Overview
The MAX155AEWI+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 MAX155 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 can convert a channel in 3.6µs, storing the result in an internal 8x8 RAM. It supports both unipolar and bipolar, single-ended or differential conversions and operates from a single +5V supply or dual ±5V supplies for wider dynamic range or bipolar conversions around ground.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 8 bits |
| Number of Analog Input Channels | 8 |
| Conversion Time Per Channel | 3.6µs |
| Input Channel Type | Differential, Single-Ended |
| Sampling Rate | 250 kSPS |
| Data Interface | Parallel |
| Supply Voltage Type | Single (+5V) or Dual (±5V) |
| Supply Voltage Range | 4.75V to 5.25V |
| Operating Temperature Range | -40°C to 85°C |
| Package Type | 28-pin WSOIC |
Key Features
- 8 simultaneously sampling track/hold inputs
- High-speed conversion time of 3.6µs per channel
- Support for unipolar or bipolar, single-ended or differential inputs
- Mixed input configurations possible
- 2.5V internal reference
- Power-down capability with low power consumption (1µA in power-down mode)
- Bidirectional interface for channel configuration and output data
- Option for output-only operation
Applications
- Phase-sensitive data acquisition
- Vibration and waveform analysis
- DSP analog input
- AC power meters
- Portable data loggers
Q & A
- What is the resolution of the MAX155AEWI+T ADC?
The MAX155AEWI+T has an 8-bit resolution.
- How many analog input channels does the MAX155AEWI+T have?
The MAX155AEWI+T has 8 analog input channels.
- What is the conversion time per channel for the MAX155AEWI+T?
The conversion time per channel is 3.6µs.
- What types of input channels are supported by the MAX155AEWI+T?
The MAX155AEWI+T supports both differential and single-ended input channels.
- What is the sampling rate of the MAX155AEWI+T?
The sampling rate is 250 kSPS.
- What is the operating temperature range of the MAX155AEWI+T?
The operating temperature range is -40°C to 85°C.
- What package types are available for the MAX155AEWI+T?
The MAX155AEWI+T is available in a 28-pin WSOIC package.
- Can the MAX155AEWI+T operate with a single supply voltage?
- What is the power consumption in power-down mode?
The power consumption in power-down mode is 1µA.
- What are some common applications of the MAX155AEWI+T?
Common applications include phase-sensitive data acquisition, vibration and waveform analysis, DSP analog input, AC power meters, and portable data loggers.
