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MAX197AEWI
MAX197AEWI is a 12‑bit multi‑channel data‑acquisition ADC in SOIC‑28 package. It integrates multiplexer, track‑hold circuit and reference source, only requires single +5V power supplyAnalog Dev....
It offers 8 analog input channels for single‑ended or differential signals, with four software‑selectable voltage ranges: ±10V, ±5V, 0‑10V, 0‑5V. Analog inputs support ±16.5V over‑voltage protection to resist field surge interference. It achieves 100ksps sampling rate with 12‑bit conversion accuracy, and supports internal or external reference clock.
The chip adopts split parallel bus, easy to connect with common MCU and DSP. Two power‑down modes help reduce power consumption for portable devices. Operating temperature ranges from ‑40℃ to +85℃ for industrial scenarios.
It is widely used in industrial data acquisition, test instruments, embedded measurement and factory automation nodes. Designers should follow the datasheet for peripheral circuit layout. Datasheet PDF is available for download.
Multi‑range 12‑Bit High‑precision Conversion
12‑bit resolution with excellent linearity. Software‑configurable multiple analog input ranges adapt to different sensor signal levels, simplifying analog front‑end circuit design for measurement systems.
8‑Channel Multiplexer & Over‑voltage Protection
8 analog input channels support single‑ended or differential signals. Built‑in ±16.5V fault‑tolerant input protection, external surge will not damage the chip, improving field‑working reliability.
Single 5V Supply & Flexible Digital Interface
Works on single +5V power, with internal 4.096V reference source. Parallel bus directly connects with MCU / DSP, supports internal or external clock and two power‑saving shutdown modes for embedded devices.
Item | Specifications |
|---|---|
Part Number | MAX197AEWI |
Device Type | 12‑Bit Multi‑Range Data Acquisition System (DAS, ADC) |
Manufacturer | Analog Devices (Maxim Integrated) |
Resolution | 12‑Bit |
Number of Analog Input Channels | 8 |
Max Sampling Rate | 100 ksps |
Conversion Time | 6 μs (external clock), 7.7 μs (internal clock) |
Analog Input Ranges(Software Selectable) | ±10V, ±5V, 0~+10V, 0~+5V |
Input Fault Protection | ±16.5V overvoltage tolerance |
Data Interface | 8+4‑bit Parallel Bus Interface |
Voltage Reference | Internal 4.096V / External reference supported |
Supply Voltage(VDD) | 4.75V ~ 5.25V (Single +5V supply) |
Operating Temperature Range | -40°C ~ +85°C |
Mounting Type | Surface Mount |
Package / Case | 28‑SOIC (Wide‑Body, 7.50 mm width) |
Integral Non‑Linearity(INL) | ±½ LSB |
Differential Non‑Linearity(DNL) | ±1 LSB |
Special Features | Internal / External clock option; Two programmable power‑down modes; Internal track‑and‑hold |
Industrial Process Control
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Factory Automation & Robotics
Real‑time analog feedback sampling for robot position sensors, actuator monitoring and assembly‑line inspection systems; wide over‑voltage tolerance improves reliability in noisy factory environments.
Automated Test Equipment (ATE)
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Portable Industrial Data Loggers
High‑precision field data recording instruments. Power‑down modes reduce power consumption, suitable for battery‑powered industrial monitoring equipment deployed on‑site.
Instrumentation & Measuring Devices
Used in multi‑channel digital meters and monitoring instruments. Integrated track‑and‑hold circuit guarantees accurate sampling of fast‑changing analog signals.
Telecommunication Equipment Monitoring
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Medical Industrial Instrumentation
Multi‑parameter signal collection for industrial‑grade medical monitoring equipment, capturing physiological and analog sensor signals with 12‑bit resolution.
