Overview
The MAX156BENG 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 series, 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 conversions, completing a channel conversion in 3.6µs and storing the result in an internal 8x8 RAM.
Key Specifications
| Parameter | Description |
|---|---|
| Number of Analog Input Channels | 4 |
| Resolution | 8-bit |
| 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 |
| Maximum Operating Temperature | +85°C |
| 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.
- Power-down capability with a current of 1µA.
- Bidirectional interface for updating channel configuration and providing output data.
- Option for output-only operation.
Applications
- Phase-sensitive data acquisition.
- Vibration and waveform analysis.
- DSP (Digital Signal Processing) analog input.
- AC power meters.
- Portable data loggers.
Q & A
- What is the conversion time per channel for the MAX156BENG?
The conversion time per channel is 3.6µs.
- How many analog input channels does the MAX156BENG have?
The MAX156BENG has 4 analog input channels.
- What are the supply voltage options for the MAX156BENG?
The MAX156BENG can operate from a single +5V supply or dual ±5V supplies.
- What is the internal reference voltage of the MAX156BENG?
The internal reference voltage is 2.5V.
- Can the MAX156BENG handle bipolar input conversions?
Yes, the MAX156BENG can perform bipolar input conversions.
- What is the power-down current of the MAX156BENG?
The power-down current is 1µA.
- What are the package types available for the MAX156BENG?
The MAX156BENG is available in 24-pin narrow PDIP and 28-pin wide SO packages.
- Can the MAX156BENG be configured for mixed input types?
Yes, the MAX156BENG supports mixed input configurations including single-ended and differential inputs.
- What is the maximum operating temperature for the MAX156BENG?
The maximum operating temperature is +85°C.
- How are conversions initiated and data accessed in the MAX156BENG?
Conversions are initiated with a pulse to the WR pin, and data is accessed from the ADC’s RAM with a pulse to the RD pin.
