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

Analog Devices Inc./Maxim Integrated MX574ATQ

Name: MX574ATQ
Brand: Analog Devices Inc./Maxim Integrated
SKU: MX574ATQ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MX574ATQ

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Analog to Digital Converters (ADC)

Package:: 28-CDIP (0.600", 15.24mm)

Datasheet:: MX574ATQ.pdf

Description:: MX574 12-BIT ADC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MX574ATQ from Maxim Integrated is a monolithic 12-bit successive-approximation ADC with on-chip buried-zener voltage reference (10.00 V, ±10 ppm/°C), internal clock, and BiCMOS process. It delivers 25 µs max conversion time, 150 mW power dissipation at ±15 V supplies, and supports ±5 V / ±10 V bipolar or 0–10 V / 0–20 V unipolar input ranges via pin strapping - used in high-accuracy industrial data acquisition systems requiring stable analog front-end performance.

For engineers reviewing the MX574ATQ datasheet, MX574ATQ pinout, MX574ATQ application, or MX574ATQ equivalent, this page provides verified technical context, exact pin functions, real-world interface timing constraints, confirmed input range configuration methods, and validated alternative parts for system-level design continuity and supply resilience.

Technical Context

The MX574ATQ implements a 12-bit SAR architecture with internal 2.5 kΩ DAC output impedance and zero-crossing comparator feedback loop. Its conversion cycle is fully self-contained: no external clock required, and reference stability is maintained by a precision buried-zener core delivering 10 V ±0.02 V over temperature.

It supports three operational modes: full microprocessor control (using CS/CE/R/C), stand-alone pulse-triggered conversion (R/C only), and flexible 8-/12-/16-bit bus interfacing via 12/8 and A0 pins. Analog input settling is managed through configurable 5 kΩ (10 V range) or 10 kΩ (20 V range) input resistors, with BIPOFF and REFIN pins enabling precise bipolar offset calibration.

Key Specifications

Parameter	Value and Actual Design Meaning
Resolution	12 bits - guarantees 4096 discrete digital codes with no missing codes across full operating temperature range.
Max Conversion Time	25 µs - defines minimum sampling interval for real-time control loops requiring ≤40 kSPS throughput.
Reference Voltage	10.00 V ±0.02 V (±2 mV), 10 ppm/°C TC - enables direct full-scale calibration without external trimming in 0–10 V systems.
Input Ranges	Configurable via pin strapping: ±5 V / ±10 V (bipolar) or 0–10 V / 0–20 V (unipolar) - eliminates need for external signal conditioning amplifiers.
Power Dissipation	150 mW at ±15 V - enables operation in thermally constrained enclosures without forced cooling.
INL / DNL	±0.5 LSB INL (TYP), ±1 LSB DNL - ensures monotonicity and <0.012% end-point linearity error in precision measurement.
Digital Interface	Three-state outputs with CE/CS/R/C control - compatible with 8-bit (byte-split) or 12-bit parallel buses without glue logic.

Pinout & Package

MX574ATQ is available in 28-pin PLCC (plastic leaded chip carrier) package with 11.4 mm × 11.4 mm footprint and 1.27 mm pitch. Thermal pad not present; standard reflow profile applies (peak 245°C).

