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Analog Devices Inc./Maxim Integrated MAX11632EEG+T
- Part No.:
- MAX11632EEG+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX11632EEG+T.pdf
- Description:
- IC ADC 12BIT SAR 24QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,138
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Product details
Overview
The MAX11632EEG+T from Maxim Integrated is a 12-bit, 300ksps serial-output analog-to-digital converter with integrated 4.096V reference, 16-channel single-ended analog multiplexer, on-chip 16-entry FIFO, internal clock, scan mode, and AutoShutdown™. It operates from a +4.75V to +5.25V supply and features SPI/QSPI/MICROWIRE-compatible 3-wire interface. It is used in industrial control systems for high-accuracy voltage monitoring of multiple sensor inputs.
For engineers reviewing the MAX11632EEG+T datasheet, MAX11632EEG+T pinout, MAX11632EEG+T application, or MAX11632EEG+T equivalent, key selection criteria include unipolar input range (0 to 4.096V), ±1 LSB INL/DNL accuracy over –40°C to +85°C, FIFO-buffered burst acquisition, internal reference stability (±20 ppm/°C), and 24-pin QSOP package compatibility with space-constrained PCB layouts.
Technical Context
The MAX11632EEG+T uses a successive-approximation register (SAR) architecture with integrated track-and-hold, supporting unipolar single-ended inputs only. Its internal 4.096V reference is factory-trimmed and exhibits ±20 ppm/°C temperature coefficient, enabling stable full-scale measurement without external precision references.
It implements four programmable clock modes via CKSEL bits, including externally timed mode (CKSEL = 11) for 300ksps sampling and internally timed scan modes (CKSEL = 00/01/10) that decouple conversion sequencing from the serial bus-enabling background data acquisition while the host processor handles other tasks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit SAR - delivers 4096 discrete output codes for precise voltage quantization |
| Sampling Rate | 300ksps max (externally clocked) - supports real-time capture of fast transients up to 100kHz full-linear bandwidth |
| Input Channels | 16 single-ended - enables consolidated monitoring of multiple sensors or system nodes without external MUX |
| Reference Voltage | 4.096V internal - provides exact 1mV/LSB scaling and eliminates need for external reference component |
| DC Accuracy | ±1 LSB INL, ±1 LSB DNL - guarantees monotonicity and no missing codes across full temperature range |
| Supply Range | +4.75V to +5.25V - compatible with standard 5V logic rails and industrial power domains |
| Interface | 10MHz 3-wire SPI/QSPI/MICROWIRE - simplifies host integration with minimal GPIO usage and no level-shifting |
Pinout & Package
MAX11632EEG+T is housed in a 24-pin QSOP package (5.0mm × 7.5mm, 0.635mm pitch), optimized for automated assembly and thermal performance in industrial environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN14 | Analog Input | 15 dedicated single-ended input channels; AIN0–AIN14 mapped directly to internal mux |
| CNVST/AIN15 | Active-Low Conversion Start / Analog Input 15 | Configurable dual-function pin: either trigger for autonomous conversions or 16th analog input |
| REF | Reference Input/Output | Provides 4.096V internal reference; must be bypassed with 0.1µF capacitor to GND |
| GND | Analog/Digital Ground | Common return for analog signal paths and digital I/O; requires low-impedance PCB connection |
| VDD | Power Supply | +4.75V to +5.25V supply; requires local 0.1µF ceramic bypass capacitor |
| CS | Chip Select | Active-low enable for serial interface; places DOUT in high-impedance state when high |
| SCLK | Serial Clock | Input clock for data transfer; supports up to 10MHz; 40%–60% duty cycle required |
| DIN | Serial Data Input | Latches command bytes (e.g., setup, conversion registers) on rising SCLK edge |
| DOUT | Serial Data Output | Outputs 16-bit result MSB-first on falling SCLK edge; valid after EOC assertion |
| EOC | End-of-Conversion Flag | Active-low open-drain output signaling completion of last conversion; used for interrupt-driven readout |
Key Features
| Feature | Design Value |
|---|---|
| On-chip 16-entry FIFO | Enables autonomous multi-channel acquisition without host intervention-reduces CPU load and serial bus contention |
| Internal 4.096V reference | Eliminates external reference IC and associated layout complexity while maintaining ±20 ppm/°C drift over temperature |
| Four programmable clock modes | Supports flexible timing architectures: externally triggered (300ksps), CNVST-gated, internally scanned, or software-controlled conversions |
| AutoShutdown™ | Reduces supply current to ≤5µA during idle periods-critical for battery-backed or energy-sensitive industrial nodes |
| Scan mode with internal averaging | Permits configurable channel sequencing and noise reduction (up to 64× averaging) without firmware overhead |
Applications
| Industrial Process Monitoring | Patient Vital Sign Acquisition |
|---|---|
Use Scenario: Continuous voltage logging from 12 thermocouple amplifiers and 4 pressure transducers in a PLC-based manufacturing line. IC Role / Device Role / Timing Role: Centralized 16-channel ADC performing synchronized, FIFO-buffered sampling at 10ksps per channel with internal averaging to suppress 50/60Hz noise. Use Value: Reduces system BOM by eliminating 16 discrete ADCs and external reference; FIFO allows uninterrupted acquisition during host communication gaps. | Use Scenario: Multi-parameter bedside monitor acquiring ECG, SpO₂, NIBP, and temperature signals simultaneously. IC Role / Device Role / Timing Role: High-accuracy, low-noise ADC converting analog front-end outputs with ±1 LSB linearity to ensure clinical-grade measurement fidelity. Use Value: Internal 4.096V reference ensures consistent 1mV/LSB scaling across all channels-critical for calibrated diagnostic output. |
| Data Logging in Harsh Environments | Automated Test Equipment (ATE) |
