Overview
The MAX187CEPA is a 12-bit serial analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This component operates from a single +5V supply and is designed for low-power applications. It features a serial interface compatible with SPI, QSPI, and MICROWIRE, making it suitable for communication with most digital signal processors and microcontrollers. The MAX187CEPA is particularly useful in applications where power consumption and space are critical, such as remote DSP and sensor systems.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 12-bit | |
| Integral Nonlinearity (INL) | ±½ LSB (MAX187A), ±2 LSB (standard) | |
| Operating Supply Voltage | 4.75 to 5.25 | V |
| Supply Current (Operating Mode) | 1.5 to 2.5 mA | mA |
| Power-down Mode Current | 2 to 10 µA | µA |
| Sampling Rate | 75 kHz | |
| Track/Hold Acquisition Time | 1.5 Fs | |
| Conversion Time | 5.5 to 8.5 Fs | |
| Operating Temperature Range | 0°C to +70°C (MAX187_C_), -40°C to +85°C (MAX187_E_) | °C |
| Package Type | 8-PDIP |
Key Features
- Low power consumption: 7.5 mW in operating mode and 10 µW in shutdown mode.
- Single +5V supply operation.
- On-chip buffered reference (MAX187) or external reference option (MAX189).
- Serial interface compatible with SPI, QSPI, and MICROWIRE.
- High resolution: 12-bit with ±½ LSB integral nonlinearity for the MAX187A model.
- Internal track/hold circuit with a sampling rate of 75 kHz.
- Small package size: 8-pin PDIP and 16-pin SO packages available.
- Excellent AC characteristics, including -80 dB THD and 80 dB SFDR.
Applications
The MAX187CEPA is ideal for various applications where low power consumption and compact design are essential. These include:
- Remote DSP and sensor systems.
- Circuits where power consumption and space are critical.
- Industrial automation and control systems.
- Medical devices requiring precise and low-power ADCs.
- Automotive systems where reliability and low power are crucial.
Q & A
- What is the resolution of the MAX187CEPA ADC?
The MAX187CEPA has a 12-bit resolution.
- What is the operating supply voltage range for the MAX187CEPA?
The operating supply voltage range is from 4.75V to 5.25V.
- What is the typical power consumption of the MAX187CEPA in operating mode?
The typical power consumption is 7.5 mW in operating mode.
- Does the MAX187CEPA have an internal reference?
Yes, the MAX187CEPA has an on-chip buffered reference.
- What is the sampling rate of the MAX187CEPA?
The sampling rate is 75 kHz.
- What are the compatible serial interfaces for the MAX187CEPA?
The MAX187CEPA is compatible with SPI, QSPI, and MICROWIRE interfaces.
- What is the typical track/hold acquisition time for the MAX187CEPA?
The typical track/hold acquisition time is 1.5 Fs.
- What are the available package types for the MAX187CEPA?
The MAX187CEPA is available in 8-pin PDIP and 16-pin SO packages.
- What is the operating temperature range for the MAX187CEPA?
The operating temperature range is from 0°C to +70°C for the MAX187_C_ model and from -40°C to +85°C for the MAX187_E_ model.
- How much current does the MAX187CEPA consume in power-down mode?
The current consumption in power-down mode is 2 to 10 µA.
