Overview
The MAX1249AEPE+ is a 10-bit data-acquisition system produced by Analog Devices Inc./Maxim Integrated. This device combines a 4-channel multiplexer, high-bandwidth track/hold, and a serial interface, making it suitable for various applications requiring high conversion speed and low power consumption. It operates from a single supply voltage of +2.7V to +5.25V and supports both unipolar and bipolar, as well as single-ended and differential analog input configurations. The MAX1249AEPE+ is particularly useful in systems that require efficient power management, as it can be programmed to automatically shut down at the end of a conversion, significantly reducing power consumption.
Key Specifications
| Specification | Value |
|---|---|
| Number of Converters | 1 Converter |
| Operating Supply Voltage | +2.7V to +5.25V |
| Resolution | 10-bit |
| Number of Channels | 4 (single-ended) or 2 (differential) |
| Conversion Time | 6 µs (typical) |
| Full-Power Bandwidth | 1.0 MHz |
| Small-Signal Bandwidth | 2.25 MHz |
| Channel-to-Channel Crosstalk | -75 dB |
| SFDR (Spurious-Free Dynamic Range) | -70 dB |
| THD (Total Harmonic Distortion) | -66 dB |
| SINAD (Signal-to-Noise + Distortion Ratio) | 66 dB |
| Power Dissipation | 842 mW |
| Operating Temperature Range | -40°C to +85°C |
| Package Type | 16-PDIP |
Key Features
- 4-channel single-ended or 2-channel differential inputs
- Single +2.7V to +5.25V operation
- External reference required (MAX1249)
- Low power consumption: 1.2mA (133ksps, +3V supply), 54µA (1ksps, +3V supply), 1µA (power-down mode)
- SPI/QSPI/MICROWIRE/TMS320-compatible 4-wire serial interface
- Hard-wired SHDN pin and software-selectable power-down
- Quick turn-on time and automatic shutdown at the end of a conversion
- Reference-buffer amplifier with ±1.5% voltage adjustment range
Applications
- Portable Data Logging
- Data Acquisition
- Medical Instruments
- Battery-Powered Instruments
- Pen Digitizers
- System Supervision
Q & A
- What is the operating supply voltage range of the MAX1249AEPE+?
The MAX1249AEPE+ operates from a single supply voltage of +2.7V to +5.25V.
- How many channels does the MAX1249AEPE+ support?
The device supports 4 single-ended channels or 2 differential channels.
- What is the resolution of the MAX1249AEPE+?
The MAX1249AEPE+ has a 10-bit resolution.
- What type of serial interface does the MAX1249AEPE+ use?
The device uses a SPI/QSPI/MICROWIRE/TMS320-compatible 4-wire serial interface.
- How does the MAX1249AEPE+ manage power consumption?
The device can be programmed to automatically shut down at the end of a conversion, and it has a hard-wired SHDN pin and software-selectable power-down, reducing power consumption to as low as 1µA in power-down mode.
- What is the typical conversion time of the MAX1249AEPE+?
The typical conversion time is 6 µs.
- What are the operating temperature ranges for the MAX1249AEPE+?
The operating temperature range is -40°C to +85°C.
- What type of package is the MAX1249AEPE+ available in?
The device is available in a 16-PDIP package.
- Does the MAX1249AEPE+ require an external reference voltage?
Yes, the MAX1249AEPE+ requires an external reference voltage.
- What are some common applications of the MAX1249AEPE+?
Common applications include portable data logging, data acquisition, medical instruments, battery-powered instruments, pen digitizers, and system supervision.
