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Analog Devices Inc./Maxim Integrated MAX1314ECM+
- Part No.:
- MAX1314ECM+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
MAX1314ECM+.pdf
- Description:
- IC ADC 12BIT SAR 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,462
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Product details
Overview
MAX1314ECM+ from Maxim Integrated is a 12-bit, 2-channel simultaneous-sampling analog-to-digital converter (ADC) with ±10V input range and ±16.5V fault-tolerant inputs. It achieves 0.9μs two-channel conversion time, 456ksps per-channel throughput at eight-channel mode, and features internal 2.5V reference, 20MHz parallel interface, and operation from +4.75V to +5.25V analog supply. It is used in high-precision industrial motor control and power-grid synchronization systems.
For engineers reviewing the MAX1314ECM+ datasheet, MAX1314ECM+ pinout, MAX1314ECM+ application, or MAX1314ECM+ equivalent, this page delivers verified electrical specs, channel-specific timing behavior, bipolar input interface requirements, and validated alternative ADCs for ±10V simultaneous-sampling designs.
Technical Context
The MAX1314ECM+ implements independent track-and-hold (T/H) circuitry per channel to enable true simultaneous sampling across its two analog inputs (CH0, CH1), with 8ns aperture delay and 100ps channel-to-channel T/H match. Its bipolar ±10V input range is supported by dedicated REF+, REF-, and COM pins generating a 2.5V differential reference centered at 2.6V.
Conversion is controlled via parallel 12-bit bus (D0–D11) with RD/WR/CS strobes and CONVST-triggered acquisition; clocking supports either internal 15MHz oscillator or external up to 20MHz. Power management includes shutdown mode drawing ≤10µA total supply current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for precise amplitude quantization in high-fidelity waveform capture. |
| Input Range | ±10V - enables direct connection to industrial sensors and transducers without external signal conditioning. |
| Simultaneous Channels | 2 - provides synchronized acquisition of voltage/current pairs in motor phase monitoring or differential sensor applications. |
| Conversion Time (2 ch) | 0.9μs - allows sub-microsecond interleaved sampling for real-time closed-loop control loops. |
| Throughput (2 ch) | 901ksps per channel - supports >450k samples/sec per input for high-bandwidth vibration analysis. |
| INL / DNL | ±1 LSB / ±0.9 LSB max - ensures monotonicity and end-point accuracy critical for calibration-sensitive measurement systems. |
| SFDR / SINAD | 84dBc / 71dB - maintains signal integrity at fIN = 500kHz, suitable for power-quality monitoring up to 50th harmonic. |
Pinout & Package
The MAX1314ECM+ is housed in a 48-pin 7mm × 7mm LQFP package with exposed thermal pad (RoHS-compliant, lead-free).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0, CH1 | Analog Input | Differential-capable bipolar inputs rated for ±10V full-scale and ±16.5V fault tolerance; require matched PCB routing for <100ps skew. |
| REF+, REF-, COM | Reference Network | Generate internal 2.5V differential reference (VREF+ − VREF− = 2.5V) centered at VCOM = 2.6V; bypassing with 2.2µF || 0.1µF is mandatory for stability. |
| INTCLK/EXTCLK | Mode Select | Logic-level input selecting internal 15MHz clock (tie to AVDD) or external clock (tie to AGND); determines timing budget for CONVST-to-EOC latency. |
| CONVST | Acquisition Trigger | Edge-triggered input initiating simultaneous track-and-hold; minimum low pulse width is 0.1µs for valid sampling window. |
| EOC, EOLC | Status Outputs | EOC pulses low after each conversion; EOLC falls only after final channel result is ready-enables precise multi-channel data capture sequencing. |
| D0–D11 | Parallel Data Bus | 12-bit bidirectional bus operating at 20MHz; tri-stated when RD = high or CS = high-requires proper bus contention management in microcontroller interfaces. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous 2-channel sampling | Enables phase-coherent acquisition of motor voltage/current or differential sensor pairs without inter-channel timing error. |
| ±16.5V fault-tolerant inputs | Protects against transient overvoltage events in industrial environments without external clamping diodes or series resistors. |
| Internal 2.5V reference with REF+/REF−/COM | Eliminates need for external precision reference IC while supporting ratiometric or absolute measurement configurations. |
| 100ps channel-to-channel T/H match | Ensures <0.01° phase error at 50kHz, critical for accurate power-factor and vector control calculations. |
| Shutdown mode (≤10µA) | Reduces system standby power in battery-backed or energy-conscious instrumentation without losing configuration state. |
Applications
| SIN/COS Position Encoder | Multiphase Motor Control |
|---|---|
Use Scenario: High-resolution angular position sensing using resolver feedback signals in servo drives. IC Role / Device Role / Timing Role: Simultaneously digitizes sine and cosine resolver outputs with matched aperture timing to compute exact rotor angle via arctangent. Use Value: 100ps T/H matching preserves encoder phase relationship, enabling <0.05° angular resolution at 10kHz mechanical speed. | Use Scenario: Real-time current and voltage sampling in three-phase inverter gate drivers for field-oriented control (FOC). IC Role / Device Role / Timing Role: Captures two phase currents (e.g., Ia, Ib) or DC-link voltage + current synchronously to reconstruct instantaneous power and torque. Use Value: 0.9μs two-channel conversion enables 100kHz PWM update rates with deterministic sampling latency for stable FOC loops. |
| Power-Grid Synchronization | Vibration and Waveform Analysis |
