Overview
The MAX1240BCPA, produced by Analog Devices Inc./Maxim Integrated, is a low-power, 12-bit analog-to-digital converter (ADC) designed for applications requiring high precision and low power consumption. This ADC operates on a single supply voltage ranging from +2.7V to +3.6V and is available in an 8-pin PDIP package. It features a successive-approximation ADC with a conversion time of 7.5µs and a fast track/hold circuit with a 1.5µs acquisition time. The device is equipped with an on-chip clock and a high-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12-bit | |
| Supply Voltage | +2.7V to +3.6V | V |
| Conversion Rate | 73 ksps | samples per second |
| Conversion Time | 7.5µs | s |
| Track/Hold Acquisition Time | 1.5µs | s |
| Power Consumption (at 73ksps, VDD = 3V) | 37mW | W |
| Shutdown Current | 2µA | A |
| Interface | SPI, QSPI, MICROWIRE | |
| Package Type | 8-pin PDIP, 8-pin SO | |
| Operating Temperature Range | -40°C to 70°C | °C |
Key Features
- Single-supply operation: +2.7V to +3.6V
- Internal 2.5V reference voltage
- Low power consumption: 37mW at 73ksps, 5µW in power-down mode
- Fast track/hold circuit with 1.5µs acquisition time
- High-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE
- Small footprint: available in 8-pin PDIP and SO packages
- Shutdown mode with supply current below 10µA
Applications
- Battery-powered systems
- Portable data logging
- Isolated data acquisition
- Process control and instrumentation
- Remote sensor applications
Q & A
- What is the resolution of the MAX1240BCPA ADC?
The MAX1240BCPA has a 12-bit resolution.
- What is the supply voltage range for the MAX1240BCPA?
The supply voltage range is from +2.7V to +3.6V.
- What is the maximum conversion rate of the MAX1240BCPA?
The maximum conversion rate is 73 ksps.
- How long does the conversion process take for the MAX1240BCPA?
The conversion time is 7.5µs.
- What is the power consumption of the MAX1240BCPA at 73ksps?
The power consumption is 37mW at VDD = 3V.
- What interface protocols is the MAX1240BCPA compatible with?
The device is compatible with SPI, QSPI, and MICROWIRE protocols.
- What are the available package types for the MAX1240BCPA?
The device is available in 8-pin PDIP and SO packages.
- How does the shutdown mode affect power consumption?
In shutdown mode, the supply current is reduced below 10µA.
- What are some typical applications for the MAX1240BCPA?
Typical applications include battery-powered systems, portable data logging, isolated data acquisition, process control, and remote sensor applications.
- Is the MAX1240BCPA suitable for high-temperature environments?
The operating temperature range is from -40°C to 70°C.
