.
Click here for more information and to download the software
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.
