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Analog Devices Inc./Maxim Integrated MAX11049ECB+
- Part No.:
- MAX11049ECB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-TQFP Exposed Pad
- Datasheet:
-
MAX11049ECB+.pdf
- Description:
- IC ADC 16BIT SAR 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,876
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Product details
Overview
The MAX11049ECB+ from Maxim Integrated is a high-precision 8-channel, 16-bit simultaneous-sampling analog-to-digital converter (ADC) with independent track-and-hold per channel, 250ksps throughput per channel, ±0.65LSB integral nonlinearity, and 4.096V internal reference enabling 0–5V input range. It serves in multiphase motor control and power-grid protection systems requiring synchronized acquisition across multiple voltage or current sensors.
For engineers reviewing the MAX11049ECB+ datasheet, MAX11049ECB+ pinout, MAX11049ECB+ application, or MAX11049ECB+ equivalent, this page delivers verified specifications, package mapping to 64-pin TQFP-EP, channel-to-channel T/H matching (100ps), parallel interface timing, and real-world selection guidance for high-fidelity industrial data acquisition.
Technical Context
This ADC employs independent SAR architecture with dedicated track-and-hold circuitry per channel, enabling true simultaneous sampling without inter-channel skew. Its 20MHz bidirectional parallel interface supports direct host CPU connection without FIFO or glue logic, while internal clocking eliminates external timing components.
It features dual-supply operation: 4.75–5.25V analog supply (AVDD) and flexible 2.7–5.25V digital supply (DVDD), allowing seamless interfacing with 3.3V or 5V microcontrollers. Input overrange protection uses ±20mA internal clamps with external resistor limiting, supporting robust field sensor interfacing.
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 signals. |
| Sampling Rate | 250ksps per channel - enables real-time capture of fast transients in vibration analysis or motor phase currents. |
| INL | ±0.65LSB max - ensures linearity error remains under 0.01% of full scale, critical for calibration-sensitive power-factor monitoring. |
| Channel Count | 8 independent channels - supports full three-phase voltage/current + auxiliary sensing (e.g., temperature, DC bus) in single-package solution. |
| Reference | 4.096V internal reference - provides stable 0–5V input range with ±4ppm/°C drift, eliminating need for external precision reference in most applications. |
| Aperture Matching | 100ps channel-to-channel T/H matching - guarantees sub-0.02° phase error at 50Hz, essential for accurate phasor calculation in grid protection relays. |
| Supply Range | AVDD: 4.75–5.25V; DVDD: 2.7–5.25V - allows direct interface with 3.3V FPGA or MCU I/O banks without level shifters. |
Pinout & Package
MAX11049ECB+ is housed in a 64-pin TQFP-EP (10mm × 10mm) package with exposed pad thermally connected to AGND. Pin functions are defined per Maxim's official pin description table for MAX11049 (TQFP-EP variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 | Analog input terminals | Eight fully differential-capable, high-impedance (1GΩ) inputs with ±20mA overrange clamps-accept 0–5V signals directly from isolated amplifiers or resistive dividers. |
| DB0–DB15 | Parallel data bus outputs/inputs | 16-bit bidirectional bus delivering conversion results or accepting configuration register writes; compatible with standard 8080/6800-style microcontroller timing. |
| CONVST | Convert start trigger | Rising-edge–sensitive input that initiates simultaneous sampling across all 8 channels-enables deterministic multi-sensor synchronization. |
| EOC | End-of-conversion flag | Active-low open-drain output signaling completion of conversion; used to generate interrupt or strobe read cycle in host system. |
| REFIO | Reference I/O | Internal 4.096V reference output or external reference input (3.0–4.25V); decoupled with 0.1µF capacitor to AGND for low-noise operation. |
| RDC / RDC_SENSE | Reference buffer decoupling | RDC pins require ≥80µF total bulk capacitance to AGND; RDC_SENSE provides feedback for reference buffer stability in TQFP package. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous sampling | Independent T/H per channel ensures zero inter-channel skew-critical for vector measurements in power electronics and motor control. |
| High-speed parallel interface | 20MHz bidirectional bus eliminates serialization latency and reduces host processing overhead versus SPI/I²C alternatives. |
| On-chip 4.096V reference | Low-drift (±4ppm/°C), factory-trimmed reference enables calibrated 0–5V input range without external components or trimming effort. |
| Input overrange protection | Integrated ±20mA clamps allow safe operation with simple series resistor-reduces BOM count and PCB area vs. discrete TVS solutions. |
| Flexible dual-supply operation | Separate AVDD and DVDD rails support mixed-voltage system design-DVDD can be 3.3V while AVDD remains at 5V for optimal SNR. |
Applications
| Power-Grid Protection Relay | Multiphase Motor Control |
|---|---|
|
Use Scenario: Real-time monitoring of three-phase voltage, current, and zero-sequence signals for fault detection and selective tripping. IC Role / Device Role / Timing Role: Simultaneous 8-channel acquisition captures synchronized phasors across all phases and neutrals with <100ps channel alignment. Use Value: Enables accurate sequence component calculation and harmonic analysis up to 50th order, meeting IEC 61850-9-2 LE requirements. |
Use Scenario: Closed-loop FOC (Field-Oriented Control) of industrial PMSM/induction motors using phase current and back-EMF sensing. IC Role / Device Role / Timing Role: Simultaneous sampling of all three phase currents and DC bus voltage ensures precise torque estimation without timing-induced cross-coupling errors. Use Value: Reduces torque ripple by >40% compared to sequential sampling ADCs, improving motor efficiency and acoustic noise performance. |
| Vibration & Waveform Analysis | Automatic Test Equipment (ATE) |
|
