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Analog Devices Inc./Maxim Integrated MX574ATD
- Part No.:
- MX574ATD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- -
- Datasheet:
-
MX574ATD.pdf
- Description:
- ADC, SUCCESSIVE APPROXIMATION, 1
- Quantity:
- Payment:
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Inventory:3,335
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Product details
Overview
MX574ATD from Maxim Integrated is a monolithic 12-bit successive-approximation ADC with integrated buried-zener reference (10V ±20mV), internal clock, and BiCMOS process. It delivers 25μs max conversion time, 150mW power dissipation at ±15V supplies, and supports ±5V/±10V bipolar or 0–10V/0–20V unipolar input ranges via pin strapping - used in high-accuracy industrial data acquisition systems requiring stable analog front-end performance.
For engineers reviewing the MX574ATD datasheet, MX574ATD pinout, MX574ATD application, or MX574ATD equivalent, this page provides verified technical context, real-world interface timing constraints, confirmed analog input configuration options, and validated alternative parts for precision 12-bit sampling in embedded control and signal processing designs.
Technical Context
The MX574ATD implements a 12-bit SAR architecture with on-chip 2.5kΩ DAC output impedance and zero-crossing comparator feedback loop. Its internal 10V reference exhibits 10ppm/°C drift and supports external loading up to 2mA when using ±15V supplies.
It operates in full-control mode (CE/CS/R/C coordinated) or stand-alone mode (R/C only), with configurable 8-/12-bit output formats via A0 and 12/8 pins. Digital outputs are three-state, compatible with 8-, 12-, and 16-bit buses, and feature 150ns max data access time under CL = 100pF load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - guarantees 1 LSB = 2.44mV (0–10V range) or 4.88mV (0–20V range), enabling sub-millivolt measurement fidelity. |
| Max Conversion Time | 25 μs - defines minimum sampling interval for real-time control loops operating up to ~40 kSPS. |
| Reference Output | 10.00 V ±20 mV - low-drift buried zener source eliminates need for external reference in most applications. |
| Power Dissipation | 150 mW at ±15V - enables operation without forced cooling in compact industrial modules. |
| Analog Input Ranges | ±5V, ±10V, 0–10V, or 0–20V - selectable via pin strapping (BIPOFF, 10VIN, 20VIN), no external op-amp required. |
| Digital Interface | Three-state parallel outputs (D0–D11), CE/CS/R/C control - supports direct connection to microcontroller address/data buses without glue logic. |
| Temperature Range | –40°C to +85°C (MX574ATD suffix) - qualified for extended industrial environments including factory automation and test equipment. |
Pinout & Package
MX574ATD is supplied in a 28-pin plastic DIP (PDIP) package with 0.6-inch width, compliant with JEDEC MS-001. Pin assignments are electrically identical across MAX174/MX574A/MX674A family members.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VL | Logic supply input (+4.5V to +5.5V) - powers digital core and output buffers independently of analog rails. |
| 2 | 12/8 | Data format select - low = 8-bit bus mode (MSB/LSB split), high = 12-bit word output. |
| 3 | CS | Chip-select input - must be low to enable device; used with CE for full bus control. |
| 4 | A0 | Byte address/short-cycle input - controls conversion length (low = 12-bit, high = 8-bit) and data byte selection during read. |
| 5 | R/C | Read/Convert control - low = start conversion, high = enable data read; supports stand-alone operation. |
| 6 | CE | Chip-enable input - high to activate; faster propagation than CS, preferred for timing-critical conversions. |
| 7 | VCC | Positive analog supply (+11.4V to +16.5V) - powers internal DAC, reference, and analog circuitry. |
| 8 | REFOUT | +10V reference output - low-noise, low-drift source for BIPOFF and REFIN; drives up to 2mA load with ±15V supplies. |
| 9 | AGND | Analog ground - reference point for internal reference and analog inputs; must be tied directly to system analog ground plane. |
| 10 | REFIN | Reference input - accepts external reference or connects to REFOUT for internal reference use. |
| 11 | VEE | Negative analog supply (–11.4V to –16.5V) - required for bipolar operation and internal DAC biasing. |
| 12 | BIPOFF | Bipolar offset input - tied to REFOUT for ±5V/±10V ranges; enables offset binary coding. |
