Overview
The MAX1287EKA/GG8 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, known for their excellent dynamic performance, low power consumption, and small package size. The MAX1287 is particularly suited for portable battery-powered data-acquisition applications and other scenarios where minimal space and low power are critical.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Resolution | - | - | - | 12-bit | - | - |
| Sampling Rate | fS | - | - | 150ksps | - | - |
| Supply Voltage | VDD | - | 2.7V | 3.0V | 3.6V | V |
| Input Voltage Range (Unipolar) | VIN | - | 0V | - | VREF | V |
| Power Consumption at 150ksps | - | - | - | 245µA | - | A |
| Shutdown Current | - | - | - | 0.2µA | - | A |
| Serial Clock Frequency | fSCLK | - | - | 8MHz | - | Hz |
| Package Type | - | - | - | 8-Pin SOT23, 8-Pin TDFN | - | - |
Key Features
- Single-supply operation: +3V (MAX1287)
- AutoShutdown™ between conversions to reduce power consumption
- True-differential track/hold (for MAX1288/MAX1289), single-ended for MAX1286/MAX1287
- 150kHz sampling rate
- Software-configurable unipolar/bipolar conversion (for MAX1288/MAX1289)
- SPI™-/QSPI™-/MICROWIRE™-compatible serial interface
- Internal conversion clock
- Small package size: 8-pin SOT23 and 8-pin TDFN
Applications
- Low-power data acquisition
- Portable battery-powered devices
- Temperature monitors
- Flowmeters
- Touch screens
Q & A
- What is the resolution of the MAX1287 ADC?
The MAX1287 has a 12-bit resolution.
- What are the typical supply voltage ranges for the MAX1287?
The supply voltage range for the MAX1287 is from 2.7V to 3.6V.
- What is the maximum sampling rate of the MAX1287?
The maximum sampling rate is 150ksps.
- Does the MAX1287 support true-differential inputs?
No, the MAX1287 supports single-ended inputs. True-differential inputs are supported by the MAX1288 and MAX1289 models.
- What is the power consumption of the MAX1287 at 150ksps?
The power consumption at 150ksps is typically 245µA.
- What is the shutdown current of the MAX1287?
The shutdown current is 0.2µA.
- What type of serial interface does the MAX1287 use?
The MAX1287 uses an SPI™-/QSPI™-/MICROWIRE™-compatible serial interface.
- What are the package options for the MAX1287?
The MAX1287 is available in 8-pin SOT23 and 8-pin TDFN packages.
- What are some common applications for the MAX1287?
Common applications include low-power data acquisition, portable battery-powered devices, temperature monitors, flowmeters, and touch screens.
- How does the AutoShutdown feature benefit the MAX1287?
The AutoShutdown feature reduces power consumption between conversions, making it ideal for battery-powered applications.
