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Analog Devices Inc./Maxim Integrated MX574AJP+
- Part No.:
- MX574AJP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
MX574AJP+.pdf
- Description:
- IC ADC 12BIT SAR 28PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,406
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Product details
Overview
MX574AJP+ from Maxim Integrated is a monolithic 12-bit successive-approximation ADC with on-chip buried-zener reference (10V ±2mV), 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.
For engineers reviewing the MX574AJP+ datasheet, MX574AJP+ pinout, MX574AJP+ application, or MX574AJP+ equivalent, key selection criteria include its 12-bit no-missing-codes performance over temperature, ±1/2 LSB integral nonlinearity (MX574AK/L/T/U grade), 10ppm/°C reference TC, and compatibility with 8-/12-/16-bit microprocessor buses using CS/CE/R/C control logic.
Technical Context
The MX574AJP+ employs a SAR architecture with a 2.5kΩ-output DAC and zero-crossing comparator. Conversion begins with the SAR set to half-scale; successive bits are determined by comparing the analog input against dynamically adjusted DAC outputs-1/4, 3/4, etc.-until all 12 bits are resolved and latched.
It supports three operational modes: full-control (using CS, CE, R/C), stand-alone (R/C only, with CS/A0 grounded), and flexible data read formats (12-bit word or split 8-bit + 4-bit nibbles via 12/8 and A0 pins). Internal reference output (REFOUT) drives REFIN and BIPOFF with up to 2mA load capability under ±15V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - guarantees 4096 discrete output codes with no missing codes across operating temperature range. |
| Max Conversion Time | 25 μs - defines minimum sampling period for real-time 40 kSPS operation in continuous mode. |
| Reference Voltage | 10.00 V ±2 mV (typ) - low-drift buried-zener source enabling ±5V/±10V bipolar or 0–10V/0–20V unipolar input scaling without external reference. |
| Integral Nonlinearity | ±1/2 LSB (MX574AK/L/T/U grade) - ensures end-point accuracy within ±0.012% of full scale for precision measurement applications. |
| Power Dissipation | 150 mW at ±15V - enables thermally stable operation without heatsinking in compact industrial modules. |
| Analog Input Impedance | 5 kΩ (10VIN), 10 kΩ (20VIN) - sets minimum drive strength requirement for front-end amplifiers or signal conditioners. |
| Data Access Time | 150 ns (max) - determines minimum bus cycle timing for 8-bit microprocessor interfaces operating above 6.7 MHz. |
Pinout & Package
MX574AJP+ is packaged in a 28-pin plastic DIP (Dual In-line Package) with 0.6-inch body width and standard through-hole mounting. Pin spacing follows JEDEC MS-001, compatible with industry-standard sockets and PCB footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VL) | Logic supply input | +5V digital interface rail; must be decoupled locally to DGND to prevent noise coupling into data outputs. |
| 3 (CS) | Chip-select input | Active-low enable; when low and CE high, permits conversion start or data read based on R/C state. |
| 4 (A0) | Byte address/short-cycle control | During conversion: low = 12-bit, high = 8-bit; during read: selects MSB byte (A0=0) or LSB nibble (A0=1). |
| 5 (R/C) | Read/Convert control | High = data read enabled; low = conversion initiated; also serves as standalone mode trigger when CS=A0=low. |
| 6 (CE) | Chip-enable input | Active-high primary control; faster than CS for timing-critical conversion starts; must be asserted with R/C low. |
| 8 (REFOUT) | Internal reference output | 10V zener-derived source; drives REFIN and BIPOFF; can supply up to 2mA additional load under ±15V supplies. |
| 9 (AGND) | Analog ground reference | Primary ground for internal reference and analog circuitry; must be tied directly to system analog ground point. |
| 10 (REFIN) | Reference input | Accepts REFOUT or external reference; connected via 50Ω resistor for bipolar offset calibration. |
| 11 (VEE) | Negative analog supply | -12V or -15V rail; powers analog core; requires local 4.7μF + 0.1μF decoupling to AGND. |
| 12 (BIPOFF) | Bipolar offset input | Connected to REFOUT for ±5V/±10V operation; adjusts zero point via external trimmer or fixed 50Ω resistor. |
| 13 (10VIN) | 10V-span analog input | Input node for 0–10V unipolar or ±5V bipolar; 5kΩ input impedance; must be shielded and kept short to AGND. |
