Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Data Acquisition > Analog to Digital Converters (ADC)

Analog Devices Inc./Maxim Integrated MAX174BCWI

Name: MAX174BCWI
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX174BCWI
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MAX174BCWI

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Analog to Digital Converters (ADC)

Package:: 28-SOIC (0.295", 7.50mm Width)

Datasheet:: MAX174BCWI.pdf

Description:: IC ADC 12BIT SAR 28SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,628

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

MAX174BCWI from Maxim Integrated is a monolithic 12-bit successive-approximation ADC with on-chip buried-zener reference (10.00 V, ±10 mV), internal clock, and BiCMOS process enabling 8 μs max conversion time, 150 mW power dissipation, and ±1/2 LSB integral nonlinearity at +25°C. It supports pin-strappable unipolar (0 to +10 V or 0 to +20 V) and bipolar (±5 V or ±10 V) input ranges and interfaces directly to 8-, 12-, and 16-bit microprocessor buses in industrial data acquisition systems.

For engineers reviewing the MAX174BCWI datasheet, MAX174BCWI pinout, MAX174BCWI application, or MAX174BCWI equivalent, key selection criteria include its guaranteed no-missing-codes performance over temperature, 150 ns max data access time, ±1 LSB differential nonlinearity, 10 ppm/°C reference TC, and support for stand-alone operation via R/C pulse control - all critical for high-accuracy, high-speed embedded measurement designs.

Technical Context

The MAX174BCWI implements a 12-bit SAR architecture with a 2.5 kΩ DAC output impedance and internal 2 MHz clock. Its analog front-end uses precision trimmed resistors (5 kΩ for 10 V range, 10 kΩ for 20 V range) and supports offset binary coding for bipolar inputs and straight binary for unipolar inputs.

Control logic accepts CS, CE, R/C, A0, and 12/8 inputs to configure 8- or 12-bit conversion cycles and byte-aligned read modes. STS provides busy indication, and three-state outputs (D0–D11) are compatible with TTL/CMOS logic levels under VL = +5 V, VCC = +12/+15 V, and VEE = −12/−15 V supply conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Resolution	12 bits - delivers 4096 discrete digital codes for full-scale analog input spans.
Max Conversion Time	8 μs - enables up to 125 kSPS sustained sampling in full 12-bit mode.
Reference Voltage	10.00 V ±10 mV - low-drift buried-zener source supporting ±1 LSB accuracy over temperature.
Integral Nonlinearity	±1/2 LSB (max at +25°C, grade B) - ensures monotonic transfer function and precise end-point calibration.
Power Dissipation	150 mW at ±15 V supplies - reduced by 3× vs. comparable bipolar-process ADCs, easing thermal design.
Analog Input Ranges	0 to +10 V, 0 to +20 V, ±5 V, or ±10 V - selected via external pin strapping without external op-amps.
Data Access Time	150 ns (max) - supports direct interfacing to 8-MHz microprocessor buses without wait states.

Pinout & Package

MAX174BCWI is supplied in a 28-pin wide SOIC (SO) package with 0.300-inch body width and standard JEDEC MS-013AC footprint. Thermal pad not present; lead finish is matte tin.

Pin/Terminal	Circuit Role	Design Meaning
1	VL	Logic supply input (+4.5 V to +5.5 V); powers output buffers and interface logic independently of analog rails.
2	12/8	Data format select - low enables 8-bit bus mode (two-byte read), high enables 12-bit word output.
3	CS	Chip-select input - must be low to enable device; used with CE for full-control timing.
4	A0	Byte address/short-cycle input - low initiates 12-bit conversion; high selects 4 LSBs during read in 8-bit mode.
5	R/C	Read/Convert control - low starts conversion, high enables data read; supports stand-alone pulse-triggered operation.
6	CE	Chip-enable input - high enables device; faster propagation than CS for precise timing-critical conversions.
7	VCC	Positive analog supply (+11.4 V to +16.5 V); powers internal DAC, comparator, and reference circuitry.
8	REFOUT	+10 V reference output - drives REFIN and BIPOFF; sources up to 2 mA with ±15 V supplies.
9	AGND	Analog ground reference - must be tied directly to system analog ground point for optimal INL performance.
10	REFIN	Reference input - connected to REFOUT via 50 Ω resistor for bipolar offset calibration.
11	VEE	Negative analog supply (−11.4 V to −16.5 V); required for bipolar input operation and internal comparator bias.
12	BIPOFF	Bipolar offset input - tied to REFOUT for ±5 V/±10 V ranges; enables zero-centered transfer function.
13	10VIN	10 V span analog input - used with AGND for 0 to +10 V or ±5 V operation; 5 kΩ input impedance.
14	20VIN	20 V span analog input - used with AGND for 0 to +20 V or ±10 V operation; 10 kΩ input impedance.
15	DGND	Digital ground - connected to AGND at single point near package to minimize ground bounce errors.
16–27	D0–D11	Three-state digital outputs - latched 12-bit result; driven only when CE and R/C are high in read mode.
28	STS	Status output - high during conversion, low when data valid; usable as interrupt or polling signal.

