Overview
The LTC2420CS8#PBF is a 20-bit, micropower, no latency delta-sigma analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This device is designed for high precision and low power consumption, making it suitable for a variety of data acquisition applications. The LTC2420 features an integrated oscillator and a digital filter that settles in a single cycle, which is particularly beneficial for multiplexed applications. It operates from a supply voltage range of 2.7V to 5.5V and accepts any external reference voltage from 0.1V to VCC. The device is known for its high accuracy and ability to reject power line interference, making it a reliable choice for sensitive measurements.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer Part Number | LTC2420CS8#PBF |
| Package Description | 8-Lead SOIC (Narrow 0.15 Inch) |
| Pin Count | 8 |
| Number of Bits | 20 |
| Converter Type | Delta-Sigma ADC |
| Analog Input Voltage Range | -0.0125V to 6.1875V |
| Supply Voltage Range | 2.7V to 5.5V |
| Operating Temperature Range | -40°C to 70°C |
| Linearity Error (Max) | 0.1375% |
| Conversion Time (Max) | 163440 µs |
| Output Format | Serial, Binary |
| Interface Compatibility | SPI, MICROWIRE |
Key Features
- High precision 20-bit delta-sigma ADC with integrated oscillator.
- No latency conversion with a digital filter that settles in a single cycle.
- Operates from a supply voltage range of 2.7V to 5.5V.
- Accepts any external reference voltage from 0.1V to VCC.
- Extended input conversion range of –12.5% VREF to 112.5% VREF.
- Configurable for better than 110dB rejection at 50Hz or 60Hz ±2%, or driven by an external oscillator for user-defined rejection frequency.
- Flexible 3-wire digital interface compatible with SPI and MICROWIRE protocols.
Applications
- Data acquisition systems, particularly in weigh scales and gas analyzers.
- Sensitive measurement applications requiring high accuracy and low noise.
- Multiplexed applications where single-cycle settling of the digital filter is beneficial.
- Industrial and medical devices that require precise analog-to-digital conversion.
Q & A
- What is the resolution of the LTC2420CS8#PBF ADC?
The LTC2420CS8#PBF is a 20-bit analog-to-digital converter.
- What is the operating supply voltage range of the LTC2420CS8#PBF?
The device operates from a supply voltage range of 2.7V to 5.5V.
- What types of interfaces does the LTC2420CS8#PBF support?
The device supports SPI and MICROWIRE protocols through a flexible 3-wire digital interface.
- Can the LTC2420CS8#PBF reject power line interference?
Yes, it can be configured for better than 110dB rejection at 50Hz or 60Hz ±2%, or driven by an external oscillator for user-defined rejection frequency.
- What is the maximum conversion time of the LTC2420CS8#PBF?
The maximum conversion time is 163440 µs.
- What is the package type of the LTC2420CS8#PBF?
The device is packaged in an 8-Lead SOIC (Narrow 0.15 Inch).
- What is the operating temperature range of the LTC2420CS8#PBF?
The operating temperature range is -40°C to 70°C.
- Can the LTC2420CS8#PBF accept any external reference voltage?
Yes, it accepts any external reference voltage from 0.1V to VCC.
- What is the linearity error of the LTC2420CS8#PBF?
The maximum linearity error is 0.1375%.
- Is the LTC2420CS8#PBF RoHS compliant?
Yes, the LTC2420CS8#PBF is RoHS compliant.
