Overview
The LTC1290DCSW#PBF is a single-chip 12-bit data acquisition system produced by Analog Devices Inc. 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 provide high precision and flexibility in various data acquisition applications.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12-bit (unipolar), 11-bit plus sign (bipolar) |
| Number of Input Channels | 8 channels (single-ended or differential) |
| Input Range | 0V to 5V or ±5V, ±15V overvoltage range |
| Sample-and-Hold | On-chip sample-and-hold 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) |
| Serial Interface | Synchronous, full duplex, four-wire serial interface |
| Data Word Length | Programmable: 8, 12, or 16 bits |
| Power Shutdown | Power down with a serial word for low power consumption |
Key Features
- Software programmable features: unipolar/bipolar conversion, four differential/eight single-ended inputs, MSB- or LSB-first data sequence, variable data word length.
- Built-in sample-and-hold circuit for all single-ended input channels.
- Direct four-wire interface to most microprocessor serial ports and all microprocessor parallel ports.
- Low power consumption with power shutdown capability via a serial word.
- Compatibility with industry standard full duplex serial interfaces.
- Automatic 2's complement output coding in bipolar mode.
Applications
The LTC1290 is suitable for a wide range of data acquisition applications, including industrial control systems, medical devices, automotive systems, and any environment where precise and flexible analog-to-digital conversion is required. Its ability to handle both single-ended and differential inputs, along with its low power consumption and programmable features, make it a versatile component for various embedded systems.
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 that can be configured for either single-ended or differential inputs.
- What is the input voltage range for the LTC1290?
The input voltage range is 0V to 5V or ±5V, with an overvoltage range of ±15V.
- 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 is 50 kHz.
- How can the LTC1290 be powered down to reduce power consumption?
The LTC1290 can be powered down with a serial word to reduce power consumption in idle states.
- What types of packages are available for the LTC1290?
The LTC1290 is available in 20-Lead PDIP (Narrow 0.3 Inch) and 20-Lead SOIC (Wide 0.3 Inch) packages.
- Is the LTC1290 compatible with industry standard serial interfaces?
Yes, the LTC1290 is designed to be compatible with industry standard full duplex serial interfaces.
- Can the data word length of the LTC1290 be programmed?
Yes, the data word length can be programmed to be 8, 12, or 16 bits.
- Does the LTC1290 support both MSB- and LSB-first data sequences?
Yes, the LTC1290 supports both MSB- and LSB-first data sequences.
