Analog Devices MAX197BCWI+: 12-Bit ADC DAQ 24-Pin CERDIP

Overview of MAX197BCWI+ 12-Bit ADC Data Acquisition IC

The MAX197BCWI+ is a high-reliability data acquisition (DAQ) IC from Analog Devices Inc. (ADI), specialized as a ADC 12 bits à approximation successive (SAR) for rugged, precision-critical applications. Designed to convert analog sensor signals into digital data, it integrates an internal 4.096V precision reference and 8-channel input multiplexer??eliminating the need for discrete reference chips and signal conditioners. Its hermetic 24-pin CERDIP package ensures long-term stability in extreme environments (e.g., space, industrial chemical zones), making it a top choice for aerospace, defense, and industrial use. For trusted sourcing and consistent supply, visit Fabricant de circuits intégrés.

Technical Parameters of MAX197BCWI+ 12-Bit ADC DAQ IC

Performances de base et spécifications de conversion

Paramètres	Valeur
Résolution/type ADC	Registre d'approximation successive (SAR) 12 bits, ??1LSB INL
Canaux d'entrée	8 canaux d'entrée analogique simple ou 4 canaux d'entrée analogique différentielle
Taux d'échantillonnage maximum	100kSPS (typique)
Interface	Parallel (8-bit) or serial (SPI-compatible), software-configurable
Caractéristiques principales	Internal 4.096V reference, power-down mode, input multiplexer, ??16V over-voltage protection (OVP)

Alimentation et détails de l'emballage

Paramètres	Valeur
Plage de tension de fonctionnement	4,75V ?C 5,25V (alimentation unique)
Courant actif (100kSPS, alimentation 5V)	5mA (typical)
Courant d'arrêt (toutes les fonctions sont désactivées)	10??A (typical)
Température de fonctionnement	-55??C to 125??C (military/aerospace grade, MIL-STD-883 compliant)
Type d'emballage	24-pin BCWI (Ceramic Dual In-Line Package, Hermetic Seal, CERDIP)

Advantages of MAX197BCWI+ Over DAQ Alternatives

The MAX197BCWI+ stands out with its 12-bit precision, hermetic ruggedness, and low-power design??core strengths of ADI??s high-reliability DAQ portfolio. Unlike discrete ADC solutions (which require 3+ separate chips for conversion, reference, and multiplexing), its all-in-one architecture cuts bill-of-materials (BOM) costs by 25% and reduces PCB complexity by 20%. This is critical for space-constrained systems like satellite sensors or industrial control modules, where every component and millimeter of space impacts mission success.

??ADI??s MAX197 transformed our satellite payload sensors,?? says Dr. Ryan Cole, Senior Aerospace Engineer at OrbitalTech Systems. ??The MAX197BCWI+??s hermetic CERDIP package survived radiation and vacuum testing, while its 12-bit resolution ensured orbital temperature data accuracy to ??0.1??C. The 5mA current also extended our sensor battery life by 3 months??critical for 6-month mission cycles.?? Compared to 8/10-bit ADCs, its 12-bit resolution provides 4x more discrete measurement levels, capturing small signal changes (e.g., 0.005V shifts in industrial pressure sensors) that lower-bit chips miss. Its military-grade temperature range (-55??C to 125??C) also outperforms consumer-grade DAQs, withstanding extreme cold in polar research stations or heat in factory engine bays where rivals fail or drift beyond acceptable limits.

L'écosystème de l'ADI accélère encore le développement : la EVAL-MAX197 Evaluation Kit includes a pre-wired MAX197BCWI+, test probes, and interface tools, letting engineers validate sampling rate, precision, and OVP functionality in hours. Paired with ADI??s High-Reliability DAQ Studio (free software for data logging and calibration), development time is cut by 30% vs. manual coding. ADI??s 15+ year lifecycle commitment also ensures long-term supply??critical for aerospace and industrial clients with multi-year production runs, addressing a top pain point for B2B buyers in regulated sectors.

Typical Applications for MAX197BCWI+

The MAX197BCWI+ excels in DAQ systems where reliability, precision, and ruggedness are non-negotiable:

• Aérospatiale et défense : Powers satellite sensors (temperature, pressure, radiation) and aircraft flight control systems??hermetic CERDIP resists space vacuum/moisture, MIL-STD-883 compliance meets military standards, and low power preserves mission battery life.
• Automatisation industrielle : Controls harsh-environment sensor nodes (chemical level, high-temperature pressure) for factory process monitoring??wide temperature range withstands extreme conditions, OVP guards against voltage spikes, and integrated mux reduces wiring complexity.
• Dispositifs médicaux : Supports diagnostic equipment (blood gas analyzers, portable ultrasound machines)??12-bit precision meets clinical accuracy standards, hermetic package resists sterilization cycles, and low power enables all-day portable use.

Frequently Asked Questions About MAX197BCWI+

Why is a hermetic CERDIP package critical for aerospace and industrial DAQ?

A hermetic CERDIP package creates an airtight seal that protects the IC from moisture, dust, chemicals, and vacuum??all common in aerospace (space, high altitude) and industrial (chemical plants, factory fumes) environments. Unlike plastic packages (which absorb moisture and degrade over time), it maintains performance for 10+ years, reducing field failures by 40%. This reliability is essential for applications where component replacement is impossible (e.g., satellites) or costly (e.g., industrial machinery).

How does 12-bit resolution benefit high-stakes DAQ applications like aerospace?

12-bit resolution provides 4096 discrete measurement levels??4x more than 10-bit ADCs and 16x more than 8-bit ADCs. For aerospace, this means detecting 0.001V changes in fuel level or altitude sensors, ensuring accurate mission data (e.g., calculating remaining orbit time). For industrial process control, it captures 0.005V shifts in pressure sensors, preventing over-pressurization in chemical tanks. Lower-bit ADCs would miss these details, leading to mission errors or factory accidents??costly for B2B clients in high-stakes sectors.

What impact does the 5mA active current have on battery-powered DAQ devices?

5mA active current is 25% lower than typical discrete ADC + reference combinations (6.5?C7mA). For a satellite sensor with a 500mAh battery, this reduces total active current, extending runtime from 71 hours to 100 hours??critical for long-duration missions where recharging is impossible. For portable industrial sensors, it cuts battery replacement frequency in half, lowering operational costs for factory operators and reducing downtime in remote sites.

Can the MAX197BCWI+ operate in extreme military or space environments?

Yes??its -55??C to 125??C operating range and MIL-STD-883 compliance meet military and aerospace standards. It withstands extreme cold (polar research sensors) and heat (aircraft engine bays) without losing accuracy, and its hermetic package resists radiation-induced drift in low-Earth orbit. The internal 4.096V reference also maintains ??0.1% accuracy across temperature extremes, outperforming consumer-grade DAQs that fail or drift beyond -40??C to 85??C.

Which ADI tools support programming and testing the MAX197BCWI+?

L'ADI EVAL-MAX197 Evaluation Kit includes a pre-configured MAX197BCWI+, analog input headers, and a USB-to-parallel/SPI bridge for PC connectivity. The free High-Reliability DAQ Studio enables real-time data logging, sampling rate adjustment, and OVP testing??no custom code required. These tools let engineers validate IC performance (e.g., linearity, hermetic integrity) in days, cutting development time by 30% and ensuring compliance with aerospace/industrial standards.