LTC1282 - 3V 140ksps 12-Bit Sampling A/D Converter with Reference
Features
- Single Supply 3V or ±3V Operation
- 140ksps Throughput Rate
- 12mW (Typ) Power Dissipation
- On-Chip 25ppm/°C Reference
- Internal Synchronized Clock; No Clock Required
- High Impedance Analog Input
- 69dB S/(N + D) and 77dB THD at Nyquist
- 177;0.5LSB INL and ±0.75LSB DNL Max (A Grade)
- 2.7V Guaranteed Minimum Supply Voltage
- ESD Protected On All Pins
- 24-Pin Narrow PDIP and SW Packages
- 0V to 2.5V or ±1.25V Input Ranges
Typical Application
Description
The LTC™1282 is a 6µs, 140ksps, sampling 12-bit A/D converter that draws only 12mW from a single 3V or dual �3V supply. This easy-to-use device comes complete with 1.14µs sample-and-hold, precision reference and internally trimmed clock. Unipolar and bipolar conversion modes provide flexibility for various applications. They are built with LTBiCMOS� switched capacitor technology. The LTC1282 has a 25ppm/°C (max) internal reference and converts 0V to 2.5V unipolar inputs from a single 3V supply. With �3V supplies its input range is �1.25V with two’s complement output format. Maximum DC specifications include �0.5LSB INL, �0.75LSB DNL and 25ppm/°C full-scale drift over temperature. Outstanding AC performance includes 69dB S/(N + D) and 77dB THD at the Nyquist input frequency of 70kHz. The internal clock is trimmed for 6µs maximum conversion time. The clock automatically synchronizes to each sample command eliminating problems with asynchronous clock noise found in competitive devices. A high speed parallel interface eases connections to FIFOs, DSPs and microprocessors.
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 |
|---|---|---|---|---|---|
| LTC1282ACN#PBF | N-24 | N | C | 05-08-1510 (N24) | Yes |
| LTC1282ACSW#PBF | SW-24 | SW | C | 05-08-1620 (SW24) | Yes |
| LTC1282ACSW#TRPBF | SW-24 | SW | C | 05-08-1620 (SW24) | Yes |
| LTC1282BCN#PBF | N-24 | N | C | 05-08-1510 (N24) | Yes |
| LTC1282BCSW#PBF | SW-24 | SW | C | 05-08-1620 (SW24) | Yes |
| LTC1282BCSW#TRPBF | SW-24 | SW | C | 05-08-1620 (SW24) | 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 | |
|---|---|---|---|---|---|---|
| LTC1282ACN#PBF | N-24 | C | $21.90 | $17.30 | Yes | |
| LTC1282ACSW#PBF | SW-24 | C | $23.15 | $18.05 | Yes | |
| LTC1282ACSW#TRPBF | SW-24 | C | $18.15 | Yes | ||
| LTC1282BCN#PBF | N-24 | C | $17.50 | $13.80 | Yes | |
| LTC1282BCSW#PBF | SW-24 | C | $18.75 | $14.60 | Yes | |
| LTC1282BCSW#TRPBF | SW-24 | C | $14.70 | 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.Click here to view our complete list of demo boards
Applications
- 3V to 2.5V or ±1.25V Input Ranges
- High Speed Data Acquisition
- Digital Signal Processing
- Multiplexed Data Acquisition Systems
- Audio and Telecom Processing
- Spectrum Analysis
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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.
