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Analog Devices Inc./Maxim Integrated MAX11048ETN+
- Part No.:
- MAX11048ETN+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 56-WFQFN Exposed Pad
- Datasheet:
-
MAX11048ETN+.pdf
- Description:
- IC ADC 16BIT SAR 56TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,815
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Product details
Overview
The MAX11048ETN+ 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, 4.096V internal reference, and 56-pin TQFN-EP (8mm × 8mm) package. It accepts 0 to +5V single-ended inputs, features ±20mA input clamps for overrange protection, and targets high-precision power-grid monitoring and multiphase motor control systems.
For engineers reviewing the MAX11048ETN+ datasheet, MAX11048ETN+ pinout, MAX11048ETN+ application, or MAX11048ETN+ equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in synchronized acquisition systems, and confirmed alternative parts with documented functional and packaging differences.
Technical Context
The MAX11048ETN+ implements six independent SAR ADCs with dedicated track-and-hold circuits, enabling true simultaneous sampling across all channels without inter-channel skew. Its 100ps channel-to-channel T/H matching and 10ns aperture delay ensure precise phase coherence for waveform analysis and power quality measurement.
It supports flexible reference configuration-internal 4.096V bandgap reference (±4ppm/°C drift) or external 3.0V–4.25V reference-and operates from separate 4.75V–5.25V analog and 2.7V–5.25V digital supplies, eliminating level-shifting requirements when interfacing with 3.3V or 5V host processors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - Delivers 1 LSB = 76.3µV full-scale quantization step over 0–5V input range. |
| Sampling Rate | 250ksps per channel - Enables 4µs minimum inter-sample interval for real-time 6-channel waveform capture. |
| INL | ±0.65 LSB max - Ensures monotonicity and <0.01% full-scale linearity error for calibration-critical measurements. |
| SNR | 92.3 dB typical - Supports >15 effective number of bits (ENOB) at 10kHz input frequency. |
| Aperture Jitter | 50 ps RMS - Limits sampling uncertainty to <0.03° phase error at 100kHz signal frequency. |
| Input Clamp Current | ±20 mA per channel - Allows robust overvoltage tolerance with only a series resistor for field-side protection. |
| Digital Interface | 20MHz bidirectional parallel bus - Provides sub-100ns read/write timing margins for FPGA or microcontroller integration. |
Pinout & Package
MAX11048ETN+ uses a 56-pin TQFN-EP (8mm × 8mm, exposed pad) package. The exposed pad must be soldered to a large analog ground plane for thermal and noise performance. Pin numbering follows standard top-view orientation with pin 1 marked by a dot or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH5 | Analog Input Channels | Six independent single-ended inputs with high-impedance (>1GΩ), each protected by ±20mA internal clamp diodes. |
| DB0–DB15 | Parallel Data Bus | 16-bit bidirectional bus: outputs conversion results and accepts configuration register writes via CR0–CR3 pins. |
| CONVST | Convert Start Trigger | Rising edge initiates simultaneous sampling and conversion across all six channels; low state enables acquisition mode. |
| EOC | End-of-Conversion Flag | Active-low open-drain output signals completion of all six conversions; used for interrupt-driven data reads. |
| REFIO | Reference I/O | Configurable as internal 4.096V reference output or external reference input (3.0V–4.25V); requires 0.1µF AGND bypass. |
| RDC | Reference Decoupling | Four dedicated pins tied together and bypassed to AGND with ≥80µF total capacitance to stabilize reference buffer. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous Sampling | Six independent T/H circuits eliminate channel skew; 100ps matching enables accurate phase-resolved power analysis. |
| Internal Reference | Low-drift 4.096V bandgap reference (±4ppm/°C) provides stable 0–5V input range without external components. |
| Overrange Protection | Integrated ±20mA input clamps allow direct connection to industrial sensors with only one external series resistor per channel. |
| Flexible Power Supplies | Separate AVDD (4.75–5.25V) and DVDD (2.7–5.25V) rails enable direct interface with 3.3V FPGAs or 5V microcontrollers-no level shifters needed. |
| High-Speed Parallel Interface | 20MHz bidirectional bus with configurable RD/WR/CS timing supports deterministic data transfer in real-time control loops. |
Applications
| Power-Grid Protection | Multiphase Motor Control |
|---|---|
Use Scenario: Real-time detection of voltage sags, swells, harmonics, and fault currents in medium-voltage substations using synchronized 6-channel voltage/current sampling. IC Role / Device Role / Timing Role: Simultaneous-sampling ADC capturing all three-phase voltages and currents with sub-100ps inter-channel alignment for sequence component calculation. Use Value: Enables IEC 61000-4-30 Class A compliance with <100ns time alignment between channels, reducing phase-error-induced misclassification of transient events. | Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase PMSM/BLDC motors requiring synchronized current sensing on all three phases plus DC-link voltage and temperature. IC Role / Device Role / Timing Role: Six-channel ADC digitizing three motor-phase currents, DC-bus voltage, and two temperature sensor outputs with zero inter-channel latency. Use Value: Eliminates software-based phase compensation, improving torque ripple suppression by >40% versus sequential-sampling alternatives. |
| Vibration Analysis | Automatic Test Equipment |
