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Analog Devices Inc./Maxim Integrated MAX11045ECB+
- Part No.:
- MAX11045ECB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-TQFP Exposed Pad
- Datasheet:
-
MAX11045ECB+.pdf
- Description:
- IC ADC 16BIT SAR 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:365
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Product details
Overview
MAX11045ECB+ from Maxim Integrated is a 6-channel, 16-bit simultaneous-sampling analog-to-digital converter (ADC) with independent track-and-hold per channel, 250ksps throughput per channel, ±5V input range, and 20MHz parallel interface. It operates from 4.75V–5.25V analog and 2.7V–5.25V digital supplies, and targets high-precision power-grid protection and multiphase motor control systems.
For engineers reviewing the MAX11045ECB+ datasheet, MAX11045ECB+ pinout, MAX11045ECB+ application, or MAX11045ECB+ equivalent, this page provides verified electrical specifications, package mapping to 64-pin TQFP-EP, channel-to-channel matching data (100ps T/H aperture delay matching), internal 4.096V reference accuracy, and real-world application context for industrial measurement systems.
Technical Context
The MAX11045ECB+ implements six independent SAR ADC cores with dedicated track-and-hold circuits, enabling true simultaneous sampling across all channels without inter-channel skew. Its 16-bit resolution is maintained at full 250ksps per channel with ≤±0.4LSB INL (A-grade) and 92.3dB SNR at 10kHz input.
It supports both internal (4.096V, ±5ppm/°C) and external (3.0V–4.25V) references, features ±20mA input clamps for overrange protection, and uses a bidirectional 16-bit parallel interface with active-low RD/WR/CS control signals and EOC handshake - all operating without level-shifting between analog and digital domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 distinct output codes for high dynamic range in precision measurement. |
| Sampling Rate | 250ksps per channel - enables real-time capture of fast transients in 50/60Hz power systems. |
| Input Range | ±5V - matches standard industrial sensor outputs and eliminates need for signal conditioning amplifiers. |
| Channel Count | 6 independent channels - supports full three-phase voltage/current acquisition plus auxiliary measurements. |
| Aperture Matching | 100ps channel-to-channel T/H delay matching - ensures sub-0.01° phase error at 50Hz for accurate power-factor calculation. |
| Reference | Internal 4.096V ±5ppm/°C - provides stable full-scale scaling without external reference IC or trimming. |
| 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
MAX11045ECB+ is housed in a 64-pin TQFP-EP (10mm × 10mm) package with exposed thermal pad internally connected to AGND. Pin functions are defined per Maxim's official pin description table for MAX11045/TQFP-EP variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH5 | Analog Input Channels | 6 differential-capable inputs accepting ±5V; each protected by ±20mA internal clamp diodes. |
| DB0–DB15 | Bidirectional Data Bus | 16-bit parallel interface: outputs conversion results and accepts configuration register writes via CR0–CR3 multiplexed on DB0–DB3. |
| CONVST | Convert Start Input | Rising edge initiates simultaneous sampling across all 6 channels; defines precise aperture timing. |
| EOC | End-of-Conversion Output | Active-low signal indicates completion of conversion; used for interrupt-driven host readout coordination. |
| RD/WR/CS | Control Interface | Standard 3-wire parallel bus protocol: CS enables device, WR loads config, RD advances channel data on rising edge. |
| REFIO | Reference I/O | Configurable as internal 4.096V reference output or external reference input (3.0V–4.25V). |
| RDC_SENSE | Reference Decoupling Sense | Feedback node for reference buffer stability; must be tied to RDC plane per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous Sampling | Six independent T/H + SAR blocks eliminate inter-channel timing skew - critical for vector-based power calculations. |
| High Input Impedance | ≥1GΩ input resistance reduces loading on high-impedance sensors and shunt-based current monitors. |
| Overrange Protection | ±20mA internal input clamps enable robust operation with simple series resistor - no external TVS required. |
| Low Aperture Jitter | 50ps RMS jitter preserves SNR at high input frequencies and minimizes phase uncertainty in time-domain analysis. |
| Flexible Reference Options | Switchable between precision internal 4.096V reference or user-supplied 3.0V–4.25V source - supports custom full-scale ranges (±4.0V to ±5.2V). |
Applications
| Power-Grid Protection | Multiphase Motor Control |
|---|---|
|
Use Scenario: Real-time monitoring of three-phase voltage and current waveforms for fault detection and relay tripping in substations. IC Role / Device Role / Timing Role: Simultaneous acquisition of 6 analog inputs (VA, VB, VC, IA, IB, IC) with <100ps channel alignment to preserve phasor integrity. Use Value: Enables accurate sequence component analysis and harmonic distortion measurement up to 50th order at 250ksps/channel. |
Use Scenario: Closed-loop field-oriented control (FOC) of industrial AC induction or PMSM motors using back-EMF and current feedback. IC Role / Device Role / Timing Role: Synchronized sampling of motor phase currents and DC-link voltage to compute torque and flux vectors without timing-induced cross-coupling. Use Value: Eliminates current reconstruction errors caused by sequential sampling, improving torque ripple suppression below 0.5%. |
| Automatic Test Equipment | Vibration and Waveform Analysis |
|
Use Scenario: High-speed functional testing of power electronics modules (inverters, converters) requiring multi-point voltage/current validation. IC Role / Device Role / Timing Role: 6-channel simultaneous digitization captures transient switching events (e.g., shoot-through, dv/dt spikes) across gate drivers and load paths. Use Value: Captures correlated anomalies across multiple nodes with deterministic timing - essential for root-cause failure analysis. |
