Overview
The MAX147BCAP+T is a 12-bit, low-power, 8-channel serial analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX146/MAX147 family, which combines an 8-channel multiplexer, high-bandwidth track/hold, and a serial interface. It is designed for high conversion speed and low power consumption, making it suitable for a variety of data-acquisition applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution (Bits) | 12-bit |
| Sampling Rate | 133 kSPS |
| Input Channel Type | Differential, Single Ended |
| Data Interface | SPI, QSPI, MICROWIRE |
| Supply Voltage Type | Single |
| Supply Voltage Min | 2.7V |
| Supply Voltage Max | 5.25V |
| ADC / DAC Case Style | SSOP |
| No. of Pins | 20 Pins |
| Operating Temperature Min | 0°C |
| Operating Temperature Max | 70°C |
Key Features
- Software configurable analog inputs for unipolar/bipolar and single-ended/differential operation.
- 4-wire serial interface compatible with SPI, QSPI, and MICROWIRE devices without external logic.
- Serial strobe output for direct connection to TMS320-family digital signal processors.
- Internal or external serial-interface clock for successive-approximation analog-to-digital conversions.
- External reference required (MAX147); internal 2.5V reference available on MAX146.
- Reference-buffer amplifier with ±1.5% voltage-adjustment range.
- Hard-wired SHDN-bar pin and software-selectable power-down mode.
- Quick turn-on time and low power consumption, with supply current under 60µA at reduced sampling rates.
Applications
The MAX147BCAP+T is suitable for various data-acquisition applications, including industrial control systems, medical devices, and automotive systems. Its low power consumption and high conversion speed make it ideal for battery-powered devices and systems requiring precise analog-to-digital conversion.
Q & A
- What is the resolution of the MAX147BCAP+T ADC?
The MAX147BCAP+T has a resolution of 12 bits. - What is the sampling rate of the MAX147BCAP+T?
The sampling rate is 133 kSPS. - What types of input channels does the MAX147BCAP+T support?
The device supports both differential and single-ended input channels. - What data interfaces are supported by the MAX147BCAP+T?
The device supports SPI, QSPI, and MICROWIRE interfaces. - What is the supply voltage range for the MAX147BCAP+T?
The supply voltage range is from 2.7V to 5.25V. - What is the package type of the MAX147BCAP+T?
The device is packaged in a 20-pin SSOP. - What are the operating temperature ranges for the MAX147BCAP+T?
The operating temperature range is from 0°C to 70°C. - Does the MAX147BCAP+T require an external reference voltage?
Yes, the MAX147 requires an external reference voltage. - How does the MAX147BCAP+T manage power consumption?
The device has a hard-wired SHDN-bar pin and software-selectable power-down mode, allowing it to reduce supply current to under 60µA at reduced sampling rates. - What is the purpose of the serial strobe output on the MAX147BCAP+T?
The serial strobe output allows direct connection to TMS320-family digital signal processors.
