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Analog Devices Inc./Maxim Integrated MX574AKP+
- Part No.:
- MX574AKP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
MX574AKP+.pdf
- Description:
- IC ADC 12BIT W/REF 28-PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,083
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Product details
Overview
MX574AKP+ from Maxim Integrated is a monolithic 12-bit successive-approximation ADC with integrated buried-zener reference (10V ±2mV), internal clock, and BiCMOS construction. It delivers 25μs max conversion time, ±1/2 LSB integral nonlinearity at +25°C, and supports ±5V/±10V bipolar or 0–10V/0–20V unipolar input ranges via pin strapping - used in high-accuracy process control and industrial data acquisition systems.
For engineers reviewing the MX574AKP+ datasheet, MX574AKP+ pinout, MX574AKP+ application, or MX574AKP+ equivalent, key selection criteria include its 150mW power dissipation at ±15V supplies, 150ns max data access time, 10ppm/°C reference TC, and compatibility with 8-/12-/16-bit microprocessor buses using CS/CE/R/C control logic.
Technical Context
The MX574AKP+ employs a SAR architecture with a 2.5kΩ-output DAC and zero-crossing comparator. Conversion is initiated by R/C low pulse in stand-alone mode or CE/CS-controlled full bus interface, with STS indicating busy status. Input settling is managed via external 5kΩ (10VIN) or 10kΩ (20VIN) series resistors and internal reference routing to REFIN/BIPOFF.
It operates across three supply domains: VCC (+12V/+15V), VEE (−12V/−15V), and VL (+5V), with separate AGND and DGND pins requiring single-point connection per layout guidelines. Analog input impedance is 3–7kΩ (10VIN) or 6–14kΩ (20VIN); digital outputs are three-state with 0.4V VOL (1.6mA sink) and 4V VOH (500μA source).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - guarantees 1 LSB = 2.44mV (0–10V) or 4.88mV (0–20V/±10V) quantization step size |
| Max Conversion Time | 25 μs - defines minimum sampling period for 40 kSPS continuous acquisition |
| Integral Nonlinearity | ±1/2 LSB (TA = +25°C, K/L/T/U grade) - ensures monotonicity and no missing codes over temperature |
| Reference Output | 10.00 V ±2 mV (no load) - provides stable, low-drift excitation for precision analog front-ends |
| Power Dissipation | 150 mW (VCC = +15V, VEE = −15V) - enables operation without forced cooling in compact industrial enclosures |
| Analog Input Range | Selectable ±5V, ±10V, 0–10V, or 0–20V via pin strapping - eliminates external level-shifting circuitry |
| Data Access Time | 150 ns (CL = 100pF) - supports direct interfacing to 8-MHz microprocessor buses without wait states |
Pinout & Package
MX574AKP+ is supplied in a 28-pin plastic DIP (PDIP) package with 0.6-inch width, compliant with JEDEC MS-001. Pin spacing is 0.1 inch; body dimensions are 1.375 × 0.600 × 0.220 inches.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VL | Logic supply input - powers digital core and output buffers at +5V; must be decoupled locally |
| 2 | 12/8 | Data format select - low = 8-bit bus mode (two-byte read), high = 12-bit word output |
| 3 | CS | Chip-select input - active-low enable; ignored unless CE is also asserted |
| 4 | A0 | Byte address/short-cycle control - sets 12-bit (low) or 8-bit (high) conversion length during start |
| 5 | R/C | Read/Convert control - low = initiate conversion, high = enable data read |
| 6 | CE | Chip-enable input - active-high primary control; faster than CS for timing-critical applications |
| 7 | VCC | Positive analog supply - +12V or +15V; requires 4.7μF + 0.1μF decoupling to AGND |
| 8 | REFOUT | +10V reference output - drives REFIN and BIPOFF; can source up to 2mA with ±15V supplies |
| 9 | AGND | Analog ground reference - must connect directly to system analog ground point |
| 10 | REFIN | Reference input - tied to REFOUT for internal reference use; accepts external 10V sources |
| 11 | VEE | Negative analog supply - −12V or −15V; decoupled separately to AGND |
| 12 | BIPOFF | Bipolar offset input - connected to REFOUT to configure ±5V/±10V input range |
| 13 | 10VIN | 10V-span analog input - used with 5kΩ series resistor for 0–10V or ±5V operation |
| 14 | 20VIN | 20V-span analog input - used with 10kΩ series resistor for 0–20V or ±10V operation |
| 15 | DGND | Digital ground - bonded to AGND at single point under IC to minimize noise coupling |
| 16–27 | D0–D11 | Three-state data outputs - latched 12-bit result; output format controlled by A0 and 12/8 |
| 28 | STS | Status output - high during conversion, low when data is valid and ready to read |
Key Features
| Feature | Design Value |
|---|---|
| Complete ADC with on-chip clock and reference | Eliminates need for external crystal oscillator, PLL, or precision voltage reference ICs |
| No missing codes over temperature | Guarantees monotonic transfer function from −40°C to +85°C, critical for closed-loop control |
| Pin-strappable input ranges | Supports four standard analog input configurations without external op-amps or resistor networks |
| BiCMOS construction | Reduces power vs. bipolar-only ADCs by 3× while maintaining 12-bit linearity and speed |
| Microprocessor-compatible interface | Direct connection to 8-/12-/16-bit buses using standard CE/CS/R/C handshaking protocol |
Applications
| Industrial Process Monitoring | Test & Measurement Equipment |
|---|---|
Use Scenario: Continuous monitoring of pressure, temperature, and flow sensor outputs in PLC-based manufacturing lines. IC Role / Device Role / Timing Role: Primary analog-to-digital converter acquiring 12-bit samples at ≤40 kSPS with calibrated offset and full-scale accuracy. Use Value: ±1/2 LSB INL and 10ppm/°C reference drift ensure measurement repeatability across ambient temperature swings without recalibration. |
