Overview
The MAX189BCPA is a +5V, low-power, 12-bit serial analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device operates from a single +5V supply and accepts an analog input range of 0 to 5V. It features a successive-approximation ADC with a fast track/hold circuit and an on-chip clock, making it suitable for applications where power consumption and space are critical.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Supply Voltage | VDD | 4.75 | 5.25 | V | ||
| Supply Current (Operating) | IDD | 1.0 | 2.0 | mA | ||
| Supply Current (Power-down) | IDD | 2 | 10 | nA | ||
| Conversion Time | tCONV | 5.5 | 8.5 | Fs | ||
| Track/Hold Acquisition Time | tACQ | 1.5 | Fs | |||
| Throughput Rate | fCLK = 4.0MHz, external clock | 75 | ksps | |||
| Integral Nonlinearity | ±½ LSB | |||||
| 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 10nA in shutdown mode)
- Successive-approximation ADC with a fast track/hold circuit (1.5Fs acquisition time)
- High-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE
- External clock access with a throughput rate of 75ksps
- Small package options: 8-pin PDIP and 16-pin SO
- Excellent AC characteristics, including THD of -80 dB and SFDR of 80 dB
Applications
The MAX189BCPA 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 critical
- Data acquisition systems, especially when integrated with microcontrollers or digital signal processors
Q & A
- What is the supply voltage range for the MAX189BCPA?
The supply voltage range is from 4.75V to 5.25V.
- What is the typical power consumption of the MAX189BCPA in operating mode?
The typical power consumption is 2.0mA (or 7.5mW at 5V).
- What is the throughput rate of the MAX189BCPA?
The throughput rate is 75ksps with an external clock of 4.0MHz.
- Does the MAX189BCPA require an external reference voltage?
- What are the package options available for the MAX189BCPA?
The MAX189BCPA is available in 8-pin PDIP and 16-pin SO packages.
- What is the integral nonlinearity of the MAX189BCPA?
The integral nonlinearity is ±½ LSB.
- Is the MAX189BCPA compatible with any specific serial interfaces?
- What is the track/hold acquisition time of the MAX189BCPA?
The track/hold acquisition time is 1.5Fs.
- How does the MAX189BCPA perform in terms of AC characteristics?
- What are some typical applications for the MAX189BCPA?