| 13 | 10VIN | 10V-span analog input - used with AGND for 0–10V or ±5V operation; nominal input impedance = 5kΩ. |
| 14 | 20VIN | 20V-span analog input - used with AGND for 0–20V or ±10V operation; nominal input impedance = 10kΩ. |
| 15 | DGND | Digital ground - return path for VL and digital outputs; connected to AGND at single point per layout guidelines. |
| 16–27 | D0–D11 | Three-state data outputs - latched 12-bit result; output format depends on 12/8 and A0 states. |
| 28 | STS | Status output - high during conversion, low when data ready; usable as interrupt or polling signal. |
Key Features
| Feature | Design Value |
|---|---|
| Complete ADC with reference & clock | Eliminates 3–5 external components (ref IC, oscillator, decoupling only), reducing BOM count and layout area. |
| No missing codes over temperature | Guarantees monotonicity across –40°C to +85°C, critical for closed-loop control where code gaps cause instability. |
| 150ns max data access time | Enables direct interfacing to fast microcontrollers (e.g., ARM Cortex-M4 @ 100MHz) without wait states. |
| Precision low-TC reference (10ppm/°C) | Reduces system calibration frequency in field-deployed instruments; maintains accuracy without recalibration over seasonal temperature swings. |
| Monolithic BiCMOS construction | Lowers power by 3× vs. comparable bipolar ADCs, enabling higher channel density in multi-channel DAQ modules. |
Applications
| Industrial Process Monitoring | Automated Test Equipment (ATE) |
|---|---|
|
Use Scenario: Continuous voltage/current monitoring of PLC I/O modules in chemical plant control cabinets. IC Role / Device Role / Timing Role: Primary analog front-end ADC acquiring sensor signals at 20–40 kSPS with deterministic 25μs latency. Use Value: Internal 10V reference and ±5V input support eliminate external precision references and level-shifting circuitry, cutting board cost by ~$1.80/unit. |
Use Scenario: Digitizing analog stimulus responses in semiconductor wafer probers and benchtop parametric testers. IC Role / Device Role / Timing Role: High-fidelity sampling engine capturing transient waveforms with <±1 LSB INL error across temperature. Use Value: No missing codes guarantee accurate edge detection in pulse-width measurements, preventing false fail/retest in production screening. |
| Motor Drive Feedback | Medical Instrumentation |
|
Use Scenario: Sampling phase currents and DC bus voltage in servo drive inverters for field-oriented control (FOC). IC Role / Device Role / Timing Role: Isolated analog input conditioner feeding isolated ADC; MX574ATD performs final digitization with 12-bit resolution. Use Value: 0–10V unipolar range matches isolated amplifier outputs directly, avoiding gain-stage errors that degrade current loop accuracy. |
Use Scenario: ECG/EEG signal digitization in portable diagnostic devices requiring low-power, high-linearity acquisition. IC Role / Device Role / Timing Role: Low-noise ADC stage converting conditioned biopotential signals before digital filtering and analysis. Use Value: Buried-zener reference ensures <10μV/°C offset drift, preserving baseline stability in battery-powered devices over multi-hour clinical sessions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7892ARZ-10 | 12-bit SAR, 1.5μs conversion, external reference required, 5V single-supply operation | Higher speed but lacks integrated reference and bipolar input support; requires additional ref IC and level-shifting for ±10V inputs | Select when >500 kSPS sampling is needed and system already includes precision reference; not drop-in for MX574ATD's dual-supply bipolar use cases |
| ADS7822U | 12-bit SAR, 5μs conversion, internal reference, 3V–5.5V supply, SPI interface | Serial interface reduces pin count but adds software overhead; no native ±10V input capability - requires external attenuator | Prefer for space-constrained, low-pin-count designs where microcontroller SPI bandwidth suffices and bipolar range is not required |
Compared with AD7892ARZ-10 and ADS7822U, MX574ATD uniquely integrates a low-drift 10V reference, supports true ±10V analog inputs without external components, and operates from dual ±15V supplies - making it optimal for legacy industrial systems and high-accuracy analog front-ends where parallel bus compatibility and self-contained functionality are mandatory.
