Overview
The LTC1290DIJ is a single-chip 12-bit data acquisition system manufactured by Analog Devices Inc. This component integrates several key functional blocks, including a 12-bit successive approximation analog-to-digital converter (ADC), an analog multiplexer, a sample-and-hold circuit, and a synchronous, full duplex serial interface. The LTC1290 is designed to provide high accuracy and flexibility in various data acquisition applications.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 12 Bits | |
| Conversion Time | 13 μs (Max Over Temp) | μs |
| Supply Voltage | 4.75V to 5.25V | V |
| Operating Temperature Range | -40°C to 85°C (LTC1290DI) | °C |
| Supply Current | 6.0 mA | mA |
| Maximum Throughput Rate | 50 kHz | kHz |
| Input Channels | 8 (Single-Ended or Differential) | |
| Package Type | 20-Lead PDIP and SO Wide Packages |
Key Features
- Software programmable features for unipolar or bipolar conversion.
- Four differential or eight single-ended inputs with on-chip sample-and-hold for all single-ended input channels.
- Power shutdown capability for low power consumption.
- Direct four-wire interface to most microprocessor serial ports and parallel ports.
- Variable data word length (8, 12, or 16 bits) with MSB- or LSB-first data sequence.
- Automatic 2's complement output coding in bipolar mode.
Applications
The LTC1290DIJ is suitable for a wide range of applications requiring precise data acquisition, such as:
- Industrial control systems.
- Medical devices.
- Aerospace and defense systems.
- Automotive systems.
- Test and measurement equipment.
Q & A
- What is the resolution of the LTC1290DIJ ADC?
The LTC1290DIJ has a resolution of 12 bits for unipolar conversion and 11 bits plus sign for bipolar conversion.
- What is the maximum conversion time of the LTC1290DIJ?
The maximum conversion time is 13 μs over the operating temperature range.
- What are the input channel configurations available for the LTC1290DIJ?
The LTC1290DIJ can be configured for either single-ended or differential inputs, with a total of 8 channels.
- What is the power shutdown feature of the LTC1290DIJ?
The LTC1290DIJ can be powered down with a serial word to reduce power consumption in idle states.
- What is the maximum throughput rate of the LTC1290DIJ?
The maximum throughput rate is 50 kHz.
- What are the package types available for the LTC1290DIJ?
The LTC1290DIJ is available in 20-Lead PDIP and SO Wide Packages.
- How does the LTC1290DIJ interface with microprocessors?
The LTC1290DIJ uses a synchronous, full duplex, four-wire serial interface compatible with most microprocessor serial and parallel ports.
- Can the data word length of the LTC1290DIJ be programmed?
Yes, the output data word can be programmed for lengths of 8, 12, or 16 bits.
- What is the operating temperature range of the LTC1290DIJ?
The operating temperature range is -40°C to 85°C.
- What is the supply voltage range for the LTC1290DIJ?
The supply voltage range is 4.75V to 5.25V.
