Overview
The MAX1240ACPA, produced by Analog Devices Inc./Maxim Integrated, is a low-power, 12-bit analog-to-digital converter (ADC) designed for high-performance and low-power applications. This device operates with a single supply voltage ranging from +2.7V to +3.6V and is available in an 8-pin SO package. The MAX1240 is part of the MAX1240/MAX1241 family, which is known for its fast track/hold and successive-approximation ADC architecture, making it suitable for various data acquisition and remote-sensor applications.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12 bits |
| Supply Voltage | +2.7V to +3.6V |
| Sampling Rate | Up to 73ksps |
| Conversion Time | 7.5µs (including track/hold acquisition time) |
| Track/Hold Acquisition Time | 1.5µs |
| Power Consumption | 37mW (VDD = 3V, fSAMPLE = 73ksps) |
| Shutdown Current | Below 10µA (VDD ≤ 3.6V) |
| Reference Voltage | Internal 2.5V reference |
| Interface | 3-wire serial interface (compatible with SPI, QSPI, MICROWIRE) |
| Package Type | 8-pin SO |
Key Features
- Low power consumption with a maximum of 37mW at 73ksps sampling rate.
- Fast track/hold and successive-approximation ADC architecture.
- Internal 2.5V reference voltage.
- High-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE.
- Shutdown mode reducing power consumption to below 10µA.
- No external hold capacitor required for the track/hold circuitry.
Applications
The MAX1240ACPA is ideal for various applications requiring low power and high performance, such as:
- Remote-sensor applications.
- Data-acquisition systems.
- Circuits with demanding power consumption and space requirements.
Q & A
- What is the resolution of the MAX1240ACPA ADC?
The MAX1240ACPA has a resolution of 12 bits. - What is the operating supply voltage range for the MAX1240ACPA?
The operating supply voltage range is from +2.7V to +3.6V. - What is the maximum sampling rate of the MAX1240ACPA?
The maximum sampling rate is up to 73ksps. - How long does the conversion process take for the MAX1240ACPA?
The conversion time, including track/hold acquisition, is 7.5µs. - What is the track/hold acquisition time for the MAX1240ACPA?
The track/hold acquisition time is 1.5µs. - What is the power consumption of the MAX1240ACPA at maximum sampling rate?
The power consumption is 37mW at VDD = 3V and fSAMPLE = 73ksps. - How much current does the MAX1240ACPA consume in shutdown mode?
In shutdown mode, the current is below 10µA (VDD ≤ 3.6V). - Does the MAX1240ACPA require an external reference voltage?
No, the MAX1240ACPA has an internal 2.5V reference voltage. - What type of interface does the MAX1240ACPA use?
The MAX1240ACPA uses a high-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE. - In what package type is the MAX1240ACPA available?
The MAX1240ACPA is available in an 8-pin SO package.