Use Scenario: High-fidelity capture of multi-axis accelerometer and strain gauge outputs for predictive maintenance analytics. IC Role / Device Role / Timing Role: 8-channel 250ksps sampling with 92.3dB SNR captures wideband mechanical resonance signatures (up to 100kHz) with minimal quantization noise. Use Value: Supports FFT-based spectral analysis with <0.001% amplitude error-enabling detection of bearing defects at early stages. |
Use Scenario: Precision DC parametric testing of analog ICs, sensors, and power devices requiring multi-point voltage/current sweeps. IC Role / Device Role / Timing Role: Simultaneous digitization of DUT output, reference voltage, and thermal sensor enables correlated measurement without time-stamping overhead. Use Value: Cuts test cycle time by 3× vs. single-channel ADCs; ±0.65LSB INL ensures pass/fail decisions meet Class A metrology standards. |
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, 1MSPS, integrated analog front-end with ±10V/±5V selectable input range; uses serial (SPI) interface instead of parallel. | Better suited for high-speed transient capture but requires additional SPI controller resources and lacks native 0–5V optimized reference. | Select AD7606C-16 when higher sample rate (>250ksps) or bipolar input capability is required; MAX11049ECB+ preferred for cost-sensitive, parallel-interface embedded systems. |
| ADS8688 | 8-channel, 16-bit, 500ksps, SAR ADC with integrated programmable gain amplifier (PGA) and 4.096V reference; SPI interface only. | Includes on-chip PGA for direct sensor interfacing but no simultaneous sampling-channels sampled sequentially with 250ns inter-channel delay. | Choose ADS8688 for variable-range sensor inputs needing gain flexibility; MAX11049ECB+ remains optimal where strict phase coherence across all 8 channels is mandatory. |
Compared with AD7606C-16 and ADS8688, the MAX11049ECB+ uniquely combines true simultaneous sampling, parallel host interface, and factory-calibrated 0–5V input range in a single 64-pin TQFP-reducing firmware complexity and PCB layout risk in time-critical industrial DAQ systems.
Availability
MAX11049ECB+ is available at Aetrix Electronics and suitable for power-grid protection relays, multiphase motor drives, and vibration analysis equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for MAX11049ECB+ 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, emphasizing integration, precision, and reliability.
The MAX11047–MAX11049 family targets high-fidelity, multi-channel data acquisition in electric utility, motor control, and test instrumentation-delivering simultaneous sampling, low power, and robust input protection in compact packages.
FAQ
What is the maximum sampling rate per channel for the MAX11049ECB+?
The MAX11049ECB+ achieves 250ksps (kilo-samples per second) per channel with true simultaneous sampling across all eight analog inputs. This rate is maintained under full-load conditions with internal reference and 5V AVDD, enabling real-time capture of 50Hz–100kHz waveforms without aliasing in power quality monitoring applications.
Does the MAX11049ECB+ require an external reference voltage?
No-the MAX11049ECB+ includes a low-drift 4.096V internal reference that supports its specified 0–5V input range. External reference operation is optional (3.0–4.25V range) and enabled via configuration register; using the internal reference simplifies design and improves system accuracy by eliminating external component tolerances and noise.
What is the purpose of the RDC and RDC_SENSE pins on the MAX11049ECB+?
RDC pins provide decoupling nodes for the internal reference buffer and require ≥80µF total capacitance to AGND. RDC_SENSE (present only on TQFP packages like MAX11049ECB+) supplies feedback to stabilize the reference buffer-both are essential for maintaining 92.3dB SNR and minimizing reference-induced distortion during high-speed conversions.
Can the MAX11049ECB+ interface directly with a 3.3V microcontroller?
Yes-the MAX11049ECB+ supports DVDD from 2.7V to 5.25V, allowing direct connection to 3.3V logic families. Its DB0–DB15, RD, WR, and CS pins operate at DVDD levels, and output drive strength (VOH = DVDD – 0.4V, VOL = 0.4V) meets 3.3V CMOS input thresholds without level-shifting circuitry.
How does the MAX11049ECB+ handle overvoltage conditions on analog inputs?
The MAX11049ECB+ integrates ±20mA input clamps on each CH0–CH7 pin. When paired with an external series resistor (e.g., 250Ω), these clamps limit input voltage to ±5V under fault conditions-protecting the internal SAR core without requiring external TVS diodes or op-amp saturation recovery circuits.
MAX11049ECB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 64-TQFP Exposed Pad
- Packaging:
- Tray
- 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:
- 64-TQFP-EP (10x10)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11049ECB+ FAQ
1.How can I place an order for MAX11049ECB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11049ECB+ 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 MAX11049ECB+ reliable?
The price and inventory of MAX11049ECB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11049ECB+ is usually 5 days.
3.What payment methods are accepted for MAX11049ECB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11049ECB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11049ECB+?
MAX11049ECB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11049ECB+ 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 MAX11049ECB+?
For technical support, including MAX11049ECB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11049ECB+ requirements.
6.How does Aetrix verify that MAX11049ECB+ is sourced from the original manufacturer or authorized distributors?
All MAX11049ECB+ 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 MAX11049ECB+ meets industry standards.
7.What is the process for return or replacement of MAX11049ECB+?
All MAX11049ECB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11049ECB+, 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 MAX11049ECB+ part is unused and in its original packaging.
Return procedure for MAX11049ECB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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