My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX11664AUB+T
- Part No.:
- MAX11664AUB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MAX11664AUB+T.pdf
- Description:
- IC ADC 10BIT SAR 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,706
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX11664AUB+T from Maxim Integrated is a 10-bit, dual-channel, single-ended successive approximation ADC with 500ksps throughput, 2.2V–3.6V supply operation, and external reference input. It features 73dB SNR (typ), 1.3µA power-down current, and SPI/QSPI/MICROWIRE-compatible 3-wire serial interface-designed for portable data logging and battery-powered medical instrumentation.
For engineers reviewing the MAX11664AUB+T datasheet, MAX11664AUB+T pinout, MAX11664AUB+T application, or MAX11664AUB+T equivalent, key selection criteria include dual-channel 10-bit resolution at 500ksps, external VREF support, low 3.3mW active power, -40°C to +125°C operation, and 10-pin µMAX (FMAX-EP) package compatibility with space-constrained embedded systems.
Technical Context
The MAX11664AUB+T implements a successive approximation register (SAR) architecture with integrated sample-and-hold, supporting simultaneous dual analog inputs via an internal 2:1 MUX. Its conversion timing includes 52ns acquisition time, 4ns aperture delay, and 15ps aperture jitter-enabling accurate sampling of signals up to 40MHz full-power bandwidth.
It uses a dedicated OVDD pin (1.5V–3.6V) for digital I/O level shifting, allowing direct interfacing with 1.5V/1.8V/2.5V/3.0V logic without level translators. The REF pin accepts an external reference from 1V to (VDD + 0.05V), while AGND and GND are separately routed to minimize noise coupling in mixed-signal layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10 bits - delivers 1024 discrete output codes with ±0.5 LSB INL and ±0.5 LSB DNL over temperature. |
| Throughput Rate | 500 ksps - supports real-time sampling of signals up to 250kHz Nyquist frequency with no pipeline latency. |
| SNR | 61.6 dB (typ) - enables ≥9.9 effective number of bits (ENOB) for precision sensor signal digitization. |
| Power Consumption | 3.3 mW at 3V - achieves 8µA/ksps efficiency, critical for multi-day battery operation in portable devices. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive, industrial control, and medical-grade environments. |
| Reference Input | External REF pin (1V to VDD + 0.05V) - allows stable ratiometric or absolute measurement using precision external references. |
| Package | 10-pin µMAX (FMAX-EP) - 3mm × 5mm footprint with exposed pad grounded for thermal and noise performance. |
Pinout & Package
MAX11664AUB+T is housed in a 10-pin µMAX (FMAX-EP) package with exposed thermal pad requiring connection to PCB ground plane. Pin 1 is AIN1; pin 10 is VDD. The exposed pad (EP) must be soldered to a solid GND copper area for proper thermal dissipation and noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - AIN1 | Analog Input Channel 1 | Single-ended input referenced to AGND; 0V to VREF range; 20pF track capacitance. |
| 2 - AIN2 | Analog Input Channel 2 | Second single-ended input; shares same reference and sampling path as AIN1 via internal 2:1 MUX. |
| 3 - OVDD | Digital I/O Supply | Independent 1.5V–3.6V supply for SCLK/CS/DOUT/CHSEL-enables voltage-level translation without external circuitry. |
| 4 - AGND | Analog Ground | Separate ground return for analog section; must be connected to system AGND with low-impedance path. |
| 5 - CS | Chip Select | Active-low command that initiates conversion and enables DOUT; requires ≥10ns pulse width. |
| 6 - SCLK | Serial Clock | Input clock (0.08–8MHz); falling edge clocks out conversion result on DOUT; 40–60% duty cycle required. |
| 7 - CHSEL | Channel Select | Controls MUX to select AIN1 (low) or AIN2 (high); sampled on CS falling edge before conversion start. |
| 8 - REF | External Reference Input | Accepts precision reference voltage (1V to VDD + 0.05V); leakage <1pA enables high-impedance source use. |
| 9 - DOUT | Serial Data Output | 3-wire SPI-compatible output; tri-state when CS high; 15ns access time after SCLK falling edge. |
| 10 - VDD | Analog/Digital Core Supply | Main 2.2V–3.6V supply powering SAR core, sample-and-hold, and internal logic; decoupling required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | SAR architecture delivers first valid conversion result within one clock cycle after CS assertion-no latency buffer required. |
