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Analog Devices Inc./Maxim Integrated MAX11150EUB+
- Part No.:
- MAX11150EUB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX11150EUB+.pdf
- Description:
- IC ADC 18BIT SAR 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,826
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Product details
Overview
MAX11150EUB+ from Maxim Integrated is an 18-bit, 500ksps successive approximation register (SAR) analog-to-digital converter with integrated ±7ppm/°C reference, unipolar 0V to +5V input range, and single 5V analog supply operation. It delivers 93.0dB SNR, -101.2dB THD at 10kHz, and ±3.7 LSB INL (typ), targeting high-precision data acquisition in industrial process control and medical instrumentation.
For engineers reviewing the MAX11150EUB+ datasheet, MAX11150EUB+ pinout, MAX11150EUB+ application, or MAX11150EUB+ equivalent, key selection considerations include its pseudo-differential input architecture, SPI/QSPI/MICROWIRE-compatible daisy-chain interface, 3mm × 5mm µMAX package, and guaranteed 18-bit no-missing-codes performance over -40°C to +85°C.
Technical Context
The MAX11150EUB+ employs a true sampling pseudo-differential input stage with 32pF input capacitance and 6MHz small-signal bandwidth, enabling accurate 18-bit sampling within 500ns acquisition time. Its internal track-and-hold acquires signals referenced to AIN-, supporting remote transducer sensing with >14.7 LSB/V common-mode rejection.
It integrates a buffered 4.096V reference with ±7ppm/°C drift and 0.1Ω output impedance, eliminating external reference components. The serial interface supports three modes-CS (3- or 4-wire) and daisy-chain-with busy indicator capability for simplified system synchronization and multichannel timing alignment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit with guaranteed no missing codes - ensures monotonicity and full code coverage for precision measurement systems. |
| Throughput Rate | 500ksps with zero pipeline latency - enables real-time sampling of fast transient events without delay-induced phase error. |
| SNR / THD | 93.0dB SNR and -101.2dB THD at 10kHz - supports high-fidelity digitization of low-distortion sensor outputs in medical and test equipment. |
| INL / DNL | ±3.7 LSB INL (typ) and ±0.5 LSB DNL (typ) - maintains linearity critical for calibration-critical applications like automatic test equipment. |
| Reference Accuracy | 4.096V ±0.004V initial tolerance with ±7ppm/°C drift - reduces system-level calibration burden and improves temperature stability in field-deployed instruments. |
| Power Consumption | 36.2mW at 500ksps (VDD = 5V, OVD = 3.3V); 10μA shutdown current - enables low-power portable or battery-backed DAQ designs. |
| Input Range | 0V to +5V unipolar (AIN+ relative to AIN-) with ±0.1V AIN- range - supports pseudo-differential measurement of grounded or floating sensors. |
Pinout & Package
MAX11150EUB+ is housed in a 10-pin, 3mm × 5mm µMAX package with exposed pad (thermal enhancement), rated for -40°C to +85°C operation. Pin layout follows standard top-view configuration with GND on Pin 5 and VDD on Pin 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF (Pin 1) | Internal reference bypass node | Requires low-ESR 10µF X5R/X7R capacitor placed <1mm from pin - critical for reference stability and noise suppression. |
| VDD (Pin 2) | Analog power supply (4.75–5.25V) | Must be decoupled with 0.1µF + 10µF capacitors - powers SAR core, reference buffer, and analog front-end. |
| AIN+ (Pin 3) | Positive pseudo-differential analog input | Accepts 0V to +5.1V absolute voltage; sampled against AIN- - enables ratiometric or remote ground-referenced sensing. |
| AIN- (Pin 4) | Negative pseudo-differential analog input | Range: -0.1V to +0.1V - defines common-mode point and enables CMR optimization in noisy environments. |
| GND (Pin 5) | Analog/digital ground reference | Single ground plane required; connects to REF bypass cap and PCB thermal pad - essential for PSR and SNR integrity. |
| CNVST (Pin 6) | Conversion start and interface mode select | Rising edge initiates conversion; SDI state at this edge selects CS vs. daisy-chain mode - enables flexible multi-ADC synchronization. |
| SDO (Pin 7) | Serial data output with optional busy indicator | Outputs 18-bit result MSB-first; asserts busy bit when enabled - eliminates need for external timeout logic in deterministic systems. |
