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Analog Devices Inc./Maxim Integrated MAX1318ECM+T
- Part No.:
- MAX1318ECM+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
MAX1318ECM+T.pdf
- Description:
- IC ADC 14BIT SAR 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,302
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Product details
Overview
The MAX1318ECM+T from Maxim Integrated is a 2-channel, 14-bit simultaneous-sampling analog-to-digital converter (ADC) with independent track/hold per channel, 0 to +5V unipolar input range, ±6.0V fault-tolerant inputs, and 2.5µs conversion time for two channels. It delivers 250ksps throughput per channel at full 8-channel operation and supports motor control and power-grid synchronization applications requiring precise phase-coherent sampling.
For engineers reviewing the MAX1318ECM+T datasheet, MAX1318ECM+T pinout, MAX1318ECM+T application, or MAX1318ECM+T equivalent, key selection criteria include simultaneous dual-channel sampling capability, ±6V fault tolerance on CH0/CH1, internal 2.5V reference, 48-pin LQFP package, and support for external clock up to 12.5MHz with 16.6MHz parallel interface timing.
Technical Context
This ADC employs dedicated track/hold amplifiers per input channel to preserve inter-channel phase alignment-critical for multiphase waveform analysis. Its architecture supports both internal (10MHz) and external clocking, with configurable conversion start via CONVST edge-triggering and end-of-conversion signaling via EOC/EOLC outputs.
The device integrates a 14-bit bidirectional parallel interface (D0–D13), programmable channel enable via ALLON and configuration register, and flexible reference options: internal 2.5V ±0.025V or external 2.0V–3.0V. Analog and digital supplies are fully isolated (AVDD: +4.75V to +5.25V; DVDD: +2.7V to +5.25V), enabling noise-sensitive industrial signal acquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - delivers 16,384 distinct output codes for high-precision voltage digitization |
| Input Range | 0 to +5V unipolar - compatible with standard industrial sensor outputs and PLC analog I/O |
| Fault Tolerance | ±6.0V on CH0/CH1 - protects against transient overvoltage without external clamping circuitry |
| Conversion Time | 2.5µs for two channels - enables real-time closed-loop control in motor drive feedback paths |
| Throughput Rate | 250ksps per channel (8-channel mode) - sustains high-fidelity waveform capture across all active inputs |
| INL / DNL | ±1.5 LSB / ±1 LSB - ensures monotonicity and minimal code-width variation for accurate calibration |
| SNR / SINAD | 77dB / 76.5dB at 100kHz - supports high-fidelity measurement of low-distortion AC signals |
| Supply Current | 46mA analog, ≤1.6mA digital - enables efficient thermal design in space-constrained embedded systems |
Pinout & Package
MAX1318ECM+T is housed in a 48-pin LQFP package (7mm × 7mm footprint) with exposed pad for thermal enhancement. Pin assignments are optimized for analog/digital isolation: AVDD/AGND pins grouped on one side, DVDD/DGND on another, and analog inputs (CH0, CH1) adjacent to MSV, REFMS, and reference bypass nodes (REF+, COM, REF−).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0, CH1 | Analog Input Channel 0 / 1 | Dedicated differential-capable inputs supporting simultaneous sampling with 50ps channel-to-channel T/H matching |
| MSV | Midscale Voltage Bypass | Requires 2.2µF + 0.1µF capacitor to AGND for stable unipolar mid-scale reference point |
| REFMS, REF | Internal Reference Bypass / Input | Supports internal 2.5V reference (bypass REFMS with 0.1µF); REF accepts external 2.0–3.0V precision reference |
| REF+, COM, REF− | Reference Decoupling Nodes | Require specific capacitor network (2.2µF || 0.1µF between REF+/REF−; 2.2µF || 0.1µF from COM to AGND) |
| CONVST | Convert-Start Input | Rising-edge triggered; initiates simultaneous sampling and conversion sequence for all enabled channels |
| EOC / EOLC | End-of-Conversion Outputs | EOC pulses low after each conversion; EOLC asserts low only after final channel conversion completes |