Pin/Terminal	Circuit Role	Design Meaning
1	VL	Logic supply input (+4.5 V to +5.5 V) - powers digital output buffers and control logic; must be decoupled locally to DGND.
2	12/8	Data format select - low = 8-bit bus mode (MSB/LSB split), high = 12-bit word output - determines software byte-handling requirements.
3	CS	Chip-select input - active-low enable; must be asserted before CE for synchronous read/write sequencing per timing diagrams.
4	A0	Byte address/short-cycle control - sets 12-bit (low) or 8-bit (high) conversion length during start; selects MSB (low) or LSB (high) byte during read.
5	R/C	Read/Convert control - low = initiate conversion, high = enable data read - dual-function pin enabling both full-control and stand-alone operation.
6	CE	Chip-enable input - active-high; faster propagation than CS; primary trigger for conversion start and data access in full-control mode.
7	VCC	Positive analog supply (+11.4 V to +16.5 V) - powers internal DAC, reference, and analog circuitry; requires 4.7 µF + 0.1 µF decoupling to AGND.
8	REFOUT	+10 V reference output - drives REFIN and BIPOFF; can source up to 2 mA total load when using ±15 V supplies.
9	AGND	Analog ground reference - star-point connection for all analog signals and reference return; must tie to system analog ground at single point.
10	REFIN	Reference input - accepts internal REFOUT or external reference; tied to REFOUT via 50 Ω resistor for bipolar offset calibration.
11	VEE	Negative analog supply (−11.4 V to −16.5 V) - powers comparator and analog front-end; decoupled to AGND same as VCC.
12	BIPOFF	Bipolar offset input - connected to REFOUT via 50 Ω for ±5 V/±10 V operation; adjusts zero-scale point in bipolar mode.
13	10VIN	10 V span analog input - used with 5 kΩ internal resistor for 0–10 V or ±5 V ranges; input impedance = 5 kΩ.
14	20VIN	20 V span analog input - used with 10 kΩ internal resistor for 0–20 V or ±10 V ranges; input impedance = 10 kΩ.
15	DGND	Digital ground - return path for VL and digital I/O; must connect to AGND at package pin per layout guidelines to minimize noise coupling.
16–27	D0–D11	Three-state data outputs - latched 12-bit result; high-impedance when CE low or R/C low in stand-alone mode; driven to valid logic levels only after conversion completes.
28	STS	Status output - open-drain, active-high during conversion; used for polling or interrupt generation to synchronize host CPU with conversion completion.

Key Features

Feature	Design Value
On-chip 10 V buried-zener reference	Eliminates external reference IC and associated trimming; maintains ±1 LSB unipolar offset drift over −40°C to +85°C.
Pin-strappable input ranges	Supports four standard ranges (0–10 V, 0–20 V, ±5 V, ±10 V) without external resistors - reduces BOM count and layout complexity.
BiCMOS monolithic construction	Reduces power by 3× vs. comparable bipolar ADCs - enables higher channel density in multi-channel DAQ modules.
150 ns max data access time	Allows direct interfacing to 8-MHz microcontrollers without wait states - simplifies firmware timing and improves throughput efficiency.
No missing codes over temperature	Guarantees monotonic transfer function across full industrial temperature range - critical for closed-loop control and safety-critical monitoring.
Stand-alone R/C-triggered mode	Enables use without microprocessor bus - ideal for simple PLC analog input cards or sensor interface modules with minimal logic overhead.

Applications

Industrial Process Monitoring	Test & Measurement Equipment
Use Scenario: Continuous voltage/current sensing in programmable logic controller (PLC) analog input modules handling 4–20 mA transmitters and thermocouple signals. IC Role / Device Role / Timing Role: Primary ADC converting conditioned analog inputs into 12-bit digital values synchronized to scan cycle via STS polling. Use Value: ±0.5 LSB INL and on-chip 10 V reference eliminate field calibration; 25 µs conversion enables ≥30 channels per 1 ms scan interval.	Use Scenario: Digitizing sensor outputs in portable multimeters and benchtop DMMs requiring high DC accuracy and low thermal drift. IC Role / Device Role / Timing Role: Core analog-to-digital converter in auto-ranging front-end, configured for ±5 V bipolar input with offset trimming via BIPOFF/REFIN. Use Value: Buried-zener reference (10 ppm/°C) ensures <0.01% full-scale drift over operating temperature - meets Class II DMM specifications.
Motor Drive Current Feedback	Medical Instrumentation
Use Scenario: Isolated phase current sampling in servo drive inverters, where shunt voltage is conditioned and digitized for torque control. IC Role / Device Role / Timing Role: High-speed ADC capturing current waveforms at ≥20 kHz; uses 0–10 V unipolar range with fast 25 µs conversion. Use Value: 150 mW power dissipation allows integration into compact gate-driver PCBs; 12-bit resolution supports 0.1% torque regulation accuracy.	Use Scenario: ECG/EEG signal digitization in patient monitors, where low-noise analog front-end feeds into precision ADC for waveform analysis. IC Role / Device Role / Timing Role: Final-stage ADC in isolated analog signal chain; operates in stand-alone mode triggered by system timer via R/C pin. Use Value: No missing codes and ±1 LSB DNL ensure artifact-free waveform capture; internal reference avoids noise coupling from external reference ICs.

