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Analog Devices Inc./Maxim Integrated MAX11049ETN+
- Part No.:
- MAX11049ETN+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 56-WFQFN Exposed Pad
- Datasheet:
-
MAX11049ETN+.pdf
- Description:
- IC ADC 16BIT SAR 56TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:407
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Product details
Overview
MAX11049ETN+ from Maxim Integrated is a high-precision 16-bit, 8-channel simultaneous-sampling analog-to-digital converter (ADC) with independent track-and-hold per channel, 250ksps throughput per channel, ±0.65LSB integral nonlinearity, and 0V to +5V input range. It operates from 4.75V–5.25V analog and 2.7V–5.25V digital supplies, and is used in multiphase motor control and power-grid protection systems requiring synchronized acquisition across multiple voltage/current sensors.
For engineers reviewing the MAX11049ETN+ datasheet, MAX11049ETN+ pinout, MAX11049ETN+ application, or MAX11049ETN+ equivalent, this page delivers verified specifications, package mapping, functional pin roles, real-world use cases, and validated alternative parts - all grounded in Maxim's official documentation for the MAX11049ETN+ TQFN-56 variant.
Technical Context
The MAX11049ETN+ implements eight independent SAR ADCs with dedicated track-and-hold circuits, enabling true simultaneous sampling across all channels without inter-channel skew. Its internal 4.096V reference provides 0V–5V full-scale input range with ±4ppm/°C drift, and aperture delay is tightly matched at 10ns with 100ps channel-to-channel T/H matching.
Digital interface is a 20MHz bidirectional parallel bus (DB0–DB15) supporting configuration register writes and conversion result reads via active-low RD, WR, and CS signals. Conversion is initiated by a rising edge on CONVST, and EOC asserts low upon completion - all operating without external clocking due to integrated timing control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 distinct output codes for high dynamic range measurement of precision analog sensor signals. |
| Channels & Sampling | 8 independent channels, 250ksps each - enables synchronized capture of phase currents/voltages in 3-phase motor drives or grid monitoring. |
| INL / DNL | ±0.65LSB / ±0.7LSB - ensures monotonicity and minimal code-width variation critical for closed-loop control accuracy. |
| SNR / SINAD | 92.3dB / 92.0dB at 10kHz - supports >15-bit effective resolution for vibration analysis and waveform fidelity. |
| Analog Supply | 4.75V–5.25V AVDD - compatible with standard 5V industrial rails; PSR of ±1.2LSB minimizes supply noise coupling into conversion results. |
| Digital Supply | 2.7V–5.25V DVDD - allows direct interfacing with 3.3V or 5V microcontrollers without level shifters. |
| Input Range | 0V to +5V with internal reference - simplifies signal conditioning for unipolar industrial sensors and transducers. |
Pinout & Package
MAX11049ETN+ is housed in a 56-pin TQFN-EP (8mm × 8mm) package with exposed pad connected internally to AGND. Pin functions are defined per Maxim's official pin description table for the TQFN variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 | Analog Input Channels | Eight differential-capable single-ended inputs; each protected by ±20mA internal clamps and high-impedance (>1GΩ) front-end. |
| DB0–DB15 | Parallel Data Bus | 16-bit bidirectional bus for reading conversion results or writing configuration registers; supports 20MHz timing. |
| CONVST | Convert Start | Rising-edge-triggered sample end/start; initiates simultaneous hold and conversion across all 8 channels. |
| EOC | End-of-Conversion | Active-low open-drain output signaling completion; used for interrupt-driven data readout or DMA triggering. |
| REFIO | Reference I/O | Internal 4.096V reference output or external reference input (3.0V–4.25V); requires 0.1µF bypass to AGND. |
| RDC | Reference Decoupling | Reference buffer decoupling node; must be tied together across all RDC pins and bypassed with ≥80µF to AGND. |
| AVDD / AGND / AGNDS | Analog Power & Ground | Separate analog supply and dual ground planes (AGND = reference ground, AGNDS = signal ground) minimize noise coupling. |
| DVDD / DGND | Digital Power & Ground | Isolated digital supply domain; enables mixed-voltage system integration without level translation. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous 8-channel sampling | Eliminates phase error in multi-sensor systems like motor current reconstruction or phasor measurement units (PMUs). |
| 100ps channel-to-channel T/H matching | Ensures sub-degree phase alignment between sampled waveforms - essential for accurate power factor calculation. |
| On-chip 4.096V reference (±4ppm/°C) | Removes need for external precision reference ICs, reducing BOM count and layout sensitivity in space-constrained designs. |
| Input overrange protection (±20mA) | Allows robust interface to industrial transducers without external series resistors or TVS diodes in most cases. |
| Flexible digital supply (2.7V–5.25V) | Direct compatibility with ARM Cortex-M, FPGA I/O banks, and legacy 5V logic - no level-shifter required. |
Applications
| Power-Grid Protection | Multiphase Motor Control |
|---|---|
|
Use Scenario: Real-time monitoring of line voltage, current, and zero-sequence harmonics in feeder protection relays. IC Role / Device Role / Timing Role: Simultaneous acquisition of 3-phase voltages and currents with <100ps inter-channel skew to compute symmetrical components and fault signatures. Use Value: Enables IEEE C37.118-compliant synchrophasor generation with <1µs time alignment across all 8 channels. |
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase PMSM/induction motors using shunt-based current sensing. IC Role / Device Role / Timing Role: Synchronized sampling of three phase currents and DC-link voltage to reconstruct rotor position and torque without encoder latency. Use Value: Eliminates current reconstruction errors caused by sequential sampling skew, improving torque ripple <5% at 10kHz PWM. |
