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Analog Devices Inc./Maxim Integrated MAX1309ECM+
- Part No.:
- MAX1309ECM+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
MAX1309ECM+.pdf
- Description:
- IC ADC 12BIT SAR 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,684
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Product details
Overview
MAX1309ECM+ from Maxim Integrated is a 12-bit, 4-channel simultaneous-sampling analog-to-digital converter (ADC) with ±5V input range and ±16.5V fault-tolerant inputs. It achieves 0.9μs two-channel conversion time, 456ksps per channel throughput at eight-channel operation, and features internal 2.5V reference, 20MHz parallel interface, and 48-pin LQFP package. It serves in multiphase motor control systems requiring synchronized voltage/current sampling across isolated power stages.
For engineers reviewing the MAX1309ECM+ datasheet, MAX1309ECM+ pinout, MAX1309ECM+ application, or MAX1309ECM+ equivalent, key selection criteria include bipolar ±5V input compatibility, channel-to-channel T/H match ≤100ps, 84dBc SFDR at 500kHz, internal/external clock flexibility, and fault-tolerant analog input protection for industrial power monitoring interfaces.
Technical Context
The MAX1309ECM+ implements independent track-and-hold (T/H) circuitry per channel to enable true simultaneous sampling-critical for phase-coherent acquisition in motor current loops and grid synchronization. Its analog front-end supports ±5V differential input ranges with ±16.5V fault tolerance, and internal biasing ensures stable operation without external level-shifting.
Conversion is controlled via a 12-bit bidirectional parallel bus operating at up to 20MHz, with timing governed by either internal 15MHz clock or external clock up to 20MHz. The device uses separate analog (AVDD = +4.75V to +5.25V) and digital (DVDD = +2.7V to +5.25V) supplies, enabling mixed-voltage system integration while maintaining 71dB SINAD and ±1 LSB INL performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for high-fidelity waveform capture in vibration analysis and power quality monitoring. |
| Input Range | ±5V - matches standard industrial sensor outputs and motor phase voltage levels without external scaling. |
| Simultaneous Channels | 4 - enables full three-phase current + neutral or voltage + current sampling in a single acquisition cycle. |
| Conversion Time | 0.9μs for two channels - supports >1MSps aggregate throughput for real-time closed-loop control at 10kHz update rates. |
| SFDR / THD | 84dBc / -86dBc at fIN = 500kHz - ensures clean spectral representation for harmonic distortion analysis in power-grid applications. |
| Reference | +2.5V internal or +2.0V to +3.0V external - allows precision calibration traceability or system-level reference sharing across multiple ADCs. |
| Supply Current | 54mA analog, 1.3mA digital - enables low-power operation in thermally constrained industrial controllers. |
Pinout & Package
MAX1309ECM+ is housed in a 48-pin 7mm × 7mm LQFP package with exposed thermal pad (RoHS-compliant, lead-free). Pin functions are identical across the MAX1308–MAX1310 family and validated per Maxim's official pin configuration diagram.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH3 | Analog Input Channels | Four independent ±5V-capable inputs with ±16.5V fault tolerance; each routed to dedicated T/H amplifier for simultaneous sampling. |
| AVDD, AGND (Pins 1,15,17 / 2,3,14,16,23) | Analog Power & Ground | Multiple AVDD/AGND pins reduce supply impedance and improve PSRR; must be decoupled locally with 0.1µF ceramic capacitors. |
| D0–D11 | 12-Bit Parallel Data Bus | Bidirectional interface supporting 20MHz read/write; tri-state when RD or CS high-enables direct connection to FPGA or microcontroller data buses. |
| CONVST, EOC, EOLC | Control & Status Signals | CONVST initiates conversion; EOC signals completion of any channel; EOLC marks end of last selected channel-enabling precise multi-channel sequencing. |
| REF, REFMS, REF+, COM, REF- | Reference Network | Supports internal 2.5V reference or external 2.0–3.0V source; REF+/REF-/COM form Kelvin-connected reference divider for stable 2.5V differential reference. |
| INTCLK/EXTCLK, CLK | Clock Selection & Input | INTCLK/EXTCLK pin selects internal 15MHz oscillator or external clock up to 20MHz-eliminates need for external crystal in space-constrained designs. |
Key Features
| Feature | Design Value |
|---|---|
| 4-channel simultaneous sampling | Enables phase-accurate acquisition across motor phases or power lines without time-skew-induced measurement error. |
| ±16.5V fault-tolerant inputs | Withstands transient overvoltage events common in industrial motor drives and grid-connected inverters without damage or latch-up. |
| 100ps channel-to-channel T/H match | Ensures <0.01° phase error at 50Hz-critical for accurate power-factor and reactive power calculations. |
| Internal 2.5V reference with 30ppm/°C drift | Reduces BOM count and layout complexity vs. external reference ICs while maintaining ±0.5LSB offset stability over temperature. |
| Power-saving shutdown mode | Reduces analog supply current to <10µA-ideal for wake-on-event architectures in energy-conscious industrial gateways. |
Applications
| Multiphase Motor Control | Multiphase Power Monitoring |
|---|---|
Use Scenario: Real-time sampling of three-phase currents and DC-link voltage in servo drives and VFDs. IC Role / Device Role / Timing Role: Simultaneous 4-channel ADC capturing Ia, Ib, Ic, and Vdc within one T/H aperture window to preserve vector integrity. Use Value: Eliminates inter-channel skew-induced torque ripple and enables field-oriented control (FOC) with <1% current reconstruction error. |
Use Scenario: Continuous monitoring of voltage, current, and neutral current in 4-wire industrial distribution panels. IC Role / Device Role / Timing Role: Synchronized acquisition across line-to-line and line-to-neutral paths to compute true RMS, harmonics, and unbalance metrics. Use Value: Achieves Class 0.5 accuracy per IEC 61000-4-30 for power quality analytics without external sample-and-hold circuits. |
| Power-Grid Synchronization | Vibration and Waveform Analysis |
