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Analog Devices Inc./Maxim Integrated MAX11046ETN+
- Part No.:
- MAX11046ETN+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 56-WFQFN Exposed Pad
- Datasheet:
-
MAX11046ETN+.pdf
- Description:
- IC ADC 16BIT SAR 56TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,039
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Product details
Overview
MAX11046ETN+ from Maxim Integrated is a 8-channel, 16-bit simultaneous-sampling analog-to-digital converter with independent track-and-hold per channel, 250ksps throughput per channel, ±5V input range, and 56-pin TQFN-EP package. It delivers 92.3dB SNR and 104dB SFDR at 10kHz input, enabling high-fidelity acquisition in multiphase power monitoring and motor control systems.
For engineers reviewing the MAX11046ETN+ datasheet, MAX11046ETN+ pinout, MAX11046ETN+ application, or MAX11046ETN+ equivalent, this page provides verified electrical specifications, channel-to-channel matching data (100ps T/H aperture delay matching), internal 4.096V reference performance, and parallel interface timing for real-time embedded system integration.
Technical Context
The MAX11046ETN+ implements eight independent SAR ADCs with dedicated track-and-hold circuits, enabling true simultaneous sampling across all channels without inter-channel skew. Its architecture supports ±5V differential input via internal overrange clamps (±20mA) and configurable external reference (3.0V–4.25V).
It features a 20MHz bidirectional parallel interface with active-low RD/WR/CS control, EOC signaling, and configuration register access via DB0–DB3 pins. Conversion is initiated by CONVST rising edge, with 3µs conversion time and 10ns aperture delay-critical for phase-coherent waveform capture in grid protection and vibration analysis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - Enables 1 part-in-65,536 measurement precision for high-dynamic-range voltage sensing. |
| Sampling Rate | 250ksps per channel - Supports real-time capture of 50/60Hz harmonics up to 40th order with oversampling margin. |
| Input Range | ±5V - Matches standard industrial sensor outputs and isolation amplifier ranges without external scaling. |
| SNR / SINAD | 92.3dB / 92.0dB at 10kHz - Ensures >15 effective bits for accurate RMS, THD, and power quality calculations. |
| Channel Matching | 100ps T/H aperture delay matching - Guarantees <0.01° phase error at 50Hz for synchronized multiphase current/voltage sampling. |
| Reference | 4.096V internal (±5ppm/°C) - Provides stable full-scale range (±5V) with no external reference component required. |
| Supply Voltages | AVDD = 4.75–5.25V; DVDD = 2.7–5.25V - Allows direct interfacing with 3.3V or 5V microcontrollers without level shifters. |
Pinout & Package
MAX11046ETN+ is housed in a 56-pin, 8mm × 8mm, exposed-pad TQFN-EP package optimized for thermal dissipation and low-inductance grounding in high-speed data acquisition PCBs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 | Analog Input Terminals | Eight fully differential, overvoltage-protected inputs (±7.5V absolute max); each with 15pF input capacitance and ≤1μA leakage. |
| DB0–DB15 | Parallel Data Bus | 16-bit bidirectional bus: outputs conversion results (MSB-first), accepts configuration bits CR0–CR3 on lower nibble during write cycles. |
| CONVST | Conversion Start Trigger | Rising-edge–sensitive; initiates simultaneous sample-and-hold across all 8 channels with 10ns aperture jitter. |
| EOC | End-of-Conversion Flag | Active-low open-drain output; asserts within 47–140ns after CONVST edge, signaling valid data ready on DBx lines. |
| RDC | Reference Decoupling Node | Must be connected together and bypassed to AGND with ≥80μF total capacitance to stabilize internal reference buffer. |
| SHDN | Global Shutdown Control | High-level assertion reduces total supply current to ≤10μA while preserving configuration register contents. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous 8-channel sampling | Eliminates time-skew errors in multiphase systems-enables true vector-based power calculations without interpolation. |
| On-chip 4.096V reference | Delivers ±0.015% full-scale gain error and ±0.01% channel-to-channel gain matching over temperature. |
| ±20mA input clamp protection | Allows robust front-end design with only one external series resistor per channel for overvoltage survival up to ±7.5V. |
| 100ps channel-to-channel T/H matching | Ensures <0.003° phase mismatch at 1kHz-critical for accurate FFT-based vibration signature analysis. |
| Flexible digital supply (2.7–5.25V) | Permits direct connection to FPGA I/O banks or ARM Cortex-M GPIOs without voltage translation circuitry. |
Applications
| Power-Grid Protection | Multiphase Motor Control |
|---|---|
|
Use Scenario: Real-time fault detection in medium-voltage substations using synchronized voltage and current sampling across 3 phases + neutral. IC Role / Device Role / Timing Role: Simultaneous 8-channel ADC captures all phase voltages and currents with sub-100ps inter-channel timing alignment for sequence component calculation. Use Value: Enables IEEE C37.118-compliant synchrophasor generation with <10μs time-tagging uncertainty under IEC 61850-9-2 LE requirements. |
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase PMSM drives with dual current sensing per phase (high/low side). IC Role / Device Role / Timing Role: Acquires six current signals + two DC-link voltages simultaneously, feeding real-time current reconstruction and torque ripple suppression algorithms. Use Value: Reduces torque ripple by >40% versus sequential-sampling ADCs due to zero inter-channel phase lag in Clarke/Park transforms. |
| Vibration and Waveform Analysis | Automatic Test Equipment |
|
Use Scenario: High-resolution structural health monitoring of rotating machinery using multi-sensor accelerometers and strain gauges. IC Role / Device Role / Timing Role: Simultaneously digitizes 8 analog sensor outputs with 92.3dB SNR and 104dB SFDR to resolve harmonic content up to 125kHz. Use Value: Captures bearing defect frequencies (e.g., BPFO/BPFI) with <0.1Hz resolution at 250ksps, enabling early-stage fault prediction. |
