My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX11637EEE+T
- Part No.:
- MAX11637EEE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX11637EEE+T.pdf
- Description:
- IC ADC 12BIT SAR 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,934
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX11637EEE+T from Maxim Integrated is a 12-bit, 300ksps serial analog-to-digital converter with true differential track/hold, internal 2.5V reference, and 8 single-ended / 4 differential input channels. It operates from a +2.7V to +3.6V supply, features a 16-entry FIFO, internal averaging, and SPI/QSPI/MICROWIRE-compatible 3-wire interface - enabling high-accuracy voltage monitoring in compact industrial sensor nodes.
For engineers reviewing the MAX11637EEE+T datasheet, MAX11637EEE+T pinout, MAX11637EEE+T application, or MAX11637EEE+T equivalent, this page delivers verified specifications, validated pin functions, confirmed use cases in patient monitoring and data logging, and two rigorously cross-checked alternative ADCs with documented functional and supply-voltage differences.
Technical Context
The MAX11637EEE+T implements a fully differential successive-approximation register (SAR) architecture with on-chip track/hold supporting both unipolar (0 to VREF) and bipolar (±VREF/2) differential modes. Its internal 2.5V reference exhibits ±30ppm/°C drift and 200µVRMS noise, while acquisition time is 0.6µs (typical) with source impedances ≤300Ω.
It supports four clock modes via CKSEL bits: mode 01 enables CNVST-triggered per-channel conversion without serial bus contention; mode 11 uses external SCLK up to 4.8MHz for full 300ksps sampling. EOC asserts low upon conversion completion in modes 00/01/10, but remains high in mode 11.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit SAR - delivers 1 LSB INL/DNL accuracy over -40°C to +85°C, ensuring no missing codes in closed-loop control feedback paths. |
| Sampling Rate | 300ksps max (external clock) - supports undersampling of signals up to 1MHz bandwidth for transient capture in power quality analyzers. |
| Reference Voltage | Internal 2.50V ±0.02V - eliminates external reference component count and layout area; stable across 2.7V–3.6V VDD range. |
| Input Channels | 8 single-ended or 4 true differential - enables simultaneous monitoring of multiple sensors (e.g., thermocouples + RTDs) with common-mode noise rejection. |
| Interface | 10MHz 3-wire SPI/QSPI/MICROWIRE - compatible with ARM Cortex-M and RISC-V microcontrollers without level-shifting; CPOL/CPHA agnostic. |
| Power Consumption | 1.5mA typical at 300ksps (VDD = 3V, internal ref) - enables battery-powered data loggers with >1-year runtime using coin-cell sources. |
| Operating Temp | -40°C to +85°C - qualified for industrial automation and medical equipment deployed in non-climate-controlled environments. |
Pinout & Package
MAX11637EEE+T is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.635mm pitch), RoHS-compliant and lead(Pb)-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN5 | Analog Input (Single-Ended/Differential) | Primary analog inputs; AIN0–AIN5 available on MAX11637; configured as IN+ or IN− pairs (e.g., AIN0/AIN1) for true differential sampling. |
| REF-/AIN6 | Reference Negative / Analog Input 6 | Configurable terminal: when used as REF-, enables external differential reference; when used as AIN6, expands channel count to 8 SE / 4 diff. |
| CNVST/AIN7 | Conversion Start / Analog Input 7 | Active-low trigger for autonomous conversions (clock mode 01); alternatively serves as eighth single-ended input when not used for timing. |
| REF+ | Reference Positive Input | Accepts external reference up to VDD + 50mV; bypassed to GND with 0.1µF capacitor to suppress noise coupling into ADC core. |
| GND / VDD | Ground / Power Supply | Separate analog/digital ground not required; 0.1µF ceramic decoupling mandatory at VDD pin to maintain 71dB SINAD performance. |
| CS / SCLK / DIN / DOUT / EOC | Digital Control & Data Interface | Standard 3-wire SPI signals; EOC provides hardware handshake for interrupt-driven firmware; DOUT is three-state when CS = high. |
Key Features
| Feature | Design Value |
|---|---|
| True Differential Track/Hold | Rejects common-mode noise up to 100kHz in motor drive current sensing, preserving signal integrity without external instrumentation amplifiers. |
| 16-Entry FIFO Buffer | Stores up to 16 conversion results autonomously, freeing MCU resources during burst acquisition in vibration analysis systems. |
| Internal Clock Modes | Four selectable timing schemes (CKSEL[1:0]) enable flexible trade-offs between conversion autonomy (CNVST-triggered), bus efficiency (scan mode), and speed (external clock). |
| AutoShutdown™ | Reduces supply current to ≤5µA during idle periods - critical for energy harvesting applications where average power must stay below 10µW. |
| Unipolar/Bipolar Configuration | Runtime-selectable input ranges (0–2.5V or ±1.25V) via setup register, simplifying firmware support for both DC bias and AC-coupled sensor interfaces. |
Applications
| Industrial Process Monitoring | Patient Vital Sign Acquisition |
|---|---|
|
Use Scenario: Continuous monitoring of temperature, pressure, and flow sensors in PLC-based factory automation systems. IC Role / Device Role / Timing Role: Primary ADC for analog sensor front-end; performs synchronized multi-channel sampling using internal FIFO and scan mode. Use Value: 8-channel capability reduces component count vs. dual 4-channel ADCs; ±1 LSB INL ensures calibration stability over 10-year equipment lifetime. |
Use Scenario: Portable ECG and SpO₂ monitors requiring low-noise, battery-efficient signal digitization. IC Role / Device Role / Timing Role: Signal-chain ADC for biopotential amplifiers; uses true differential inputs to reject 50/60Hz mains interference. Use Value: 71dB SINAD at 30kHz and 200µVRMS reference noise meet IEC 60601-2-27 ECG accuracy requirements without post-processing. |
| Data Logging for Environmental Sensors | Power Quality Analysis |
|
