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Analog Devices Inc./Maxim Integrated MX574AKN+
- Part No.:
- MX574AKN+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-DIP (0.600", 15.24mm)
- Datasheet:
-
MX574AKN+.pdf
- Description:
- IC ADC 12BIT SAR 28DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,484
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Product details
Overview
MX574AKN+ from Maxim Integrated is a monolithic 12-bit successive-approximation ADC with integrated buried-zener voltage reference (10.00 V, ±10 ppm/°C), on-chip 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.
For engineers reviewing the MX574AKN+ datasheet, MX574AKN+ pinout, MX574AKN+ application, or MX574AKN+ equivalent, this page provides verified technical context, real-world interface timing constraints, analog input configuration options, and validated alternative parts for precision measurement designs requiring stable internal reference and microprocessor bus compatibility.
Technical Context
The MX574AKN+ implements a 12-bit SAR architecture with a 2.5 kΩ-output-impedance DAC and zero-crossing comparator. Conversion begins with the SAR set to mid-scale (2048), followed by bit-by-bit comparison against the analog input using resistor-ladder feedback networks tied to 10VIN or 20VIN pins.
It supports three operational modes: full-control (CS/CE/R/C coordinated), 8-/12-/16-bit bus interfacing (via 12/8 and A0 pins), and stand-alone (R/C-triggered with CS/A0 grounded). STS output signals conversion completion, enabling polling or interrupt-driven read cycles with 150 ns max data access time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - guarantees 4096 discrete output codes with no missing codes over temperature. |
| Max Conversion Time | 25 µs - defines minimum sampling period for continuous acquisition at ≤40 kSPS with guaranteed accuracy. |
| Reference Voltage | 10.00 V ±0.02 V (typ) - low-drift buried zener enables self-contained operation without external reference. |
| Input Ranges | ±5 V, ±10 V, 0–10 V, or 0–20 V - selectable via pin strapping; supports both offset-binary (bipolar) and straight-binary (unipolar) coding. |
| Power Dissipation | 150 mW at ±15 V - BiCMOS construction reduces thermal load vs. comparable bipolar ADCs by 3×. |
| Analog Input Impedance | 5 kΩ (10VIN), 10 kΩ (20VIN) - sets minimum drive capability required from front-end amplifier or signal conditioner. |
| Digital Interface | Three-state parallel outputs (D0–D11), CE/CS/R/C control - compatible with 8-, 12-, and 16-bit microprocessor buses without glue logic. |
Pinout & Package
MX574AKN+ is supplied in a 28-pin plastic DIP (dual in-line package) with 0.600-inch body width and standard through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VL | Logic supply input (+4.5 V to +5.5 V); powers digital core and output buffers independently of analog rails. |
| 2 | 12/8 | Data mode select - low enables 8-bit bus interface (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 mode timing coordination. |
| 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 initiates conversion, high enables data read; also supports stand-alone pulse-triggered operation. |
| 6 | CE | Chip-enable input - high enables device; faster propagation than CS and preferred for conversion start timing. |
| 7 | VCC | Positive analog supply (+11.4 V to +16.5 V); powers internal DAC, reference, and analog circuitry. |
| 8 | REFOUT | +10 V reference output - drives REFIN and BIPOFF; can source up to 2 mA with ±15 V supplies. |
| 9 | AGND | Analog ground reference - must be connected directly to system analog reference point; separates analog return path from digital noise. |
| 10 | REFIN | Reference input - tied to REFOUT for internal reference use; accepts external 10 V reference if higher stability required. |
| 11 | VEE | Negative analog supply (−11.4 V to −16.5 V); required for bipolar input operation and internal DAC biasing. |
| 12 | BIPOFF | Bipolar offset input - connected to REFOUT to establish zero-center point for ±5 V or ±10 V ranges. |
| 13 | 10VIN | 10 V span analog input - used with AGND for 0–10 V unipolar or ±5 V bipolar operation; 5 kΩ input impedance. |
| 14 | 20VIN | 20 V span analog input - used with AGND for 0–20 V unipolar or ±10 V bipolar operation; 10 kΩ input impedance. |
| 15 | DGND | Digital ground - tied to AGND at package for optimal noise rejection; maximum ±1 V differential allowed. |
| 16–27 | D0–D11 | Three-state digital output bus - latched 12-bit result; output format determined by 12/8 and A0 states during read cycle. |
| 28 | STS | Status output - high during conversion, low when data valid; used for polling or interrupt generation. |
Key Features
| Feature | Design Value |
|---|---|
| Complete ADC with reference and clock | Eliminates need for external timing generator or precision reference IC, reducing BOM count and layout complexity. |
| No missing codes over temperature | Guarantees monotonicity across full operating range (−40°C to +85°C), critical for closed-loop control and servo applications. |
| 150 ns max data access time | Enables direct connection to fast 8-bit microcontrollers (e.g., Intel 8080/8085 family) without wait-state insertion. |
| Precision low-TC reference (10 ppm/°C) | Ensures <±1 LSB drift over 0–70°C ambient, supporting high-accuracy calibration without periodic re-trimming. |
| Versatile analog input structure | Single device supports four input ranges via passive pin strapping-no external op-amps or level shifters needed. |
Applications
| Industrial Process Monitoring | Test & Measurement Equipment |
|---|---|
Use Scenario: Continuous monitoring of pressure, temperature, and flow sensors in PLC-based manufacturing lines. IC Role / Device Role / Timing Role: Primary 12-bit digitizer converting conditioned 4–20 mA or ±10 V sensor outputs into microcontroller-readable data. Use Value: Internal 10 V reference and ±10 V input support eliminate external scaling circuitry, reducing calibration drift and long-term maintenance. |
Use Scenario: Benchtop multimeters and automated test systems requiring repeatable 12-bit DC voltage measurements. IC Role / Device Role / Timing Role: High-stability ADC front-end with programmable input range selection for auto-ranging functionality. Use Value: No missing codes and ±1/2 LSB INL ensure traceable metrology-grade linearity without post-processing correction. |
