Overview
The MAX1241, produced by Analog Devices Inc./Maxim Integrated, is a low-power, 12-bit analog-to-digital converter (ADC) available in an 8-pin package. This device operates with a single supply voltage ranging from +2.7V to +5.25V, making it suitable for a variety of applications where power efficiency and compact design are crucial.
The MAX1241 features a successive-approximation ADC with a conversion time of 7.5µs and a fast track/hold time of 1.5µs. It also includes an on-chip clock and a high-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols. This interface allows for easy connection to standard microcontroller I/O ports.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Supply Voltage | +2.7V to +5.25V |
| Conversion Time | 7.5µs |
| Track/Hold Time | 1.5µs |
| Sampling Rate | Up to 73ksps |
| Power Consumption | 37mW at 73ksps (VDD = 3V) |
| Shutdown Current | < 10µA (VDD ≤ 3.6V) |
| Reference Voltage | External reference required |
| Package Type | 8-pin PDIP and SO packages |
Key Features
- Low power consumption with 37mW at 73ksps and less than 10µA in shutdown mode.
- High-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols.
- Fast track/hold time of 1.5µs and conversion time of 7.5µs.
- On-chip clock and no external hold capacitor required for the track/hold circuitry.
- External reference input with a range that includes the positive supply rail.
- Small package size in 8-pin PDIP and SO packages.
Applications
The MAX1241 is ideal for various applications requiring low power consumption and compact design, such as:
- Remote sensor applications.
- Data acquisition systems.
- Circuits with demanding power and space requirements.
- Industrial control systems.
- Medical devices.
Q & A
- What is the resolution of the MAX1241 ADC?
The MAX1241 has a resolution of 12 bits.
- What is the operating supply voltage range for the MAX1241?
The MAX1241 operates with a single supply voltage ranging from +2.7V to +5.25V.
- What is the conversion time of the MAX1241?
The conversion time of the MAX1241 is 7.5µs.
- Does the MAX1241 require an external clock?
No, the MAX1241 has an on-chip clock, but an external clock can be used to access data from the 3-wire interface.
- What is the power consumption of the MAX1241 at maximum sampling speed?
The power consumption is 37mW at 73ksps when VDD = 3V.
- How does the MAX1241 reduce power consumption in shutdown mode?
In shutdown mode, the supply current is reduced to below 10µA (VDD ≤ 3.6V).
- What type of reference voltage does the MAX1241 require?
The MAX1241 requires an external reference voltage.
- What is the package type of the MAX1241?
The MAX1241 is available in 8-pin PDIP and SO packages.
- Is the MAX1241 compatible with standard microcontroller I/O ports?
- What are some typical applications of the MAX1241?
The MAX1241 is typically used in remote sensor applications, data acquisition systems, and other circuits with demanding power and space requirements.
