Overview
The MAX11905ETP+T, produced by Analog Devices Inc./Maxim Integrated, is a 20-bit, 1.6Msps, single-channel, fully differential Successive Approximation Register (SAR) Analog-to-Digital Converter (ADC). This device is renowned for its excellent static and dynamic performance, coupled with best-in-class power consumption that scales directly with throughput. The MAX11905 features internal reference buffers, a unipolar differential ±VREF input range, and operates over a wide range of supply voltages, including 3.3V for the reference buffers, 1.8V for both analog and digital core supplies, and a flexible 1.5V to 3.6V digital interface supply.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 20 bits |
| Sampling Rate | 1.6 Msps |
| Input Range | Unipolar differential ±VREF |
| Signal-to-Noise Ratio (SNR) | 98.3 dB at fIN = 10 kHz |
| Total Harmonic Distortion (THD) | -123 dB at fIN = 10 kHz |
| Integral Nonlinearity (INL) | ±6 LSB (max) |
| Differential Nonlinearity (DNL) | ±1 LSB (max) |
| Power Consumption | 9 mW at 1.6 Msps |
| Supply Voltages | 3.3V (REFVDD), 1.8V (AVDD, DVDD), 1.5V to 3.6V (OVDD) |
| 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: Provides better measurement quality with 98.3 dB SNR and -123 dB THD at fIN = 10 kHz.
- High Resolution: 20-bit resolution with no missing codes and ±6 LSB INL (max).
- High Sampling Rate: 1.6 Msps throughput with no pipeline delay.
- Integrated Reference Buffers: Simplifies design with integrated reference buffers and a ±VREF unipolar differential analog input range.
- Scalable Ultra-Low Power: Reduces power consumption with 9 mW at 1.6 Msps.
- Flexible Low-Voltage Supplies: Saves cost with 1.8V analog and digital core supplies and a 1.5V to 3.6V digital interface supply.
- Industry-Standard Serial Interface: Communicates data using a SPI-compatible serial interface.
- Compact Package: Offered in a 20-pin, 4mm x 4mm, TQFN package.
Applications
- Test and Measurement: Ideal for precision measurement instruments.
- Automatic Test Equipment: Used in automated testing systems.
- Medical Instrumentation: Suitable for medical devices requiring high accuracy.
- Process Control and Industrial Automation: Applied in industrial control systems.
- Data Acquisition Systems: Used in data acquisition and logging systems.
- Telecommunications: Employed in telecommunications equipment.
- Battery-Powered Equipment: Ideal for battery-powered devices due to low power consumption.
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 input range of the MAX11905?
The input range is unipolar differential ±VREF.
- 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 is the power consumption of the MAX11905 at 1.6 Msps?
The power consumption is 9 mW at 1.6 Msps.
- What are the supply voltages for the MAX11905?
The supply voltages include 3.3V for the reference buffers, 1.8V for both analog and digital core supplies, and a flexible 1.5V to 3.6V digital interface supply.
- What is the operating temperature range of the MAX11905?
The operating temperature range is -40°C to +85°C.
- What type of package is the MAX11905 available in?
The MAX11905 is available in a 20-pin, 4mm x 4mm, TQFN package.
- What type of serial interface does the MAX11905 use?
The MAX11905 communicates data using a SPI-compatible serial interface.
