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Analog Devices Inc./Maxim Integrated MX574AJN
- Part No.:
- MX574AJN
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-DIP (0.600", 15.24mm)
- Datasheet:
-
MX574AJN.pdf
- Description:
- IC ADC 12BIT SAR 28DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,547
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Product details
Overview
MX574AJN from Maxim Integrated is a monolithic 12-bit successive-approximation analog-to-digital converter (ADC) with integrated buried-zener voltage reference and on-chip clock. It delivers ±1 LSB integral nonlinearity, 25μs maximum 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 process control systems requiring stable DC measurement.
For engineers reviewing the MX574AJN datasheet, MX574AJN pinout, MX574AJN application, or MX574AJN equivalent, this page provides verified technical context, package mapping to 28-pin PDIP, confirmed timing parameters for full-control and stand-alone modes, and validated alternatives for 12-bit industrial ADC replacement.
Technical Context
The MX574AJN employs a successive approximation register (SAR) architecture with a 2.5kΩ-output DAC and zero-crossing comparator. Its internal 10V buried-zener reference achieves 10ppm/°C temperature coefficient and supports external loading up to 2mA when using ±15V supplies.
It features dual-mode digital interface: full microprocessor control via CS/CE/R/C logic with 12/8 and A0 configuration pins, or stand-alone operation triggered solely by R/C edge transitions. Conversion start and data read are strictly separated by status flag STS, with guaranteed access time of 150ns (TYP) and 200ns (MAX) at +25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes with no missing codes over full temperature range. |
| Max Conversion Time | 25μs - defines minimum sampling period for DC-coupled or low-bandwidth signal acquisition. |
| INL (Integral Nonlinearity) | ±1 LSB (MX574AJ/S grade) - ensures monotonicity and ≤0.024% full-scale error in calibrated systems. |
| Reference Output | 10.00V ±2mV (no load) - precision internal source eliminates need for external reference in most applications. |
| Power Dissipation | 150mW at ±15V - enables operation without heatsinking in compact industrial modules. |
| Analog Input Ranges | Configurable via pin strapping: ±5V, ±10V, 0–+10V, or 0–+20V - supports direct connection to transducer outputs without external scaling. |
| Digital Interface | Three-state parallel outputs (D0–D11), 8-/12-/16-bit bus compatible - simplifies integration with legacy microcontrollers and FPGAs. |
Pinout & Package
MX574AJN is packaged in a 28-pin plastic dual in-line package (PDIP) with 0.6-inch width, standard through-hole mounting, and JEDEC MS-001 compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VL | Logic supply input (+4.5V to +5.5V) - powers output buffers and control logic independently from analog rails. |
| 2 | 12/8 | Data format select - low = 8-bit bus mode (two-byte read), high = 12-bit word output. |
| 3 | CS | Chip-select input - must be low to enable device; used with CE/R/C for full microprocessor control. |
| 4 | A0 | Byte address/short-cycle input - controls 12-bit vs. 8-bit conversion length and selects MSB/LSB byte during read. |
| 5 | R/C | Read/Convert control - low = initiate conversion, high = enable data read; also supports stand-alone mode. |
| 6 | CE | Chip-enable input - high to activate; faster than CS for conversion start timing. |
| 7 | VCC | Positive analog supply (+11.4V to +16.5V) - powers internal DAC, reference, and analog circuitry. |
| 8 | REFOUT | +10V reference output - low-drift buried-zener source usable for external biasing or calibration. |
| 9 | AGND | Analog ground - reference point for REFOUT, REFIN, BIPOFF, and analog inputs; must be tied to system analog ground. |
| 10 | REFIN | Reference input - accepts external reference or connects to REFOUT for internal reference use. |
| 11 | VEE | Negative analog supply (−16.5V to −11.4V) - required for bipolar input operation and internal DAC swing. |
| 12 | BIPOFF | Bipolar offset input - tied to REFOUT to configure ±5V or ±10V input range. |
| 13 | 10VIN | 10V-span analog input - used with AGND for 0–+10V or ±5V operation; 5kΩ input impedance. |
| 14 | 20VIN | 20V-span analog input - used with AGND for 0–+20V or ±10V operation; 10kΩ input impedance. |
| 15 | DGND | Digital ground - return path for VL, CE, CS, R/C, A0, 12/8, and D0–D11; connected to AGND at single point. |
| 16–27 | D0–D11 | Three-state data outputs - latched 12-bit result; output format determined by 12/8 and A0 states. |
| 28 | STS | Status output - high during conversion, low when data ready; used for polling or interrupt generation. |
Key Features
| Feature | Design Value |
|---|---|
| Complete ADC with reference and clock | Eliminates 4–6 external components (oscillator, reference IC, decoupling only required), reducing BOM count and layout area. |
| No missing codes over temperature | Guarantees monotonic transfer function from −40°C to +85°C, critical for closed-loop control stability. |
| 150ns max data access time | Enables direct interfacing with 8-MHz Z80 or 12-MHz 8051 microcontrollers without wait states. |
| Versatile analog input structure | Single device supports four input ranges via resistor strapping - avoids redesign when sensor output range changes. |
| Monolithic BiCMOS construction | Reduces power by 3× vs. comparable bipolar ADCs, enabling higher channel density in multi-channel DAQ modules. |
Applications
| Industrial Process Monitoring | Test & Measurement Equipment |
|---|---|
|
Use Scenario: Continuous monitoring of 4–20mA current loop outputs from pressure, temperature, and flow sensors in PLC-based control cabinets. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned analog signals; operates in full-control mode with CS/CE handshake and STS-polling for deterministic latency. Use Value: ±1 LSB INL and 10ppm/°C reference drift ensure <0.025% total measurement uncertainty across 0–70°C ambient, meeting ISA-S84 SIL-2 requirements. |
Use Scenario: Digitizing calibrated DC voltage standards and thermocouple outputs in benchtop multimeters and calibrators. IC Role / Device Role / Timing Role: High-accuracy front-end ADC with internal reference; configured for ±10V bipolar range and 12-bit resolution. Use Value: Buried-zener reference and trimmed internal resistors eliminate external trimming, reducing calibration labor by ~30% per unit. |