Use Scenario: Phase-locked acquisition of grid voltage and current waveforms for synchrophasor (PMU) applications. IC Role / Device Role / Timing Role: Simultaneously samples voltage and current at precisely aligned instants to compute real-time phase angle difference and frequency deviation. Use Value: ±10V input range accepts direct connection to instrument-grade CT/PT secondaries; 84dBc SFDR supports IEEE C37.118.1 Class P compliance. | Use Scenario: Multi-axis structural vibration monitoring in predictive maintenance systems using piezoelectric accelerometers. IC Role / Device Role / Timing Role: Acquires orthogonal acceleration channels (e.g., X/Y) with identical sampling instant to preserve cross-axis coherence for FFT-based modal analysis. Use Value: 71dB SINAD at 500kHz ensures accurate spectral content capture up to 250kHz, covering first 10 harmonics of rotating machinery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar simultaneous-sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7357BRUZ | 2-channel, 12-bit, 4.5MSPS serial LVDS output; no internal reference; requires external ±10V driver stage. | Better suited for high-speed streaming to FPGA; lacks integrated ±10V input protection and reference network. | Select when system demands >1MSPS/channel and has LVDS-capable processor; avoid if board space or BOM count must be minimized. |
| ADS8556IPMR | 6-channel, 16-bit, ±10V input, parallel interface; 1.25μs conversion; higher power (120mW vs. 290mW). | Offers higher resolution and more channels but slower throughput (333ksps/ch) and larger 64-pin HTQFP package. | Choose for precision metrology where 16-bit linearity outweighs speed; not drop-in due to pin count, footprint, and timing differences. |
Compared with AD7357BRUZ and ADS8556IPMR, the MAX1314ECM+ uniquely balances ±10V fault tolerance, integrated reference, compact LQFP footprint, and deterministic 0.9μs dual-channel latency-making it optimal for space-constrained industrial controllers requiring robust analog front-end integration.
Availability
MAX1314ECM+ is available at Aetrix Electronics and suitable for multiphase motor control, power-grid synchronization, and vibration analysis applications requiring stable component supply across extended temperature (-40°C to +85°C) and long product lifecycles.
Supply support for MAX1314ECM+ 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 high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and communications markets.
The MAX1304–MAX1314 family targets high-accuracy data acquisition in harsh environments, emphasizing simultaneous sampling integrity, wide input voltage ranges, and fault resilience for motor control and power monitoring.
FAQ
What is the maximum analog input voltage range supported by the MAX1314ECM+?
The MAX1314ECM+ supports a ±10V analog input range with ±16.5V fault-tolerant capability on CH0 and CH1. This allows direct interfacing with industrial sensors and transducers without external attenuation or clamping circuits, provided the common-mode voltage remains within the specified AGND-referenced limits.
Does the MAX1314ECM+ include an internal voltage reference?
Yes, the MAX1314ECM+ integrates a 2.5V bandgap reference with typical output of 2.500V (±25mV). It provides dedicated REF+, REF−, and COM pins to configure a differential reference network; external bypass capacitors (0.1µF and 2.2µF) are required for stable operation per the datasheet layout guidelines.
How many analog input channels does the MAX1314ECM+ have, and are they truly simultaneous?
The MAX1314ECM+ has two independent analog input channels (CH0 and CH1) with fully independent track-and-hold circuitry. Sampling is truly simultaneous-both channels acquire at the exact same instant upon CONVST assertion, with 100ps channel-to-channel T/H matching guaranteed across temperature.
What is the conversion time and throughput for two-channel operation of the MAX1314ECM+?
For two-channel operation, the MAX1314ECM+ completes conversion in 0.9μs with internal clocking and achieves 901ksps per channel throughput. With external clocking at 16.67MHz, throughput remains at 901ksps per channel, maintaining deterministic timing for real-time control loop execution.
Can the MAX1314ECM+ operate with separate analog and digital supply voltages?
Yes, the MAX1314ECM+ uses independent supplies: AVDD (+4.75V to +5.25V) for the analog section and DVDD (+2.7V to +5.25V) for the digital interface. AGND and DGND must be connected with low-impedance path; their potential difference is limited to ±0.3V to prevent ground bounce-induced errors in the MAX1314ECM+ conversion results.
MAX1314ECM+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 48-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 901k
- Number of Inputs:
- 2
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 2:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1314ECM+ FAQ
1.How can I place an order for MAX1314ECM+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1314ECM+ 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 MAX1314ECM+ reliable?
The price and inventory of MAX1314ECM+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1314ECM+ is usually 5 days.
3.What payment methods are accepted for MAX1314ECM+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1314ECM+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1314ECM+?
MAX1314ECM+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1314ECM+ 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 MAX1314ECM+?
For technical support, including MAX1314ECM+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1314ECM+ requirements.
6.How does Aetrix verify that MAX1314ECM+ is sourced from the original manufacturer or authorized distributors?
All MAX1314ECM+ 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 MAX1314ECM+ meets industry standards.
7.What is the process for return or replacement of MAX1314ECM+?
All MAX1314ECM+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1314ECM+, 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 MAX1314ECM+ part is unused and in its original packaging.
Return procedure for MAX1314ECM+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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