Overview
The MAX155BCPI+ 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 MAX155BCPI+ specifically has 8 analog input channels, each with its own T/H, allowing for simultaneous sampling of all channels.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Analog Input Channels | 8 | |
| Conversion Time Per Channel | 3.6µs | |
| Resolution | 8-bit | |
| Internal Reference Voltage | 2.5V | |
| Supply Voltage | Single +5V or Dual ±5V | |
| Input Range | Unipolar or Bipolar, Single-Ended or Differential | |
| Package Type | 28-pin PDIP and wide SO | |
| Power Consumption (Active) | 18-24 mA | |
| Power Consumption (Power-Down) | 25-100 µA |
Key Features
- Simultaneously sampling track/hold inputs for all 8 channels
- High-speed conversion time of 3.6µs per channel
- Unipolar or bipolar input range with single-ended or differential inputs
- Mixed input configurations possible
- Internal 2.5V reference voltage
- Single +5V or dual ±5V supply operation
- Power-down capability for low power 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 MAX155BCPI+?
The MAX155BCPI+ has 8 analog input channels. - What is the conversion time per channel for the MAX155BCPI+?
The conversion time per channel is 3.6µs. - What are the possible input ranges for the MAX155BCPI+?
The MAX155BCPI+ supports unipolar or bipolar, single-ended or differential input ranges. - What is the internal reference voltage of the MAX155BCPI+?
The internal reference voltage is 2.5V. - What are the possible supply voltage configurations for the MAX155BCPI+?
The MAX155BCPI+ can operate from a single +5V supply or dual ±5V supplies. - What are the package types available for the MAX155BCPI+?
The MAX155BCPI+ is available in 28-pin PDIP and wide SO packages. - How does the power-down feature work on the MAX155BCPI+?
The power-down feature reduces power consumption to 25-100 µA when the device is not in use. - What is the purpose of the bidirectional interface on the MAX155BCPI+?
The bidirectional interface is used to update the channel configuration and provide output data. - What are some common applications of the MAX155BCPI+?
Common applications include phase-sensitive data acquisition, vibration and waveform analysis, DSP analog input, AC power meters, and portable data loggers. - How do you initiate conversions on the MAX155BCPI+?
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.
