Overview
The MAX189BC/D is a part of the MAX187/MAX189 family of serial 12-bit analog-to-digital converters (ADCs) produced by Analog Devices Inc./Maxim Integrated. These ADCs operate from a single +5V supply and are designed to accept analog input voltages ranging from 0 to 5V. They feature a successive-approximation conversion technique and include an on-chip clock and a high-speed 3-wire serial interface, making them suitable for a variety of data acquisition applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Resolution | 12 | Bits | |||
| Relative Accuracy | ±0.5 | ±1 | LSB | ||
| Differential Nonlinearity (DNL) | ±0.5 | ±1 | LSB | ||
| Offset Error | ±1.5 | ±3 | LSB | ||
| Gain Error | ±3 | ±3 | LSB | ||
| Signal-to-Noise Plus Distortion Ratio (SINAD) | 10kHz Sine Wave Input, 0 to 4.096V P-P, 75ksps | 70 | dB | ||
| Total Harmonic Distortion (THD) | 10kHz Sine Wave Input, 0 to 4.096V P-P, 75ksps | -80 | dB | ||
| Spurious-Free Dynamic Range (SFDR) | 10kHz Sine Wave Input, 0 to 4.096V P-P, 75ksps | 80 | dB | ||
| Conversion Time (tCONV) | External clock, 4MHz, 13 clocks | 5.5 | 8.5 | µs | |
| Track/Hold Acquisition Time (tACQ) | CS = high | 1.5 | µs | ||
| Throughput Rate | External clock, 4MHz, 13 clocks | 75 | ksps | ||
| Supply Voltage (VDD) | 4.75 | 5.25 | V | ||
| Supply Current (IDD) | Operating mode | 1.0 | 2.0 | mA | |
| Power-down mode | 2 | 10 | µA |
Key Features
- Successive-Approximation Conversion Technique: Ensures high accuracy and reliability in analog-to-digital conversion.
- Single +5V Supply: Simplifies power supply requirements.
- High-Speed 3-Wire Serial Interface: Facilitates easy communication with microprocessors.
- On-Chip Clock: Reduces the need for external clock components.
- Fast Track/Hold (1.5µs): Enables quick acquisition of analog signals.
- Internal or External Reference Option: Allows flexibility in setting the analog voltage range.
- Low Power Consumption: Ideal for battery-powered and power-sensitive applications.
Applications
- Data Acquisition Systems: Suitable for various data acquisition applications where high accuracy and low power consumption are required.
- Industrial Automation: Used in industrial control systems, sensors, and monitoring equipment.
- Medical Devices: Applicable in medical equipment that requires precise analog-to-digital conversion.
- Aerospace and Defense: Employed in systems that demand high reliability and accuracy.
- Consumer Electronics: Found in consumer devices that require efficient and accurate analog-to-digital conversion.
Q & A
- What is the resolution of the MAX189BC/D ADC?
The MAX189BC/D has a resolution of 12 bits.
- What is the operating supply voltage range for the MAX189BC/D?
The operating supply voltage range is from 4.75V to 5.25V.
- What is the typical throughput rate of the MAX189BC/D?
The typical throughput rate is 75 ksps with an external clock of 4MHz.
- Does the MAX189BC/D support both internal and external reference options?
Yes, it supports both internal and external reference options.
- What is the track/hold acquisition time for the MAX189BC/D?
The track/hold acquisition time is 1.5 µs.
- How does the MAX189BC/D interface with microprocessors?
The MAX189BC/D interfaces with microprocessors through a high-speed 3-wire serial interface.
- What is the typical supply current in operating mode for the MAX189BC/D?
The typical supply current in operating mode is 2.0 mA.
- What is the power-down mode current for the MAX189BC/D?
The power-down mode current is typically 2 µA to 10 µA.
- What are the key applications of the MAX189BC/D?
The MAX189BC/D is used in data acquisition systems, industrial automation, medical devices, aerospace and defense, and consumer electronics.
- Is an evaluation kit available for the MAX189BC/D?
Yes, an evaluation kit is available for the MAX187/MAX189 family, which includes the MAX189BC/D.
