LTC1291 - Single Chip 12-Bit Data Acquisition System
Features
- Built-In Sample-and-Hold
- Single Supply 5V Operation
- Power Shutdown
- Direct 3- or 4-Wire Interface to Most MPU Serial Ports and All MPU Parallel Ports
- Two-Channel Analog Multiplexer
- Analog Inputs Common Mode to Supply Rails
- 8-Pin DIP Package
Typical Application
Description
The LTC®1291 is a data acquisition system that contains a serial I/O successive approximation A/D converter. It uses LTCMOS™ switched capacitor technology to perform a 12-bit unipolar A/D conversion. The input multiplexer can be configured for either single-ended or differential inputs. An on-chip sample-and-hold is included on the “+” input. When the LTC1291 is idle, it can be powered down in applications where low power consumption is desired. An external reference is not required because the LTC1291 takes its reference from the power supply (VCC). All these features are packaged in an 8-pin DIP.
The serial I/O is designed to communicate without external hardware to most MPU serial ports and all MPU parallel I/O ports allowing data to be transmitted over three or four wires. Given the accuracy, ease of use and small package size, this device is well suited for digitizing analog signals in remote applications where minimum number of interconnects, small physical size, and low power consumption are important.
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 |
|---|---|---|---|---|---|
| LTC1291BCN8#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |
| LTC1291CCN8#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |
| LTC1291DCN8#PBF | N-8 | N | C | 05-08-1510 (N8) | 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 | |
|---|---|---|---|---|---|---|
| LTC1291BCN8#PBF | N-8 | C | $23.50 | $18.55 | Yes | |
| LTC1291CCN8#PBF | N-8 | C | $18.75 | $14.80 | Yes | |
| LTC1291DCN8#PBF | N-8 | C | $12.10 | $9.40 | 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
- Resolution: 12 Bits
- Fast Conversion Time: 12µs Max Over Temp.
- Low Supply Current:
6.0mA (Typ) Active Mode
10µA (Max) Shutdown Mode
People Who Viewed This Product Also Viewed
- LT3080 - Adjustable 1.1A Single Resistor Low Dropout Regulator
- LTC1298 - Micropower Sampling 12-Bit A/D Converters In S0-8 Packages
- LT5400 - Quad Matched Resistor Network
- LTC1861 - µPower, 12-Bit, 250ksps 1- and 2-Channel ADCs in MSOP
- LT4320/LT4320-1 - Ideal Diode Bridge Controller
- LT1167 - Single Resistor Gain Programmable, Precision Instrumentation Amplifier
- LT3081 - 1.5A Single Resistor Rugged Linear Regulator with Monitors
- LTC2991 - Octal I2C Voltage, Current, and Temperature Monitor
- LTC1865 - µPower, 16-Bit, 250ksps 1- and 2-Channel ADCs in MSOP
- LTC6655 - 0.25ppm Noise, Low Drift Precision References
Product Notifications
Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.
Forgot your password? Click here.
Need help? Email mylinear@linear.com with questions and comments.
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.