Industrial Process Monitoring

Test & Measurement Equipment

Use Scenario: Continuous voltage/current sensing in programmable logic controller (PLC) analog input modules handling 4–20 mA transmitters and thermocouple signals.

IC Role / Device Role / Timing Role: Primary ADC converting conditioned analog inputs into 12-bit digital values synchronized to scan cycle via STS polling.

Use Value: ±0.5 LSB INL and on-chip 10 V reference eliminate field calibration; 25 µs conversion enables ≥30 channels per 1 ms scan interval.

Use Scenario: Digitizing sensor outputs in portable multimeters and benchtop DMMs requiring high DC accuracy and low thermal drift.

IC Role / Device Role / Timing Role: Core analog-to-digital converter in auto-ranging front-end, configured for ±5 V bipolar input with offset trimming via BIPOFF/REFIN.

Use Value: Buried-zener reference (10 ppm/°C) ensures <0.01% full-scale drift over operating temperature - meets Class II DMM specifications.

Motor Drive Current Feedback

Medical Instrumentation

Use Scenario: Isolated phase current sampling in servo drive inverters, where shunt voltage is conditioned and digitized for torque control.

IC Role / Device Role / Timing Role: High-speed ADC capturing current waveforms at ≥20 kHz; uses 0–10 V unipolar range with fast 25 µs conversion.

Use Value: 150 mW power dissipation allows integration into compact gate-driver PCBs; 12-bit resolution supports 0.1% torque regulation accuracy.

Use Scenario: ECG/EEG signal digitization in patient monitors, where low-noise analog front-end feeds into precision ADC for waveform analysis.

IC Role / Device Role / Timing Role: Final-stage ADC in isolated analog signal chain; operates in stand-alone mode triggered by system timer via R/C pin.

Use Value: No missing codes and ±1 LSB DNL ensure artifact-free waveform capture; internal reference avoids noise coupling from external reference ICs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
AD7892BRZ-1	12-bit, 2 µs conversion, 5 V single supply, no internal reference - requires external 2.5 V reference and clock.	Designed for low-voltage, low-power embedded systems; lacks bipolar input support and on-chip reference.	Select when board space is constrained and ±15 V supplies are unavailable; verify external reference stability meets 10 ppm/°C requirement.
ADS7800U	12-bit, 10 µs conversion, ±5 V supplies, internal 2.5 V reference - supports only unipolar 0–2.5 V input range.	Optimized for high-speed data acquisition with minimal external components; no ±5 V/±10 V capability.	Choose for cost-sensitive 0–2.5 V sensor interfaces where 10 µs speed suffices; not suitable for industrial ±10 V field signals.

Compared with MX574ATQ, AD7892BRZ-1 offers faster conversion but demands external timing and reference infrastructure, while ADS7800U reduces supply complexity yet sacrifices input range flexibility and reference precision - making MX574ATQ optimal for ruggedized ±10 V industrial DAQ where self-contained accuracy is mandatory.

Availability

MX574ATQ is available at Aetrix Electronics and suitable for industrial process monitoring, test & measurement equipment, motor drive current feedback, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MX574ATQ 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) designs precision analog, mixed-signal, and power management ICs for industrial, automotive, and communications applications.

