Overview
The MAX156ACNG+ 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 offers a range of features that make it versatile for various applications.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Analog Input Channels | 4 | - |
| Resolution | 8-bit | - |
| Conversion Time Per Channel | 3.6µs | µs |
| Internal Reference Voltage | 2.5V | V |
| Supply Voltage | +5V (or ±5V for bipolar conversions) | V |
| Input Range | Unipolar or Bipolar, Single-Ended or Differential | - |
| Power-Down Current | 100 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
- Unipolar or bipolar input range, with single-ended or differential input configurations
- 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 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 MAX156?
The MAX156 has 4 analog input channels.
- What is the resolution of the MAX156 ADC?
The MAX156 is an 8-bit ADC.
- How long does it take for the MAX156 to convert one channel?
The conversion time per channel is 3.6µs.
- What is the internal reference voltage of the MAX156?
The internal reference voltage is 2.5V.
- What are the possible supply voltage configurations for the MAX156?
The MAX156 can operate from a single +5V supply or dual ±5V supplies for bipolar conversions.
- Can the MAX156 handle both unipolar and bipolar input ranges?
Yes, the MAX156 can handle both unipolar and bipolar input ranges, as well as single-ended or differential inputs.
- What is the power-down current of the MAX156?
The typical power-down current is 100 µA.
- In what packages is the MAX156 available?
The MAX156 is available in 24-pin narrow PDIP and 28-pin wide SO packages.
- How are conversions initiated and data accessed on the MAX156?
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 applications is the MAX156 suitable for?
The MAX156 is suitable for phase-sensitive data acquisition, vibration and waveform analysis, DSP analog input, AC power meters, and portable data loggers.
