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Analog Devices Inc./Maxim Integrated MAX11048ECB+
- Part No.:
- MAX11048ECB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-TQFP Exposed Pad
- Datasheet:
-
MAX11048ECB+.pdf
- Description:
- IC ADC 16BIT PAR 250KSPS 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,955
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Product details
Overview
The MAX11048ECB+ 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 64-pin TQFP-EP package. It operates from 4.75V–5.25V analog and 2.7V–5.25V digital supplies, accepts 0–5V inputs, and delivers 92.3dB SNR at 10kHz for precision power-grid protection and multiphase motor control.
For engineers reviewing the MAX11048ECB+ datasheet, MAX11048ECB+ pinout, MAX11048ECB+ application, or MAX11048ECB+ equivalent, this device supports high-fidelity waveform capture in synchronized multi-channel systems where channel-to-channel matching (<100ps T/H skew), low drift reference (±4ppm/°C), and overrange input clamping (±20mA) are critical selection criteria.
Technical Context
This ADC employs independent SAR architecture with dedicated track-and-hold circuitry per channel, enabling true simultaneous sampling across all six inputs without inter-channel acquisition timing skew. Its 3µs conversion time and 10ns aperture delay support high-speed transient capture in dynamic systems like vibration analysis and automatic test equipment.
The device integrates a low-drift 4.096V bandgap reference with ±4ppm/°C tempco and supports external reference inputs from 3.0V to 4.25V. Its bidirectional 20MHz parallel interface (DB0–DB15) allows direct host CPU connection without level-shifting, while separate AVDD/DVDD rails enable flexible interfacing with 3.3V or 5V logic domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - Provides 65,536 distinct output codes for high-precision voltage measurement in industrial sensing. |
| Sampling Rate | 250ksps per channel - Enables real-time capture of 100kHz bandwidth signals across all 6 channels simultaneously. |
| Input Range | 0 to +5V - Matches standard industrial sensor outputs and PLC analog input ranges without signal conditioning. |
| SNR | 92.3dB (typ) at 10kHz - Delivers >15 effective bits of dynamic range for clean waveform reconstruction in power-quality monitoring. |
| Channel Matching | ±0.01%FSR gain error matching - Ensures consistent amplitude response across all 6 channels for accurate phase and imbalance calculations. |
| Aperture Jitter | 50ps RMS - Limits sampling uncertainty to <0.03° phase error at 10kHz, critical for synchronized motor current analysis. |
| Supply Range | AVDD: 4.75–5.25V; DVDD: 2.7–5.25V - Allows direct interface with 3.3V microcontrollers while maintaining full analog performance. |
Pinout & Package
Package: 64-pin TQFP-EP (10mm × 10mm, exposed pad). Thermal pad must be connected to AGND for optimal thermal performance and noise immunity.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH5 | Analog Input Channels | Six independent, overrange-protected (±20mA clamp) differential-capable inputs accepting 0–5V; each with dedicated T/H. |
| DB0–DB15 | Parallel Data Bus | 16-bit bidirectional bus for reading conversion results or writing configuration registers; compatible with 3.3V/5V hosts. |
| CONVST | Convert Start | Rising-edge-triggered command initiating simultaneous sample hold and conversion across all channels. |
| EOC | End-of-Conversion | Active-low open-drain output signaling completion of conversion; used for interrupt-driven data readout. |
| REFIO | Reference I/O | Internal 4.096V reference output or external reference input (3.0–4.25V); requires 0.1µF bypass to AGND. |
| RDC / RDC_SENSE | Reference Decoupling | RDC connects to ≥80µF bulk capacitance; RDC_SENSE provides feedback for reference buffer stability in TQFP package. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous Sampling | True concurrent acquisition across all 6 channels with <100ps channel-to-channel T/H matching for phase-coherent measurements. |
| Overrange Protection | Integrated ±20mA input clamps on each channel allow robust operation with simple series resistor-no external TVS needed. |
| Flexible Reference | Low-drift 4.096V internal reference (±4ppm/°C) or user-selectable external reference (3.0–4.25V) for custom full-scale ranges up to +5.2V. |
| High-Impedance Inputs | 1GΩ input impedance enables direct connection to high-Z sensors and voltage dividers without loading errors. |
| Low-Power Shutdown | 10µA shutdown current (both AVDD and DVDD) preserves system power budget during idle periods without register loss. |
Applications
| Power-Grid Protection | Multiphase Motor Control |
|---|---|
|
Use Scenario: Real-time monitoring of line voltage, current, and harmonic content in medium-voltage substations for fault detection and relay tripping. IC Role / Device Role / Timing Role: Simultaneous 6-channel sampling captures synchronized voltage/current waveforms across three phases plus neutral and auxiliary signals. Use Value: <100ps channel matching ensures sub-degree phase accuracy for sequence component calculation and directional overcurrent protection. |
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase PMSM/induction motors using dual current shunt sensing and DC-link voltage feedback. IC Role / Device Role / Timing Role: Simultaneous sampling of three phase currents and DC-bus voltage enables precise torque and flux estimation without timing-induced cross-coupling. Use Value: 250ksps/channel throughput supports >10kHz PWM carrier frequencies with minimal current sampling delay for stable FOC loops. |
| Vibration Analysis | Automatic Test Equipment |
|
