Overview
The MAX189AEPA, produced by Analog Devices Inc./Maxim Integrated, is a low-power, 12-bit serial analog-to-digital converter (ADC). This component operates from a single +5V supply and accepts an analog input range of 0 to 5V. It features a successive-approximation ADC architecture, a fast track/hold circuit, an on-chip clock, and a high-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols.
The MAX189AEPA is designed for applications where power consumption and space are critical, making it ideal for remote DSP and sensor applications. It is available in compact 8-pin PDIP and 16-pin SO packages, enhancing its suitability for space-constrained designs.
Key Specifications
| Parameter | Symbol | Conditions | Min | Max | Units | |
|---|---|---|---|---|---|---|
| Resolution | - | - | - | 12 bits | - | - |
| Integral Nonlinearity | - | - | ±½ LSB | - | - | - |
| Supply Voltage | VDD | - | 4.75 | 5.25 | V | |
| Supply Current (Operating) | IDD | - | 1.0 | 2.0 | mA | |
| Supply Current (Power-down) | IDD | - | - | 10 | µA | |
| Conversion Time | tCONV | - | - | 8.5 Fs | - | |
| Throughput Rate | - | - | - | 75 ksps | - | |
| Track/Hold Acquisition Time | tACQ | - | - | 1.5 Fs | - | |
| Output Voltage Low | VOL | ISINK = 5mA | 0.4 | - | V | |
| Output Voltage High | VOH | ISOURCE = 1mA | - | 4 | V |
Key Features
- 12-bit resolution with ±½ LSB integral nonlinearity
- Single +5V operation with low power consumption (7.5mW in operating mode and 10µA in power-down mode)
- Successive-approximation ADC with an on-chip clock and fast track/hold circuit (1.5Fs acquisition time)
- High-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols
- Throughput rate of 75 ksps with an external clock
- Compact packages: 8-pin PDIP and 16-pin SO
- Excellent AC characteristics, including THD of -80 dB and SFDR of 80 dB
- External reference required (VREF = 4.096V)
Applications
The MAX189AEPA is well-suited for various applications where low power consumption and compact size are essential. These include:
- Remote DSP and sensor applications
- Circuits where power consumption and space are critical
- Data acquisition systems
- Industrial control systems
- Medical devices requiring precise and low-power ADCs
Q & A
- What is the resolution of the MAX189AEPA ADC?
The MAX189AEPA has a 12-bit resolution.
- What is the operating supply voltage for the MAX189AEPA?
The operating supply voltage is +5V ±5%.
- What is the typical power consumption of the MAX189AEPA in operating mode?
The typical power consumption is 7.5mW.
- What is the throughput rate of the MAX189AEPA?
The throughput rate is 75 ksps with an external clock.
- What type of serial interface does the MAX189AEPA use?
The MAX189AEPA uses a high-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols.
- Does the MAX189AEPA require an external reference voltage?
- What are the available package options for the MAX189AEPA?
The MAX189AEPA is available in 8-pin PDIP and 16-pin SO packages.
- What is the track/hold acquisition time for the MAX189AEPA?
The track/hold acquisition time is 1.5 Fs.
- How does the MAX189AEPA perform in terms of AC characteristics?
The MAX189AEPA has excellent AC characteristics, including a THD of -80 dB and an SFDR of 80 dB.
- What is the power consumption of the MAX189AEPA in power-down mode?
The power consumption in power-down mode is 10µA.
