Overview
The MAX120CWG+T, produced by Analog Devices Inc./Maxim Integrated, is a high-performance, 12-bit analog-to-digital converter (ADC) designed for various high-speed data acquisition applications. This BiCMOS, sampling ADC integrates an on-chip track/hold (T/H) circuit and a low-drift voltage reference, ensuring fast conversion speeds and low power consumption. The device is part of the MAX120/MAX122 family, known for its robust specifications and versatility in digital signal processing, audio and telecom processing, and other demanding applications.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Resolution | 12 bits | |
| Conversion Time | 1.6 µs (MAX120), 2.6 µs (MAX122) | |
| Throughput Rate | Up to 500 ksps (MAX120), up to 333 ksps (MAX122) | |
| Analog Input Voltage Range | -5V to +5V | |
| Clock Frequency Range | 0.1 MHz to 8 MHz (MAX120), 0.1 MHz to 5 MHz (MAX122) | |
| Power Supply Voltage | Analog: -10.8V to 15.75V, Digital: 5V | |
| Operating Temperature | 0°C to 70°C | |
| Package | 24-SOIC (0.295 in) | |
| Signal-to-Noise Plus Distortion (SINAD) | 70 dB (min) | At 100 kHz input frequency |
| Total Harmonic Distortion (THD) | -77 dB (max) | At 100 kHz input frequency |
| Power Dissipation | 210 mW |
Key Features
- 12-Bit Resolution: Ensures high accuracy in analog-to-digital conversion.
- No Missing Codes Over Temperature: Maintains data integrity across the operating temperature range.
- Low-Drift Voltage Reference: Provides a stable reference voltage, crucial for precise conversions.
- Fast Conversion Times: 1.6 µs for MAX120 and 2.6 µs for MAX122, enabling high throughput rates.
- Low Noise and Distortion: High SINAD and low THD ensure high-quality digital output.
- Low Power Dissipation: 210 mW, making it suitable for power-sensitive applications.
- Separate Track/Hold Control Input: Allows for precise control over the track/hold function.
- TTL/CMOS Compatible Logic Inputs and Outputs: Easy integration with various microprocessors and digital systems.
- Direct Interface to FIFO Buffer: Reduces microprocessor interrupt overhead, enhancing system efficiency.
Applications
- Digital Signal Processing: Ideal for high-speed data acquisition and processing.
- Audio and Telecom Processing: Suitable for applications requiring high fidelity and low distortion.
- Speech Recognition and Synthesis: Used in systems that require accurate and fast conversion of analog signals.
- High-Speed Data Acquisition: Perfect for applications needing rapid and precise data conversion.
- Spectrum Analysis: Utilized in systems that analyze signal spectra, requiring high resolution and speed.
- Data Logging Systems: Used in systems that log data over time, benefiting from the ADC's accuracy and speed.
Q & A
- What is the resolution of the MAX120CWG+T ADC?
The MAX120CWG+T has a 12-bit resolution.
- What are the conversion times for the MAX120 and MAX122?
The MAX120 has a conversion time of 1.6 µs, while the MAX122 has a conversion time of 2.6 µs.
- What is the throughput rate of the MAX120 and MAX122?
The MAX120 can achieve up to 500 ksps, and the MAX122 can achieve up to 333 ksps.
- What is the analog input voltage range for the MAX120/MAX122?
The analog input voltage range is from -5V to +5V.
- What are the clock frequency ranges for the MAX120 and MAX122?
The MAX120 operates with clock frequencies from 0.1 MHz to 8 MHz, while the MAX122 operates from 0.1 MHz to 5 MHz.
- What is the power supply voltage range for the MAX120CWG+T?
The analog supply voltage range is -10.8V to 15.75V, and the digital supply voltage is 5V.
- What is the operating temperature range for the MAX120CWG+T?
The operating temperature range is from 0°C to 70°C.
- What package type is the MAX120CWG+T available in?
The MAX120CWG+T is available in a 24-SOIC (0.295 in) package.
- What are the SINAD and THD specifications for the MAX120/MAX122?
The SINAD is 70 dB (min), and the THD is -77 dB (max) at 100 kHz input frequency.
- Can the MAX120/MAX122 interface directly with a FIFO buffer?
Yes, the MAX120/MAX122 can interface directly with a FIFO buffer, reducing microprocessor interrupt overhead.