Use Scenario: Ruggedized field recorder capturing voltage, current, and humidity sensor outputs over extended temperature ranges (–40°C to +85°C). IC Role / Device Role / Timing Role: Primary data acquisition engine operating in AutoShutdown™ mode between 1s-interval bursts, minimizing power draw from lithium-thionyl chloride battery. Use Value: Guaranteed ±1 LSB INL/DNL over full temperature range ensures calibration validity without periodic recalibration in remote deployments. | Use Scenario: Modular ATE slot card requiring rapid, repeatable measurements across 16 test points with deterministic timing. IC Role / Device Role / Timing Role: High-speed 300ksps ADC in externally clocked mode (CKSEL=11), synchronized to system master clock for jitter-free sampling. Use Value: 10MHz SPI interface and EOC flag enable tight integration with FPGA-based controller-achieving sub-microsecond timestamp resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel, 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8684IPWR | 4-channel, 16-bit, SAR ADC with integrated ±10.24V reference; requires external clock; no FIFO; 20-pin TSSOP | Higher resolution but fewer channels; lacks FIFO and autonomous scan capability | Select when absolute precision > speed/channel count; not suitable for 16-channel burst acquisition |
| AD7949BCPZ-RL7 | 8-channel, 14-bit, SAR ADC with internal 2.5V reference; SPI interface; no FIFO; 20-pin LFCSP | Intermediate resolution and channel count; smaller footprint but no FIFO or AutoShutdown™ | Choose for compact, medium-accuracy designs where 8 channels suffice and power is less constrained |
Compared with ADS8684IPWR and AD7949BCPZ-RL7, the MAX11632EEG+T uniquely combines 16-channel count, on-chip FIFO, AutoShutdown™, and 4.096V reference in a single 24-pin QSOP-making it optimal for space-limited, multi-sensor industrial data loggers requiring autonomous operation.
Availability
MAX11632EEG+T is available at Aetrix Electronics and suitable for industrial control systems, patient monitoring devices, and data-logging equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX11632EEG+T 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 and mixed-signal ICs for industrial, medical, and communications applications.
The MAX11632EEG+T belongs to the MAX116xx family of low-power, multichannel SAR ADCs engineered for system supervision and instrumentation-emphasizing integrated functionality, small footprint, and guaranteed performance across extended temperature ranges.
FAQ
What is the maximum sampling rate achievable with the MAX11632EEG+T?
The MAX11632EEG+T achieves a maximum sampling rate of 300ksps when operated in externally clocked mode (CKSEL = 11) with an SCLK frequency of up to 4.8MHz. This mode disables scanning and averaging but delivers deterministic, high-speed acquisition ideal for transient capture. Internally clocked modes support lower rates optimized for autonomous, low-overhead operation.
Does the MAX11632EEG+T require an external reference voltage?
No, the MAX11632EEG+T does not require an external reference voltage-it integrates a precision 4.096V internal reference with ±20 ppm/°C temperature coefficient. The REF pin serves as both output and bypass point (requires 0.1µF capacitor to GND). An external reference (1V to VDD) may be used instead, but doing so disables the internal reference and forfeits its stability benefits.
How many analog input channels does the MAX11632EEG+T support?
The MAX11632EEG+T supports 16 single-ended analog input channels: AIN0 through AIN14 plus CNVST/AIN15 configured as the 16th input. Channel selection is programmable via the setup register, and scan sequences can be defined to cycle through any subset-including all 16-in autonomous mode using the internal FIFO and clocking.
What package type is used for the MAX11632EEG+T?
The MAX11632EEG+T is supplied in a 24-pin QSOP (Quarter Size Outline Package) with 0.635mm lead pitch and dimensions of 5.0mm × 7.5mm. This RoHS-compliant, surface-mount package supports automated placement and reflow soldering, and provides adequate thermal dissipation for continuous operation at full sampling rate within the –40°C to +85°C industrial temperature range.
Can the MAX11632EEG+T operate with a 3.3V supply?
No, the MAX11632EEG+T is specified only for +4.75V to +5.25V supply operation. It is the MAX11633EEG+T variant that supports +2.7V to +3.6V operation with a 2.5V internal reference. Using the MAX11632EEG+T outside its rated supply range risks functional failure, parametric degradation, or permanent damage-always verify VDD compliance before system integration.
MAX11632EEG+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 24-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 300k
- Number of Inputs:
- 16
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 24-QSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11632EEG+T FAQ
1.How can I place an order for MAX11632EEG+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11632EEG+T 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 MAX11632EEG+T reliable?
The price and inventory of MAX11632EEG+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11632EEG+T is usually 5 days.
3.What payment methods are accepted for MAX11632EEG+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11632EEG+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11632EEG+T?
MAX11632EEG+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11632EEG+T 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 MAX11632EEG+T?
For technical support, including MAX11632EEG+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11632EEG+T requirements.
6.How does Aetrix verify that MAX11632EEG+T is sourced from the original manufacturer or authorized distributors?
All MAX11632EEG+T 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 MAX11632EEG+T meets industry standards.
7.What is the process for return or replacement of MAX11632EEG+T?
All MAX11632EEG+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX11632EEG+T, 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 MAX11632EEG+T part is unused and in its original packaging.
Return procedure for MAX11632EEG+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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