Overview
The MAX1293BEEG+T is a low-power, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device utilizes a successive-approximation (SAR) conversion technique and an input track/hold (T/H) stage to convert analog input signals to digital outputs. It operates with a single +3V analog supply and features a VLOGIC pin that allows it to interface directly with a +1.8V to +5.5V digital supply. The MAX1293 is known for its high-speed, byte-wide parallel interface, internal +2.5V reference, and software-configurable analog inputs, making it suitable for various applications requiring low power consumption and high performance.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Sampling Rate | 250 ksps |
| Analog Supply Voltage | +3V |
| Digital Supply Voltage | +1.8V to +5.5V |
| Number of Inputs | 4 (single-ended), 2 (pseudo-differential) |
| Input Type | Single-ended, pseudo-differential |
| Internal Reference | +2.5V |
| Power Consumption | 5.7 mW (at 250 ksps), < 10 µA (in power-down mode) |
| Package | 24-pin QSOP |
| Operating Temperature | 0°C to +70°C |
Key Features
- Successive-approximation ADC with track/hold stage
- Software-configurable analog inputs for unipolar/bipolar and single-ended/pseudo-differential operation
- Internal +2.5V reference and external reference option
- High-speed, byte-wide parallel interface
- Automatic power-down and fast wake-up (2 µs)
- User-adjustable logic level (+1.8V to +3.6V)
- Low power consumption: 1.9 mA (250 ksps), 1.0 mA (100 ksps), 400 µA (10 ksps), 2 µA (shutdown)
- Small footprint: 24-pin QSOP package
Applications
The MAX1293BEEG+T is ideal for battery-powered and data-acquisition applications, as well as other circuits with demanding power consumption and space requirements. It is suitable for use in various fields such as industrial automation, medical devices, and portable electronics where low power and high performance are critical.
Q & A
- What is the resolution of the MAX1293BEEG+T ADC?
The MAX1293BEEG+T has a 12-bit resolution. - What is the maximum sampling rate of the MAX1293BEEG+T?
The maximum sampling rate is 250 ksps. - What is the operating voltage range for the analog supply of the MAX1293BEEG+T?
The analog supply voltage is +3V. - Can the MAX1293BEEG+T operate with different digital supply voltages?
Yes, it can operate with digital supply voltages ranging from +1.8V to +5.5V. - How many input channels does the MAX1293BEEG+T have?
The MAX1293BEEG+T has 4 single-ended or 2 pseudo-differential input channels. - What is the power consumption of the MAX1293BEEG+T at maximum sampling rate?
The power consumption is 5.7 mW at 250 ksps. - Does the MAX1293BEEG+T have power-down modes?
Yes, it has two software-selectable power-down modes that can reduce supply current to under 10 µA. - What is the package type of the MAX1293BEEG+T?
The package type is 24-pin QSOP. - What are the operating temperature ranges for the MAX1293BEEG+T?
The operating temperature range is 0°C to +70°C. - Can the MAX1293BEEG+T use an external reference voltage?
Yes, it can use an external reference voltage by connecting the REFADJ pin to VDD to disable the internal reference.