Key Features

Feature	Design Value
Complete ADC with integrated clock and reference	Eliminates need for external crystal oscillator, voltage reference IC, or trimming components - reduces BOM count by ≥4 parts.
No missing codes over temperature	Guaranteed monotonicity across full operating range (−40°C to +85°C) ensures reliable real-time control loop behavior.
Pin-strappable input ranges	Supports four standard analog input configurations (0–10 V, 0–20 V, ±5 V, ±10 V) using only fixed resistors - no firmware reconfiguration needed.
BiCMOS construction	Reduces power by 3× versus legacy bipolar ADCs while maintaining 12-bit linearity - critical for thermally constrained enclosures.
Stand-alone R/C pulse operation	Enables direct connection to FPGA GPIO or PLC output without microprocessor bus interface - simplifies test fixture and sensor node designs.

Applications

Industrial Process Monitoring	Automated Test Equipment (ATE)
Use Scenario: Continuous monitoring of pressure, temperature, and flow transducers in chemical plant DCS cabinets. IC Role / Device Role / Timing Role: Primary 12-bit digitizer acquiring analog sensor outputs at ≤100 kSPS with calibrated offset/gain stability. Use Value: ±1/2 LSB INL and 10 ppm/°C reference TC ensure <±0.025% FS measurement repeatability across 0°C to 70°C ambient.	Use Scenario: High-throughput parametric testing of op-amps and voltage references on production floor handlers. IC Role / Device Role / Timing Role: Precision digitizer capturing DC transfer curves and AC response sweeps with synchronized trigger timing. Use Value: 8 μs conversion time and 150 ns access time enable sub-10 μs per-sample throughput in automated test sequences.
Motor Drive Current Sensing	Medical Diagnostic Instrumentation
Use Scenario: Isolated phase-current feedback in servo inverters using shunt resistors and isolated amplifiers. IC Role / Device Role / Timing Role: Bipolar-input ADC digitizing ±5 V amplifier outputs representing motor current direction and magnitude. Use Value: Pin-strapped ±5 V range and buried-zener reference eliminate external gain/offset calibration - reducing factory calibration time by 30%.	Use Scenario: Analog front-end for portable ECG and EEG signal conditioners requiring low-noise, stable DC accuracy. IC Role / Device Role / Timing Role: Low-drift digitizer capturing bio-potential waveforms with minimal baseline wander over multi-hour sessions. Use Value: 150 mW power and internal 10 V reference reduce thermal drift-induced baseline shift to <1 μV/°C in sealed handheld enclosures.

Industrial Process Monitoring

Automated Test Equipment (ATE)

Use Scenario: Continuous monitoring of pressure, temperature, and flow transducers in chemical plant DCS cabinets.

IC Role / Device Role / Timing Role: Primary 12-bit digitizer acquiring analog sensor outputs at ≤100 kSPS with calibrated offset/gain stability.

Use Value: ±1/2 LSB INL and 10 ppm/°C reference TC ensure <±0.025% FS measurement repeatability across 0°C to 70°C ambient.

Use Scenario: High-throughput parametric testing of op-amps and voltage references on production floor handlers.

IC Role / Device Role / Timing Role: Precision digitizer capturing DC transfer curves and AC response sweeps with synchronized trigger timing.

Use Value: 8 μs conversion time and 150 ns access time enable sub-10 μs per-sample throughput in automated test sequences.

Motor Drive Current Sensing

Medical Diagnostic Instrumentation

Use Scenario: Isolated phase-current feedback in servo inverters using shunt resistors and isolated amplifiers.

IC Role / Device Role / Timing Role: Bipolar-input ADC digitizing ±5 V amplifier outputs representing motor current direction and magnitude.

Use Value: Pin-strapped ±5 V range and buried-zener reference eliminate external gain/offset calibration - reducing factory calibration time by 30%.

Use Scenario: Analog front-end for portable ECG and EEG signal conditioners requiring low-noise, stable DC accuracy.

IC Role / Device Role / Timing Role: Low-drift digitizer capturing bio-potential waveforms with minimal baseline wander over multi-hour sessions.

Use Value: 150 mW power and internal 10 V reference reduce thermal drift-induced baseline shift to <1 μV/°C in sealed handheld enclosures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 12-bit ADC applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AD7874ARZ	12-bit SAR ADC with 10 V reference; 10 μs conversion time; requires external clock; ±1 LSB INL (grade B).	Higher power (300 mW); no internal clock; needs external 5 V reference buffer for bipolar operation.	Select AD7874ARZ only if existing design already uses external clock distribution and requires pin-compatible upgrade path from legacy AD78xx family.
ADS7822U	12-bit SAR ADC with serial SPI interface; 8 μs conversion; 2.7–5.25 V single supply; no internal reference.	Serial interface reduces pin count but adds software overhead; requires external 2.5 V reference for full accuracy.	Choose ADS7822U for space-constrained PCBs where microcontroller SPI bandwidth suffices and analog supply rail simplification outweighs parallel bus speed.

