Overview
The MAX187ACWE+ is a low-power, 12-bit serial analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This component is designed for applications where power consumption and space are critical. It features a successive-approximation ADC with an internal track/hold circuit and an on-chip clock, enabling high-speed conversions. The MAX187ACWE+ is compatible with various serial interfaces, including SPI, QSPI, and MICROWIRE, making it versatile for use with digital signal processors and microcontrollers.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Resolution | 12-bit | |||||
| Integral Nonlinearity | ±½ LSB | |||||
| Sampling Rate | 75 kHz | |||||
| Supply Voltage | VDD | 4.75 V | 5 V | 5.25 V | V | |
| Supply Current (Operating) | IDD | 1.5 mA | 2.5 mA | mA | ||
| Supply Current (Power-down) | IDD | 2 μA | 10 μA | μA | ||
| Power Dissipation | Pd | 478 mW | mW | |||
| Operating Temperature Range | 0°C | 70°C | °C | |||
| Storage Temperature Range | -60°C | 150°C | °C |
Key Features
- 12-bit resolution with ±½ LSB integral nonlinearity.
- Internal track/hold circuit with a sampling rate of 75 kHz.
- Single +5V operation with low power consumption (7.5 mW in operating mode and 10 μA in power-down mode).
- High-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE.
- On-chip clock and internal reference (buffered for MAX187).
- Compact packaging options including 8-pin PDIP and 16-pin SO packages.
- Excellent AC characteristics, including small-signal bandwidth rolloff at -3dB at 4.5 MHz and full-power bandwidth at 0.8 MHz.
Applications
The MAX187ACWE+ is ideal for various applications where low power consumption and compact size are essential. These include:
- Remote DSP and sensor applications.
- Data acquisition systems.
- Circuits where power consumption and space are critical.
- Industrial automation and control systems.
- Medical devices requiring precise and low-power ADCs.
Q & A
- What is the resolution of the MAX187ACWE+ ADC?
The MAX187ACWE+ has a 12-bit resolution.
- What is the typical power consumption of the MAX187ACWE+ in operating mode?
The typical power consumption is 7.5 mW in operating mode.
- What are the compatible serial interfaces for the MAX187ACWE+?
The MAX187ACWE+ is compatible with SPI, QSPI, and MICROWIRE interfaces.
- What is the sampling rate of the MAX187ACWE+?
The sampling rate is 75 kHz.
- What are the available package options for the MAX187ACWE+?
The available package options include 8-pin PDIP and 16-pin SO packages.
- What is the operating temperature range for the MAX187ACWE+?
The operating temperature range is from 0°C to 70°C.
- Does the MAX187ACWE+ have an internal reference?
Yes, the MAX187ACWE+ has an internal buffered reference.
- How does the MAX187ACWE+ perform in terms of AC characteristics?
The MAX187ACWE+ has excellent AC characteristics, including a small-signal bandwidth rolloff at -3dB at 4.5 MHz and full-power bandwidth at 0.8 MHz).
- What is the power dissipation of the MAX187ACWE+?
The power dissipation is approximately 478 mW).
- Can the MAX187ACWE+ be used in remote sensor applications?
Yes, it is suitable for remote sensor applications due to its low power consumption and compact size).