Availability
MX574ATD is available at Aetrix Electronics and suitable for industrial process monitoring, automated test equipment, and motor drive feedback systems requiring stable component supply with long-term lifecycle assurance.
Supply support for MX574ATD 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 and mixed-signal ICs for industrial, automotive, and communications markets.
The MX574A series belongs to Maxim's legacy precision data converter product line, designed specifically for industrial instrumentation and control systems demanding integrated reference, robust dual-supply operation, and guaranteed monotonicity over extended temperature ranges.
FAQ
What is the maximum conversion time specification for MX574ATD?
The MX574ATD has a maximum conversion time of 25 μs under standard conditions (±15V supplies, TA = +25°C). This value is guaranteed across its full operating temperature range of –40°C to +85°C, as documented in the Electrical Characteristics table for MX574A grade T/U devices. The 25 μs figure applies to full 12-bit conversions; 8-bit cycles complete in ≤18 μs.
Does MX574ATD require an external voltage reference?
No, MX574ATD does not require an external voltage reference. It incorporates a precision buried-zener reference generating 10.00 V ±20 mV with 10ppm/°C temperature coefficient. REFOUT can directly drive REFIN and BIPOFF pins, and supports up to 2mA of additional external load when operated from ±15V supplies - fully satisfying reference needs for most industrial applications.
Can MX574ATD interface directly with an 8-bit microcontroller bus?
Yes, MX574ATD supports direct 8-bit bus interfacing via its 12/8 and A0 pins. When 12/8 = low, the 12-bit result is split into two bytes: A0 = low enables the high byte (D8–D11 + D0–D3), and A0 = high enables the low byte (D4–D7 + four trailing zeros). This eliminates need for external latches or glue logic in 8-bit system designs.
What analog input ranges does MX574ATD support, and how are they selected?
MX574ATD supports four input ranges: 0–10V, 0–20V, ±5V, and ±10V. Selection is achieved through pin strapping: connect BIPOFF to REFOUT for bipolar modes; tie 10VIN or 20VIN to the analog signal source while grounding the unused span input. No external resistors or switches are needed - all configurations are hardware-defined and mutually exclusive.
Is MX574ATD pin-compatible with other members of the MAX174/MX574A/MX674A family?
Yes, MX574ATD shares identical pinout, package, and functional interface with MAX174 and MX674A. All three devices use the same 28-pin PDIP footprint and pin assignments. However, conversion speed differs: MAX174 = 8μs, MX674A = 15μs, MX574ATD = 25μs. System-level timing and thermal design must account for these differences despite mechanical and electrical pin compatibility.
MX574ATD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- -
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- -
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- -
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- -
- Supplier Device Package:
- -
- Mounting Type:
- -
- Grade:
- -
- Qualification:
- -
MX574ATD FAQ
1.How can I place an order for MX574ATD through Aetrix?
Please submit a Request for Quotation (RFQ) for MX574ATD 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 MX574ATD reliable?
The price and inventory of MX574ATD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MX574ATD is usually 5 days.
3.What payment methods are accepted for MX574ATD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MX574ATD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MX574ATD?
MX574ATD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MX574ATD 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 MX574ATD?
For technical support, including MX574ATD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MX574ATD requirements.
6.How does Aetrix verify that MX574ATD is sourced from the original manufacturer or authorized distributors?
All MX574ATD 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 MX574ATD meets industry standards.
7.What is the process for return or replacement of MX574ATD?
All MX574ATD units undergo pre-shipment inspection (PSI). If there is an issue with MX574ATD, 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 MX574ATD part is unused and in its original packaging.
Return procedure for MX574ATD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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