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Analog Devices Inc./Maxim Integrated MX574ALEPI+
- Part No.:
- MX574ALEPI+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-DIP (0.600", 15.24mm)
- Datasheet:
-
MX574ALEPI+.pdf
- Description:
- IC ADC 12BIT SAR 28DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,360
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Product details
Overview
MX574ALEPI+ from Maxim Integrated is a monolithic 12-bit successive-approximation analog-to-digital converter (ADC) with integrated buried-zener voltage reference, on-chip clock, ±1/2 LSB integral nonlinearity, 25 µs max conversion time, and support for ±5V/±10V bipolar or 0–10V/0–20V unipolar input ranges - used in high-accuracy process control data acquisition systems.
For engineers reviewing the MX574ALEPI+ datasheet, MX574ALEPI+ pinout, MX574ALEPI+ application, or MX574ALEPI+ equivalent, this page delivers verified technical context, real-world interface timing constraints, confirmed analog input configuration options, and validated alternative parts for industrial signal conditioning and embedded measurement designs.
Technical Context
The MX574ALEPI+ implements a 12-bit SAR architecture with internal 10V buried-zener reference (10 ppm/°C drift), 2.5 kΩ DAC output impedance, and programmable 8-/12-bit conversion cycles. It supports three-state digital outputs via CS/CE/R/C control logic and operates with dual ±12V/±15V analog supplies plus +5V logic supply (VL).
Analog input flexibility is achieved through pin-strapped configurations: 10VIN/20VIN selection, BIPOFF connection to REFOUT for bipolar mode, and REFIN termination with 50 Ω resistor. Conversion timing is deterministic - 25 µs max for full 12-bit cycle, with STS status flag indicating completion and 150 ns max data access time in full-control mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - delivers 4096 discrete output codes with no missing codes over temperature. |
| Max Conversion Time | 25 µs - defines minimum sampling period for real-time control loops requiring ≤40 kSPS throughput. |
| Integral Nonlinearity | ±1/2 LSB (for MX574ALE grade) - ensures monotonicity and <0.012% full-scale linearity error in precision measurement. |
| Reference Output | 10.00 V ±2 mV (no load) - stable low-drift source enabling self-contained calibration without external reference ICs. |
| Input Ranges | Configurable via pins: ±5V / ±10V (bipolar) or 0–10V / 0–20V (unipolar) - eliminates need for external level-shifting circuitry. |
| Power Dissipation | 150 mW at ±15V - enables operation in thermally constrained industrial modules without forced cooling. |
| Digital Interface | 8-/12-/16-bit bus compatible via 12/8 and A0 pins - supports direct connection to legacy microcontrollers without glue logic. |
Pinout & Package
MX574ALEPI+ is supplied in a 28-pin plastic DIP (PDIP) package with 0.6-inch width, lead finish matte tin, and RoHS-compliant construction. Pin spacing is 0.1 inch, and the package meets JEDEC MS-001 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VL | +5V logic supply - powers internal digital logic and three-state buffers; must be decoupled with 0.1 µF ceramic + 4.7 µF tantalum. |
| 2 | 12/8 | Data mode select - low = 8-bit bus format (two-byte read), high = 12-bit word output; determines hardware data alignment. |
| 3 | CS | Chip-select input - active-low enable; must be low with CE high to initiate conversion or read in full-control mode. |
| 4 | A0 | Byte address/short-cycle input - controls 12-bit vs. 8-bit conversion length during start; selects MSB/LSB byte during read. |
| 5 | R/C | Read/Convert control - low = start conversion, high = enable data read; also serves as standalone trigger in simplified mode. |
| 6 | CE | Chip-enable input - active-high; primary timing-critical control signal for conversion initiation and data access. |
| 7 | VCC | +12V or +15V analog positive supply - powers internal DAC, comparator, and reference circuitry; requires dedicated AGND return. |
| 8 | REFOUT | +10V reference output - low-noise, low-drift zener source; drives BIPOFF and REFIN inputs; can source up to 2 mA with ±15V supplies. |
| 9 | AGND | Analog ground - reference node for internal reference and analog inputs; must be tied directly to system analog ground point. |
| 10 | REFIN | Reference input - accepts external reference or connects to REFOUT via 50 Ω resistor for gain calibration in unipolar/bipolar modes. |
| 11 | VEE | –12V or –15V analog negative supply - completes dual-supply rail for analog core; decoupling identical to VCC. |
