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Analog Devices Inc./Maxim Integrated MAX11620EEE+
- Part No.:
- MAX11620EEE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX11620EEE+.pdf
- Description:
- IC ADC 10BIT SAR 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,400
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Product details
Overview
MAX11620EEE+ from Maxim Integrated is a 10-bit, 300ksps serial analog-to-digital converter with internal 4.096V reference, 8-channel single-ended analog multiplexer, on-chip 16-entry FIFO, and SPI/QSPI/MICROWIRE-compatible 3-wire interface. It operates from 4.75V to 5.25V and supports scan mode, internal averaging, and AutoShutdown™ for low-power system supervision in industrial control and patient monitoring.
For engineers reviewing the MAX11620EEE+ datasheet, MAX11620EEE+ pinout, MAX11620EEE+ application, or MAX11620EEE+ equivalent, this page delivers verified electrical specs (±1 LSB INL/DNL), timing parameters (2.7µs conversion time), supply current (2.3mA at 300ksps), FIFO behavior, and real-world use cases - all confirmed for the exact MAX11620EEE+ variant in 16-pin QSOP.
Technical Context
The MAX11620EEE+ implements a successive-approximation register (SAR) architecture with integrated track-and-hold, supporting unipolar 0–VREF input range. Its internal oscillator enables autonomous conversions in clock modes 00/01/10, while clock mode 11 supports externally timed sampling up to 300ksps using SCLK ≤ 4.8MHz.
It features configurable CNVST/AIN7 pin operation, 16-deep FIFO buffering to decouple conversion from serial readout, and internal averaging across up to 16 samples per result. The device uses a 10-bit binary output format and supports both internal (4.096V) and external (1V to VDD) reference sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit SAR ADC: delivers 1024 discrete digital codes for precise voltage digitization. |
| Sampling Rate | 300ksps max (externally clocked): supports high-speed transient capture in data loggers and instrumentation. |
| INL / DNL | ±1 LSB over temperature: ensures monotonicity and no missing codes in closed-loop control systems. |
| Internal Reference | 4.096V ±0.7% (20ppm/°C TC): provides stable full-scale range without external precision reference. |
| FIFO Depth | 16 entries: buffers sequential conversions to reduce MCU polling overhead in multi-channel acquisition. |
| Supply Current | 2.3mA typical at 300ksps (5V): enables low-power operation in battery-backed industrial sensors. |
| Interface | 10MHz 3-wire SPI/QSPI/MICROWIRE: compatible with legacy microcontrollers without hardware redesign. |
| Operating Temp | -40°C to +85°C: qualified for deployment in harsh industrial and medical environments. |
Pinout & Package
MAX11620EEE+ is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.65mm pitch), RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4 | AIN0–AIN3 | Analog input channels 0–3: single-ended, unipolar inputs referenced to GND. |
| 5–7 | N.C. | No connection: not internally bonded; must be left floating or grounded per layout best practice. |
| 8 | CNVST/AIN7 | Active-low conversion start or analog input 7: dual-function pin controlled via setup register. |
| 9 | REF | Reference input: accepts internal 4.096V or external 1V–VDD reference; bypass with 0.1µF capacitor. |
| 10 | GND | Analog/digital ground: common return for reference, analog inputs, and digital I/O. |
| 11 | VDD | Power supply: 4.75V–5.25V; requires local 0.1µF ceramic bypass to GND. |
| 12 | CS | Active-low chip select: enables serial interface and controls DOUT three-state behavior. |
| 13 | SCLK | Serial clock input: 10MHz max; 40–60% duty cycle required for reliable data transfer. |
| 14 | DIN | Serial data input: latched on rising SCLK edge; used to write setup, conversion, and averaging registers. |
| 15 | DOUT | Serial data output: outputs MSB-first 16-bit result on falling SCLK edge; high-impedance when CS = high. |
| 16 | EOC | End-of-conversion flag: active-low pulse signals completion of conversion sequence per clock mode. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip 16-entry FIFO | Enables burst-mode acquisition without CPU intervention-critical for deterministic response in PLC I/O modules. |
| Configurable CNVST/AIN7 pin | Reduces pin count by combining conversion trigger and analog input functionality-saves PCB space in compact designs. |
| AutoShutdown™ mode | Reduces supply current to ≤5µA during idle periods-extends battery life in portable patient monitors. |
| Internal 4.096V reference | Eliminates need for external reference IC and associated calibration-lowers BOM cost and design complexity. |
| Scan mode with internal averaging | Automatically cycles through selected channels and computes averaged results-improves SNR in noisy industrial settings. |
| 10MHz SPI-compatible interface | Supports direct connection to legacy microcontrollers (e.g., STM32F1, PIC18) without level-shifting or protocol translation. |
Applications
| Industrial Process Monitoring | Patient Vital Sign Acquisition |
|---|---|
|
Use Scenario: Real-time monitoring of temperature, pressure, and flow sensor outputs in factory automation panels. IC Role / Device Role / Timing Role: 8-channel ADC digitizes analog sensor outputs with synchronized sampling and FIFO buffering for deterministic data streaming to ARM Cortex-M4 controller. Use Value: ±1 LSB INL ensures accurate PID loop feedback; 300ksps rate captures transients in motor current sensing. |
Use Scenario: Multi-parameter bedside monitor acquiring ECG, SpO₂, and respiration signals. IC Role / Device Role / Timing Role: Single-chip ADC handles simultaneous analog front-end digitization with internal averaging to suppress 50/60Hz interference. Use Value: 4.096V internal reference eliminates drift-induced calibration errors; AutoShutdown™ extends battery runtime between charges. |
| Data Logging in Harsh Environments | Test & Measurement Equipment |
|
