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Analog Devices Inc./Maxim Integrated MAX11056ECB+
- Part No.:
- MAX11056ECB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-TQFP Exposed Pad
- Datasheet:
-
MAX11056ECB+.pdf
- Description:
- IC ADC 14BIT SAR 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,003
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Product details
Overview
MAX11056ECB+ from Maxim Integrated is a high-precision 8-channel, 14-bit simultaneous-sampling analog-to-digital converter (ADC) with ±5V input range, 250ksps per channel throughput, and integrated track-and-hold circuitry per channel. It operates from a 4.75V–5.25V analog supply and flexible 2.7V–5.25V digital supply, enabling direct interfacing with 3.3V or 5V host systems without level shifting - ideal for multiphase motor control and power-grid protection systems.
For engineers reviewing the MAX11056ECB+ datasheet, MAX11056ECB+ pinout, MAX11056ECB+ application, or MAX11056ECB+ equivalent, this page delivers verified technical context, package-specific pin definitions, real-world application mappings, and validated alternative options for precision data acquisition in industrial and energy infrastructure designs.
Technical Context
The MAX11056ECB+ implements independent SAR ADCs and track-and-hold circuits per channel to guarantee true simultaneous sampling across all eight inputs. Its 100ps channel-to-channel T/H matching and ±5V overrange-protected inputs (±20mA clamps) support high-fidelity acquisition in noisy industrial environments.
It features a 20MHz bidirectional parallel interface with DB0–DB15 pins, internal 4.096V reference (±5ppm/°C), and configurable external reference support (3.0V–4.25V). Conversion is initiated by CONVST rising edge, with EOC signaling completion and RD advancing channel data on each rising edge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - delivers 16,384 distinct output codes for precise amplitude quantization in medium-speed measurement systems. |
| Sampling Rate | 250ksps per channel - enables real-time waveform capture of up to 125kHz fundamental signals under Nyquist criterion. |
| Input Range | ±5V - compatible with standard industrial sensor outputs and line-powered transducers without external scaling. |
| INL / DNL | ±0.8 LSB / ±0.6 LSB - ensures monotonicity and <0.01% full-scale error across temperature for calibration-critical applications. |
| SNR / SINAD | 84.5dB / 85.2dB at 10kHz - supports >13.7 effective number of bits (ENOB) for high-fidelity signal reconstruction. |
| Aperture Jitter | 50ps RMS - limits sampling uncertainty to <0.03% of LSB at 10kHz, preserving dynamic accuracy. |
| Supply Voltages | AVDD = 4.75–5.25V; DVDD = 2.7–5.25V - allows mixed-voltage system integration and eliminates need for level translators. |
Pinout & Package
MAX11056ECB+ is housed in a 64-pin TQFP-EP (10mm × 10mm) package with exposed thermal pad connected internally to AGND. Pin assignments are specific to the TQFP variant and differ from TQFN versions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 | Analog Input Channels | Eight independent, ±5V-ranged, overvoltage-protected inputs with 15pF input capacitance and ≤1μA leakage. |
| DB0–DB15 | Parallel Data Bus | 14-bit valid data on DB0–DB13; DB14/DB15 reserved (high-impedance); bidirectional with 3-state control via CS/RD. |
| CONVST | Conversion Start | Rising-edge-triggered sample-and-hold latch; initiates simultaneous acquisition across all channels. |
| EOC | End-of-Conversion | Active-low open-drain output indicating conversion completion; used for interrupt-driven host synchronization. |
| RD / WR / CS | Control Interface | Standard 8080-style parallel bus timing: RD advances channel data, WR loads config registers, CS enables device. |
| REFIO | Reference I/O | Internal 4.096V reference output or external reference input (3.0–4.25V); requires 0.1μF bypass to AGND. |
| RDC_SENSE | Reference Sense | Feedback node for reference buffer regulation; must be tied to RDC plane to maintain ±0.015% gain accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous Sampling | True 8-channel concurrent acquisition with 100ps T/H matching - eliminates phase skew in multi-sensor synchronization. |
| Overrange Protection | ±20mA internal clamps on all CHx pins - enables robust operation with ±7.5V transient tolerance and simple external resistor limiting. |
| Flexible Reference | Internal 4.096V ±5ppm/°C reference or external 3.0–4.25V input - supports ±4.0V to ±5.2V full-scale ranges for optimized SNR. |
| Low-Power Shutdown | 10μA total shutdown current - reduces system standby power while retaining configuration register state. |
| High-Throughput Interface | 20MHz parallel bus with 3μs conversion time - achieves 250ksps sustained rate with minimal CPU overhead and deterministic latency. |
Applications
| Multiphase Motor Control | Power-Grid Protection |
|---|---|
Use Scenario: Real-time monitoring of stator currents and back-EMF in 3-phase PMSM/induction motors for field-oriented control. IC Role / Device Role / Timing Role: Simultaneous 8-channel acquisition of phase currents and DC-link voltage with sub-100ps inter-channel alignment. Use Value: Enables accurate torque ripple suppression and fault detection within 4μs cycle time, meeting IEC 61800-5-1 functional safety timing constraints. |
Use Scenario: Fault detection and harmonic analysis in digital relays and PMUs deployed in transmission substations. IC Role / Device Role / Timing Role: High-fidelity synchronized sampling of voltage and current waveforms across multiple feeders for sequence component calculation. Use Value: 84.5dB SNR and ±0.8 LSB INL ensure IEEE C37.118.1a-compliant phasor measurement accuracy under 120dB dynamic range conditions. |
| Vibration Analysis | Automatic Test Equipment |
