Overview
The MAX1287EKA-T is a low-cost, micropower, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX1286–MAX1289 family and is available in compact 8-pin SOT23 and 8-pin TDFN packages. It is designed for applications requiring low power consumption and minimal space, making it ideal for portable battery-powered data-acquisition systems and other low-power applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sampling Rate | Up to 150 ksps |
| Supply Voltage | +2.7V to +3.6V |
| Power Consumption | 245 µA at 150 ksps, 150 µA at 100 ksps, 15 µA at 10 ksps, 2 µA at 1 ksps, 0.2 µA in shutdown |
| Interface | SPI-/QSPI-/MICROWIRE-compatible |
| Input Range | Set by external reference voltage |
| Dynamic Performance | SINAD: 70 dB, THD: -82 dB, SFDR: 86 dB |
| Package | 8-pin SOT23 and 8-pin TDFN |
Key Features
- Single-supply operation: +2.7V to +3.6V
- Autoshutdown between conversions to reduce power consumption
- True-differential track/hold with a 150 kHz sampling rate
- Software-configurable unipolar/bipolar conversion (for MAX1288/MAX1289 only)
- SPI-/QSPI-/MICROWIRE-compatible interface for easy integration with DSPs and processors
- Internal conversion clock
- Compact 8-pin SOT23 and 8-pin TDFN packages
Applications
- Low-power data acquisition systems
- Portable battery-powered devices
- Temperature monitors
- Flowmeters
- Touch screens
Q & A
- What is the resolution of the MAX1287EKA-T ADC?
The MAX1287EKA-T has a 12-bit resolution.
- What are the available sampling rates for the MAX1287EKA-T?
The MAX1287EKA-T supports sampling rates up to 150 ksps.
- What is the typical power consumption of the MAX1287EKA-T at 150 ksps?
The typical power consumption at 150 ksps is 245 µA.
- What interface does the MAX1287EKA-T use for communication?
The MAX1287EKA-T uses an SPI-/QSPI-/MICROWIRE-compatible interface.
- How is the input range set for the MAX1287EKA-T?
The input range is set by an external reference voltage.
- What are the dynamic performance specifications of the MAX1287EKA-T?
The dynamic performance includes SINAD of 70 dB, THD of -82 dB, and SFDR of 86 dB.
- In what packages is the MAX1287EKA-T available?
The MAX1287EKA-T is available in 8-pin SOT23 and 8-pin TDFN packages.
- Does the MAX1287EKA-T support unipolar and bipolar conversions?
No, the MAX1287 does not support software-configurable unipolar/bipolar conversion; this feature is available only in the MAX1288 and MAX1289 models.
- What are some typical applications for the MAX1287EKA-T?
Typical applications include low-power data acquisition systems, portable battery-powered devices, temperature monitors, flowmeters, and touch screens.
- How does the MAX1287EKA-T manage power consumption during idle periods?
The MAX1287EKA-T features autoshutdown between conversions to reduce power consumption.