Use Scenario: Production-line functional testing of power supplies, inverters, and energy meters requiring calibrated multichannel voltage/current validation. IC Role / Device Role / Timing Role: Serves as the core digitizer in ATE systems, acquiring reference and DUT outputs in lockstep for gain/offset/linearity verification. Use Value: Delivers ±0.4LSB INL and ±0.15LSB DNL-meeting Class A calibration accuracy requirements per IEC 61000-4-30 Ed.3 Annex B. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar simultaneous-sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-16 | 8-channel, 16-bit, ±10V input range; uses SPI interface instead of parallel; 200ksps max per channel. | Better suited for higher-voltage industrial sensors but lacks 250ksps throughput and 100ps channel matching. | Select when ±10V input range or SPI host interface is mandatory; avoid when phase coherence at 250ksps is required. |
| ADS8688 | 8-channel, 16-bit, pseudo-simultaneous sampling (multiplexed SAR); 100ksps aggregate rate; integrated PGA and reference. | Lower cost and power, but introduces inter-channel skew >1µs-unsuitable for vector math or harmonic analysis. | Select for cost-sensitive, lower-bandwidth applications like PLC analog input modules where true simultaneity is not needed. |
Compared with AD7606C-16 and ADS8688, the MAX11046ETN+ uniquely combines 250ksps/channel throughput, 100ps channel matching, and ±5V input compatibility-making it the only option for high-fidelity, phase-coherent power quality analyzers and real-time motor control systems.
Availability
MAX11046ETN+ is available at Aetrix Electronics and suitable for power-grid protection relays, multiphase motor drives, vibration monitoring systems, and automatic test equipment requiring stable component supply and long-term production continuity.
Supply support for MAX11046ETN+ 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 markets with emphasis on signal integrity and system-level integration.
The MAX11046ETN+ belongs to Maxim's precision simultaneous-sampling ADC family, engineered specifically for applications demanding phase-coherent multichannel acquisition-such as smart grid instrumentation and servo drive feedback loops.
FAQ
What is the maximum sampling rate per channel for the MAX11046ETN+?
The MAX11046ETN+ achieves a guaranteed 250ksps sampling rate per channel under all operating conditions (–40°C to +85°C, AVDD = 4.75V–5.25V). This rate is sustained across all 8 channels simultaneously, with conversion time fixed at 3µs and acquisition time ≤1000µs-enabling Nyquist-compliant capture of signals up to 125kHz.
Does the MAX11046ETN+ require an external reference voltage?
No, the MAX11046ETN+ includes a precision internal 4.096V reference with ±5ppm/°C drift and ±0.015% full-scale error, sufficient for ±5V input range operation. An external reference (3.0V–4.25V) may be used via REFIO pin to adjust full-scale range (e.g., ±4.0V to ±5.2V), but is optional-not required for standard operation.
How does the MAX11046ETN+ handle overvoltage conditions on analog inputs?
The MAX11046ETN+ integrates ±20mA input clamps on each CH0–CH7 pin, providing robust overvoltage protection up to ±7.5V. When paired with a single external series resistor (e.g., 250Ω), it safely limits input current during transients-eliminating need for discrete TVS diodes or op-amp clamping circuits in most industrial front-ends.
What is the significance of 100ps channel-to-channel T/H matching in the MAX11046ETN+?
The 100ps aperture delay matching ensures phase coherence across all 8 channels: at 50Hz, this translates to <0.003° phase error; at 1kHz, <0.06°. This enables accurate computation of symmetrical components, Park transforms, and harmonic phasors-essential for IEEE 1459 power measurements and FOC motor algorithms in the MAX11046ETN+.
Can the MAX11046ETN+ interface directly with a 3.3V FPGA or microcontroller?
Yes-the MAX11046ETN+ supports DVDD from 2.7V to 5.25V, and its parallel interface (DB0–DB15, RD, WR, CS, EOC) operates at 3.3V logic levels when DVDD = 3.3V. Output VOH is ≥2.9V (at ISOURCE = 1.2mA) and VOL ≤0.4V (at ISINK = 1mA), ensuring reliable interfacing with 3.3V CMOS I/O without level shifters.
MAX11046ETN+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 56-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 8
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 8
- 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:
- 56-TQFN (8x8)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11046ETN+ FAQ
1.How can I place an order for MAX11046ETN+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11046ETN+ 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 MAX11046ETN+ reliable?
The price and inventory of MAX11046ETN+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11046ETN+ is usually 5 days.
3.What payment methods are accepted for MAX11046ETN+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11046ETN+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11046ETN+?
MAX11046ETN+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11046ETN+ 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 MAX11046ETN+?
For technical support, including MAX11046ETN+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11046ETN+ requirements.
6.How does Aetrix verify that MAX11046ETN+ is sourced from the original manufacturer or authorized distributors?
All MAX11046ETN+ 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 MAX11046ETN+ meets industry standards.
7.What is the process for return or replacement of MAX11046ETN+?
All MAX11046ETN+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11046ETN+, 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 MAX11046ETN+ part is unused and in its original packaging.
Return procedure for MAX11046ETN+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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