Overview
The MAX189AEWE+ is a low-power, 12-bit serial analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This component is part of the MAX189 series, known for its high accuracy, low power consumption, and compact packaging. It is designed for applications where space and power efficiency are critical, such as in remote DSP and sensor systems.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Resolution | 12 | Bits | |||
| Integral Nonlinearity | ±½ | LSB (MAX189A) | |||
| Sampling Rate | 75 kHz | ||||
| Supply Voltage | 4.75 | 5.0 | 5.25 | V | |
| Supply Current (Operating) | 1.0 | 2.0 | mA | ||
| Power Dissipation (Operating) | 7.5 | mW | |||
| Power Dissipation (Shutdown) | 10 | µA | |||
| Signal-to-Noise Plus Distortion Ratio (SINAD) | 10 kHz Sine Wave Input, 0 to 4.096V P-P, 75 ksps | 70 | dB | ||
| Total Harmonic Distortion (THD) | 10 kHz Sine Wave Input, 0 to 4.096V P-P, 75 ksps | -80 | dB | ||
| Conversion Time | External clock, 4 MHz, 13 clocks/conversion | 5.5 | 8.5 | µs | |
| Track/Hold Acquisition Time | 1.5 | µs |
Key Features
- 12-bit resolution with ±½ LSB integral nonlinearity (MAX189A)
- Internal track/hold with a 75 kHz sampling rate
- Single +5V operation with low power consumption (7.5 mW in operating mode and 10 µA in shutdown mode)
- High-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE
- Requires an external reference voltage (4.096V)
- Compact packaging options including 8-pin PDIP and 16-pin SOIC
- Excellent AC characteristics, including 70 dB SINAD and -80 dB THD
Applications
The MAX189AEWE+ is ideal for various applications where low power consumption and high accuracy are crucial. These include:
- Remote DSP and sensor systems
- Data acquisition systems where space and power are limited
- Circuits requiring high accuracy and low noise
- Industrial automation and control systems
- Medical devices and diagnostic equipment
Q & A
- What is the resolution of the MAX189AEWE+ ADC?
The MAX189AEWE+ has a 12-bit resolution.
- What is the typical power consumption of the MAX189AEWE+ in operating mode?
The typical power consumption is 7.5 mW in operating mode.
- What is the shutdown current of the MAX189AEWE+?
The shutdown current is 10 µA.
- What type of serial interface does the MAX189AEWE+ use?
The MAX189AEWE+ uses a high-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE.
- Does the MAX189AEWE+ require an external reference voltage?
- What are the available package options for the MAX189AEWE+?
The MAX189AEWE+ is available in 8-pin PDIP and 16-pin SOIC packages.
- What is the signal-to-noise plus distortion ratio (SINAD) of the MAX189AEWE+?
The SINAD is 70 dB for a 10 kHz sine wave input, 0 to 4.096V P-P, at 75 ksps.
- What is the total harmonic distortion (THD) of the MAX189AEWE+?
The THD is -80 dB for a 10 kHz sine wave input, 0 to 4.096V P-P, at 75 ksps.
- What is the conversion time of the MAX189AEWE+?
The conversion time is 5.5 to 8.5 µs with an external clock at 4 MHz and 13 clocks per conversion.
- What is the track/hold acquisition time of the MAX189AEWE+?
The track/hold acquisition time is 1.5 µs.
