Overview
The MAX1240AESA/V+T, 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, making it suitable for a variety of battery-powered and space-constrained systems. The MAX1240 features a successive-approximation register (SAR) architecture, which includes a fast track/hold (T/H) circuit and an on-chip clock, enabling efficient and accurate analog-to-digital conversions.
Key Specifications
| Parameter | Value |
|---|---|
| Converter Resolution | 12-bit |
| Number of Channels | 1 |
| Sampling Speed | 73ksps |
| Operating Voltage | +2.7V to +3.6V |
| Operating Current | 1.4mA |
| Operating Temperature | -40°C to +85°C |
| Relative Accuracy | 0.5LSB |
| Package Type | 8-pin SOIC |
| Mounting Type | SMD |
| Conversion Time | 9µs (including T/H acquisition time) |
| Shutdown Current | < 10µA (VDD ≤ 3.6V) |
Key Features
- Low power consumption: 37mW at 73ksps with VDD = 3V, and a shutdown mode reducing power to less than 10µA.
- Fast track/hold (T/H) circuit with 1.5µs acquisition time.
- On-chip clock and high-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE.
- Internal 2.5V reference for MAX1240; external reference required for MAX1241.
- No external hold capacitor needed for the T/H circuit.
- Small package size: available in 8-pin SOIC and PDIP packages.
Applications
The MAX1240AESA/V+T is ideal for various applications requiring low power and high accuracy, such as:
- Remote sensor systems.
- Data acquisition systems.
- Battery-powered devices.
- Space-constrained systems where power efficiency and small size are critical.
Q & A
- What is the operating voltage range of the MAX1240AESA/V+T?
The MAX1240AESA/V+T operates with a single supply voltage ranging from +2.7V to +3.6V.
- What is the resolution and sampling speed of the MAX1240AESA/V+T?
The device has a 12-bit resolution and a maximum sampling speed of 73ksps.
- Does the MAX1240AESA/V+T require an external reference voltage?
No, the MAX1240 has an internal 2.5V reference. However, the MAX1241 requires an external reference voltage).
- What is the power consumption of the MAX1240AESA/V+T at maximum sampling speed?
The power consumption is 37mW at 73ksps with VDD = 3V).
- What is the shutdown current of the MAX1240AESA/V+T?
The shutdown current is less than 10µA when VDD ≤ 3.6V).
- What type of interface does the MAX1240AESA/V+T use?
The device uses a high-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE).
- What is the conversion time of the MAX1240AESA/V+T?
The conversion time is 9µs, including T/H acquisition time).
- What are the typical applications of the MAX1240AESA/V+T?
The device is suitable for remote sensor systems, data acquisition systems, battery-powered devices, and space-constrained systems).
- What package types are available for the MAX1240AESA/V+T?
The device is available in 8-pin SOIC and PDIP packages).
- What is the operating temperature range of the MAX1240AESA/V+T?
The operating temperature range is -40°C to +85°C).