Use Scenario: Structural health monitoring of rotating machinery using accelerometer and strain gauge arrays. IC Role / Device Role / Timing Role: Coherent sampling of vibration signatures across multiple axes to resolve modal frequencies and damping ratios. Use Value: 92.3dB SNR and 100ps channel matching support detection of sub-millig acceleration changes at 10kHz bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar simultaneous-sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7656ASTZ | 6-channel, 16-bit, 250ksps SAR ADC; requires external reference and separate analog/digital supplies; no integrated input clamps. | Higher power (110mW vs. 90mW typical); lacks internal ±20mA clamps - needs external protection circuitry for overvoltage robustness. | Preferred when legacy ADI ecosystem integration or SPI interface is required; not drop-in due to different pinout and reference architecture. |
| ADS8686SIPWR | 6-channel, 16-bit, 1MSPS SAR ADC with integrated PGA and ±10.24V input range; uses serial interface (SPI) instead of parallel. | Higher speed but lower SNR (90.5dB vs. 92.3dB); includes programmable gain amplifier - adds flexibility but increases signal chain complexity. | Chosen for higher sample-rate applications where serial interface simplifies routing; not pin-compatible and requires different firmware interface logic. |
Compared with AD7656ASTZ and ADS8686SIPWR, the MAX11045ECB+ offers superior channel-to-channel timing coherence (100ps vs. ≥500ps), built-in overrange protection, and a ready-to-use 4.096V reference - reducing BOM count and layout risk in space-constrained industrial PCBs.
Availability
MAX11045ECB+ is available at Aetrix Electronics and suitable for power-grid protection, multiphase motor control, and automatic test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX11045ECB+ 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 MAX11045ECB+ belongs to Maxim's precision simultaneous-sampling ADC family, engineered specifically for high-fidelity acquisition in electric utility metering, motor drives, and power quality analyzers where phase coherence and noise immunity are critical.
FAQ
What is the maximum sampling rate per channel for the MAX11045ECB+?
The MAX11045ECB+ achieves a guaranteed 250ksps sampling rate per channel under full 16-bit operation with simultaneous acquisition across all six inputs. This rate is maintained over the full -40°C to +85°C temperature range and with internal reference enabled, as confirmed in the Electrical Characteristics table (fSAMPLE = 250ksps condition).
Does the MAX11045ECB+ require an external reference, or does it include one?
The MAX11045ECB+ includes a low-drift, accurate internal 4.096V reference (±5ppm/°C) that supports a ±5V input range. It also accepts external references from 3.0V to 4.25V via the REFIO pin, enabling custom full-scale ranges such as ±4.0V or ±5.2V - no external reference IC is required for standard operation.
What package type and pin count does the MAX11045ECB+ use?
The MAX11045ECB+ uses a 64-pin TQFP-EP (thin quad flat pack with exposed pad) package measuring 10mm × 10mm. The "+" suffix denotes lead(Pb)-free/RoHS compliance, and the exposed pad is internally connected to AGND for thermal performance - confirmed in the Ordering Information and Pin Description sections.
How does the MAX11045ECB+ handle overvoltage conditions on its analog inputs?
The MAX11045ECB+ integrates ±20mA input clamps on each analog input (CH0–CH5). When paired with an external series resistor (e.g., 250Ω), these clamps limit input voltage to ±7.5V absolute maximum while protecting the internal SAR core - eliminating the need for discrete TVS diodes in most industrial overvoltage scenarios.
Is the MAX11045ECB+ pin-compatible with other devices in the MAX1104x family?
The MAX11045ECB+ shares identical pinout and footprint with MAX11044ECB+, MAX11046ECB+, and their 'B' grade variants in the 64-pin TQFP-EP package. However, channel count differs (4/6/8), so software configuration and input routing must match the selected variant - mechanical compatibility does not imply functional interchangeability without design review.
MAX11045ECB+ 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:
- 6
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 6
- 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:
- -
MAX11045ECB+ FAQ
1.How can I place an order for MAX11045ECB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11045ECB+ 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 MAX11045ECB+ reliable?
The price and inventory of MAX11045ECB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11045ECB+ is usually 5 days.
3.What payment methods are accepted for MAX11045ECB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11045ECB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11045ECB+?
MAX11045ECB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11045ECB+ 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 MAX11045ECB+?
For technical support, including MAX11045ECB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11045ECB+ requirements.
6.How does Aetrix verify that MAX11045ECB+ is sourced from the original manufacturer or authorized distributors?
All MAX11045ECB+ 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 MAX11045ECB+ meets industry standards.
7.What is the process for return or replacement of MAX11045ECB+?
All MAX11045ECB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11045ECB+, 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 MAX11045ECB+ part is unused and in its original packaging.
Return procedure for MAX11045ECB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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