Overview
The MAX11905 is a 20-bit, 1.6Msps, single-channel, fully differential Successive Approximation Register (SAR) Analog-to-Digital Converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This ADC is distinguished by its excellent static and dynamic performance, coupled with best-in-class power consumption that scales directly with throughput. It features internal reference buffers and a unipolar differential ±VREF input range, making it highly versatile for various applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 20 bits |
| Sampling Rate | 1.6 Msps |
| Signal-to-Noise Ratio (SNR) | 98.3 dB at fIN = 10 kHz |
| Total Harmonic Distortion (THD) | -123 dB at fIN = 10 kHz |
| Integral Non-Linearity (INL) | ±6 LSB (max) |
| Differential Non-Linearity (DNL) | ±1 LSB (max) |
| Analog Supply Voltage | 1.8 V |
| Digital Supply Voltage | 1.8 V |
| Reference Buffer Supply Voltage | 3.3 V |
| Digital Interface Supply Voltage | 1.5 V to 3.6 V |
| Operating Temperature Range | -40°C to +85°C |
| Package Type | 20-pin, 4mm x 4mm, TQFN |
| Interface | SPI-compatible serial interface |
Key Features
- High DC/AC accuracy providing better measurement quality.
- 20-bit resolution with no missing codes and ±6 LSB INL (max) and ±1 LSB DNL (max).
- High sampling rate SAR architecture enabling fast settling and acquisition at 1.6 Msps with no pipeline delay.
- Integrated reference buffers with a ±VREF unipolar differential analog input range.
- Scalable ultra-low power consumption, reducing power to 9 mW at 1.6 Msps.
- Flexible low-voltage supplies: 1.8V analog and digital core supply, and 1.5V to 3.6V digital interface supply.
- Industry-standard SPI-compatible serial interface.
- Compact 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 MAX11905 ADC?
The MAX11905 has a 20-bit resolution. - What is the sampling rate of the MAX11905?
The MAX11905 has a sampling rate of 1.6 Msps. - What is the SNR of the MAX11905 at 10 kHz input frequency?
The SNR is 98.3 dB at fIN = 10 kHz. - What is the THD of the MAX11905 at 10 kHz input frequency?
The THD is -123 dB at fIN = 10 kHz. - What are the supply voltages for the MAX11905?
The supply voltages include 1.8V for analog and digital core, 3.3V for reference buffers, and 1.5V to 3.6V for the digital interface. - What is the operating temperature range of the MAX11905?
The operating temperature range is -40°C to +85°C. - What type of package does the MAX11905 come in?
The MAX11905 is offered in a 20-pin, 4mm x 4mm, TQFN package. - What interface does the MAX11905 use for data communication?
The MAX11905 uses a SPI-compatible serial interface. - What are some of the key applications of the MAX11905?
Key applications include Test and Measurement, Automatic Test Equipment, Medical Instrumentation, Process Control and Industrial Automation, Data Acquisition Systems, Telecommunications, and Battery-Powered Equipment. - How much power does the MAX11905 consume at 1.6 Msps?
The MAX11905 consumes 9 mW at 1.6 Msps.