| Electro-Mechanical Control Systems | High-Speed Data Acquisition Modules |
|
Use Scenario: Position feedback acquisition from resolvers and LVDTs in servo drives and CNC motion controllers. IC Role / Device Role / Timing Role: Analog input conditioner and digitizer; uses stand-alone R/C-triggered mode for deterministic conversion timing synchronized to PWM cycles. Use Value: 25μs conversion time allows ≥35kHz sampling of position waveforms while maintaining 12-bit fidelity for closed-loop bandwidths up to 5kHz. |
Use Scenario: Multi-channel transient capture in power quality analyzers measuring harmonics and voltage sags on 50/60Hz distribution lines. IC Role / Device Role / Timing Role: Channel ADC in multiplexed architecture; leverages 8-bit bus mode for efficient microcontroller readback of MSB/LSB pairs. Use Value: Pin-strappable 0–+10V range matches standard CT/PT secondary outputs, eliminating external level-shifting amplifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7892BN-10 | 12-bit SAR ADC with 1μs conversion time, external reference required, 24-pin SOIC package. | Higher speed but requires external 10V reference and op-amp driver; unsuitable for space-constrained designs needing integrated reference. | Select when sampling rate >100kSPS is required and board area permits additional support components. |
| ADS7800KP | 12-bit SAR ADC with 10μs conversion, internal reference, 28-pin PLCC package, +5V-only digital supply. | Lower power (80mW), but PLCC package requires reflow assembly; lacks ±15V analog rail compatibility. | Select for new designs targeting surface-mount manufacturing and lower thermal load, where analog supply is limited to ±12V. |
Compared with MX574AJN, AD7892BN-10 offers faster throughput but increases system complexity with external reference dependency, while ADS7800KP reduces power and simplifies digital supply but sacrifices through-hole compatibility and ±15V operational margin.
Availability
MX574AJN is available at Aetrix Electronics and suitable for industrial process monitoring, test equipment calibration, electro-mechanical control systems, and high-speed data acquisition modules requiring stable component supply across extended temperature ranges.
Supply support for MX574AJN 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 semiconductor company specializing in high-performance analog and mixed-signal ICs for industrial, automotive, and communications applications.
The MAX174/MX574A/MX674A family was designed as industry-standard, complete 12-bit ADCs targeting cost-sensitive, high-accuracy industrial measurement systems where integration of reference, clock, and interface logic reduces design risk and time-to-market.
FAQ
What is the operating temperature range for the MX574AJN?
The MX574AJN is specified for operation from −40°C to +85°C (industrial grade). This is confirmed by the "MX574AJ" suffix in the ordering information and Electrical Characteristics tables showing performance validated across that full range, including ±1 LSB INL and 10ppm/°C reference drift.
Does the MX574AJN require external clock circuitry?
No, the MX574AJN does not require external clock circuitry. It integrates a precision on-chip clock generator optimized for its SAR conversion cycle. The typical internal clock rates are ~600kHz for MX574A, enabling the specified 25μs maximum conversion time without any external timing components.
Can the MX574AJN operate with a single +5V digital supply and dual ±12V analog supplies?
Yes, the MX574AJN supports VL = +5V (±0.5V), VCC = +12V or +15V, and VEE = −12V or −15V. The Absolute Maximum Ratings and Electrical Characteristics tables explicitly list these supply combinations, and power dissipation remains within 150mW at ±12V, making it suitable for systems with mixed-supply architectures.
How is the analog input range selected on the MX574AJN?
The MX574AJN analog input range is selected by pin strapping: connecting BIPOFF to REFOUT enables ±5V or ±10V bipolar mode; leaving BIPOFF open and grounding AGND to 10VIN or 20VIN selects 0–+10V or 0–+20V unipolar mode. No software or register writes are needed - configuration is purely hardware-based.
What is the purpose of the STS pin on the MX574AJN?
The STS (Status) pin on the MX574AJN is an active-high open-drain output that goes high at conversion start and returns low when conversion completes and data is valid on D0–D11. It enables polling or interrupt-driven readback, ensuring the host processor accesses stable data without timing guesswork - a key feature for deterministic real-time control loops using MX574AJN.
MX574AJN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-DIP (0.600", 15.24mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 40k
- 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 ~ 16.5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 28-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
MX574AJN FAQ
1.How can I place an order for MX574AJN through Aetrix?
Please submit a Request for Quotation (RFQ) for MX574AJN 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 MX574AJN reliable?
The price and inventory of MX574AJN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MX574AJN is usually 5 days.
3.What payment methods are accepted for MX574AJN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MX574AJN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MX574AJN?
MX574AJN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MX574AJN 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 MX574AJN?
For technical support, including MX574AJN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MX574AJN requirements.
6.How does Aetrix verify that MX574AJN is sourced from the original manufacturer or authorized distributors?
All MX574AJN 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 MX574AJN meets industry standards.
7.What is the process for return or replacement of MX574AJN?
All MX574AJN units undergo pre-shipment inspection (PSI). If there is an issue with MX574AJN, 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 MX574AJN part is unused and in its original packaging.
Return procedure for MX574AJN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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