Overview
The MAX1240BCSA+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 and is available in an 8-pin SOIC package. The MAX1240 features a successive-approximation ADC with a fast track/hold circuit, an on-chip clock, and a high-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols.
Key Specifications
| Parameter | Min | Typ | Max | Units | Conditions |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | 2.7 | - | 3.6 | V | - |
| Supply Current (IDD) | 1.4 | 1.9 | 3.5 | mA | VDD = 3.6V, fSAMPLE = 73ksps |
| Power Consumption | - | 37 | - | mW | VDD = 3V, fSAMPLE = 73ksps |
| Shutdown Current | - | 2 | - | µA | Power-down mode |
| Conversion Time | - | 7.5 | - | µs | - |
| Track/Hold Acquisition Time | - | 1.5 | - | µs | - |
| Integral Nonlinearity (INL) | - | ±1 | - | LSB | - |
Key Features
- Low power consumption: 37mW at 73ksps sampling speed and 2µA in shutdown mode.
- High-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols.
- Fast track/hold circuit with 1.5µs acquisition time.
- On-chip clock and no external hold capacitor required.
- Internal 2.5V reference voltage for MAX1240; external reference required for MAX1241.
- Small 8-pin SOIC package.
Applications
The MAX1240BCSA+T is ideal for various applications requiring low power and high performance, such as:
- Remote sensor systems.
- Data acquisition systems.
- Circuits with stringent power consumption and space requirements.
Q & A
- What is the supply voltage range for the MAX1240BCSA+T? The supply voltage range is from +2.7V to +3.6V.
- What is the maximum sampling speed of the MAX1240BCSA+T? The maximum sampling speed is 73ksps.
- What is the power consumption at the maximum sampling speed? The power consumption is 37mW at VDD = 3V and 73ksps sampling speed.
- Does the MAX1240BCSA+T have an internal reference voltage? Yes, the MAX1240 has an internal 2.5V reference voltage.
- What is the track/hold acquisition time of the MAX1240BCSA+T? The track/hold acquisition time is 1.5µs.
- Is the MAX1240BCSA+T compatible with any specific serial interfaces? Yes, it is compatible with SPI, QSPI, and MICROWIRE protocols.
- What is the shutdown current of the MAX1240BCSA+T? The shutdown current is 2µA.
- In what package is the MAX1240BCSA+T available? It is available in an 8-pin SOIC package.
- What are some typical applications for the MAX1240BCSA+T? Typical applications include remote sensor systems, data acquisition systems, and circuits with stringent power consumption and space requirements.
- Does the MAX1240BCSA+T require an external clock? Yes, an external clock is required to access data from the 3-wire interface.
