Overview
The LTC1290BCSW#PBF, produced by Analog Devices Inc., is a single-chip 12-bit data acquisition system. This component integrates several key functional blocks, including a 12-bit successive approximation A/D converter, an 8-channel analog multiplexer, a sample-and-hold circuit, and a synchronous, full duplex serial interface. It is designed to support both single-ended and differential input configurations, making it versatile for various data acquisition needs. The LTC1290 is notable for its low power consumption and the ability to be powered down with a serial word, making it suitable for applications where power efficiency is crucial.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12-bit (unipolar), 11-bit plus sign (bipolar) |
| Number of Channels | 8 |
| Input Type | Single-ended or differential |
| Sample-and-Hold | On-chip for all single-ended input channels |
| Supply Voltage | Single supply 5V or ±5V |
| Maximum Throughput Rate | 50 kHz |
| Package Type | 20-Lead SOIC (Wide 0.3 Inch) |
| Data Word Length | Programmable: 8, 12, or 16 bits |
| Serial Interface | Synchronous, full duplex, four-wire serial interface |
Key Features
- Software programmable features: unipolar/bipolar conversion, differential/single-ended inputs, MSB- or LSB-first data sequence, variable data word length, and power shutdown.
- Built-in sample-and-hold circuit for all single-ended input channels.
- Direct four-wire interface compatible with most microprocessor serial ports and all microprocessor parallel ports.
- Low power consumption with the ability to power down with a serial word.
- Available in 20-Lead PDIP and SO Wide packages.
Applications
The LTC1290 is suitable for a variety of applications requiring precise data acquisition, such as industrial control systems, medical devices, automotive systems, and any environment where multiple analog inputs need to be converted into digital data efficiently. Its low power consumption and flexible interface make it particularly useful in battery-powered devices and systems requiring minimal power usage.
Q & A
- What is the resolution of the LTC1290 A/D converter?
The LTC1290 has a resolution of 12 bits for unipolar conversions and 11 bits plus sign for bipolar conversions. - How many input channels does the LTC1290 have?
The LTC1290 has 8 input channels. - What types of input configurations are supported by the LTC1290?
The LTC1290 supports both single-ended and differential input configurations. - Does the LTC1290 have a built-in sample-and-hold circuit?
Yes, the LTC1290 includes an on-chip sample-and-hold circuit for all single-ended input channels. - What is the maximum throughput rate of the LTC1290?
The maximum throughput rate of the LTC1290 is 50 kHz. - What are the supply voltage options for the LTC1290?
The LTC1290 can operate on a single supply of 5V or ±5V. - What types of packages are available for the LTC1290?
The LTC1290 is available in 20-Lead PDIP and SO Wide packages. - Is the data word length of the LTC1290 programmable?
Yes, the data word length can be programmed for 8, 12, or 16 bits. - How does the LTC1290 interface with microprocessors?
The LTC1290 uses a synchronous, full duplex, four-wire serial interface compatible with most microprocessor serial ports and all microprocessor parallel ports. - Can the LTC1290 be powered down to save power?
Yes, the LTC1290 can be powered down with a serial word to reduce power consumption in idle states.