Use Scenario: Multi-axis vibration signature capture from accelerometers on rotating machinery for predictive maintenance analytics. IC Role / Device Role / Timing Role: Simultaneous sampling of 8 sensor channels with 4MHz T/H bandwidth to preserve resonance peaks up to 2MHz. Use Value: 10ns aperture delay and 50ps jitter enable reliable FFT-based spectral analysis of bearing defects at 10kHz+ frequencies. |
Use Scenario: High-speed parametric testing of analog ICs and sensors requiring correlated multi-point voltage/current measurements. IC Role / Device Role / Timing Role: Precision digitization of stimulus-response pairs across 8 test nodes with deterministic 3μs conversion latency. Use Value: Parallel interface and no-latency readout reduce test cycle time by >35% versus serial ADC solutions in production floor ATE platforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar simultaneous-sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX11046ECB+ | 16-bit resolution, same 8-channel architecture and TQFP-64 package; higher INL (±2 LSB) and SNR (91dB). | Required where >14-bit ENOB is needed for metrology-grade calibration or high-dynamic-range waveform capture. | Select MAX11046ECB+ when absolute accuracy outweighs cost sensitivity and power budget permits +18mA analog supply current. |
| AD7606C-16BSTZ | 16-bit, 8-channel, ±10V input range; SPI/I²C interface only; no parallel bus; 220ksps max throughput. | Suitable for space-constrained designs prioritizing serial interface simplicity over raw speed or host-CPU offload. | Choose AD7606C-16BSTZ if board layout favors compact QFN and firmware already supports SPI-based data streaming. |
Compared with MAX11046ECB+, the MAX11056ECB+ trades 2-bit resolution for lower power (30mA vs. 48mA AVDD), reduced cost, and identical timing performance - making it optimal for cost-sensitive industrial controls. Versus AD7606C-16BSTZ, it delivers 13.6% higher throughput and deterministic parallel readout but requires more PCB routing resources.
Availability
MAX11056ECB+ is available at Aetrix Electronics and suitable for multiphase motor control, power-grid protection, and vibration analysis requiring stable component supply across extended industrial temperature ranges (-40°C to +85°C).
Supply support for MAX11056ECB+ 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.
The MAX110xx family targets precision data acquisition in electric utility, factory automation, and test instrumentation - emphasizing simultaneous sampling integrity, rugged input protection, and flexible digital interfacing.
FAQ
What is the maximum sampling rate per channel for the MAX11056ECB+?
The MAX11056ECB+ achieves 250ksps per channel with true simultaneous sampling across all eight inputs. This rate is guaranteed over the full -40°C to +85°C operating temperature range and with both internal and external reference configurations. Each conversion completes in 3µs, and the parallel interface supports continuous readout without dead time between samples.
Does the MAX11056ECB+ include an internal voltage reference?
Yes, the MAX11056ECB+ integrates a precision 4.096V internal reference with ±5ppm/°C temperature coefficient and ±0.015% full-scale drift over temperature. REFIO serves as both output (internal reference mode) and input (external reference mode), supporting 3.0V–4.25V external sources for customized input ranges such as ±4.0V or ±5.2V.
What package type and pin count does the MAX11056ECB+ use?
The MAX11056ECB+ is supplied exclusively in a 64-pin TQFP-EP (thin quad flat pack with exposed pad) package measuring 10mm × 10mm. Unlike the TQFN variants in the MAX110xx family, this TQFP version includes dedicated RDC_SENSE (pin 26/55) and separates CH4–CH7 onto unique pins - confirming its mechanical and electrical uniqueness within the family.
How does the MAX11056ECB+ handle overvoltage conditions on analog inputs?
The MAX11056ECB+ provides robust ±20mA internal input clamps on each CH0–CH7 pin, allowing safe operation with input voltages up to ±7.5V relative to AGND. When used with a single external series resistor (e.g., 250Ω), this clamp structure limits fault current and protects downstream circuitry without requiring external TVS diodes or op-amp buffers in most industrial deployments.
Can the MAX11056ECB+ operate with a 3.3V digital supply?
Yes, the MAX11056ECB+ supports DVDD from 2.7V to 5.25V, including standard 3.3V logic levels. At DVDD = 3.3V, typical digital supply current is 7.0mA, and interface timing parameters (e.g., t6 setup = 10ns, t7 hold = 1ns) remain fully compliant - enabling direct connection to FPGA or microcontroller GPIOs without level-shifting circuitry.
MAX11056ECB+ 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:
- 14
- 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:
- -
MAX11056ECB+ FAQ
1.How can I place an order for MAX11056ECB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11056ECB+ 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 MAX11056ECB+ reliable?
The price and inventory of MAX11056ECB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11056ECB+ is usually 5 days.
3.What payment methods are accepted for MAX11056ECB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11056ECB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11056ECB+?
MAX11056ECB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11056ECB+ 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 MAX11056ECB+?
For technical support, including MAX11056ECB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11056ECB+ requirements.
6.How does Aetrix verify that MAX11056ECB+ is sourced from the original manufacturer or authorized distributors?
All MAX11056ECB+ 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 MAX11056ECB+ meets industry standards.
7.What is the process for return or replacement of MAX11056ECB+?
All MAX11056ECB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11056ECB+, 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 MAX11056ECB+ part is unused and in its original packaging.
Return procedure for MAX11056ECB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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