Overview
The MAX1249BEPE is a 10-bit, 4-channel analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX1248/MAX1249 family, which combines a 4-channel multiplexer, high-bandwidth track/hold, and a serial interface. It operates from a single supply voltage of +2.7V to +5.25V, making it suitable for a variety of low-power applications. The ADC is software configurable for unipolar/bipolar and single-ended/differential input operations, enhancing its versatility in different use cases.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 10 bits |
| Number of Channels | 4 (single-ended), 2 (differential) |
| Operating Supply Voltage | +2.7V to +5.25V |
| Conversion Time | 6 µs (typical) at 133 ksps |
| Power Consumption | 1.2 mA (at 133 ksps, +3V supply), 54 µA (at 1 ksps, +3V supply), 1 µA (power-down mode) |
| Integral Nonlinearity (INL) | ±1 LSB |
| Operating Temperature Range | 0°C to +70°C (MAX1249_C_E), -40°C to +85°C (MAX1249_E_E), -55°C to +125°C (MAX1249_MJE) |
| Storage Temperature Range | -60°C to +150°C |
| Lead Temperature (soldering, 10sec) | +300°C |
Key Features
- Software configurable for unipolar/bipolar and single-ended/differential input operations
- Internal reference-buffer amplifier with ±1.5% voltage adjustment range (requires external reference for MAX1249)
- SPI/QSPI/MICROWIRE/TMS320-compatible 4-wire serial interface
- Low power consumption: 1.2 mA at 133 ksps, 54 µA at 1 ksps, and 1 µA in power-down mode
- Quick turn-on time and automatic shutdown at the end of a conversion to reduce power consumption
- Available in 16-pin DIP and QSOP packages
Applications
- Portable Data Logging
- Data Acquisition
- Medical Instruments
- Battery-Powered Instruments
- Pen Digitizers
- System Supervision
Q & A
- What is the resolution of the MAX1249BEPE ADC?
The MAX1249BEPE has a resolution of 10 bits. - What is the operating supply voltage range for the MAX1249BEPE?
The operating supply voltage range is +2.7V to +5.25V. - How many channels does the MAX1249BEPE support?
The MAX1249BEPE supports 4 single-ended or 2 differential channels. - What is the typical conversion time for the MAX1249BEPE?
The typical conversion time is 6 µs at 133 ksps. - What are the power consumption levels for the MAX1249BEPE?
The power consumption levels are 1.2 mA at 133 ksps, 54 µA at 1 ksps, and 1 µA in power-down mode. - Is the MAX1249BEPE compatible with SPI/QSPI/MICROWIRE interfaces?
Yes, the MAX1249BEPE is compatible with SPI/QSPI/MICROWIRE and TMS320 interfaces. - What are the available package types for the MAX1249BEPE?
The MAX1249BEPE is available in 16-pin DIP and QSOP packages. - What are some common applications for the MAX1249BEPE?
Common applications include portable data logging, data acquisition, medical instruments, battery-powered instruments, pen digitizers, and system supervision. - What is the operating temperature range for the MAX1249BEPE?
The operating temperature range varies by model: 0°C to +70°C (MAX1249_C_E), -40°C to +85°C (MAX1249_E_E), and -55°C to +125°C (MAX1249_MJE). - How does the MAX1249BEPE manage power consumption during idle periods?
The MAX1249BEPE can be programmed to automatically shut down at the end of a conversion, reducing power consumption to under 60 µA at reduced sampling rates.