Use Scenario: Multi-axis vibration monitoring of rotating machinery (e.g., turbines, compressors) using accelerometers on orthogonal axes and casing-mounted sensors. IC Role / Device Role / Timing Role: Simultaneous acquisition of up to six vibration transducers to preserve phase relationships critical for modal analysis and bearing fault diagnosis. Use Value: Maintains coherent time-domain records across all channels, enabling accurate FFT-based spectral leakage reduction and envelope demodulation. | Use Scenario: High-speed functional testing of mixed-signal PCBs where multiple analog nodes (power rails, sensor outputs, DAC feedback) must be validated concurrently. IC Role / Device Role / Timing Role: 6-channel ADC captures system-level analog responses under stimulus conditions with deterministic timing for pass/fail decision logic. Use Value: Reduces test cycle time by 65% compared to multiplexed solutions, supporting >100 units/hour production test throughput. |
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, but uses serial SPI interface (not parallel); no internal reference; requires external REF. | Better suited for space-constrained designs with FPGA SPI masters; lacks integrated overrange clamps. | Select AD7656ASTZ when board area is limited and SPI interface simplifies routing, but add external reference and clamp circuitry. |
| ADS8588SIPM | 8-channel, 16-bit, parallel interface, but only 250ksps aggregate (not per channel); uses internal 4.096V reference. | Higher channel count but lower per-channel throughput; optimized for cost-sensitive data loggers rather than real-time control. | Choose ADS8588SIPM when acquiring >6 signals at lower update rates (<50ksps/channel) and lower BOM cost is prioritized over timing precision. |
Compared with AD7656ASTZ and ADS8588SIPM, the MAX11048ETN+ uniquely delivers true per-channel 250ksps simultaneous sampling with integrated reference and overrange protection-critical for power quality analyzers and servo drives requiring deterministic latency and minimal external components.
Availability
MAX11048ETN+ is available at Aetrix Electronics and suitable for power-grid protection systems, multiphase motor controllers, and vibration monitoring equipment requiring stable component supply, long-term manufacturability, and guaranteed RoHS-compliant sourcing.
Supply support for MAX11048ETN+ 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 precision analog, mixed-signal, and high-reliability ICs for industrial, automotive, and communications infrastructure markets.
The MAX11047–MAX11049 family targets high-fidelity synchronized data acquisition in electric utility, motor control, and test instrumentation-emphasizing channel coherence, reference stability, and rugged input protection.
FAQ
What is the maximum sampling rate per channel for the MAX11048ETN+?
The MAX11048ETN+ achieves 250ksps per channel with true simultaneous sampling across all six analog inputs. This means each channel completes a full 16-bit conversion every 4µs, with no inter-channel latency-verified in the Electrical Characteristics table under "Throughput Rate" with tCON = 3µs and tACQ = 1µs. This rate is maintained over the full -40°C to +85°C operating range.
Does the MAX11048ETN+ require an external reference voltage?
No, the MAX11048ETN+ includes a low-drift 4.096V internal reference (±4ppm/°C) that directly supports a 0–5V input range. REFIO can be used as an output for this internal reference or configured as an input for an external 3.0V–4.25V source. The internal reference eliminates BOM cost and layout complexity unless higher accuracy or custom full-scale ranges are required.
How does the MAX11048ETN+ handle overvoltage conditions on its analog inputs?
The MAX11048ETN+ integrates ±20mA input clamps on each CH0–CH5 pin. When an input exceeds the 0–5V range, these clamps conduct current to AGND or AVDD, limiting voltage excursion. A single external series resistor (e.g., 1kΩ) suffices for field-side protection-no external TVS diodes or op-amp buffers are needed for most industrial transients.
What digital supply voltage range is supported by the MAX11048ETN+?
The MAX11048ETN+ accepts DVDD from 2.7V to 5.25V, enabling direct interfacing with 3.3V FPGAs, 5V microcontrollers, or mixed-voltage systems without level shifters. Digital I/O thresholds scale with DVDD (VIH = 2V min, VIL = 0.8V max), and output drive strength is specified at 1.2mA VOH and 1mA VOL-fully compatible with standard CMOS logic families.
Can the MAX11048ETN+ operate with different analog and digital ground planes?
No-the MAX11048ETN+ requires AGND and DGND to be connected at a single point near the device (per Layout, Grounding, and Bypassing section). AGNDS pins must also tie to AGND. Separating analog and digital grounds violates the recommended grounding scheme and degrades PSR, SNR, and channel matching. The datasheet specifies DGND–AGND voltage difference must stay within ±0.3V.
MAX11048ETN+ 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:
- 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:
- 56-TQFN (8x8)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11048ETN+ FAQ
1.How can I place an order for MAX11048ETN+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11048ETN+ 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 MAX11048ETN+ reliable?
The price and inventory of MAX11048ETN+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11048ETN+ is usually 5 days.
3.What payment methods are accepted for MAX11048ETN+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11048ETN+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11048ETN+?
MAX11048ETN+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11048ETN+ 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 MAX11048ETN+?
For technical support, including MAX11048ETN+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11048ETN+ requirements.
6.How does Aetrix verify that MAX11048ETN+ is sourced from the original manufacturer or authorized distributors?
All MAX11048ETN+ 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 MAX11048ETN+ meets industry standards.
7.What is the process for return or replacement of MAX11048ETN+?
All MAX11048ETN+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11048ETN+, 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 MAX11048ETN+ part is unused and in its original packaging.
Return procedure for MAX11048ETN+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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