Overview
The MAX156AEWI+T is a high-speed, 8-bit, multichannel analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This component is part of the MAX155/MAX156 family, which features simultaneous track/holds (T/Hs) to eliminate timing differences between input channel samples. The MAX156 specifically has 4 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 various input configurations, including unipolar or bipolar, single-ended or differential conversions.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Analog Input Channels | 4 | |
| Conversion Time Per Channel | 3.6µs | |
| Resolution | 8-bit | |
| Internal Reference Voltage | 2.5V | |
| Supply Voltage | +5V or ±5V | V |
| Power Consumption (Active) | 18 mA (typical) | mA |
| Power Consumption (Power-Down) | 1 µA (typical) | µA |
| Package Types | 24-pin narrow PDIP, 28-pin wide SO |
Key Features
- Simultaneously sampling track/hold inputs to eliminate timing differences between channels.
- High-speed conversion time of 3.6µs per channel.
- Support for unipolar or bipolar, single-ended or differential input configurations.
- Mixed input configurations possible.
- Internal 2.5V reference voltage.
- Single +5V or dual ±5V supply operation.
- Power-down capability with low power consumption.
- Bidirectional interface for channel configuration and data output.
Applications
- Phase-sensitive data acquisition.
- Vibration and waveform analysis.
- DSP analog input.
- AC power meters.
- Portable data loggers.
Q & A
- What is the number of analog input channels on the MAX156AEWI+T?
The MAX156AEWI+T has 4 analog input channels. - What is the conversion time per channel for the MAX156AEWI+T?
The conversion time per channel is 3.6µs. - What is the resolution of the MAX156AEWI+T ADC?
The resolution is 8-bit. - Does the MAX156AEWI+T support bipolar input configurations?
Yes, it supports both unipolar and bipolar input configurations. - What are the package types available for the MAX156AEWI+T?
The component is available in 24-pin narrow PDIP and 28-pin wide SO packages. - Can the MAX156AEWI+T operate on a single supply voltage?
Yes, it can operate on a single +5V supply or dual ±5V supplies. - What is the power consumption of the MAX156AEWI+T in power-down mode?
The power consumption in power-down mode is typically 1 µA. - Does the MAX156AEWI+T have an internal reference voltage?
Yes, it has an internal 2.5V reference voltage. - How are conversions initiated and data accessed on the MAX156AEWI+T?
Conversions are initiated with a pulse to the active-low WR pin, and data is accessed with a pulse to the active-low RD pin. - What types of input configurations are supported by the MAX156AEWI+T?
The component supports single-ended, differential, unipolar, and bipolar input configurations.