| SCLK (Pin 8) | Serial clock input | Supports 14ns min period (VOVDD > 4.5V); clocks data on falling edge - determines maximum interface speed and jitter sensitivity. |
| SDI (Pin 9) | Serial data input / mode select | Low at CNVST rising edge enables daisy-chain; high enables CS mode - configures interface topology without external logic. |
| OVDD (Pin 10) | Digital I/O supply (2.3–5.25V) | Independent of VDD - allows interfacing with 2.5V/3.3V/5V controllers while maintaining analog accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Pseudo-differential input architecture | Enables true differential sampling between AIN+ and AIN- with >14.7 LSB/V CMR - improves noise immunity in industrial sensor interfaces. |
| Integrated reference with buffer | Eliminates external reference IC and buffer op-amp - saves ≥30mm² PCB area and reduces BOM cost in space-constrained DAQ modules. |
| Daisy-chain serial interface | Allows cascading of multiple MAX11150EUB+ devices on shared SCLK/CNVST lines - simplifies multichannel simultaneous sampling without FPGA glue logic. |
| Overvoltage input clamps | Protects AIN+ up to ±20mA fault current with turn-on threshold at VDD ±300mV - enables direct connection to industrial field wiring without external protection diodes. |
| Low acquisition time (500ns) | Supports multiplexed multi-channel sampling at full 500ksps aggregate rate - allows 16-channel system to sample each channel at 31.25ksps with no settling penalty. |
Applications
| Industrial Process Control | Data Acquisition Systems |
|---|---|
Use Scenario: Monitoring pressure, temperature, and flow transducers in PLC-based factory automation systems with 4–20mA loop integration. IC Role / Device Role / Timing Role: Primary ADC capturing sensor outputs at ≤10ksps with <±0.01% full-scale accuracy and long-term drift stability. Use Value: Internal reference and ±3.7 LSB INL ensure calibration intervals exceed 12 months in fixed-installation environments. | Use Scenario: Modular rack-mounted DAQ units acquiring synchronized waveforms from vibration, acoustic, and strain sensors. IC Role / Device Role / Timing Role: High-resolution sampling node in multi-board systems using daisy-chained SDO for deterministic 18-bit data capture. Use Value: 500ns acquisition time and busy-indicator interface enable precise inter-channel skew control (<5ns) across 8+ channels. |
| Medical Instrumentation | Automatic Test Equipment |
Use Scenario: Patient monitoring devices measuring ECG, EEG, and bioimpedance signals requiring low-noise, low-distortion digitization. IC Role / Device Role / Timing Role: Front-end ADC in battery-powered handheld diagnostics with ultra-low power shutdown mode. Use Value: 93.0dB SNR and 10μA shutdown current extend operating time per charge while preserving diagnostic fidelity. | Use Scenario: Production-line ATE platforms validating analog ICs, sensors, and RF components with metrology-grade DC/AC accuracy. IC Role / Device Role / Timing Role: Calibration-reference ADC in self-test subsystems verifying stimulus generator linearity and offset. Use Value: Guaranteed 18-bit no-missing-codes and ±0.5 LSB DNL support pass/fail testing to 16-bit ENOB specifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IDRCT | 16-bit, 1MSPS, external reference required, 2.5V supply only, no daisy-chain mode | Better speed but lower resolution; requires external reference and level-shifting for 5V systems | Select when throughput >500ksps is mandatory and 16-bit resolution suffices; avoid if reference integration or 5V compatibility is needed. |
| AD7986BCPZ-RL7 | 18-bit, 1MSPS, ±2.5V input range, no internal reference, 4.096V external ref required | Higher speed and bipolar input support; lacks integrated reference and overvoltage clamps | Choose for high-speed bipolar signal capture where external reference infrastructure already exists; not drop-in for unipolar 0–5V systems. |
Compared with ADS8860IDRCT and AD7986BCPZ-RL7, the MAX11150EUB+ uniquely combines 18-bit resolution, integrated 4.096V reference, unipolar 0–5V input, and daisy-chain capability in a 3mm × 5mm package - making it optimal for compact, self-contained, high-accuracy DAQ nodes where board space and calibration simplicity are critical.
