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Analog Devices Inc./Maxim Integrated MAX1326ECM+
- Part No.:
- MAX1326ECM+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
MAX1326ECM+.pdf
- Description:
- IC ADC 14BIT SAR 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:248
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Product details
Overview
The MAX1326ECM+ from Maxim Integrated is a 2-channel, 14-bit simultaneous-sampling analog-to-digital converter (ADC) with ±10V input range and ±16.5V fault-tolerant inputs. It achieves 2.5µs conversion time for two channels and delivers 250ksps throughput per channel. Featuring independent track/hold circuitry, 10MHz input bandwidth, and internal +2.5V reference, it serves high-precision industrial data acquisition in motor control and power-grid monitoring.
For engineers reviewing the MAX1326ECM+ datasheet, MAX1326ECM+ pinout, MAX1326ECM+ application, or MAX1326ECM+ equivalent, key selection criteria include bipolar ±10V full-scale range, channel-to-channel T/H matching of 50ps, 76.5dB SINAD at 100kHz, 48-pin LQFP package compatibility, and support for internal/external clock and reference configurations.
Technical Context
This ADC employs independent track-and-hold amplifiers per channel to preserve phase coherence across sampled signals-critical for multiphase waveform analysis. Its architecture supports simultaneous sampling of both channels with aperture delay of 16ns (typ) and aperture-jitter of 50ps RMS.
The device uses a 14-bit parallel interface operating up to 16.6MHz, with configurable digital supply (2.7V–5.25V) separate from analog supply (4.75V–5.25V). Internal reference (2.475V–2.525V) and external reference support (2.0V–3.0V) enable flexible system-level voltage scaling and calibration strategies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - delivers 16,384 discrete output codes for high dynamic-range measurement |
| Input Range | ±10V - supports direct interfacing with industrial sensors and transducers without signal conditioning |
| Conversion Time (2 ch) | 2.5µs - enables real-time closed-loop control in fast-response systems like servo drives |
| Throughput Rate | 250ksps per channel - sustains synchronized dual-channel acquisition at 500kSPS aggregate rate |
| INL / DNL | ±1.5 LSB / ±1 LSB - ensures monotonicity and minimal code-width variation across full scale |
| SINAD @ 100kHz | 76.5dB - corresponds to ~12.7 effective bits, suitable for precision power quality analysis |
| Fault Tolerance | ±16.5V - protects against transient overvoltage events in harsh electrical environments |
Pinout & Package
Package: 48-pin LQFP (7mm × 7mm footprint), RoHS-compliant, rated for -40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0, CH1 | Analog Input Channels | Dedicated ±10V bipolar inputs with independent track/hold; tolerate ±16.5V faults |
| AVDD, AGND | Analog Power Supply | 4.75V–5.25V analog rail; requires local 0.1µF bypassing to AGND for noise suppression |
| DVDD, DGND | Digital Power Supply | 2.7V–5.25V isolated digital rail; decoupling critical for parallel bus integrity |
| REF, REFMS, REF+, REF-, COM | Reference Interface | Supports internal 2.5V reference or external 2.0V–3.0V source; multi-capacitor bypassing required |
| D0–D13, RD, WR, CS, EOC, EOLC | 14-bit Parallel Interface | 16.6MHz bidirectional bus with handshake signals; EOC asserts low for one clock cycle post-conversion |
| CONVST, INTCLK/EXTCLK, CLK, SHDN, ALLON | Control Inputs | Edge-triggered CONVST initiates simultaneous sampling; SHDN reduces current to <2µA in shutdown |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous Sampling | Preserves phase relationship between CH0 and CH1 with 50ps channel-to-channel T/H matching |
| Bipolar ±10V Input Range | Direct connection to industrial ±10V sensor outputs eliminates level-shifting circuitry |
| ±16.5V Fault Tolerance | Withstands transient surges common in motor drive and grid-monitoring applications |
| No Calibration Required | Factory-trimmed INL/DNL and gain/offset specs eliminate field calibration overhead |
| Flexible Reference Options | Internal +2.5V reference or external 2.0V–3.0V source supports system-level accuracy optimization |
Applications
| Multiphase Motor Control | Power-Grid Synchronization |
|---|---|
Use Scenario: Real-time acquisition of back-EMF and current waveforms from two motor phases under PWM switching noise. IC Role / Device Role / Timing Role: Simultaneous-sampling ADC capturing synchronized voltage/current pairs for vector control algorithms. Use Value: 50ps T/H matching ensures accurate phase-angle calculation essential for field-oriented control. | Use Scenario: Monitoring line voltage and current across two phases of a three-phase distribution network. IC Role / Device Role / Timing Role: Dual-channel digitizer providing time-aligned samples for zero-crossing detection and frequency tracking. Use Value: ±10V input range accepts standard PT/CT outputs directly; ±16.5V fault tolerance prevents damage during lightning-induced surges. |
| Vibration Analysis | Power-Factor Monitoring |
