Overview
The MAX1285BESA+ is a 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device combines a high-bandwidth track/hold (T/H) amplifier, a serial interface with high conversion speed, and an internal +2.5V reference. It operates from a single +2.7V to +3.6V supply, making it suitable for low-power and space-constrained applications. The MAX1285BESA+ is ideal for remote-sensor and data-acquisition systems due to its low power consumption and small package size.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Supply Voltage | +2.7V to +3.6V |
| Input Voltage Range | 0 to 2.5 V |
| Conversion Time | 2.5 µs |
| Track/Hold Acquisition Time | 468 ns |
| Aperture Delay | 10 ns |
| Aperture Jitter | < 50 ps |
| Serial Clock Frequency | 0.5 to 4.8 MHz |
| Differential Nonlinearity (DNL) | ±1 LSB |
| Integral Nonlinearity (INL) | ±1 LSB |
| Signal-to-Noise Plus Distortion Ratio (SINAD) | 70 dB |
| Total Harmonic Distortion (THD) | -80 dB |
| Spurious-Free Dynamic Range (SFDR) | 80 dB |
| Full-Power Bandwidth | 6 MHz |
| Package Type | 8-pin SOIC |
Key Features
- High-bandwidth track/hold amplifier
- 3-wire serial interface compatible with SPI/QSPI/MICROWIRE devices
- Internal +2.5V reference
- Low power consumption
- Small package size (8-pin SOIC)
- High conversion speed with serial clock frequencies up to 4.8 MHz
- Low differential and integral nonlinearity (±1 LSB)
- High signal-to-noise plus distortion ratio (70 dB) and low total harmonic distortion (-80 dB)
Applications
The MAX1285BESA+ is particularly suited for remote-sensor and data-acquisition applications due to its low power consumption and compact size. It is also ideal for other circuits that have demanding power and space requirements, such as industrial control systems, medical devices, and automotive systems.
Q & A
- What is the resolution of the MAX1285BESA+ ADC?
The MAX1285BESA+ has a resolution of 12 bits.
- What is the operating supply voltage range for the MAX1285BESA+?
The MAX1285BESA+ operates from a single +2.7V to +3.6V supply.
- What is the input voltage range for the MAX1285BESA+?
The input voltage range is 0 to 2.5 V.
- How long does the conversion process take for the MAX1285BESA+?
The conversion time is 2.5 µs.
- What is the track/hold acquisition time for the MAX1285BESA+?
The track/hold acquisition time is 468 ns.
- What is the aperture delay and jitter of the MAX1285BESA+?
The aperture delay is 10 ns, and the aperture jitter is less than 50 ps.
- What is the serial clock frequency range for the MAX1285BESA+?
The serial clock frequency range is from 0.5 to 4.8 MHz.
- What are the differential and integral nonlinearity specifications for the MAX1285BESA+?
Both differential and integral nonlinearity are ±1 LSB.
- What is the signal-to-noise plus distortion ratio (SINAD) of the MAX1285BESA+?
The SINAD is 70 dB.
- What are some typical applications for the MAX1285BESA+?
Typical applications include remote-sensor and data-acquisition systems, industrial control systems, medical devices, and automotive systems.
