Overview
The MAX1293ACEG+ is a low-power, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX1291/MAX1293 series, known for its high performance, low power consumption, and compact design. The MAX1293 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. It is ideal for battery-powered and data-acquisition applications due to its excellent dynamic performance and low power requirements.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sampling Rate | Up to 250 ksps |
| Analog Supply Voltage | +3V |
| Digital Supply Voltage (VLOGIC) | +1.8V to +5.5V |
| Reference Voltage | Internal +2.5V, External option available |
| Power Consumption (at 250 ksps) | 5.7 mW (VDD = VLOGIC) |
| Power-Down Current | Under 10 µA at reduced sampling rates |
| Input Channels | 4 single-ended / 2 pseudo-differential |
| Interface | Byte-wide parallel (8 + 4) |
| Package | 24-pin QSOP |
Key Features
- Successive-approximation (SAR) conversion technique
- Automatic power-down and fast wake-up (2 µs)
- On-chip clock and internal +2.5V reference
- Software-configurable analog inputs for unipolar/bipolar and single-ended/pseudo-differential operation
- User-adjustable logic level (+1.8V to +3.6V)
- High-speed, byte-wide parallel interface
- Low power consumption with two software-selectable power-down modes
- Small footprint in a 24-pin QSOP package
Applications
The MAX1293ACEG+ is suitable for a variety of applications, including:
- Battery-powered devices due to its low power consumption
- Data-acquisition systems requiring high dynamic performance and low power
- Circuits with demanding power consumption and space requirements
Q & A
- What is the resolution of the MAX1293ACEG+ ADC?
The MAX1293ACEG+ has a 12-bit resolution.
- What is the maximum sampling rate of the MAX1293ACEG+?
The maximum sampling rate is up to 250 ksps.
- What are the power supply requirements for the MAX1293ACEG+?
The device operates with a single +3V analog supply and a +1.8V to +5.5V digital supply (VLOGIC).
- How does the MAX1293ACEG+ manage power consumption?
The device features automatic power-down and fast wake-up, with power consumption as low as 5.7 mW at 250 ksps and under 10 µA in power-down mode.
- What types of analog inputs are supported by the MAX1293ACEG+?
The device supports software-configurable analog inputs for unipolar/bipolar and single-ended/pseudo-differential operation.
- What is the interface type of the MAX1293ACEG+?
The device uses a high-speed, byte-wide parallel interface.
- In what package is the MAX1293ACEG+ available?
The device is available in a 24-pin QSOP package.
- What are some typical applications for the MAX1293ACEG+?
Typical applications include battery-powered devices, data-acquisition systems, and circuits with demanding power and space requirements.
- Can the MAX1293ACEG+ use an external reference voltage?
Yes, the device can use an external reference voltage in addition to its internal +2.5V reference.
- How does the MAX1293ACEG+ handle power-down between conversions?
The device can be shut down between conversions, reducing supply current to under 10 µA at reduced sampling rates.
