Overview
The MAX1202AEAP+ is a 12-bit, 8-channel 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 requiring mixed +5V (analog) and +3V (digital) supply voltages. The MAX1202AEAP+ combines an 8-channel multiplexer, high-bandwidth track/hold circuitry, and a serial interface, making it ideal for high-speed data acquisition systems. It operates with either a single +5V analog supply or dual ±5V analog supplies and supports direct connection to SPI/MICROWIRE® devices and TMS320-family digital signal processors without external logic.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Bits | 12 | |
| Number of Inputs | 8 | |
| Input Type | Differential, Single-Ended | |
| Sampling Rate | 133 ksamples/s | |
| Voltage - Supply, Analog | ±5V, 5V | |
| Voltage - Supply, Digital | 2.7V ~ 5.25V | |
| Operating Temperature | -40°C ~ 85°C | |
| Conversion Time (Internal Clock) | 5.5 µs | |
| Conversion Time (External Clock, 2MHz) | 6 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 | |
| Data Interface | SPI/MICROWIRE/TMS320-Compatible 4-Wire Serial Interface |
Key Features
- Internal 4.096V reference (MAX1202) or external reference (MAX1203)
- Reference-buffer amplifier for simplified gain trim
- VL pin for digital output power supply, supporting 3V, 3.3V, or 5V logic levels
- Software-configurable unipolar/bipolar inputs
- Low power consumption: 1.5mA (Operating Mode), 2µA (Power-Down Mode)
- High conversion speed and low power consumption
- Direct connection to SPI/MICROWIRE® devices and TMS320-family digital signal processors
- High-bandwidth track/hold circuitry and serial interface operating up to 2MHz
Applications
The MAX1202AEAP+ is ideal for various data acquisition and monitoring applications, including:
- Industrial automation and control systems
- Medical devices requiring high precision and low power consumption
- Aerospace and defense systems where reliability and precision are critical
- Automotive systems, especially those requiring mixed voltage supplies
- Evaluation systems for comprehensive testing and development using the MAX1202 EV kit and EV system
Q & A
- What is the resolution of the MAX1202AEAP+ ADC?
The MAX1202AEAP+ has a 12-bit resolution.
- How many input channels does the MAX1202AEAP+ support?
The MAX1202AEAP+ supports 8 input channels.
- What are the supported input types for the MAX1202AEAP+?
The MAX1202AEAP+ supports both differential and single-ended inputs.
- What is the sampling rate of the MAX1202AEAP+?
The sampling rate is up to 133 ksamples/s.
- What are the analog and digital supply voltage requirements for the MAX1202AEAP+?
The analog supply voltage can be ±5V or 5V, and the digital supply voltage ranges from 2.7V to 5.25V.
- What is the operating temperature range for the MAX1202AEAP+?
The operating temperature range is -40°C to 85°C.
- Does the MAX1202AEAP+ have an internal clock or can it use an external clock?
The MAX1202AEAP+ can use either an internal clock or an external serial-interface clock.
- What is the maximum frequency of the serial interface?
The serial interface operates at up to 2MHz.
- How does the MAX1202AEAP+ support different logic levels for digital outputs?
The digital output logic levels (3V, 3.3V, or 5V) are determined by the voltage applied to the VL pin.
- What kind of evaluation kits are available for the MAX1202AEAP+?
The MAX1202 evaluation system (EV system) and the MAX1202 evaluation kit (EV kit) are available for comprehensive evaluation.
