Overview
The MAX1285BESA+T from Analog Devices Inc./Maxim Integrated is a high-performance, 12-bit analog-to-digital converter (ADC) designed for applications requiring accurate signal measurement. This device combines a high-bandwidth track/hold (T/H) circuit, a successive-approximation register (SAR) circuit, and a serial interface, making it ideal for industrial and medical applications. The MAX1285 operates from a single supply voltage of +2.7V to +3.6V, ensuring low power consumption and ease of use in various circuits.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Resolution | - | - | - | 12 Bits | - |
| Relative Accuracy | - | - | - | ±1 LSB | - |
| Differential Nonlinearity (DNL) | - | - | - | ±1 LSB | - |
| Integral Nonlinearity (INL) | - | - | - | ±1 LSB | - |
| Offset Error | - | - | - | ±6 LSB | - |
| Gain Error | - | - | - | ±6 LSB | - |
| Signal-to-Noise Plus Distortion Ratio (SINAD) | 75kHz sine wave, 2.5VP-P, fSAMPLE = 300ksps, fSCLK = 4.8MHz | - | - | 70 dB | - |
| Total Harmonic Distortion (THD) | Up to the 5th harmonic | - | - | -80 dB | - |
| Spurious-Free Dynamic Range (SFDR) | - | - | - | 80 dB | - |
| Full-Power Bandwidth | -3dB point | - | - | 3 MHz | - |
| Conversion Time | - | - | - | 3.3 µs | - |
| Track/Hold Acquisition Time | - | - | - | 625 ns | - |
| Aperture Delay | - | - | - | 10 ns | - |
| Aperture Jitter | - | - | - | < 50 ps | - |
| Serial Clock Frequency | - | 0.5 MHz | - | 4.8 MHz | - |
| Operating Temperature | - | -40°C | - | +85°C | - |
| Operating Voltage | - | +2.7V | - | +3.6V | - |
| Operating Current | - | - | - | 2.5 mA | - |
| Package Type | - | - | - | SO8 | - |
Key Features
- High-Performance ADC: 12-bit resolution with ±1 LSB relative accuracy and ±1 LSB differential nonlinearity (DNL) and integral nonlinearity (INL).
- Single-Supply Operation: Operates from a single supply voltage of +2.7V to +3.6V, making it suitable for low-power applications.
- High-Speed Conversion: Sampling rate of up to 300ksps, with a conversion time of 3.3 µs and track/hold acquisition time of 625 ns.
- Internal Reference: Includes an internal +2.5V reference, simplifying system design.
- Serial Interface: 3-wire serial interface compatible with SPI™/QSPI™/MICROWIRE™ devices without external logic.
- Low Power Consumption: Low operating current of 2.5 mA, ideal for remote-sensor and data-acquisition applications.
- Compact Package: Available in an 8-pin SO package, suitable for space-constrained designs.
Applications
- Industrial Applications: Suitable for industrial environments due to its high accuracy and reliability.
- Medical Applications: Ideal for medical devices requiring precise signal measurement and low power consumption.
- Remote-Sensor Applications: Perfect for remote-sensor and data-acquisition systems where power and space are limited.
- Data-Acquisition Systems: Used in various data-acquisition systems that demand high-speed and accurate analog-to-digital conversion).
Q & A
- What is the resolution of the MAX1285BESA+T ADC?
The MAX1285BESA+T has a 12-bit resolution).
- What is the operating voltage range of the MAX1285BESA+T?
The MAX1285BESA+T operates from a single supply voltage of +2.7V to +3.6V).
- What is the sampling rate of the MAX1285BESA+T?
The MAX1285BESA+T has a sampling rate of up to 300ksps).
- Does the MAX1285BESA+T have an internal reference voltage?
Yes, the MAX1285BESA+T includes an internal +2.5V reference voltage).
- What type of package is the MAX1285BESA+T available in?
The MAX1285BESA+T is available in an 8-pin SO package).
- What is the operating temperature range of the MAX1285BESA+T?
The operating temperature range is -40°C to +85°C).
- How much current does the MAX1285BESA+T typically consume?
The MAX1285BESA+T typically consumes 2.5 mA of current).
- Is the MAX1285BESA+T compatible with SPI/QSPI/MICROWIRE interfaces?
Yes, the MAX1285BESA+T has a 3-wire serial interface compatible with SPI™/QSPI™/MICROWIRE™ devices without external logic).
- What are some common applications of the MAX1285BESA+T?
The MAX1285BESA+T is commonly used in industrial, medical, remote-sensor, and data-acquisition applications).
- What is the full-power bandwidth of the MAX1285BESA+T?
The full-power bandwidth of the MAX1285BESA+T is 3 MHz at the -3dB point).