| D0–D13 | 14-Bit Parallel Data Bus | Bidirectional interface operating at up to 16.6MHz; high-impedance when RD or CS is high |
| INTCLK/EXTCLK | Clock Mode Select | Tied to AVDD for internal 10MHz clock; tied to AGND to enable external clock on CLK pin |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous dual-channel sampling | Preserves phase coherence between CH0 and CH1 for accurate vector-based power calculations |
| ±6.0V fault-tolerant analog inputs | Eliminates need for external TVS diodes or series resistors in harsh industrial environments |
| On-chip 2.5V reference (±0.025V) | Reduces BOM count and layout complexity vs. discrete reference ICs; stable over temperature (30ppm/°C) |
| Configurable channel enable (ALLON) | Allows dynamic power scaling-disabling unused channels cuts analog supply current by ~20mA |
| Shutdown mode (≤2µA total) | Enables ultra-low-power sleep states in battery-backed monitoring systems without losing configuration |
| 10MHz T/H input bandwidth | Supports accurate digitization of fast transients (e.g., inverter switching edges) without external buffering |
Applications
| Multiphase Motor Control | Power-Grid Synchronization |
|---|---|
Use Scenario: Real-time acquisition of phase currents and back-EMF in 3-phase PMSM drives. IC Role / Device Role / Timing Role: Simultaneous sampling of two current-sense channels (e.g., IA and IB) to reconstruct third current (IC) with zero phase skew. Use Value: Enables field-oriented control (FOC) with <50ps inter-channel timing mismatch, reducing torque ripple by >15% versus sequential-sampling ADCs. | Use Scenario: Phase-angle measurement between voltage and current waveforms in smart grid protection relays. IC Role / Device Role / Timing Role: Dual-channel synchronous sampling of VT and CT secondary outputs for precise zero-crossing detection and phasor calculation. Use Value: Achieves <0.1° phase error at 50/60Hz due to matched aperture delay, meeting IEEE C37.118.1 synchrophasor accuracy requirements. |
| Power-Factor Monitoring | Vibration Analysis |
Use Scenario: Continuous monitoring of active/reactive power in industrial energy meters with harmonic distortion up to 50th order. IC Role / Device Role / Timing Role: High-SFDR (90dBc) dual-channel acquisition captures fundamental and harmonic content simultaneously for FFT-based power quality analysis. Use Value: Delivers 76.5dB SINAD at 100kHz, enabling accurate THD and PF calculation under nonlinear load conditions. | Use Scenario: Edge-triggered capture of bearing vibration signatures in predictive maintenance sensors. IC Role / Device Role / Timing Role: Fast 2.5µs dual-channel conversion enables 400ksps effective sampling rate for broadband mechanical resonance detection (1–10kHz). Use Value: Supports 14-bit resolution at 250ksps/channel, resolving sub-micron displacement in accelerometer-fed condition monitoring systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 14-bit simultaneous-sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8556IPMR | 6-channel, 16-bit, ±10V input range; requires external reference; higher power (75mA analog) | Targeted at high-accuracy test equipment-not optimized for compact motor control PCBs | Select when 16-bit resolution and bipolar input are mandatory; avoid if unipolar 0–5V and low power are primary constraints. |
| AD7606BSTZ | 8-channel, 16-bit, ±10V input; integrated reference; SPI interface only (no parallel bus) | Designed for data acquisition systems with microcontroller host-lacks direct FPGA/ASIC parallel interfacing | Choose for SPI-based designs needing higher channel count; not suitable where 14-bit parallel interface timing is fixed in legacy hardware. |
Compared with ADS8556IPMR and AD7606BSTZ, the MAX1318ECM+T offers optimal balance of 14-bit precision, 0–5V unipolar compatibility, 48-pin LQFP footprint, and 16.6MHz parallel interface-making it uniquely suited for cost-sensitive, space-constrained motor control and power monitoring modules requiring deterministic timing.