Use Scenario: Capturing acceleration signals from two orthogonal axes on rotating machinery using piezoelectric sensors. IC Role / Device Role / Timing Role: High-fidelity dual-channel ADC enabling cross-channel spectral correlation and modal analysis. Use Value: 76.5dB SINAD at 100kHz supports resolution of low-amplitude harmonics critical for early fault detection. | Use Scenario: Measuring active/reactive power by simultaneously sampling voltage and current in single-phase utility metering. IC Role / Device Role / Timing Role: Bipolar-input ADC acquiring synchronized V/I pairs to compute instantaneous power and displacement angle. Use Value: No missing codes and ±1 LSB DNL ensure consistent energy integration over long billing cycles. |
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, SPI interface, 500ksps/ch, higher power (95mW) | Higher resolution but serial interface increases host CPU load; no parallel bus for deterministic timing | Select when 16-bit resolution and >250ksps/ch throughput outweigh parallel interface needs |
| AD7606BSTZ | 8-channel, 16-bit, ±10V input, parallel interface, 200ksps/ch, integrated analog front-end | More channels but lower per-channel throughput; includes PGA and anti-alias filter | Select when system requires ≥4 channels or built-in signal conditioning, accepting 50ksps lower throughput |
Compared with MAX1326ECM+, ADS8556IPMR trades parallel simplicity for higher resolution and channel count via SPI, while AD7606BSTZ offers greater integration at the cost of reduced dual-channel speed-making MAX1326ECM+ optimal for compact, timing-critical dual-sensor systems requiring minimal latency and deterministic readout.
Availability
MAX1326ECM+ is available at Aetrix Electronics and suitable for multiphase motor control, power-grid synchronization, and vibration analysis requiring stable component supply across industrial OEM production cycles.
Supply support for MAX1326ECM+ 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 and mixed-signal ICs for industrial, automotive, and communications applications.
The MAX1316–MAX1326 family targets high-accuracy, multichannel data acquisition in electrically noisy environments-specifically engineered for simultaneous sampling, fault tolerance, and seamless integration into real-time control systems.
FAQ
What is the maximum sample rate per channel for the MAX1326ECM+?
The MAX1326ECM+ achieves 250ksps per channel when operating all two enabled channels simultaneously. This is measured with an external 10MHz clock and reflects sustained throughput under full-load conditions, including setup, conversion, and data readout timing margins.
Does the MAX1326ECM+ require external calibration for production use?
No, the MAX1326ECM+ does not require external calibration. It features factory-trimmed performance with guaranteed ±1.5 LSB INL and ±1 LSB DNL across temperature, eliminating field calibration steps in end equipment manufacturing and reducing test time.
Can the MAX1326ECM+ accept ±10V inputs directly without external level-shifting?
Yes, the MAX1326ECM+ supports a native ±10V bipolar input range. Its analog inputs are designed for direct connection to industrial sensors and transducers delivering ±10V signals, with no external op-amp or resistor network needed for scaling.
What is the purpose of the MSV pin on the MAX1326ECM+?
On the MAX1326ECM+, the MSV (Midscale Voltage) pin must be connected directly to AGND. This differs from unipolar variants (e.g., MAX1316) that require capacitor bypassing. Correct MSV grounding ensures proper biasing of the internal analog front-end for bipolar ±10V operation.
How does the MAX1326ECM+ handle fault conditions on its analog inputs?
The MAX1326ECM+ provides ±16.5V fault tolerance on CH0 and CH1. This protection remains active during normal operation and allows the device to survive transient overvoltages-such as those induced by switching inductors or lightning surges-without latch-up or parametric shift.
MAX1326ECM+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 48-LQFP
- Packaging:
- Tray
- 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:
- -
MAX1326ECM+ FAQ
1.How can I place an order for MAX1326ECM+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1326ECM+ 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 MAX1326ECM+ reliable?
The price and inventory of MAX1326ECM+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1326ECM+ is usually 5 days.
3.What payment methods are accepted for MAX1326ECM+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1326ECM+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1326ECM+?
MAX1326ECM+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1326ECM+ 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 MAX1326ECM+?
For technical support, including MAX1326ECM+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1326ECM+ requirements.
6.How does Aetrix verify that MAX1326ECM+ is sourced from the original manufacturer or authorized distributors?
All MAX1326ECM+ 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 MAX1326ECM+ meets industry standards.
7.What is the process for return or replacement of MAX1326ECM+?
All MAX1326ECM+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1326ECM+, 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 MAX1326ECM+ part is unused and in its original packaging.
Return procedure for MAX1326ECM+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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