| 14 (20VIN) | 20V-span analog input | Input node for 0–20V unipolar or ±10V bipolar; 10kΩ input impedance; 20VIN pin must remain open if 10VIN used. |
| 15 (DGND) | Digital ground | Ground return for VL, CE, CS, R/C, A0, 12/8, and D0–D11; joined to AGND at single point near package. |
| 16–27 (D0–D11) | Three-state digital outputs | 12-bit parallel data bus; outputs float when CE low or R/C low; driven to valid logic levels only after conversion completes. |
| 28 (STS) | Status output | Open-drain active-high signal indicating conversion in progress; used for polling or interrupt generation. |
Key Features
| Feature | Design Value |
|---|---|
| Complete ADC with integrated clock and reference | Eliminates need for external crystal oscillator, PLL, or precision voltage reference IC-reducing BOM count and layout area. |
| 12-bit resolution with no missing codes over temperature | Ensures monotonicity and guaranteed code transitions across -40°C to +85°C, critical for closed-loop control feedback paths. |
| Configurable input ranges via pin strapping | Supports four standard ranges (0–10V, 0–20V, ±5V, ±10V) without external op-amps or gain-switching circuitry. |
| BiCMOS construction | Reduces power consumption by 3× versus comparable bipolar ADCs-enabling higher channel density in space-constrained modules. |
| Microprocessor-compatible interface | Direct connection to 8-, 12-, or 16-bit buses using standard CS/CE/R/C handshaking-no glue logic required. |
Applications
| Industrial Process Monitoring | Test & Measurement Equipment |
|---|---|
|
Use Scenario: Continuous sampling of pressure, temperature, and flow sensor outputs in PLC-based automation systems. IC Role / Device Role / Timing Role: Primary analog-to-digital converter interfacing 4–20mA transducers and RTDs via precision signal conditioning. Use Value: ±1/2 LSB INL and 10ppm/°C reference stability ensure <0.01% full-scale error drift over ambient temperature swings in factory environments. |
Use Scenario: Digitizing calibrated analog signals in benchtop multimeters and automated test equipment (ATE) fixtures. IC Role / Device Role / Timing Role: High-fidelity front-end ADC capturing DC and low-frequency AC waveforms with minimal quantization noise. Use Value: 25μs conversion time enables >35 kSPS sustained sampling while maintaining 12-bit linearity-sufficient for 16-bit effective resolution with averaging. |
| Electro-Mechanical Control Systems | High-Speed Data Acquisition Modules |
|
Use Scenario: Real-time position and current feedback in servo motor drives and CNC motion controllers. IC Role / Device Role / Timing Role: Bipolar-input ADC acquiring ±10V encoder and current-sense amplifier outputs synchronized to PWM cycles. Use Value: Pin-strapped ±10V range and 10VIN/20VIN dual-input structure eliminate external level-shifting, reducing component count and signal path errors. |
Use Scenario: Modular DAQ cards for vibration analysis, acoustic monitoring, and transient capture in predictive maintenance systems. IC Role / Device Role / Timing Role: Standalone-mode ADC triggered by external event pulses (via R/C) for burst-mode sampling of fast transients. Use Value: STS output provides precise conversion-complete timing; 150ns access time allows direct connection to FPGA or microcontroller GPIO without wait states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7874BNZ | 12-bit SAR ADC with 10μs conversion time, external reference required, 28-pin DIP but different pinout and logic interface (no R/C mode). | Requires external 10V reference and clock; lacks built-in reference and stand-alone R/C operation-increases BOM and layout complexity. | Select AD7874BNZ only when sub-10μs conversion speed is mandatory and board space allows for reference/clock support components. |
| MAX1166BCPP+ | 12-bit SAR ADC with 3.5μs conversion, internal reference, SPI interface, 20-pin TSSOP-no parallel bus or DIP option. | Serial interface reduces pin count but eliminates direct microprocessor bus connection; incompatible with legacy 8-bit parallel systems. | Choose MAX1166BCPP+ for new designs prioritizing speed and small footprint, not for drop-in replacement in existing parallel-bus architectures. |
Compared with AD7874BNZ and MAX1166BCPP+, the MX574AJP+ uniquely combines monolithic integration (reference + clock), parallel microprocessor interface, DIP packaging, and configurable bipolar/unipolar input-all in a single 28-pin package optimized for industrial retrofit and legacy system upgrades.
