Overview
The MAX149ACAP+ is a 10-bit data-acquisition system produced by Analog Devices Inc./Maxim Integrated. This device combines an 8-channel multiplexer, high-bandwidth track/hold, and a serial interface, making it suitable for a variety of data-acquisition applications. It operates from a single +2.7V to +5.25V supply and can sample at rates up to 133ksps. The MAX149ACAP+ features an internal 2.5V reference and a reference-buffer amplifier, which allows for flexible voltage adjustment.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | +2.7V to +5.25V | V |
| Number of Channels | 8 | - |
| Resolution | 10-bit | - |
| Sampling Rate | Up to 133ksps | sps |
| Input Configuration | Unipolar/Bipolar, Single-Ended/Differential | - |
| Serial Interface | 4-wire SPI/QSPI/MICROWIRE compatible | - |
| Operating Temperature Range | 0°C to +70°C (MAX149_C_P), -40°C to +85°C (MAX149_E_P), -55°C to +125°C (MAX149BMAP) | °C |
| Power Consumption | 1.2mA (typical) | mA |
| Package Type | 20-pin SSOP | - |
| Signal-to-Noise + Distortion (SINAD) | 66 dB | dB |
| Total Harmonic Distortion (THD) | -70 dB | dB |
| Spurious-Free Dynamic Range (SFDR) | 70 dB | dB |
Key Features
- Single-supply operation from +2.7V to +5.25V
- Internal 2.5V reference (MAX149) and reference-buffer amplifier
- Low power consumption: 1.2mA typical
- 8-channel multiplexer with software-configurable inputs for unipolar/bipolar and single-ended/differential operation
- High-bandwidth track/hold and serial interface compatible with SPI/QSPI and MICROWIRE devices
- Serial-strobe output for direct connection to TMS320-family digital signal processors
- Hard-wired active-low SHDN pin and software-selectable power-down mode
- Quick turn-on time and automatic shutdown at the end of a conversion to reduce supply current
Applications
- Data-acquisition systems
- Battery-powered devices
- Industrial control systems
- Medical devices
- Automotive systems
- Embedded systems requiring low power and high conversion speed
Q & A
- What is the supply voltage range for the MAX149ACAP+?
The MAX149ACAP+ operates from a single +2.7V to +5.25V supply.
- How many channels does the MAX149ACAP+ have?
The MAX149ACAP+ has 8 channels.
- What is the resolution of the MAX149ACAP+?
The MAX149ACAP+ has a 10-bit resolution.
- What is the maximum sampling rate of the MAX149ACAP+?
The MAX149ACAP+ can sample at rates up to 133ksps.
- Can the input configuration of the MAX149ACAP+ be software-configured?
- What type of serial interface does the MAX149ACAP+ use?
The MAX149ACAP+ uses a 4-wire serial interface compatible with SPI/QSPI and MICROWIRE devices.
- What is the operating temperature range for the MAX149ACAP+?
The operating temperature range for the MAX149ACAP+ is 0°C to +70°C (MAX149_C_P), -40°C to +85°C (MAX149_E_P), and -55°C to +125°C (MAX149BMAP).
- How much power does the MAX149ACAP+ typically consume?
The MAX149ACAP+ typically consumes 1.2mA of power.
- What package type is the MAX149ACAP+ available in?
The MAX149ACAP+ is available in a 20-pin SSOP package.
- What are some key applications for the MAX149ACAP+?
The MAX149ACAP+ is suitable for data-acquisition systems, battery-powered devices, industrial control systems, medical devices, automotive systems, and embedded systems requiring low power and high conversion speed.