Use Scenario: Digitizing analog waveforms in benchtop oscilloscopes and automated test systems requiring traceable accuracy. IC Role / Device Role / Timing Role: High-fidelity signal capture stage with selectable input ranges and minimal external component count. Use Value: 0–20V unipolar and ±10V bipolar modes support wide dynamic range inputs; 150ns access time enables tight CPU timing integration. |
| Motor Control Feedback | Energy Metering Systems |
Use Scenario: Sampling current and voltage feedback signals in servo drives and inverters for real-time torque and speed regulation. IC Role / Device Role / Timing Role: Precision ADC capturing synchronized phase currents with low latency and deterministic conversion timing. Use Value: STS-driven interrupt capability allows precise synchronization with PWM cycles; bipolar ±5V input matches isolated amplifier outputs. |
Use Scenario: Measuring AC line voltage and current in Class 0.5 smart meters with long-term stability requirements. IC Role / Device Role / Timing Role: High-accuracy front-end digitizer referenced to internal 10V zener for consistent gain calibration. Use Value: Buried-zener reference provides <10ppm/°C TC and low noise - meeting IEC 62053-22 long-term drift specifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7874KNZ | 12-bit SAR ADC with 10μs conversion time, external reference required, 24-pin SOIC package | Requires external 10V reference and clock; lacks pin-strappable input ranges | Choose when faster conversion (100 kSPS) is needed and board space permits extra components |
| MAX1167BCAP+ | 16-bit SAR ADC, 10μs conversion, internal reference, 20-pin TSSOP, lower power (12mW) | Higher resolution but slower effective throughput due to longer conversion; no ±10V input support | Choose for higher precision in low-noise DC measurements where ±10V range is not required |
Compared with AD7874KNZ and MAX1167BCAP+, the MX574AKP+ uniquely integrates reference, clock, and input-range configuration in a single PDIP package - reducing BOM count and layout complexity for industrial DAQ systems needing ±10V or 0–20V inputs.
Availability
MX574AKP+ is available at Aetrix Electronics and suitable for industrial process control, test equipment, motor feedback, and energy metering applications requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for MX574AKP+ 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 markets.
The MX574A family was engineered as a drop-in replacement for industry-standard 12-bit ADCs, emphasizing monolithic integration, low power, and flexible analog input configuration for ruggedized data acquisition systems.
FAQ
What is the maximum operating temperature range for the MX574AKP+?
The MX574AKP+ is rated for operation from −40°C to +85°C (industrial grade). This is confirmed in the Electrical Characteristics table under "Operating Temperature Ranges" for MX_74AJE/KE/LE suffixes, which match the K-grade designation in the MX574AKP+ ordering code.
Does the MX574AKP+ require external passive components for basic operation?
Yes - the MX574AKP+ requires external decoupling capacitors (4.7μF tantalum + 0.1μF ceramic per supply rail) and fixed resistors (50Ω between REFOUT and REFIN/BIPOFF for bipolar operation). No external clock or reference IC is needed, as both are integrated.
How does the MX574AKP+ handle bipolar versus unipolar input configurations?
The MX574AKP+ selects input range via pin strapping: connecting BIPOFF to REFOUT enables ±5V or ±10V bipolar mode; leaving BIPOFF open or grounded configures 0–10V or 0–20V unipolar mode. The 10VIN/20VIN pins determine span, and coding is offset binary (bipolar) or straight binary (unipolar).
Can the MX574AKP+ interface directly with an 8-bit microcontroller bus?
Yes - setting the 12/8 pin low configures the MX574AKP+ for 8-bit bus operation. Data is split into two bytes: A0 low reads the 8 MSBs at even addresses; A0 high reads the 4 LSBs followed by four zeros at odd addresses - no software masking required.
What is the purpose of the STS pin on the MX574AKP+?
The STS (Status) pin on the MX574AKP+ is an open-drain output that goes high during conversion and returns low when the 12-bit result is latched and ready for readout. It enables interrupt-driven or polled data acquisition without timing guesswork.
MX574AKP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-LCC (J-Lead)
- 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-PLCC (11.51x11.51)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MX574AKP+ FAQ
1.How can I place an order for MX574AKP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MX574AKP+ 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 MX574AKP+ reliable?
The price and inventory of MX574AKP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MX574AKP+ is usually 5 days.
3.What payment methods are accepted for MX574AKP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MX574AKP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MX574AKP+?
MX574AKP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MX574AKP+ 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 MX574AKP+?
For technical support, including MX574AKP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MX574AKP+ requirements.
6.How does Aetrix verify that MX574AKP+ is sourced from the original manufacturer or authorized distributors?
All MX574AKP+ 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 MX574AKP+ meets industry standards.
7.What is the process for return or replacement of MX574AKP+?
All MX574AKP+ units undergo pre-shipment inspection (PSI). If there is an issue with MX574AKP+, 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 MX574AKP+ part is unused and in its original packaging.
Return procedure for MX574AKP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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