Overview
The MAX155ACWI+T is a high-speed, 8-bit, multichannel analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX155/MAX156 family, which features simultaneous track/holds (T/Hs) to eliminate timing differences between input channel samples. The MAX155ACWI+T specifically has 8 analog input channels, each with its own T/H, allowing all channels to sample at the same instant. This ADC is designed for high-speed data acquisition and supports both single-ended and differential input configurations, as well as unipolar and bipolar conversions.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 8 bits |
| Number of Analog Input Channels | 8 |
| Sampling Rate | 250 kS/s |
| Input Type | Differential/Single-Ended |
| Architecture | SAR (Successive Approximation Register) |
| Conversion Time | 3.6µs per channel |
| Internal Reference | 2.5V |
| Power Supply | Single +5V supply (optional -5V for bipolar conversions) |
| Operating Temperature Range | 0°C to 70°C |
| Package Type | 28-pin SOIC |
Key Features
- Simultaneous track/holds (T/Hs) for all input channels to eliminate timing differences.
- High-speed conversion: 3.6µs per channel.
- Internal 2.5V reference voltage.
- Power-down capability with a current consumption of 1µA.
- Supports single-ended and differential input configurations.
- Unipolar and bipolar conversion modes.
- Bidirectional interface for updating channel configuration and accessing output data.
- Optional output-only operation.
Applications
The MAX155ACWI+T is suitable for a variety of high-speed data acquisition applications, including:
- Industrial automation and control systems.
- Medical devices requiring precise and simultaneous sampling of multiple channels.
- Aerospace and defense systems where high-speed data conversion is critical.
- Test and measurement equipment.
- Automotive systems for sensor data acquisition.
Q & A
- What is the resolution of the MAX155ACWI+T ADC?
The MAX155ACWI+T has an 8-bit resolution.
- How many analog input channels does the MAX155ACWI+T have?
The MAX155ACWI+T has 8 analog input channels.
- What is the sampling rate of the MAX155ACWI+T?
The sampling rate is 250 kS/s.
- What types of input configurations are supported by the MAX155ACWI+T?
The device supports both single-ended and differential input configurations.
- How long does it take for the MAX155ACWI+T to convert one channel?
The conversion time per channel is 3.6µs.
- What is the internal reference voltage of the MAX155ACWI+T?
The internal reference voltage is 2.5V.
- Can the MAX155ACWI+T operate in bipolar conversion mode?
- What is the power-down current consumption of the MAX155ACWI+T?
The power-down current consumption is 1µA.
- In what package type is the MAX155ACWI+T available?
The device is available in a 28-pin SOIC package.
- How is data accessed from the MAX155ACWI+T?
Data is accessed through a bidirectional interface with pulses to the active-low RD pin.
