Overview
The MAX121CAP+, produced by Analog Devices Inc./Maxim Integrated, is a high-performance, 14-bit analog-to-digital converter (ADC) designed for applications requiring fast conversion speeds and low power consumption. This BiCMOS, serial-output ADC features an on-chip track/hold circuit and a low-drift, low-noise, buried-zener voltage reference. It operates with a throughput rate of up to 308k samples per second (ksps) and supports a full-scale analog input range of ±5V.
The MAX121 utilizes a successive-approximation architecture with a high-speed DAC, enabling both fast conversion speeds and low-power operation. It is compatible with TTL- and CMOS-compatible clocks and can be directly interfaced to the serial port of most popular digital-signal processors.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 14 bits | |
| Throughput Rate | Up to 308 ksps | |
| Conversion Time | 2.9 µs | |
| Acquisition Time | 400 ns | |
| SINAD (Signal-to-Noise and Distortion Ratio) | 78 dB | |
| THD (Total Harmonic Distortion) | -85 dB | |
| Operating Supply Voltage | +5V, -12V or -15V | |
| Power Consumption | 210 mW | |
| Package Options | 16-pin DIP, SO, 20-pin SSOP | |
| Clock Frequency Range | 1.1 MHz to 5.5 MHz |
Key Features
- High-speed successive-approximation ADC architecture with a high-speed DAC.
- On-chip track/hold circuit and low-drift, low-noise, buried-zener voltage reference.
- Fast conversion speed with a throughput rate of up to 308 ksps.
- Low power consumption of 210 mW.
- TTL- and CMOS-compatible logic inputs and outputs.
- Direct interface to the serial port of most popular digital-signal processors.
- Space-saving package options including 16-pin DIP, SO, and 20-pin SSOP.
- Compatible with Motorola SPI and QSPI interface standards.
Applications
The MAX121 is suitable for a variety of applications that require high-speed and high-precision analog-to-digital conversion. These include:
- Digital signal processing systems.
- Data acquisition systems.
- Medical imaging and diagnostic equipment.
- Aerospace and defense systems.
- Industrial control and automation.
- High-speed data logging and monitoring.
Q & A
- What is the resolution of the MAX121 ADC?
The MAX121 has a resolution of 14 bits.
- What is the maximum throughput rate of the MAX121?
The MAX121 can achieve a throughput rate of up to 308 ksps.
- What is the acquisition time of the MAX121?
The acquisition time of the MAX121 is 400 ns.
- What are the operating supply voltages for the MAX121?
The MAX121 operates with +5V and -12V or -15V power supplies.
- How much power does the MAX121 consume?
The MAX121 consumes 210 mW of power.
- What package options are available for the MAX121?
The MAX121 is available in 16-pin DIP, SO, and 20-pin SSOP packages.
- Is the MAX121 compatible with TTL and CMOS logic?
- Can the MAX121 be directly interfaced to digital-signal processors?
- What is the clock frequency range for the MAX121?
The clock frequency range for the MAX121 is from 1.1 MHz to 5.5 MHz.
- What are some common applications for the MAX121?
The MAX121 is commonly used in digital signal processing systems, data acquisition systems, medical imaging, aerospace and defense systems, industrial control, and high-speed data logging.