| Electro-Mechanical Control Systems | High-Speed Data Acquisition |
Use Scenario: Position feedback and current sensing in servo motor drives and CNC motion controllers. IC Role / Device Role / Timing Role: Bipolar-input ADC capturing ±5 V encoder signals and ±10 V torque/current feedback with real-time STS handshake. Use Value: 25 µs conversion time enables ≥30 kSPS sampling within deterministic timing windows for PID loop execution. |
Use Scenario: Modular DAQ modules for vibration analysis and transient capture in rotating machinery diagnostics. IC Role / Device Role / Timing Role: Stand-alone mode operation triggered by external R/C pulses synchronized to mechanical events. Use Value: R/C-controlled conversion start and STS-driven data latch allow precise event-triggered sampling without CPU overhead. |
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 | 2 µs conversion time, 5 V single-supply operation, no internal reference - requires external 2.5 V reference and level-shifting for ±10 V inputs. | Optimized for low-power portable instrumentation; lacks bipolar input flexibility and integrated reference of MX574AKN+. | Select when ultra-fast sampling and single-supply simplicity outweigh need for self-contained bipolar operation. |
| MAX1166BCAP+ | Serial SPI interface, 1 MSPS throughput, internal 2.048 V reference, 16-pin TSSOP - no parallel bus or ±15 V analog supply support. | Targets space-constrained embedded systems with microcontroller SPI peripherals; incompatible with legacy 8-bit parallel buses. | Select when board area and digital interface simplicity are prioritized over analog supply flexibility and microprocessor bus compatibility. |
Compared with AD7892BRZ-1 and MAX1166BCAP+, the MX574AKN+ uniquely combines ±15 V analog supplies, integrated 10 V reference, pin-strappable bipolar/unipolar inputs, and parallel microprocessor interface-making it irreplaceable in legacy industrial control hardware requiring minimal external components and deterministic timing.
Availability
MX574AKN+ is available at Aetrix Electronics and suitable for industrial process monitoring, test & measurement equipment, electro-mechanical control systems, and high-speed data acquisition requiring stable component supply across extended temperature ranges.
Supply support for MX574AKN+ 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, communications, and computing applications.
The MX574A series belongs to Maxim's industry-standard complete ADC product line, designed specifically for applications demanding self-contained 12-bit digitization with minimal external components and robust operation in noisy industrial environments.
FAQ
What is the maximum operating temperature range for the MX574AKN+?
The MX574AKN+ is rated for operation from −40°C to +85°C (industrial grade). This is confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables under the MX574AJ/S and MX574AK/L/T/U ordering suffix definitions. The device maintains specified INL (±1/2 LSB), DNL (±1 LSB), and reference stability (±1 LSB unipolar offset change) across this full range.
Does the MX574AKN+ require external decoupling capacitors?
Yes, the MX574AKN+ requires external decoupling: a 4.7 µF tantalum capacitor in parallel with a 0.1 µF ceramic capacitor on each of VCC, VEE, and VL pins, all connected directly to AGND with short traces. This is explicitly mandated in the Power-Supply Bypassing section to prevent unstable output codes due to supply noise-especially critical for 12-bit resolution.
Can the MX574AKN+ operate with a single +5 V supply?
No, the MX574AKN+ cannot operate with only a +5 V supply. It requires dual analog supplies: VCC = +11.4 V to +16.5 V and VEE = −11.4 V to −16.5 V, plus VL = +4.5 V to +5.5 V. The internal DAC, reference, and bipolar input circuitry depend on these split rails; operation outside these ranges violates Absolute Maximum Ratings and causes functional failure.
How is the input range selected on the MX574AKN+?
The MX574AKN+ input range is selected exclusively by pin strapping: connecting BIPOFF to REFOUT enables bipolar mode (±5 V or ±10 V), while grounding BIPOFF enables unipolar mode (0–10 V or 0–20 V); selecting 10VIN or 20VIN as the active analog input pin determines the span. No register writes or software configuration is involved-this is a hardware-only setup per the Input Configurations section.
What is the purpose of the STS pin on the MX574AKN+?
The STS (Status) pin on the MX574AKN+ is an open-drain output that goes high during conversion and returns low when the 12-bit result is latched and ready for read. It enables polling or interrupt-driven data capture without fixed delay loops-critical for deterministic timing in real-time control systems. Its behavior is identical across all three variants (MAX174/MX574A/MX674A) and is validated in the Timing Characteristics tables.
MX574AKN+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-DIP (0.600", 15.24mm)
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- -
MX574AKN+ FAQ
1.How can I place an order for MX574AKN+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MX574AKN+ 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 MX574AKN+ reliable?
The price and inventory of MX574AKN+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MX574AKN+ is usually 5 days.
3.What payment methods are accepted for MX574AKN+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MX574AKN+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MX574AKN+?
MX574AKN+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MX574AKN+ 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 MX574AKN+?
For technical support, including MX574AKN+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MX574AKN+ requirements.
6.How does Aetrix verify that MX574AKN+ is sourced from the original manufacturer or authorized distributors?
All MX574AKN+ 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 MX574AKN+ meets industry standards.
7.What is the process for return or replacement of MX574AKN+?
All MX574AKN+ units undergo pre-shipment inspection (PSI). If there is an issue with MX574AKN+, 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 MX574AKN+ part is unused and in its original packaging.
Return procedure for MX574AKN+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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