Overview
The MAX1494CCJ, produced by Analog Devices Inc./Maxim Integrated, is a highly integrated, low-power analog-to-digital converter (ADC) with an embedded liquid crystal display (LCD) driver. This 4.5-digit ADC operates from a single 2.7V to 5.25V power supply and is designed for high accuracy and low power consumption. The device features a sigma-delta ADC architecture, an internal high-accuracy oscillator, and a triplexed LCD driver, making it suitable for various measurement applications.
Key Specifications
| Parameter | Description |
|---|---|
| Resolution | 4.5 digits (±19,999 count) |
| Input Range | Selectable: ±2V or ±200mV |
| Power Supply | Single 2.7V to 5.25V |
| Operating Current | Maximum 960µA |
| Shutdown Current | Maximum 400µA |
| Temperature Range | 0°C to +70°C |
| Package | 32-pin, 7mm x 7mm LQFP |
| Serial Interface | SPI-/QSPI-/MICROWIRE-compatible |
| Line Noise Rejection | >100dB simultaneous rejection of 50Hz and 60Hz |
Key Features
- High resolution: 4.5 digits (±19,999 count)
- Sigma-delta ADC architecture with no integrating or autozeroing capacitors required
- Internal high-accuracy oscillator and internal charge pump
- Selectable input range: ±2V or ±200mV
- Selectable voltage reference: internal 2.048V or external
- Automatic offset calibration and continuous internal-offset calibration
- Triplexed LCD driver and SPI-/QSPI-/MICROWIRE-compatible serial interface
- Data hold, peak hold, overrange and underrange detection, and low-battery monitor
- Low power consumption with maximum 960µA operating current and maximum 400µA shutdown current
Applications
- Digital Panel Meters
- Hand-Held Meters
- Digital Voltmeters
- Digital Multimeters
Q & A
- What is the resolution of the MAX1494CCJ?
The MAX1494CCJ has a resolution of 4.5 digits (±19,999 count). - What are the input ranges available for the MAX1494CCJ?
The device has selectable input ranges of ±2V or ±200mV. - What is the power supply range for the MAX1494CCJ?
The device operates from a single 2.7V to 5.25V power supply. - What is the maximum operating current of the MAX1494CCJ?
The maximum operating current is 960µA. - Does the MAX1494CCJ require external precision components?
No, the MAX1494CCJ does not require external precision integrating capacitors, autozero capacitors, crystal oscillators, or charge pumps. - What is the temperature range for the MAX1494CCJ?
The device operates over a temperature range of 0°C to +70°C. - What type of serial interface does the MAX1494CCJ support?
The device supports SPI-/QSPI-/MICROWIRE-compatible serial interfaces. - What is the line noise rejection capability of the MAX1494CCJ?
The device offers >100dB simultaneous rejection of 50Hz and 60Hz line noise. - What are some of the additional features of the MAX1494CCJ?
The device includes data hold, peak hold, overrange and underrange detection, and a low-battery monitor. - Is an evaluation kit available for the MAX1494CCJ?
Yes, an evaluation kit (MAX1494EVKIT) is available for the MAX1494CCJ.