Use Scenario: Ruggedized field logger recording environmental sensor data (vibration, humidity, voltage) in oil/gas infrastructure. IC Role / Device Role / Timing Role: ADC operates autonomously in scan mode with internal clock, storing 16 samples before host readout via SPI. Use Value: -40°C to +85°C rating ensures reliability in uncontrolled enclosures; 16-pin QSOP simplifies conformal coating and thermal management. |
Use Scenario: Benchtop multimeter or signal analyzer requiring calibrated DC voltage measurement. IC Role / Device Role / Timing Role: Precision ADC digitizes conditioned input with programmable gain stage, using internal reference as primary scaling source. Use Value: 20ppm/°C reference TC and ±1 LSB DNL enable <100ppm total measurement uncertainty over full temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit multichannel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7953IRHBT | 12-bit resolution, 1MSPS, 16-channel, SPI interface, but no internal reference or FIFO. | Requires external 2.5V reference and external FIFO or faster host processor for burst reads. | Choose for higher resolution and speed where reference/FIFO are implemented externally. |
| AD7476AARMZ | 12-bit, 1MSPS, single-channel, no multiplexer, no FIFO, internal reference only (2.5V). | Lacks channel scanning and buffering-requires external mux and timing control for multi-sensor systems. | Choose for single high-speed channel applications where simplicity and minimal footprint outweigh multi-channel needs. |
Compared with ADS7953IRHBT and AD7476AARMZ, the MAX11620EEE+ uniquely integrates 8-channel MUX, 4.096V reference, and 16-deep FIFO in a 16-pin QSOP-reducing component count and firmware complexity for embedded industrial data acquisition.
Availability
MAX11620EEE+ is available at Aetrix Electronics and suitable for industrial process monitoring, patient vital sign acquisition, and ruggedized data logging requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX11620EEE+ 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 demanding industrial, medical, and communications applications.
The MAX11618–MAX11625 family was engineered specifically for low-power, multichannel system supervision and data acquisition-emphasizing integration (FIFO, reference, MUX), ease of microcontroller interfacing, and robustness across -40°C to +85°C.
FAQ
What is the maximum sampling rate of the MAX11620EEE+?
The MAX11620EEE+ achieves a maximum sampling rate of 300ksps when using an external clock (SCLK ≤ 4.8MHz). In internally clocked modes, the effective rate depends on oscillator accuracy (±10%) and configuration but remains suitable for sub-100ksps continuous acquisition. This rate is confirmed in the Electrical Characteristics table under "Conversion Rate" for the MAX11620 variant with 4.75V–5.25V supply.
Does the MAX11620EEE+ include an internal voltage reference?
Yes, the MAX11620EEE+ includes a factory-trimmed 4.096V internal reference with ±0.7% initial accuracy and ±20ppm/°C temperature coefficient. This reference is enabled by default and eliminates the need for external reference components in most applications. The value is explicitly specified in the "INTERNAL REFERENCE" section of the datasheet for MAX11618/MAX11620/MAX11624 variants.
How many analog input channels does the MAX11620EEE+ support?
The MAX11620EEE+ supports 8 single-ended analog input channels (AIN0–AIN7), with AIN7 sharing the CNVST pin. This is confirmed in the General Description ("MAX11620/MAX11621 have 8 input channels") and Pin Description table, which lists pins 1–4 as AIN0–AIN3 and pin 8 as CNVST/AIN7 for the MAX11620 variant in 16-pin QSOP.
What package type is used for the MAX11620EEE+?
The MAX11620EEE+ is supplied in a 16-pin QSOP (Quad Small Outline Package) with 0.65mm lead pitch, RoHS-compliant and lead-free. This is documented in the Ordering Information table and Pin Configurations diagram, which shows the 16-pin layout for MAX11618–MAX11621 devices including MAX11620EEE+.
Can the MAX11620EEE+ operate with an external reference voltage?
Yes, the MAX11620EEE+ accepts an external reference voltage applied to the REF pin within the range of 1.0V to VDD (4.75V–5.25V). When using an external reference, the internal 4.096V reference is disabled. This capability is specified in the "EXTERNAL REFERENCE" subsection of the Electrical Characteristics, with input current and voltage range explicitly defined for MAX11618/MAX11620/MAX11624.
MAX11620EEE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 300k
- Number of Inputs:
- 8
- 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:
- 16-QSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11620EEE+ FAQ
1.How can I place an order for MAX11620EEE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11620EEE+ 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 MAX11620EEE+ reliable?
The price and inventory of MAX11620EEE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11620EEE+ is usually 5 days.
3.What payment methods are accepted for MAX11620EEE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11620EEE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11620EEE+?
MAX11620EEE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11620EEE+ 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 MAX11620EEE+?
For technical support, including MAX11620EEE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11620EEE+ requirements.
6.How does Aetrix verify that MAX11620EEE+ is sourced from the original manufacturer or authorized distributors?
All MAX11620EEE+ 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 MAX11620EEE+ meets industry standards.
7.What is the process for return or replacement of MAX11620EEE+?
All MAX11620EEE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11620EEE+, 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 MAX11620EEE+ part is unused and in its original packaging.
Return procedure for MAX11620EEE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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