Overview
The MAX1202ACAP+ is a 12-bit, 8-channel, serial analog-to-digital converter (ADC) designed by Analog Devices Inc./Maxim Integrated. This component is part of the MAX1202/MAX1203 family, which is specifically tailored for applications involving mixed +5V (analog) and +3V (digital) supply voltages. The MAX1202ACAP+ integrates an 8-channel multiplexer, high-bandwidth track/hold circuitry, and a serial interface, making it suitable for a wide range of data-acquisition systems.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Resolution | 12-bit | ||||
| Analog Supply Voltage | ±5V, 5V | V | |||
| Digital Supply Voltage | 2.7V to 5.25V | V | |||
| Conversion Rate | External clock, 2MHz | 133ksps | samples/s | ||
| Conversion Time | Internal clock | 5.5 | 10 | μs | |
| Track/Hold Acquisition Time | 1.5 | μs | |||
| Aperture Delay | 10 | ns | |||
| Aperture Jitter | < 50 | ps | |||
| Internal Clock Frequency | 1.7 | MHz | |||
| External Clock Frequency Range | 0.1 | 2.0 | MHz | ||
| Reference Voltage | 4.096V (internal) | V | |||
| Power Consumption | Operating Mode | 1.5mA | mA | ||
| Power Consumption | Power-Down Mode | 2μA | μA |
Key Features
- High-Speed Conversion: The MAX1202ACAP+ supports conversion rates up to 133ksps with an external clock frequency of up to 2MHz.
- Internal Reference: The MAX1202 features an internal 4.096V reference voltage, eliminating the need for an external reference source.
- Serial Interface: A 4-wire serial interface compatible with SPI, MICROWIRE, and TMS320-family digital signal processors, allowing direct connection without external logic.
- Low Power Consumption: Operates in low-power mode, consuming 1.5mA in operating mode and 2μA in power-down mode.
- Software-Configurable Inputs: Supports software-configurable unipolar and bipolar inputs, enhancing flexibility in various applications.
- High-Bandwidth Track/Hold: Includes high-bandwidth track/hold circuitry for accurate signal acquisition.
- Reference-Buffer Amplifier: Features a reference-buffer amplifier to simplify gain trim and improve overall system performance.
Applications
- Data-Acquisition Systems: Ideal for use in multi-channel data-acquisition systems requiring high-speed and low-power consumption.
- Industrial Automation: Suitable for industrial automation applications where precise and rapid analog-to-digital conversions are necessary.
- Medical Devices: Can be used in medical devices that require accurate and reliable analog-to-digital conversion with low power consumption.
- Aerospace and Defense: Applicable in aerospace and defense systems where high reliability and performance are critical.
- Automotive Systems: Used in automotive systems for various sensor and control applications.
Q & A
- What is the resolution of the MAX1202ACAP+ ADC?
The MAX1202ACAP+ has a resolution of 12 bits.
- What are the supported supply voltages for the MAX1202ACAP+?
The MAX1202ACAP+ supports analog supply voltages of ±5V or 5V and digital supply voltages from 2.7V to 5.25V.
- What is the maximum conversion rate of the MAX1202ACAP+?
The MAX1202ACAP+ can achieve a conversion rate of up to 133ksps with an external clock frequency of up to 2MHz.
- Does the MAX1202ACAP+ have an internal reference voltage?
Yes, the MAX1202ACAP+ features an internal 4.096V reference voltage.
- What types of serial interfaces are supported by the MAX1202ACAP+?
The MAX1202ACAP+ supports SPI, MICROWIRE, and TMS320-family digital signal processors through its 4-wire serial interface.
- How much power does the MAX1202ACAP+ consume in operating mode?
The MAX1202ACAP+ consumes 1.5mA in operating mode and 2μA in power-down mode.
- What is the track/hold acquisition time of the MAX1202ACAP+?
The track/hold acquisition time is 1.5μs.
- Can the MAX1202ACAP+ be used in applications requiring both unipolar and bipolar inputs?
Yes, the MAX1202ACAP+ supports software-configurable unipolar and bipolar inputs.
- What is the purpose of the reference-buffer amplifier in the MAX1202ACAP+?
The reference-buffer amplifier simplifies gain trim and improves overall system performance.
- How can I evaluate the MAX1202ACAP+?
You can evaluate the MAX1202ACAP+ using the MAX1202 evaluation kit (EV kit) and a Maxim 3V 68L11D microcontroller module.
