Overview
The MAX148ACAP+T is a 10-bit data-acquisition system produced by Analog Devices Inc./Maxim Integrated. This device combines an 8-channel multiplexer, a high-bandwidth track/hold circuit, and a serial interface, making it suitable for a variety of data-acquisition applications. It operates from a single supply voltage of +2.7V to +5.25V and is known for its high conversion speed and low power consumption.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | 2.7 | 5.25 | V | ||
| Conversion Rate | 133 | ksps | |||
| Resolution | 10 | bits | |||
| Number of Channels | 8 | ||||
| Operating Temperature Range | MAX148_C_P/MAX149_C_P | 0 | 70 | °C | |
| Operating Temperature Range | MAX148_E_P/MAX149_E_P | -40 | 85 | °C | |
| Signal-to-Noise + Distortion (SINAD) | 10kHz Sine-Wave Input, 0 to 2.500VP-P, 133ksps | 66 | dB | ||
| Total Harmonic Distortion (THD) | Up to the 5th harmonic | -70 | dB | ||
| Spurious-Free Dynamic Range (SFDR) | 10kHz Sine-Wave Input, 0 to 2.500VP-P, 133ksps | 70 | dB | ||
| Channel-to-Channel Crosstalk | 65kHz, 2.500VP-P | -75 | dB | ||
| Small-Signal Bandwidth | -3dB rolloff | 2.25 | MHz | ||
| Full-Power Bandwidth | 1.0 | MHz |
Key Features
High-Speed Conversion: The MAX148ACAP+T can sample at rates up to 133ksps.
Low Power Consumption: Operates with low power consumption, making it suitable for battery-powered applications.
Flexible Serial Interface: Supports SPI, QSPI, and MICROWIRE interfaces, allowing easy connection to microprocessors.
Software Configurable Inputs: Analog inputs can be configured for unipolar/bipolar and single-ended/differential operation.
High-Bandwidth Track/Hold: Features a high-bandwidth track/hold circuit with a small-signal bandwidth of 2.25MHz and a full-power bandwidth of 1.0MHz.
Compact Package: Available in PDIP and SSOP packages, making it suitable for space-constrained applications.
Applications
Data Acquisition Systems: Ideal for various data-acquisition applications due to its high conversion speed and low power consumption.
Industrial Automation: Suitable for industrial automation systems that require multiple analog input channels.
Medical Devices: Can be used in medical devices that require precise analog-to-digital conversion.
Automotive Systems: Applicable in automotive systems that need high-speed and low-power data acquisition.
Q & A
- What is the supply voltage range for the MAX148ACAP+T?
The supply voltage range for the MAX148ACAP+T is +2.7V to +5.25V.
- How many channels does the MAX148ACAP+T support?
The MAX148ACAP+T supports 8 analog input channels.
- What is the maximum conversion rate of the MAX148ACAP+T?
The maximum conversion rate of the MAX148ACAP+T is 133ksps.
- What types of analog input configurations are supported by the MAX148ACAP+T?
The MAX148ACAP+T supports both unipolar/bipolar and single-ended/differential analog input configurations.
- What is the small-signal bandwidth of the track/hold circuit in the MAX148ACAP+T?
The small-signal bandwidth of the track/hold circuit is 2.25MHz.
- What is the full-power bandwidth of the MAX148ACAP+T?
The full-power bandwidth is 1.0MHz.
- What serial interfaces are supported by the MAX148ACAP+T?
The MAX148ACAP+T supports SPI, QSPI, and MICROWIRE serial interfaces.
- What is the operating temperature range for the MAX148ACAP+T?
The operating temperature range is 0°C to 70°C for the commercial grade and -40°C to 85°C for the extended grade.
- What is the signal-to-noise plus distortion (SINAD) of the MAX148ACAP+T?
The SINAD is 66dB for a 10kHz sine-wave input.
- How does the MAX148ACAP+T protect against overvoltage?
The device has digital output protection with a voltage range of -0.3V to (VDD + 0.3V) and can handle digital inputs up to +6V.