Availability
MAX11150EUB+ is available at Aetrix Electronics and suitable for industrial process control, medical instrumentation, and automatic test equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX11150EUB+ 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 MAX11150EUB+ belongs to Maxim's high-resolution SAR ADC family engineered for metrology-grade data acquisition where DC accuracy, AC performance, and system integration are prioritized over raw speed.
FAQ
What is the absolute maximum input voltage rating for the MAX11150EUB+ AIN+ pin?
The MAX11150EUB+ AIN+ pin has an absolute maximum rating of -0.3V to (VDD + 0.3V), with clamping active beyond -300mV or (VDD + 300mV). Under normal operation, the recommended input range is -0.1V to +5.1V (relative to GND), and the functional 0V to +5V measurement range is defined with respect to AIN-. Exceeding these limits risks permanent damage or degraded INL performance.
Does the MAX11150EUB+ support true differential input mode?
No, the MAX11150EUB+ implements pseudo-differential input architecture: AIN+ is sampled relative to AIN-, but AIN- is not actively driven or inverted. It accepts a narrow common-mode range (-0.1V to +0.1V) and provides >14.7 LSB/V CMR. For true differential (±5V) inputs, external signal conditioning or a different ADC such as the MAX11166 is required.
How does the busy indicator feature work on the MAX11150EUB+ SDO pin?
The MAX11150EUB+ SDO pin outputs a busy indicator bit before the 18-bit conversion result when enabled. In CS mode, busy indication activates if CNVST or SDI is low at conversion completion; in daisy-chain mode, it activates if SCLK is high at the CNVST rising edge. One extra SCLK cycle is required to shift out the busy bit before reading data - eliminating external timing circuits.
Can the MAX11150EUB+ operate with OVDD = 2.5V while VDD = 5V?
Yes, the MAX11150EUB+ supports independent digital and analog supplies: OVDD may range from 2.3V to 5.25V while VDD is maintained at 4.75V–5.25V. At OVDD = 2.5V, SCLK period must be ≥25ns and VIH/VIL thresholds scale to 0.7×/0.3×2.5V. This enables direct interfacing with 2.5V FPGAs or microcontrollers without level shifters.
What decoupling is required for the REF pin of the MAX11150EUB+?
The MAX11150EUB+ REF pin requires a minimum 10µF X5R or X7R ceramic capacitor (16V rating) placed within 1mm of the pin and connected directly to the local GND plane. A 0.1µF capacitor in parallel is recommended for high-frequency noise suppression. Failure to meet this requirement degrades reference stability, increasing INL drift and reducing SNR by up to 3dB.
MAX11150EUB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 18
- Sampling Rate (Per Second):
- 500k
- Number of Inputs:
- 1
- Input Type:
- Pseudo-Differential
- Data Interface:
- SPI, DSP
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 2.3V ~ 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-uMAX/uSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11150EUB+ FAQ
1.How can I place an order for MAX11150EUB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11150EUB+ 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 MAX11150EUB+ reliable?
The price and inventory of MAX11150EUB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11150EUB+ is usually 5 days.
3.What payment methods are accepted for MAX11150EUB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11150EUB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11150EUB+?
MAX11150EUB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11150EUB+ 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 MAX11150EUB+?
For technical support, including MAX11150EUB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11150EUB+ requirements.
6.How does Aetrix verify that MAX11150EUB+ is sourced from the original manufacturer or authorized distributors?
All MAX11150EUB+ 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 MAX11150EUB+ meets industry standards.
7.What is the process for return or replacement of MAX11150EUB+?
All MAX11150EUB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11150EUB+, 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 MAX11150EUB+ part is unused and in its original packaging.
Return procedure for MAX11150EUB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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