| 12 | BIPOFF | Bipolar offset input - tied to REFOUT to establish zero-center point for ±5V/±10V operation; enables offset trimming via external resistor. |
| 13 | 10VIN | 10V span analog input - used with AGND for 0–10V unipolar or ±5V bipolar; input impedance = 5 kΩ (typical). |
| 14 | 20VIN | 20V span analog input - used with AGND for 0–20V unipolar or ±10V bipolar; input impedance = 10 kΩ (typical); keep capacitance minimal. |
| 15 | DGND | Digital ground - return path for VL and digital I/O; connected to AGND at single point near device to minimize noise coupling. |
| 16–27 | D0–D11 | Three-state data outputs - bit-aligned outputs (D0 = LSB, D11 = MSB); driven only when CE and R/C are asserted per timing table. |
| 28 | STS | Status output - open-drain, active-high flag signaling conversion completion; used for polling or interrupt generation. |
Key Features
| Feature | Design Value |
|---|---|
| Monolithic BiCMOS construction | Reduces power dissipation to 150 mW - enables integration into space- and thermal-constrained PLC I/O modules. |
| On-chip 10V buried-zener reference | 10 ppm/°C tempco and ±2 mV initial accuracy - eliminates external reference IC and associated layout complexity. |
| Pin-strappable input ranges | Hardware-selectable ±5V, ±10V, 0–10V, or 0–20V - removes need for external op-amp scaling networks in multi-range DAQ systems. |
| Three-state digital interface | CS/CE/R/C-controlled outputs compatible with 8-, 12-, and 16-bit buses - supports direct interfacing to legacy 8051, Z80, and 68K microcontrollers. |
| No missing codes over temperature | Guaranteed monotonicity across –40°C to +85°C - ensures reliable operation in industrial environments without software correction. |
| Stand-alone operation mode | R/C-only control with CS/A0 grounded and CE/12/8 high - simplifies integration into microcontroller-free sensor front-ends. |
Applications
| High-Accuracy Process Control | High-Speed Data Acquisition |
|---|---|
|
Use Scenario: Monitoring temperature, pressure, and flow in chemical reactor control loops requiring <0.02% full-scale accuracy. IC Role / Device Role / Timing Role: Primary ADC capturing analog sensor outputs at ≤40 kSPS with deterministic 25 µs conversion latency. Use Value: Internal reference and ±1/2 LSB INL eliminate need for periodic recalibration, reducing maintenance downtime in continuous-process plants. |
Use Scenario: Digitizing vibration signatures from accelerometers in predictive maintenance edge nodes. IC Role / Device Role / Timing Role: High-fidelity analog front-end ADC with 0–10V unipolar range and 150 ns data access for FPGA-based real-time FFT. Use Value: Pin-strappable input and 8-/12-bit flexible read mode allow dynamic resolution trade-offs without hardware changes. |
| Digital Signal Processing | Electro-Mechanical Systems |
|
Use Scenario: Converting feedback signals from servo motor current sensors in closed-loop motion controllers. IC Role / Device Role / Timing Role: Bipolar ±5V input ADC synchronized to PWM carrier via STS-driven interrupt for precise current sampling. Use Value: STS status flag enables tight timing alignment between analog capture and digital control execution, minimizing phase lag. |
Use Scenario: Reading position encoder analog outputs and potentiometer wiper voltages in robotic joint modules. IC Role / Device Role / Timing Role: Dual-supply ADC operating from ±15V rails with isolated AGND/DGND returns to reject motor drive noise. Use Value: 150 mW power envelope allows co-location with motor drivers on same PCB without thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX674ALEPI+ | 15 µs max conversion time, same pinout and reference architecture - faster sampling but identical interface and accuracy specs. | Preferred where ≥66 kSPS throughput required without changing PCB layout or firmware timing. | Select MX674ALEPI+ when system latency budget demands sub-20 µs conversion; retains full software/hardware compatibility. |
| AD7892BN-10 | 12-bit SAR ADC with 1 µs conversion, external reference required, SPI interface - no internal clock/reference, different serial protocol. | Suitable for new designs prioritizing speed and serial simplicity over analog integration; requires external 10V ref and level-shifting. | Choose AD7892BN-10 only for greenfield designs accepting added BOM cost and layout effort for higher speed and smaller footprint. |
Compared with MX574ALEPI+, MX674ALEPI+ offers 40% faster conversion while maintaining identical pinout, reference, and interface behavior - ideal for performance upgrades; AD7892BN-10 trades integration for speed and serial simplicity, demanding redesign of reference and digital interface layers.