Use Scenario: High-fidelity capture of multi-axis accelerometer and strain gauge outputs from rotating machinery for spectral analysis and bearing fault detection. IC Role / Device Role / Timing Role: Simultaneous 6-channel acquisition preserves phase relationships between orthogonal vibration modes for accurate FFT-based diagnostics. Use Value: 92.3dB SNR and 50ps aperture jitter yield >15 ENOB at 10kHz, resolving subtle harmonics and sidebands in early-stage mechanical faults. |
Use Scenario: Automated functional testing of mixed-signal PCBs requiring synchronized stimulus generation and multi-point analog response measurement. IC Role / Device Role / Timing Role: Simultaneous sampling of multiple DUT outputs (e.g., op-amp outputs, sensor interfaces) referenced to a common trigger event. Use Value: Independent T/H per channel eliminates sequential sampling artifacts, enabling true multi-node correlation analysis for production test pass/fail decisions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar simultaneous-sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606BSTZ | 8-channel, 16-bit, 200ksps, internal 2.5V ref, SPI interface only | Lacks parallel interface; lower throughput; no 0–5V input range without external scaling | Choose AD7606BSTZ when SPI interface suffices and 8-channel count outweighs 50ksps/channel speed loss. |
| ADS8686SIPWR | 6-channel, 16-bit, 1MSPS, integrated PGA, SPI interface, 5V supply only | Higher speed but no simultaneous sampling (sequential with <100ns skew); no internal 4.096V ref | Choose ADS8686SIPWR when programmable gain and higher single-channel rate are prioritized over true simultaneity and reference flexibility. |
Compared with AD7606BSTZ and ADS8686SIPWR, the MAX11048ECB+ uniquely combines 6-channel simultaneous sampling at 250ksps, 0–5V input range, 4.096V internal reference, and 20MHz parallel interface-making it optimal for deterministic, high-throughput, phase-sensitive industrial measurement systems.
Availability
MAX11048ECB+ is available at Aetrix Electronics and suitable for power-grid protection, multiphase motor control, and vibration analysis requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX11048ECB+ 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 power management ICs for industrial, medical, and communications applications.
The MAX11047–MAX11049 family targets high-fidelity, multi-channel data acquisition in electric utility, motor drive, and test instrumentation systems where simultaneity, channel matching, and rugged input protection are essential.
FAQ
What is the maximum input voltage range supported by the MAX11048ECB+?
The MAX11048ECB+ accepts a 0 to +5V unipolar input range when using its internal 4.096V reference. With an external reference (3.0V–4.25V), the full-scale input range scales linearly to +3.7V–+5.2V. Input pins are protected to ±2.5V relative to AGND and feature ±20mA internal clamps for overvoltage resilience.
Does the MAX11048ECB+ support true simultaneous sampling across all six channels?
Yes, the MAX11048ECB+ features independent track-and-hold (T/H) and SAR circuitry for each of its six channels, enabling true simultaneous sampling with <100ps channel-to-channel T/H matching. This ensures phase-coherent acquisition critical for power quality and motor control applications.
What is the role of the RDC and RDC_SENSE pins on the MAX11048ECB+?
RDC is the reference buffer decoupling pin, requiring ≥80µF total capacitance to AGND for stable internal reference operation. RDC_SENSE is a dedicated feedback sense pin (present only in TQFP packages like MAX11048ECB+) that improves reference regulation accuracy by compensating for PCB trace resistance between RDC and the internal buffer.
Can the MAX11048ECB+ operate with a 3.3V digital supply while maintaining full analog performance?
Yes, the MAX11048ECB+ supports DVDD from 2.7V to 5.25V independently of AVDD (4.75V–5.25V). At DVDD = 3.3V, digital supply current is 6.5mA (typ), and all timing specifications-including 20MHz parallel interface operation-are fully guaranteed without performance degradation.
How does the MAX11048ECB+ handle input overrange conditions?
The MAX11048ECB+ includes internal ±20mA input clamps on each analog input (CH0–CH5). When voltage exceeds the 0–5V range, these clamps limit current flow, protecting the internal circuitry. A simple external series resistor (e.g., 100Ω) suffices for robust overvoltage tolerance up to ±20V without additional components.
MAX11048ECB+ 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:
- -
MAX11048ECB+ FAQ
1.How can I place an order for MAX11048ECB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11048ECB+ 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 MAX11048ECB+ reliable?
The price and inventory of MAX11048ECB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11048ECB+ is usually 5 days.
3.What payment methods are accepted for MAX11048ECB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11048ECB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11048ECB+?
MAX11048ECB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11048ECB+ 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 MAX11048ECB+?
For technical support, including MAX11048ECB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11048ECB+ requirements.
6.How does Aetrix verify that MAX11048ECB+ is sourced from the original manufacturer or authorized distributors?
All MAX11048ECB+ 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 MAX11048ECB+ meets industry standards.
7.What is the process for return or replacement of MAX11048ECB+?
All MAX11048ECB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11048ECB+, 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 MAX11048ECB+ part is unused and in its original packaging.
Return procedure for MAX11048ECB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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