Overview
The MAX1157BEUI+ is a high-performance, 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX1157/MAX1159/MAX1175 family and is designed for high-accuracy and low-power data-acquisition applications. It operates from a single +4.75V to +5.25V analog supply and has a separate digital supply input compatible with +2.7V to +5.25V logic. The MAX1157BEUI+ is ideal for battery-powered systems, industrial process control, instrumentation, and medical applications due to its excellent AC and DC performance characteristics.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 14 bits |
| Number of Channels | 1 Channel |
| Interface Type | Parallel |
| Sampling Rate | 135 kS/s |
| Analog Input Voltage Range | 0 to +10V |
| Analog Supply Voltage | +4.75V to +5.25V |
| Digital Supply Voltage | +2.7V to +5.25V |
| Integral Nonlinearity (INL) | ±1 LSB |
| Differential Nonlinearity (DNL) | ±1 LSB |
| Power Consumption (External Reference) | 23mW at 135ksps |
| Power Consumption (Internal Reference) | 29mW at 135ksps |
| AutoShutdown Current | 0.4mA at 10ksps |
| Package Type | 28-Pin TSSOP |
| Operating Temperature Range | -40°C to +85°C (extended), 0°C to +70°C (commercial) |
Key Features
- High-resolution 14-bit conversion with ±1LSB INL and ±1LSB DNL accuracy.
- Single +4.75V to +5.25V analog supply and separate digital supply input for +2.7V to +5.25V logic compatibility.
- Low power consumption: 23mW at 135ksps with external reference and 29mW with internal reference.
- AutoShutdown™ feature reduces supply current to 0.4mA at 10ksps.
- Excellent AC performance: THD = -100dB, SINAD = 81dB, SNR = 82dB.
- Compact 28-pin TSSOP package.
- Full specification over -40°C to +85°C extended temperature range and 0°C to +70°C commercial temperature range.
Applications
- Industrial process control and instrumentation.
- Medical applications requiring high accuracy and low power consumption.
- Data-acquisition systems, particularly in battery-powered devices.
- Temperature sensing and monitoring.
- Precision instrumentation.
Q & A
- What is the resolution of the MAX1157BEUI+ ADC?
The MAX1157BEUI+ has a resolution of 14 bits.
- What is the sampling rate of the MAX1157BEUI+?
The sampling rate is 135 kS/s.
- What is the analog input voltage range for the MAX1157BEUI+?
The analog input voltage range is 0 to +10V.
- What are the power consumption characteristics of the MAX1157BEUI+?
The device consumes 23mW at 135ksps with an external reference and 29mW with the internal reference. In AutoShutdown mode, it reduces to 0.4mA at 10ksps.
- What is the operating temperature range of the MAX1157BEUI+?
The device operates over a temperature range of -40°C to +85°C (extended) and 0°C to +70°C (commercial).
- What package type is the MAX1157BEUI+ available in?
The MAX1157BEUI+ is available in a 28-pin TSSOP package.
- What are some typical applications for the MAX1157BEUI+?
Typical applications include industrial process control, medical devices, data-acquisition systems, temperature sensing, and precision instrumentation.
- How does the AutoShutdown feature benefit the MAX1157BEUI+?
The AutoShutdown feature reduces the supply current to 0.4mA at 10ksps, significantly lowering power consumption during idle periods.
- What is the digital supply voltage range for the MAX1157BEUI+?
The digital supply voltage range is +2.7V to +5.25V.
- What are the key AC performance metrics of the MAX1157BEUI+?
The key AC performance metrics include THD = -100dB, SINAD = 81dB, and SNR = 82dB.