Use Scenario: Phase-locked sampling of grid voltage and distributed generation output for anti-islanding protection in solar inverters. IC Role / Device Role / Timing Role: Simultaneous capture of grid VL1, VL2, VL3, and inverter output to compute phase angle difference with <100ns alignment. Use Value: Enables sub-cycle detection of islanding events (<20ms response) meeting IEEE 1547-2018 requirements. |
Use Scenario: High-fidelity acquisition of accelerometer and strain gauge signals in predictive maintenance edge nodes. IC Role / Device Role / Timing Role: 4-channel simultaneous sampling of orthogonal vibration axes to reconstruct spatial motion vectors without interpolation artifacts. Use Value: Preserves 50kHz bandwidth and 84dBc SFDR for reliable bearing fault frequency identification up to 3rd harmonic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-channel simultaneous-sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7656ASTZ | 16-bit resolution, ±10V input range, SPI interface only, no internal reference | Higher precision for metrology; requires external reference and level-shifting for ±5V systems | Choose AD7656ASTZ when 16-bit resolution and ±10V range are mandatory, and SPI interface aligns with host processor architecture. |
| ADS8588SIPM | 18-bit resolution, ±10V input, parallel + SPI interface, 2.5V internal reference, 1.25μs conversion | Superior dynamic range for high-end power analyzers; larger 64-pin HTQFP package increases PCB area | Choose ADS8588SIPM when 18-bit ENOB and integrated reference stability outweigh cost and size constraints in test equipment. |
Compared with MAX1309ECM+, AD7656ASTZ offers higher resolution but lacks internal reference and fault tolerance, while ADS8588SIPM provides superior noise performance at the cost of larger footprint and higher power-making MAX1309ECM+ optimal for cost-sensitive, space-constrained industrial motor control where ±5V range and robustness are primary.
Availability
MAX1309ECM+ is available at Aetrix Electronics and suitable for multiphase motor control, power-grid synchronization, and vibration analysis applications requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant sourcing.
Supply support for MAX1309ECM+ 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 MAX1308–MAX1310 family-including MAX1309ECM+-was engineered specifically for high-speed, synchronized data acquisition in harsh industrial environments where fault tolerance, timing coherence, and ±5V signal compatibility are essential.
FAQ
What is the maximum supported external clock frequency for MAX1309ECM+?
The MAX1309ECM+ accepts external clock frequencies from 0.1MHz to 20MHz, with guaranteed timing performance up to 20MHz. At 20MHz, it achieves 456ksps per channel throughput in 8-channel mode. Operation above 20MHz violates absolute maximum ratings and may cause metastability or data corruption on the parallel bus.
Does MAX1309ECM+ support unipolar input ranges?
No, MAX1309ECM+ is specified exclusively for ±5V bipolar input operation with ±16.5V fault tolerance. It belongs to the MAX1308–MAX1310 subgroup, which does not support 0 to +5V unipolar ranges-those are reserved for MAX1304–MAX1306 variants. Attempting unipolar configurations will violate input voltage specifications and risk damage.
Can MAX1309ECM+ operate with only the internal reference enabled?
Yes, MAX1309ECM+ operates fully with its internal +2.5V reference enabled-no external reference required. Bypass REF and REFMS with ≥0.01µF capacitors to AGND, connect MSV to AGND (bipolar mode), and tie INTCLK/EXTCLK to AGND for external clock or AVDD for internal clock. Internal reference drift is 30ppm/°C, supporting stable operation across -40°C to +85°C.
How many analog input channels does MAX1309ECM+ have, and are they all simultaneously sampled?
MAX1309ECM+ has four analog input channels (CH0–CH3), and all four are simultaneously sampled using independent track-and-hold circuitry. This guarantees zero time skew between channels-critical for vector-based calculations in motor control and power monitoring. Channel selection is software-configurable via the parallel interface.
What package type and thermal characteristics apply to MAX1309ECM+?
MAX1309ECM+ uses a 48-pin LQFP package (7mm × 7mm footprint) with exposed thermal pad. Its maximum power dissipation is 1818.2mW at +70°C, derating linearly above that temperature. Junction temperature must not exceed +150°C, and the device is rated for continuous operation from -40°C to +85°C ambient-validated per Maxim's extended temperature qualification.
MAX1309ECM+ 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):
- 680k
- Number of Inputs:
- 4
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 4:1
- 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:
- -
MAX1309ECM+ FAQ
1.How can I place an order for MAX1309ECM+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1309ECM+ 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 MAX1309ECM+ reliable?
The price and inventory of MAX1309ECM+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1309ECM+ is usually 5 days.
3.What payment methods are accepted for MAX1309ECM+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1309ECM+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1309ECM+?
MAX1309ECM+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1309ECM+ 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 MAX1309ECM+?
For technical support, including MAX1309ECM+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1309ECM+ requirements.
6.How does Aetrix verify that MAX1309ECM+ is sourced from the original manufacturer or authorized distributors?
All MAX1309ECM+ 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 MAX1309ECM+ meets industry standards.
7.What is the process for return or replacement of MAX1309ECM+?
All MAX1309ECM+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1309ECM+, 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 MAX1309ECM+ part is unused and in its original packaging.
Return procedure for MAX1309ECM+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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