Overview
The MAX187ACPA+ is a 12-bit, low-power, serial analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This component operates from a single +5V supply and is designed to accept a 0 to 5V analog input. It features an 8.5μs successive-approximation ADC, a fast track/hold circuit, an on-chip clock, and a high-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Resolution | - | - | - | 12 bits | - | - |
| Integral Nonlinearity | - | - | ±½ LSB | - | - | - |
| Sampling Rate | - | - | - | 75 ksps | - | - |
| Track/Hold Acquisition Time | tACQ | - | - | 1.5 μs | - | - |
| 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 | - | - | - | 10 μA | μA |
| Output Voltage Low | VOL | ISINK = 5 mA | - | 0.4 V | - | V |
| Output Voltage High | VOH | ISOURCE = 1 mA | - | 4 V | - | V |
Key Features
- 12-bit resolution with ±½ LSB integral nonlinearity (MAX187A)
- Internal track/hold circuit with a 1.5μs acquisition time
- Single +5V operation with low power consumption (7.5mW operating, 10μA in shutdown)
- High-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols
- On-chip clock and buffered reference (MAX187)
- Small package size with 8-pin PDIP and 16-pin SO options
- Excellent AC characteristics, including -80 dB THD and 80 dB SFDR
Applications
The MAX187ACPA+ is ideal for various applications where low power consumption and small size are crucial. These include:
- Remote DSP and sensor applications
- Circuits where power consumption and space are limited
- Industrial automation and control systems
- Medical devices requiring precise analog-to-digital conversion
- Embedded systems and IoT devices
Q & A
- What is the resolution of the MAX187ACPA+ ADC?
The MAX187ACPA+ has a 12-bit resolution
- What is the sampling rate of the MAX187ACPA+?
The sampling rate is 75 ksps
- What is the supply voltage range for the MAX187ACPA+?
The supply voltage range is from 4.75V to 5.25V
- How much power does the MAX187ACPA+ consume in operating mode?
The power consumption in operating mode is 7.5mW
- What is the power consumption in shutdown mode?
The power consumption in shutdown mode is 10μA
- What type of serial interface does the MAX187ACPA+ use?
The MAX187ACPA+ uses a high-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols
- Does the MAX187ACPA+ have an internal reference?
Yes, the MAX187ACPA+ has an on-chip buffered reference
- What are the package options for the MAX187ACPA+?
The package options include 8-pin PDIP and 16-pin SO
- What are the typical applications for the MAX187ACPA+?
Typical applications include remote DSP and sensor applications, and circuits where power consumption and space are crucial
- What are the AC characteristics of the MAX187ACPA+?
The AC characteristics include -80 dB THD and 80 dB SFDR