Use Scenario: Solar micro-inverter and smart meter field units logging voltage, current, and temperature over extended periods. IC Role / Device Role / Timing Role: Low-power ADC managing periodic wake-up conversions; leverages AutoShutdown™ between samples. Use Value: 1.5mA active current at 300ksps and 5µA shutdown current extend lithium-thionyl chloride battery life to >5 years in remote deployments. |
Use Scenario: Capturing transient voltage sags, swells, and harmonics in industrial distribution panels. IC Role / Device Role / Timing Role: High-bandwidth ADC sampling at 300ksps using external clock; exploits 1MHz input bandwidth for undersampling. Use Value: 81dBc SFDR and 1MHz full-power bandwidth allow accurate harmonic analysis up to 50th order without anti-alias filter complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7957IRHBT | 12-bit, 1MSPS, 8-channel, 2.7–5.25V supply, no internal reference - requires external 2.5V ref; SPI interface only. | Better speed for high-throughput control loops; lacks FIFO and AutoShutdown™ - higher average power in intermittent logging. | Select when sampling rate >300ksps is mandatory and board space allows external reference; avoid if minimizing BOM count is critical. |
| AD7476ARTZ-REEL7 | 12-bit, 1MSPS, single-channel, 2.7–5.25V, internal reference - no multiplexer, FIFO, or differential T/H; SPI-only interface. | Suitable for point-measurement designs; cannot replace 8-channel functionality without adding external MUX and logic. | Use only for cost-sensitive single-sensor applications; not a functional substitute for MAX11637EEE+T's integrated channel management. |
Compared with ADS7957IRHBT and AD7476ARTZ-REEL7, the MAX11637EEE+T uniquely integrates FIFO buffering, differential track/hold, and AutoShutdown™ within an 8-channel architecture - reducing system-level complexity for battery-powered, multi-sensor industrial and medical devices.
Availability
MAX11637EEE+T is available at Aetrix Electronics and suitable for industrial process monitoring, portable patient monitoring, and environmental data logging requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX11637EEE+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 MAX11634–MAX11637 family targets low-power, multichannel data acquisition in space-constrained systems - emphasizing integrated references, FIFO buffers, and flexible clocking to simplify sensor interface design.
FAQ
What is the maximum sampling rate achievable with the MAX11637EEE+T?
The MAX11637EEE+T achieves a maximum sampling rate of 300ksps when using an externally supplied SCLK up to 4.8MHz in clock mode 11. This mode disables FIFO and averaging but enables full-speed acquisition for time-critical applications like power quality event capture. Internal clock modes limit rate to ~200ksps due to oscillator tolerance and timing overhead.
Does the MAX11637EEE+T require an external reference voltage?
No, the MAX11637EEE+T includes a factory-trimmed internal 2.50V reference with ±30ppm/°C temperature coefficient and 200µVRMS noise - sufficient for most industrial and medical measurements. An external reference can be applied via REF+ and REF- pins if tighter initial accuracy or lower noise is required, but doing so disables the internal reference and increases BOM count.
How many analog input channels does the MAX11637EEE+T support?
The MAX11637EEE+T supports 8 single-ended analog inputs (AIN0–AIN7) or 4 true differential input pairs (e.g., AIN0/AIN1, AIN2/AIN3). Pins REF-/AIN6 and CNVST/AIN7 are multifunctional: they serve as analog inputs when not configured as reference or conversion-start terminals - enabling full 8-channel utilization in single-ended mode.
What package type is used for the MAX11637EEE+T?
The MAX11637EEE+T is packaged in a 16-pin QSOP (Quarter-Size Outline Package) measuring 5.3mm × 10.2mm with 0.635mm lead pitch. It is RoHS-compliant and lead(Pb)-free, denoted by the '+' suffix in the part number. The package supports standard surface-mount reflow processes including lead-free soldering at 260°C peak temperature.
Can the MAX11637EEE+T perform bipolar differential measurements?
Yes, the MAX11637EEE+T supports bipolar differential input mode with a ±VREF/2 range (±1.25V when using the internal 2.5V reference). In this mode, output codes are delivered in two's complement format, enabling direct measurement of AC-coupled signals such as bridge transducer outputs or biopotentials without software sign extension or offset correction.
MAX11637EEE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-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:
- 4, 8
- Input Type:
- Differential, 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:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-QSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11637EEE+T FAQ
1.How can I place an order for MAX11637EEE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11637EEE+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 MAX11637EEE+T reliable?
The price and inventory of MAX11637EEE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11637EEE+T is usually 5 days.
3.What payment methods are accepted for MAX11637EEE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11637EEE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11637EEE+T?
MAX11637EEE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11637EEE+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 MAX11637EEE+T?
For technical support, including MAX11637EEE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11637EEE+T requirements.
6.How does Aetrix verify that MAX11637EEE+T is sourced from the original manufacturer or authorized distributors?
All MAX11637EEE+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 MAX11637EEE+T meets industry standards.
7.What is the process for return or replacement of MAX11637EEE+T?
All MAX11637EEE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX11637EEE+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 MAX11637EEE+T part is unused and in its original packaging.
Return procedure for MAX11637EEE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX11637EEE+T Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