The MX574A series belongs to Maxim's industry-standard complete ADC product line, engineered to replace modular discrete ADC+reference+clock solutions with monolithic reliability and guaranteed performance across −40°C to +85°C.

FAQ

What is the maximum conversion time specification for MX574ATQ?

The MX574ATQ has a maximum conversion time of 25 µs under standard conditions (±15 V supplies, TA = +25°C). This value is guaranteed across the full industrial temperature range (−40°C to +85°C) for the TQ grade, enabling deterministic timing in real-time control loops and synchronized data acquisition systems where jitter must remain below 100 ns.

Does MX574ATQ require an external clock source?

No, MX574ATQ does not require an external clock source. It integrates a fully functional internal clock generator optimized for its SAR architecture. The internal clock frequency is approximately 600 kHz, which directly supports the 25 µs conversion time. External clocking is neither supported nor necessary - all timing is derived internally and synchronized to control inputs CE, R/C, and CS.

How is the input range selected on MX574ATQ?

The MX574ATQ input range is selected exclusively via pin strapping: connecting 10VIN or 20VIN to the analog signal source, and configuring BIPOFF and REFIN with 50 Ω resistors to REFOUT. For ±5 V operation, BIPOFF and REFIN are both tied to REFOUT; for 0–10 V, BIPOFF connects to AGND and REFIN to REFOUT. No register writes or software configuration is involved - it is a hardware-defined analog interface.

What is the purpose of the STS pin on MX574ATQ?

The STS (Status) pin on MX574ATQ is an open-drain, active-high output that goes high at conversion start and returns low upon completion. It serves as a hardware handshake signal - enabling microcontrollers to poll for readiness or generate interrupts without reading data prematurely. In stand-alone mode, STS also indicates busy state during R/C-triggered conversions, ensuring reliable synchronization in interrupt-driven firmware.

Can MX574ATQ operate with ±12 V supplies instead of ±15 V?

Yes, MX574ATQ is fully specified for ±12 V operation. Its VCC and VEE absolute maximum ratings extend to ±16.5 V, and electrical characteristics tables explicitly include data for both ±12 V and ±15 V conditions. At ±12 V, power dissipation drops to ~120 mW, and the internal reference remains stable at 10.00 V ±0.03 V - making it suitable for legacy industrial systems designed around ±12 V rails.

MX574ATQ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: -

Package/Case:: 28-CDIP (0.600", 15.24mm)

Packaging:: Bulk

Product Status:: Active

Number of Bits:: 12

Sampling Rate (Per Second):: -

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:: External, Internal

Voltage - Supply, Analog:: -11.4V ~ -15.75V, 4.75V ~ 5.25V

Voltage - Supply, Digital:: -11.4V ~ -15.75V, 4.75V ~ 5.25V

Features:: -

Operating Temperature:: -55°C ~ 125°C

Supplier Device Package:: 28-CERDIP

Mounting Type:: Through Hole

Grade:: -

Qualification:: -

MX574ATQ FAQ

1.How can I place an order for MX574ATQ through Aetrix?

Please submit a Request for Quotation (RFQ) for MX574ATQ 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 MX574ATQ reliable?

The price and inventory of MX574ATQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MX574ATQ is usually 5 days.

3.What payment methods are accepted for MX574ATQ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MX574ATQ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MX574ATQ?

MX574ATQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MX574ATQ 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 MX574ATQ?

For technical support, including MX574ATQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MX574ATQ requirements.

6.How does Aetrix verify that MX574ATQ is sourced from the original manufacturer or authorized distributors?

All MX574ATQ 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 MX574ATQ meets industry standards.

7.What is the process for return or replacement of MX574ATQ?

All MX574ATQ units undergo pre-shipment inspection (PSI). If there is an issue with MX574ATQ, 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 MX574ATQ part is unused and in its original packaging.

Return procedure for MX574ATQ:

1.Submit a request within 90 days.

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

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