DocumentationDatasheet
Application Note
Design Note
- DN22 - New 12-Bit Data Acquisition Systems Communicate with Microprocessors Over 4 Wires
- DN35 - 12-Bit 8-Channel Data Acquisition System Interfaces to IBM PC Serial Port
- DN45 - Signal Conditioning for Platinum Temperature Transducers
- DN51 - Gain Trimming In Instrumentation Amplifier Based Systems
Reliability Data
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Features
- Software Programmable Features
-Unipolar/Bipolar Conversion
-Four Differential/Eight Single Ended Inputs
-MSB or LSB First Data Sequence
-Variable Data Word Length
-Power Shutdown - Built-In Sample-and-Hold
- Single Supply 5V or ±5V Operation
- Direct Four Wire Interface to Most MPU Serial Ports and All MPU Parallel Ports
- 50kHz Maximum Throughput Rate
- Available in 20-Lead PDIP and SO Wide Packages
Typical Application
Description
The LTC®1290 is a data acquisition component which contains a serial I/O successive approximation A/D converter. It uses LTCMOS™ switched capacitor technology to perform either 12-bit unipolar or 11-bit plus sign bipolar A/D conversions. The 8-channel input multiplexer can be configured for either single-ended or differential inputs (or combinations thereof). An on-chip sample-and-hold is included for all single-ended input channels. When the LTC1290 is idle it can be powered down with a serial word in applications where low power consumption is desired.
The serial I/O is designed to be compatible with industry standard full duplex serial interfaces. It allows either MSB- or LSB-first data and automatically provides 2's complement output coding in the bipolar mode. The output data word can be programmed for a length of 8, 12 or 16 bits. This allows easy interface to shift registers and a variety of processors.
N-20,SW-20,CERDIP-20
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC1290BCN#PBF | PDIP | 20 | C | $25.00 | $19.75 |
| LTC1290BCSW#PBF | SO | 20 | C | $30.00 | $23.70 |
| LTC1290BCSW#TRPBF | SO | 20 | C | $23.80 | |
| LTC1290BIN#PBF | PDIP | 20 | I | $34.75 | $28.20 |
| LTC1290BISW#PBF | SO | 20 | I | $34.75 | $28.20 |
| LTC1290BISW#TRPBF | SO | 20 | I | $28.30 | |
| LTC1290CCN#PBF | PDIP | 20 | C | $20.00 | $15.80 |
| LTC1290CCSW#PBF | SO | 20 | C | $24.00 | $18.95 |
| LTC1290CCSW#TRPBF | SO | 20 | C | $19.05 | |
| LTC1290CIN#PBF | PDIP | 20 | I | $28.25 | $22.60 |
| LTC1290CISW#PBF | SO | 20 | I | $28.25 | $22.60 |
| LTC1290CISW#TRPBF | SO | 20 | I | $22.70 | |
| LTC1290DCN#PBF | PDIP | 20 | C | $8.35 | $6.60 |
| LTC1290DCSW#PBF | SO | 20 | C | $14.50 | $11.15 |
| LTC1290DCSW#TRPBF | SO | 20 | C | $11.25 | |
| LTC1290DIN#PBF | PDIP | 20 | I | $23.25 | $19.10 |
| LTC1290DISW#PBF | SO | 20 | I | $23.25 | $19.10 |
| LTC1290DISW#TRPBF | SO | 20 | I | $19.20 | |
| LTC1290BCN | PDIP | 20 | C | $50.00 | $39.50 |
| LTC1290BCSW | SO | 20 | C | $60.00 | $47.40 |
| LTC1290BCSW#TR | SO | 20 | C | $47.60 | |
| LTC1290BIN | PDIP | 20 | I | $69.50 | $56.40 |
| LTC1290BISW | SO | 20 | I | $69.50 | $56.40 |
| LTC1290BISW#TR | SO | 20 | I | $56.60 | |
| LTC1290CCN | PDIP | 20 | C | $40.00 | $31.60 |
| LTC1290CCSW | SO | 20 | C | $48.00 | $37.90 |
| LTC1290CCSW#TR | SO | 20 | C | $38.10 | |
| LTC1290CIN | PDIP | 20 | I | $56.50 | $45.20 |
| LTC1290CISW | SO | 20 | I | $56.50 | $45.20 |
| LTC1290CISW#TR | SO | 20 | I | $45.40 | |
| LTC1290DCN | PDIP | 20 | C | $16.70 | $13.20 |
| LTC1290DCSW | SO | 20 | C | $29.00 | $22.30 |
| LTC1290DCSW#TR | SO | 20 | C | $22.50 | |
| LTC1290DIN | PDIP | 20 | I | $46.50 | $38.20 |
| LTC1290DISW | SO | 20 | I | $46.50 | $38.20 |
| LTC1290DISW#TR | SO | 20 | I | $38.40 |
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.