Availability
MX574ALEPI+ is available at Aetrix Electronics and suitable for high-accuracy process control, high-speed data acquisition, and electro-mechanical systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MX574ALEPI+ 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 applications.
The MX574A series belongs to Maxim's industry-standard complete ADC family - engineered to reduce system-level design effort by integrating reference, clock, and interface logic into a single monolithic IC for ruggedized measurement systems.
FAQ
What is the maximum operating temperature range for the MX574ALEPI+?
The MX574ALEPI+ is rated for operation from –40°C to +85°C (industrial grade). This range is confirmed in the Electrical Characteristics tables for the MX574ALE suffix, where parameters like INL and full-scale calibration error are guaranteed across the full span. The device uses a ceramic-filled plastic DIP package qualified to JEDEC JESD22-A108 reliability standards for extended thermal cycling.
Does the MX574ALEPI+ require external clock circuitry?
No, the MX574ALEPI+ does not require external clock circuitry. It contains a fully integrated on-chip clock generator optimized for its SAR conversion architecture. The typical internal clock frequency is approximately 600 kHz, enabling the specified 25 µs maximum 12-bit conversion time. External clocking is neither supported nor necessary for standard operation of the MX574ALEPI+.
Can the MX574ALEPI+ operate with ±12V analog supplies instead of ±15V?
Yes, the MX574ALEPI+ supports both ±12V and ±15V analog supplies. Absolute Maximum Ratings specify VCC and VEE operating ranges as +11.4V to +16.5V and –11.4V to –16.5V respectively. Electrical Characteristics tables confirm all key parameters - including conversion time, INL, and reference output - are guaranteed under ±12V conditions. Power dissipation remains within 150 mW limit at ±12V.
How is bipolar input range configured on the MX574ALEPI+?
Bipolar input range on the MX574ALEPI+ is configured by connecting the BIPOFF pin to REFOUT and selecting either 10VIN or 20VIN as the analog input terminal. For ±5V operation, apply signal between AGND and 10VIN; for ±10V, use AGND and 20VIN. A 50 Ω resistor must be placed between REFOUT and REFIN to complete the bipolar offset network - details are shown in Figure 15 of the MX574A datasheet.
What is the purpose of the STS pin on the MX574ALEPI+?
The STS (Status) pin on the MX574ALEPI+ is an open-drain, active-high output that goes high at conversion start and returns low upon completion. It provides hardware synchronization for microcontrollers - enabling polling or interrupt-driven data reads without fixed delay loops. Its timing is tightly specified: STS delay from CE is 100–250 ns, and it remains asserted for the full 25 µs conversion window, ensuring deterministic interface timing for the MX574ALEPI+.
MX574ALEPI+ 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:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
MX574ALEPI+ FAQ
1.How can I place an order for MX574ALEPI+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MX574ALEPI+ 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 MX574ALEPI+ reliable?
The price and inventory of MX574ALEPI+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MX574ALEPI+ is usually 5 days.
3.What payment methods are accepted for MX574ALEPI+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MX574ALEPI+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MX574ALEPI+?
MX574ALEPI+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MX574ALEPI+ 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 MX574ALEPI+?
For technical support, including MX574ALEPI+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MX574ALEPI+ requirements.
6.How does Aetrix verify that MX574ALEPI+ is sourced from the original manufacturer or authorized distributors?
All MX574ALEPI+ 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 MX574ALEPI+ meets industry standards.
7.What is the process for return or replacement of MX574ALEPI+?
All MX574ALEPI+ units undergo pre-shipment inspection (PSI). If there is an issue with MX574ALEPI+, 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 MX574ALEPI+ part is unused and in its original packaging.
Return procedure for MX574ALEPI+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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