Overview
The MAX156BEWI+ 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 | |
| Internal Reference Voltage | 2.5V | |
| Supply Voltage | Single +5V or Dual ±5V | |
| Input Range | Unipolar or Bipolar, Single-Ended or Differential | |
| Power-Down Current | 1µA | |
| Package Types | 24-pin narrow PDIP, 28-pin wide SO |
Key Features
- Simultaneously sampling track/hold inputs
- High-speed conversion time of 3.6µs per channel
- Unipolar or bipolar input range
- Single-ended or differential inputs
- Mixed input configurations possible
- 2.5V internal reference voltage
- Single +5V or dual ±5V supply operation
- Power-down capability with low current consumption
- Bidirectional interface for channel configuration and output data
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 MAX156?
The MAX156 has 4 analog input channels.
- What is the conversion time per channel for the MAX156?
The conversion time per channel is 3.6µs.
- What are the possible input configurations for the MAX156?
The MAX156 supports unipolar or bipolar, single-ended or differential input configurations.
- What is the internal reference voltage of the MAX156?
The internal reference voltage is 2.5V.
- What are the supply voltage options for the MAX156?
The MAX156 can operate from a single +5V supply or dual ±5V supplies.
- How is data accessed from the MAX156's RAM?
Data is accessed from the ADC’s RAM with a pulse to the active-low RD pin.
- What are the package types available for the MAX156?
The MAX156 is available in 24-pin narrow PDIP and 28-pin wide SO packages.
- Does the MAX156 have power-down capability?
- What are some typical applications of the MAX156?
Typical applications include phase-sensitive data acquisition, vibration and waveform analysis, DSP analog input, AC power meters, and portable data loggers.
- How are conversions initiated on the MAX156?
Conversions are initiated with a pulse to the active-low WR pin.