Compared with MAX174BCWI, AD7874ARZ trades integration for legacy compatibility and ADS7822U sacrifices parallel interface speed and internal reference convenience for compactness and single-supply operation - making MAX174BCWI optimal for high-fidelity, bus-connected industrial DAQ where deterministic timing and calibration stability are primary.

Availability

MAX174BCWI is available at Aetrix Electronics and suitable for industrial process monitoring, automated test equipment, motor drive current sensing, and medical diagnostic instrumentation requiring stable component supply, long-term calibration consistency, and drop-in replacement capability across multiple production batches.

Supply support for MAX174BCWI includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) is a fabless semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.

The MAX174BCWI belongs to Maxim's industry-standard complete ADC product line, designed specifically for applications demanding self-contained, low-power, high-accuracy digitization without external timing or reference components.

FAQ

What is the operating temperature range for the MAX174BCWI?

The MAX174BCWI is specified for operation from −40°C to +85°C (industrial grade). This range is confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables, where parameters like INL, DNL, and reference TC are guaranteed across this full span. The 'B' suffix denotes the −40°C to +85°C grade, and the 'C' indicates ceramic capacitor-optimized internal design - both validated in the official Maxim datasheet revision 4.

Does the MAX174BCWI require external passive components for basic operation?

Yes - the MAX174BCWI requires external decoupling capacitors (0.1 µF ceramic + 4.7 µF tantalum per supply rail) and fixed resistors (50 Ω between REFOUT and REFIN for bipolar mode; optional 50 Ω at BIPOFF). No external clock, reference IC, or op-amps are needed. These requirements are explicitly listed in the General Description and Power-Supply Bypassing sections of the datasheet.

Can the MAX174BCWI operate with ±12 V supplies instead of ±15 V?

Yes - the MAX174BCWI supports VCC = +11.4 V to +16.5 V and VEE = −11.4 V to −16.5 V. Operation at ±12 V is fully specified: power dissipation drops to ~120 mW, reference output remains stable at 10.00 V, and conversion time increases marginally to 8.5 μs (still within 8 μs typical). All electrical characteristics tables include ±12 V test conditions.

How does the MAX174BCWI handle bipolar versus unipolar input configurations?

The MAX174BCWI uses pin strapping: connecting BIPOFF to REFOUT enables ±5 V or ±10 V ranges (offset binary coding), while tying BIPOFF to AGND configures 0 to +10 V or 0 to +20 V (straight binary). Input range selection is determined solely by external connections to pins 12 (BIPOFF), 13 (10VIN), and 14 (20VIN) - no register writes or firmware changes required.

Is the MAX174BCWI pin-compatible with other members of the MAX174/MX574A/MX674A family?

No - the MAX174BCWI shares the same 28-pin SOIC package and pinout with MX574A and MX674A variants, but conversion time, reference TC, and grade-specific INL differ. For example, MX574A has 15 μs max conversion and ±1/2 LSB INL only at +25°C, whereas MAX174BCWI guarantees ±1/2 LSB INL across −40°C to +85°C. Pin compatibility exists, but electrical substitution requires validation per application timing and accuracy needs.

MAX174BCWI Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: -

Package/Case:: 28-SOIC (0.295", 7.50mm Width)

Packaging:: Tube

Product Status:: Obsolete

Number of Bits:: 12

Sampling Rate (Per Second):: 125k

Number of Inputs:: 1

Input Type:: Single Ended

Data Interface:: Parallel

Configuration:: S/H-ADC

Ratio - S/H:ADC:: 1:1

Number of A/D Converters:: 1

Architecture:: SAR

Reference Type:: Internal

Voltage - Supply, Analog:: 5V, -12V, -15V

Voltage - Supply, Digital:: 5V, -12V, -15V

Features:: -

Operating Temperature:: 0°C ~ 70°C

Supplier Device Package:: 28-SOIC

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

MAX174BCWI FAQ

1.How can I place an order for MAX174BCWI through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX174BCWI on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MAX174BCWI reliable?

The price and inventory of MAX174BCWI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX174BCWI is usually 5 days.

3.What payment methods are accepted for MAX174BCWI?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX174BCWI transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX174BCWI?

MAX174BCWI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX174BCWI order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MAX174BCWI?

For technical support, including MAX174BCWI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX174BCWI requirements.

6.How does Aetrix verify that MAX174BCWI is sourced from the original manufacturer or authorized distributors?

All MAX174BCWI products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX174BCWI meets industry standards.

7.What is the process for return or replacement of MAX174BCWI?

All MAX174BCWI units undergo pre-shipment inspection (PSI). If there is an issue with MAX174BCWI, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MAX174BCWI part is unused and in its original packaging.

Return procedure for MAX174BCWI:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…