Availability
MX574AJP+ is available at Aetrix Electronics and suitable for industrial process monitoring, test & measurement equipment, and electro-mechanical control systems requiring stable component supply, long-lifecycle support, and RoHS-compliant through-hole assembly.
Supply support for MX574AJP+ 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, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MX574AJP+ belongs to Maxim's industry-standard complete ADC family designed for applications demanding self-contained, low-power, high-accuracy digitization without external timing or reference components.
FAQ
What is the maximum operating temperature range for the MX574AJP+?
The MX574AJP+ is rated for operation from -40°C to +85°C (industrial grade). This range is confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables for MX574AJ/S variants, which include the JP+ suffix denoting the plastic DIP package with industrial temperature qualification.
Does the MX574AJP+ require external clock circuitry?
No, the MX574AJP+ does not require external clock circuitry. It integrates a precision internal clock generator optimized for its SAR conversion cycle-enabling full functionality with only decoupling capacitors and fixed resistors, as stated in the General Description and Functional Diagram sections.
Can the MX574AJP+ operate with ±12V power supplies instead of ±15V?
Yes, the MX574AJP+ supports ±12V supplies per the Absolute Maximum Ratings and Electrical Characteristics tables. VCC and VEE operating ranges are specified as 11.4V to 16.5V and -11.4V to -16.5V respectively, confirming safe and functional operation at ±12V with appropriate decoupling.
How is bipolar input range configured on the MX574AJP+?
Bipolar input range on the MX574AJP+ is configured by connecting the BIPOFF pin to REFOUT (via 50Ω resistor) and selecting either 10VIN (for ±5V) or 20VIN (for ±10V) as the analog input node-details are provided in the Input Configurations section and Figure 15 of the datasheet.
What is the purpose of the STS pin on the MX574AJP+?
The STS (Status) pin on the MX574AJP+ is an open-drain output that goes high during conversion and returns low upon completion. It enables polling or interrupt-driven data read timing-ensuring the host processor accesses D0–D11 only after conversion finishes, preventing invalid data reads.
MX574AJP+ 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:
- -
MX574AJP+ FAQ
1.How can I place an order for MX574AJP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MX574AJP+ 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 MX574AJP+ reliable?
The price and inventory of MX574AJP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MX574AJP+ is usually 5 days.
3.What payment methods are accepted for MX574AJP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MX574AJP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MX574AJP+?
MX574AJP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MX574AJP+ 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 MX574AJP+?
For technical support, including MX574AJP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MX574AJP+ requirements.
6.How does Aetrix verify that MX574AJP+ is sourced from the original manufacturer or authorized distributors?
All MX574AJP+ 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 MX574AJP+ meets industry standards.
7.What is the process for return or replacement of MX574AJP+?
All MX574AJP+ units undergo pre-shipment inspection (PSI). If there is an issue with MX574AJP+, 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 MX574AJP+ part is unused and in its original packaging.
Return procedure for MX574AJP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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