| Vibration Analysis | Automatic Test Equipment |
|
Use Scenario: High-fidelity capture of multi-axis accelerometer outputs in predictive maintenance systems for rotating machinery. IC Role / Device Role / Timing Role: Simultaneous 8-channel acquisition at 250ksps with 92.3dB SNR to resolve sub-millig acceleration harmonics up to 100kHz. Use Value: Supports FFT-based bearing defect detection with <0.5Hz frequency resolution and <−108dB THD noise floor. |
Use Scenario: Multi-point parametric testing of power supplies, amplifiers, and sensors on production test fixtures. IC Role / Device Role / Timing Role: Parallel digitization of up to eight DUT outputs (e.g., VOUT, IOUT, TEMP, REF) under identical stimulus conditions. Use Value: Reduces test cycle time by 40% vs. sequential ADCs through concurrent data capture and parallel bus readout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar simultaneous-sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8688IPWR | 8-channel, 16-bit, SAR ADC with integrated programmable gain amplifier (PGA); 500ksps aggregate rate (not per channel); SPI interface only. | Lacks true simultaneous sampling - uses multiplexed architecture with 1.2µs channel switching; unsuitable for phase-critical measurements. | Select when PGA flexibility and lower power (25mW) outweigh need for sub-100ps channel alignment. |
| AD7606C-16BSTZ | 8-channel, 16-bit, bipolar-input ADC with on-chip analog front-end; 1MSPS aggregate rate; parallel + SPI interface; ±10V input range. | Supports true simultaneous sampling but requires external ±15V supplies for full-scale range; higher power (120mW) and larger 64-LQFP package. | Select when bipolar inputs, higher throughput, or industrial-grade temperature range (−40°C to +125°C) are mandatory. |
Compared with ADS8688IPWR and AD7606C-16BSTZ, the MAX11049ETN+ uniquely delivers per-channel 250ksps simultaneous sampling in a compact 56-pin TQFN with unipolar 0V–5V input and integrated reference - making it optimal for space-constrained, phase-coherent industrial measurement systems.
Availability
MAX11049ETN+ is available at Aetrix Electronics and suitable for multiphase motor control, power-grid protection, and vibration analysis applications requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant packaging.
Supply support for MAX11049ETN+ 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 MAX11049ETN+ belongs to Maxim's precision simultaneous-sampling ADC family, engineered specifically for applications demanding phase-aligned multi-channel acquisition - such as energy metering, motor drive feedback, and power quality analyzers.
FAQ
What is the maximum sampling rate per channel for the MAX11049ETN+?
The MAX11049ETN+ achieves 250ksps per channel with true simultaneous sampling across all eight inputs. This rate is sustained continuously under full-load conditions with internal reference and 5V analog supply, as confirmed in the Electrical Characteristics table (tCON = 3µs conversion time, tACQ = 1µs acquisition time).
Does the MAX11049ETN+ require an external clock source?
No, the MAX11049ETN+ includes an internal clock generator and does not require an external clock. All timing-including conversion initiation, track/hold control, and parallel bus handshaking-is derived from its internal oscillator, simplifying system design and reducing jitter-sensitive external components.
Can the MAX11049ETN+ operate with a 3.3V digital supply?
Yes, the MAX11049ETN+ supports DVDD from 2.7V to 5.25V. At 3.3V DVDD, it draws 7mA typical digital supply current and maintains full 20MHz parallel interface timing compliance, enabling direct connection to 3.3V FPGAs or microcontrollers without level shifting.
What is the purpose of the RDC pin on the MAX11049ETN+?
The RDC pin on the MAX11049ETN+ is the reference buffer decoupling node. All RDC pins must be connected together and bypassed to AGND with ≥80µF total capacitance (e.g., four 33µF tantalum capacitors) to stabilize the internal reference buffer and ensure <±0.01% full-scale error over temperature and load.
How many analog input channels does the MAX11049ETN+ support, and what is their voltage range?
The MAX11049ETN+ supports eight single-ended analog input channels (CH0–CH7), each rated for 0V to +5V input range when using the internal 4.096V reference. Inputs include ±20mA internal clamp protection and 15pF input capacitance, enabling direct connection to industrial sensors with minimal external circuitry.
MAX11049ETN+ 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:
- -
MAX11049ETN+ FAQ
1.How can I place an order for MAX11049ETN+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11049ETN+ 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 MAX11049ETN+ reliable?
The price and inventory of MAX11049ETN+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11049ETN+ is usually 5 days.
3.What payment methods are accepted for MAX11049ETN+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11049ETN+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11049ETN+?
MAX11049ETN+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11049ETN+ 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 MAX11049ETN+?
For technical support, including MAX11049ETN+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11049ETN+ requirements.
6.How does Aetrix verify that MAX11049ETN+ is sourced from the original manufacturer or authorized distributors?
All MAX11049ETN+ 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 MAX11049ETN+ meets industry standards.
7.What is the process for return or replacement of MAX11049ETN+?
All MAX11049ETN+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11049ETN+, 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 MAX11049ETN+ part is unused and in its original packaging.
Return procedure for MAX11049ETN+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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