Overview
The MAX189CEPA is a 12-bit serial analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device operates from a single +5V supply and is designed for low-power applications. It features a successive-approximation ADC, a fast track/hold circuit, and a high-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE. The MAX189CEPA is ideal for remote DSP and sensor applications where power consumption and space are critical.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Resolution | - | - | - | 12 bits | - |
| Supply Voltage (VDD) | - | 4.75 | 5.25 | V | |
| Supply Current (IDD) | Operating mode | 1.0 | 2.0 | mA | |
| Power-down mode | - | - | - | 10 μA | |
| Throughput Rate | External clock, 4MHz | - | 75 ksps | - | |
| Conversion Time (tCONV) | - | - | 8.5 Fs | - | |
| Track/Hold Acquisition Time (tACQ) | - | - | 1.5 Fs | - | |
| Operating Temperature Range | - | -40°C | - | 85°C | |
| Reference Type | - | - | - | External |
Key Features
- 12-bit resolution with ±½ LSB integral nonlinearity (MAX189A)
- Single +5V operation with low power consumption (7.5mW in operating mode and 10μA in power-down mode)
- Fast track/hold circuit with a 1.5Fs acquisition time
- High-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE
- 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 MAX189CEPA is suitable for various applications where low power consumption and compact design are essential. These include remote DSP and sensor applications, battery-powered devices, and circuits where space and power are critical. It is also ideal for use in industrial automation, medical devices, and other embedded systems requiring precise analog-to-digital conversion.
Q & A
- What is the resolution of the MAX189CEPA ADC?
The MAX189CEPA has a 12-bit resolution. - What is the supply voltage range for the MAX189CEPA?
The supply voltage range is from 4.75V to 5.25V. - What is the typical power consumption of the MAX189CEPA in operating mode?
The typical power consumption is 2.0mA in operating mode. - What is the throughput rate of the MAX189CEPA?
The throughput rate is 75 ksps with an external clock of 4MHz. - Does the MAX189CEPA require an external reference voltage?
Yes, the MAX189CEPA requires an external reference voltage. - What are the operating temperature ranges for the MAX189CEPA?
The operating temperature range is from -40°C to 85°C. - What types of interfaces are supported by the MAX189CEPA?
The MAX189CEPA supports SPI, QSPI, and MICROWIRE interfaces. - How much power does the MAX189CEPA consume in power-down mode?
The power consumption in power-down mode is 10μA. - What are the package options available for the MAX189CEPA?
The MAX189CEPA is available in 8-pin PDIP and 16-pin SO packages. - What are some typical applications for the MAX189CEPA?
Typical applications include remote DSP and sensor applications, battery-powered devices, and industrial automation.
