Overview
The MAX1240BEPA+, produced by Analog Devices Inc./Maxim Integrated, is a low-power, 12-bit analog-to-digital converter (ADC) designed for high precision and low power consumption. This device is available in an 8-pin package and operates with a single supply voltage ranging from +2.7V to +3.6V. It features a successive-approximation ADC with a conversion time of 7.5µs and a fast track/hold time of 1.5µs. The MAX1240 also includes 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 | - |
| Conversion Time | - | 7.5 | - | µs | - |
| Track/Hold Time | - | 1.5 | - | µs | - |
| Sampling Rate | - | 73 | - | ksps | - |
| Power Consumption | - | 37 | - | mW | VDD = 3V, 73ksps |
| Shutdown Current | - | 2 | - | µA | - |
| Reference Voltage (Internal) | - | 2.5 | - | V | - |
Key Features
- Low power consumption: 37mW at 73ksps with VDD = 3V and 2µA in shutdown mode.
- High-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE.
- Internal 2.5V reference voltage for MAX1240.
- Fast track/hold time of 1.5µs and conversion time of 7.5µs.
- Small package size: available in 8-pin PDIP and SO packages.
Applications
The MAX1240 is ideal for remote-sensor and data-acquisition applications, as well as other circuits with demanding power consumption and space requirements. It is particularly suited for:
- Remote sensing systems.
- Data acquisition systems.
- Low-power and space-constrained designs.
Q & A
- What is the supply voltage range for the MAX1240?
The MAX1240 operates with a single supply voltage ranging from +2.7V to +3.6V. - What is the conversion time of the MAX1240?
The conversion time is 7.5µs. - What is the track/hold time of the MAX1240?
The track/hold time is 1.5µs. - What is the maximum sampling rate of the MAX1240?
The maximum sampling rate is 73ksps. - How much power does the MAX1240 consume at maximum sampling rate?
The power consumption is 37mW at VDD = 3V and 73ksps. - What is the shutdown current of the MAX1240?
The shutdown current is 2µA. - Does the MAX1240 have an internal reference voltage?
Yes, the MAX1240 has an internal 2.5V reference voltage. - What serial interfaces is the MAX1240 compatible with?
The MAX1240 is compatible with SPI, QSPI, and MICROWIRE interfaces. - In what package types is the MAX1240 available?
The MAX1240 is available in 8-pin PDIP and SO packages. - What are some typical applications for the MAX1240?
Typical applications include remote-sensor and data-acquisition systems, as well as other low-power and space-constrained designs.
