Overview
The MAX11904ETP+T is a 20-bit, 1Msps (mega-samples per second), single-channel, fully differential Successive Approximation Register (SAR) Analog-to-Digital Converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is renowned for its excellent static and dynamic performance, coupled with best-in-class power consumption that scales directly with throughput. The MAX11904 is designed to provide high DC/AC accuracy, making it suitable for a variety of precision measurement applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 20 bits |
| Sampling Rate | 1 Msps |
| Input Range | Unipolar differential ±VREF |
| Power Supplies | 3.3V (reference buffers), 1.8V (analog), 1.8V (digital), 1.5V to 3.6V (digital interface) |
| SNR | 99.2 dB at fIN = 10 kHz |
| THD | -123 dB at fIN = 10 kHz |
| INL | ±6 LSB (max) |
| DNL | ±0.9 LSB (max) |
| Power Consumption | 6.7 mW at 1 Msps, scalable as 6.7 µW/ksps |
| Package | 20-pin, 4mm x 4mm TQFN |
| Operating Temperature Range | -40°C to +85°C |
Key Features
- High DC/AC Accuracy: Provides better measurement quality with 20-bit resolution, no missing codes, and ±6 LSB INL (max) and ±0.9 LSB DNL (max).
- High Sampling Rate SAR Architecture: Enables fast settling and acquisition with 1 Msps throughput and no pipeline delay.
- Integration Simplifies Design: Includes integrated reference buffers and a ±VREF unipolar differential analog input range.
- Scalable Ultra-Low Power Supply: Reduces power consumption, scaling as 6.7 µW/ksps.
- Flexible Low-Voltage Supplies: Saves cost with 1.8V analog and digital core supply, and a 1.5V to 3.6V digital interface supply.
- Flexible, Industry-Standard Serial Interface: Uses SPI-compatible serial interface and is available in a small 20-pin, 4mm x 4mm TQFN package.
Applications
- Test and Measurement
- Automatic Test Equipment
- Medical Instrumentation
- Process Control and Industrial Automation
- Data Acquisition Systems
- Telecommunications
- Battery-Powered Equipment
Q & A
- What is the resolution of the MAX11904 ADC?
The MAX11904 ADC has a resolution of 20 bits.
- What is the sampling rate of the MAX11904?
The MAX11904 has a sampling rate of 1 Msps.
- What are the power supply requirements for the MAX11904?
The MAX11904 requires a 3.3V supply for the reference buffers, 1.8V for the analog and digital core, and a 1.5V to 3.6V digital interface supply.
- What is the SNR and THD of the MAX11904 at 10 kHz input frequency?
The MAX11904 achieves 99.2 dB SNR and -123 dB THD at an input frequency of 10 kHz.
- What is the package type and size of the MAX11904?
The MAX11904 is available in a 20-pin, 4mm x 4mm TQFN package.
- What is the operating temperature range of the MAX11904?
The MAX11904 operates over a temperature range of -40°C to +85°C.
- What kind of serial interface does the MAX11904 use?
The MAX11904 uses a SPI-compatible serial interface.
- What are some typical applications of the MAX11904?
The MAX11904 is used in test and measurement, automatic test equipment, medical instrumentation, process control and industrial automation, data acquisition systems, telecommunications, and battery-powered equipment.
- Does the MAX11904 have integrated reference buffers?
Yes, the MAX11904 includes integrated reference buffers.
- How does the power consumption of the MAX11904 scale with throughput?
The power consumption of the MAX11904 scales directly with throughput, with 6.7 mW at 1 Msps and scaling as 6.7 µW/ksps.
