Overview
The MAX155ACPI, produced by Analog Devices Inc./Maxim Integrated, is a high-speed, 8-bit, multichannel analog-to-digital converter (ADC) designed for precise and simultaneous sampling of multiple analog input channels. This device is part of the MAX155/MAX156 family, which features simultaneous track/holds (T/Hs) to eliminate timing differences between input channel samples.
Key Specifications
| Parameter | Specification |
|---|---|
| Number of Analog Input Channels | 8 (MAX155) |
| Conversion Time Per Channel | 3.6µs |
| Resolution | 8-bit |
| Input Range | Unipolar or Bipolar, Single-Ended or Differential |
| Internal Reference Voltage | 2.5V |
| Supply Voltage | Single +5V or Dual ±5V |
| Signal-to-Noise and Distortion Ratio (SINAD) | 48 dB (typical) |
| Total Harmonic Distortion (THD) | -60 dB (typical) |
| Spurious-Free Dynamic Range (SFDR) | -62 dB (typical) |
| Aperture Delay | 20 ns (typical) |
| Aperture Delay Matching | 4 ns (typical) |
| Package Types | 28-pin PDIP, 28-pin wide SO |
Key Features
- Simultaneously sampling track/holds (T/Hs) to eliminate timing differences between input channel samples
- 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
- Power-down capability
- Bidirectional interface for channel configuration and output data
- Output-only operation capability
Applications
- Phase-sensitive data acquisition
- Vibration and waveform analysis
- DSP analog input
- AC power meters
- Portable data loggers
Q & A
- What is the primary function of the MAX155ACPI?
The MAX155ACPI is an 8-bit, multichannel analog-to-digital converter (ADC) designed for high-speed, simultaneous sampling of multiple analog input channels.
- How many analog input channels does the MAX155ACPI have?
The MAX155ACPI has 8 analog input channels, each with its own track/hold circuit.
- What is the conversion time per channel for the MAX155ACPI?
The conversion time per channel is 3.6µs.
- What types of input ranges does the MAX155ACPI support?
The MAX155ACPI supports unipolar or bipolar, single-ended or differential input ranges.
- What is the internal reference voltage of the MAX155ACPI?
The internal reference voltage is 2.5V.
- Can the MAX155ACPI operate on a single supply voltage?
Yes, the MAX155ACPI can operate on a single +5V supply or dual ±5V supplies.
- What are some common applications of the MAX155ACPI?
Common applications include phase-sensitive data acquisition, vibration and waveform analysis, DSP analog input, AC power meters, and portable data loggers.
- Does the MAX155ACPI have power-down capability?
Yes, the MAX155ACPI has power-down capability to conserve power when not in use.
- How is data accessed from the MAX155ACPI?
Data is accessed from the ADC’s RAM with a pulse to the RD pin, and the device features a bidirectional interface for channel configuration and output data.
- What package types are available for the MAX155ACPI?
The MAX155ACPI is available in 28-pin PDIP and 28-pin wide SO packages.
