Overview
The MAX146BEPP is a 12-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, offering high conversion speed and low power consumption. The MAX146 operates from a single +2.7V to +3.6V supply and features software-configurable analog inputs for unipolar/bipolar and single-ended/differential operation. It is designed for direct connection to SPI, QSPI, and MICROWIRE devices without external logic, and it includes a serial strobe output for connection to TMS320-family digital signal processors.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | +2.7V to +3.6V | V |
| Number of Channels | 8 | - |
| Resolution | 12-bit | - |
| Conversion Time | 6 µs to 7.5 µs | µs |
| Full-Power Bandwidth | 1.0 MHz | MHz |
| Small-Signal Bandwidth | 2.25 MHz | MHz |
| Channel-to-Channel Crosstalk | -85 dB | dB |
| Reference Voltage | 2.480 to 2.520 V | V |
| Input Capacitance | 16 pF | pF |
| Power Dissipation | 889 mW (at TA = +70°C) | mW |
| Operating Temperature Range | -40°C to +85°C | °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 2.5V reference voltage (MAX146) with a ±1.5% voltage-adjustment range.
- Hard-wired SHDN-bar pin and software-selectable power-down mode.
- Automatic shutdown at the end of a conversion to reduce power consumption.
- Quick turn-on time, allowing shutdown between conversions.
- Available in 20-pin DIP and SSOP packages.
Applications
The MAX146BEPP is suitable for various applications requiring low power consumption and high conversion speed, such as:
- Battery-powered devices.
- Data-acquisition systems.
- Industrial control systems.
- Medical devices.
- Automotive systems.
Q & A
- What is the supply voltage range for the MAX146BEPP?
The MAX146BEPP operates from a single +2.7V to +3.6V supply.
- How many channels does the MAX146BEPP have?
The MAX146BEPP has 8 channels.
- What is the resolution of the MAX146BEPP?
The MAX146BEPP has a 12-bit resolution.
- What is the conversion time of the MAX146BEPP?
The conversion time ranges from 6 µs to 7.5 µs.
- Does the MAX146BEPP have an internal reference voltage?
Yes, the MAX146BEPP has an internal 2.5V reference voltage.
- What types of analog inputs are supported by the MAX146BEPP?
The MAX146BEPP supports software-configurable analog inputs for unipolar/bipolar and single-ended/differential operation.
- What is the power dissipation of the MAX146BEPP at +70°C?
The power dissipation is 889 mW at +70°C.
- What are the operating temperature ranges for the MAX146BEPP?
The operating temperature range is -40°C to +85°C.
- What packages are available for the MAX146BEPP?
The MAX146BEPP is available in 20-pin DIP and SSOP packages.
- Can the MAX146BEPP be powered down to reduce power consumption?
Yes, the MAX146BEPP has a hard-wired SHDN-bar pin and software-selectable power-down mode, allowing it to shut down at the end of a conversion.
