Overview
The MAX117EAI is a microprocessor-compatible, 8-bit, 8-channel analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device operates from a single +3V supply and utilizes a half-flash technique to achieve a conversion time of 1.8µs, resulting in a sampling rate of 400ksps. The MAX117EAI is designed for low-power applications, with a power-down mode that reduces current consumption to 1µA typical. It features a track/hold circuit, enabling the digitization of fast analog signals, and includes latched, three-state buffer circuitry for direct connection to an 8-bit parallel microprocessor data bus or system input port.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 8 |
| Resolution | 8-bit |
| Supply Voltage | +3.0V to +3.6V |
| Conversion Time | 1.8µs per channel |
| Sampling Rate | 400ksps |
| Power Consumption (Operating) | 1.5mA |
| Power Consumption (Power-Down) | 1µA typical |
| Total Unadjusted Error | ≤1LSB |
| Operating Temperature Range | -40°C to +85°C |
| Package Type | 28-pin SSOP or DIP |
Key Features
- +3.0V to +3.6V single-supply operation
- 8 analog input channels
- Low power: 1.5mA (operating mode), 1µA (power-down mode)
- Fast conversion time: 1.8µs per channel
- No external clock required
- Internal track/hold circuit
- Ratiometric reference inputs
- Internally connected 8th channel monitors reference voltage
Applications
- Battery-Powered Systems
- Portable Equipment
- System-Health Monitoring
- Remote Data Acquisition
- Communications Systems
Q & A
- What is the operating supply voltage range of the MAX117EAI?
The MAX117EAI operates from a single +3.0V to +3.6V supply.
- How many analog input channels does the MAX117EAI have?
The MAX117EAI has 8 analog input channels.
- What is the conversion time of the MAX117EAI?
The conversion time of the MAX117EAI is 1.8µs per channel.
- What is the power consumption in power-down mode?
The power consumption in power-down mode is 1µA typical.
- Does the MAX117EAI require an external clock?
No, the MAX117EAI does not require an external clock.
- What is the total unadjusted error of the MAX117EAI?
The total unadjusted error of the MAX117EAI is ≤1LSB.
- What are the common applications of the MAX117EAI?
Common applications include battery-powered systems, portable equipment, system-health monitoring, remote data acquisition, and communications systems.
- How quickly can the MAX117EAI return from power-down mode to normal operating mode?
The MAX117EAI can return from power-down mode to normal operating mode in less than 900ns.
- What type of package is the MAX117EAI available in?
The MAX117EAI is available in 28-pin SSOP or DIP packages.
- Does the MAX117EAI have internal track/hold circuitry?
Yes, the MAX117EAI includes internal track/hold circuitry.