Availability
MAX1318ECM+T is available at Aetrix Electronics and suitable for multiphase motor control, power-grid synchronization, and power-factor monitoring applications requiring stable component supply, long-term industrial lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX1318ECM+T 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 MAX1316–MAX1318 family was engineered specifically for high-fidelity, phase-coherent multichannel data acquisition in real-time power electronics and motor control systems-emphasizing simultaneous sampling, fault tolerance, and robust reference architecture.
FAQ
What is the maximum fault voltage the MAX1318ECM+T analog inputs can withstand?
The MAX1318ECM+T analog inputs (CH0 and CH1) are rated for ±6.0V fault tolerance relative to AGND. This specification allows the device to survive transient overvoltages-such as inductive kickback or ESD events-without damage or performance degradation, eliminating the need for external protection components in many industrial installations. The MAX1318ECM+T maintains this rating across its full operating temperature range (-40°C to +85°C).
Does the MAX1318ECM+T require an external reference voltage, or does it include an internal one?
The MAX1318ECM+T includes a precision internal 2.5V reference (±0.025V, 30ppm/°C) that can be used directly by connecting REFMS and REF appropriately and bypassing with recommended capacitors. An external reference (2.0V to 3.0V) may also be applied to REF for higher accuracy or system-level reference sharing. The MAX1318ECM+T does not require an external reference to operate, simplifying design and reducing BOM cost.
How many analog input channels does the MAX1318ECM+T support, and what is their sampling behavior?
The MAX1318ECM+T supports exactly two analog input channels (CH0 and CH1), each with a dedicated track/hold amplifier. These channels sample simultaneously on the rising edge of CONVST, preserving inter-channel phase relationship with 50ps matching. Unlike multiplexed ADCs, the MAX1318ECM+T does not share T/H circuitry-ensuring true concurrent acquisition critical for vector-based measurements in motor control and power analytics.
What package type and pin count does the MAX1318ECM+T use, and is it RoHS-compliant?
The MAX1318ECM+T is supplied in a 48-pin LQFP package (7mm × 7mm body, 0.5mm pitch) with exposed thermal pad. It is RoHS-compliant and halogen-free, meeting IPC/JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3) requirements. The package supports standard reflow profiles and provides adequate thermal dissipation for continuous operation at full throughput (46mA analog supply current).
Can the MAX1318ECM+T operate with separate analog and digital supply voltages, and what are the valid ranges?
Yes, the MAX1318ECM+T requires independent analog and digital supplies: AVDD must be +4.75V to +5.25V (typical +5V), while DVDD operates from +2.7V to +5.25V (typical +3V). This separation minimizes digital noise coupling into sensitive analog circuitry. The device specifies strict AGND–DGND potential difference limits (±0.3V), requiring single-point star grounding per layout guidelines in the datasheet to maintain specified SNR and THD performance.
MAX1318ECM+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 48-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 455k
- 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:
- -
MAX1318ECM+T FAQ
1.How can I place an order for MAX1318ECM+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1318ECM+T 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 MAX1318ECM+T reliable?
The price and inventory of MAX1318ECM+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1318ECM+T is usually 5 days.
3.What payment methods are accepted for MAX1318ECM+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1318ECM+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1318ECM+T?
MAX1318ECM+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1318ECM+T 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 MAX1318ECM+T?
For technical support, including MAX1318ECM+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1318ECM+T requirements.
6.How does Aetrix verify that MAX1318ECM+T is sourced from the original manufacturer or authorized distributors?
All MAX1318ECM+T 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 MAX1318ECM+T meets industry standards.
7.What is the process for return or replacement of MAX1318ECM+T?
All MAX1318ECM+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1318ECM+T, 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 MAX1318ECM+T part is unused and in its original packaging.
Return procedure for MAX1318ECM+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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