| Dual single-ended inputs | Internal 2:1 MUX with channel-select pin (CHSEL) enables rapid switching between two sensors without external multiplexing hardware. |
| Variable I/O voltage | OVDD pin supports 1.5V–3.6V logic levels-eliminates need for level shifters when interfacing with ultra-low-voltage microcontrollers. |
| Low-noise analog front-end | 73dB SNR and -90dB crosstalk ensure accurate concurrent sampling of two analog signals without mutual interference. |
| Ultra-low power-down mode | 1.3µA shutdown current extends battery life in sleep-wake architectures; wake-up occurs within one conversion cycle. |
Applications
| Portable Data Logging | Medical Instrumentation |
|---|---|
Use Scenario: Battery-powered environmental sensor node recording temperature, humidity, and pressure every 10ms. IC Role / Device Role / Timing Role: Dual-channel ADC digitizing two sensor outputs simultaneously with 500ksps throughput and external reference for ratiometric accuracy. Use Value: 3.3mW active power and 1.3µA shutdown current enable >1-year operation on a single CR2032 cell. |
Use Scenario: Handheld ECG monitor acquiring lead-I and lead-II signals with clinical-grade linearity. IC Role / Device Role / Timing Role: 10-bit SAR ADC providing 61.6dB SNR and ±0.5 LSB INL across -40°C to +125°C for diagnostic signal fidelity. Use Value: External REF input supports precision voltage reference ICs (e.g., MAX6126) to meet IEC 60601-2-27 accuracy requirements. |
| Battery-Operated Systems | Automotive Systems |
Use Scenario: Wireless IoT node measuring battery voltage and load current in smart metering applications. IC Role / Device Role / Timing Role: Dual-input ADC with independent OVDD pin interfaces directly with 1.8V MCU while powered from 3.3V rail. Use Value: No level-shifter components reduce BOM cost and PCB area; 10-pin µMAX fits tight 3mm × 5mm layout constraints. |
Use Scenario: Engine control unit monitoring dual oxygen sensor outputs in exhaust aftertreatment systems. IC Role / Device Role / Timing Role: High-temp ADC operating at +125°C with 40MHz full-power bandwidth for transient gas concentration analysis. Use Value: -40°C to +125°C qualification and 0.7 LSB/V line rejection ensure stable readings despite 12V rail ripple and thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, low-power ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7953IRHBT | 12-bit, 1MSPS, SPI interface, 2.7–5.25V supply, no OVDD pin, internal reference only. | Higher resolution and speed but lacks variable I/O voltage and external reference flexibility. | Select when higher ENOB (>11.5 bits) and faster sampling are prioritized over ultra-low power and mixed-voltage interfacing. |
| AD7476AARMZ | 12-bit, single-channel, 1MSPS, 2.7–5.25V supply, no MUX, no OVDD, internal reference only. | Lacks dual-input capability and external reference support; requires external MUX for two-sensor systems. | Choose for single-sensor applications where 12-bit resolution outweighs channel count and interface flexibility needs. |
Compared with ADS7953IRHBT and AD7476AARMZ, MAX11664AUB+T uniquely combines dual-channel operation, external reference input, and independent OVDD for mixed-voltage system integration-making it optimal for compact, battery-sensitive designs requiring flexible analog front-end configuration.
Availability
MAX11664AUB+T is available at Aetrix Electronics and suitable for portable data logging, medical instrumentation, and battery-operated systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX11664AUB+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, mixed-signal, and power management ICs for demanding industrial, medical, and automotive applications.
The MAX11661–MAX11666 family was engineered to deliver high-speed, low-power, multi-channel SAR ADC performance in miniature packages-targeting space- and energy-constrained embedded sensing systems.
FAQ
What is the maximum sample rate of the MAX11664AUB+T?
The MAX11664AUB+T achieves a maximum throughput rate of 500 ksps, with a fixed 1.56 µs conversion time and 52 ns acquisition period. This rate is maintained across the full -40°C to +125°C temperature range and 2.2V–3.6V supply voltage, enabling reliable real-time sampling of signals up to 250 kHz without pipeline delay or latency buffering.
Does the MAX11664AUB+T support external voltage reference?
Yes, the MAX11664AUB+T includes a dedicated REF pin that accepts an external reference voltage from 1.0 V to (VDD + 0.05 V). This allows precise ratiometric or absolute measurements using high-stability references like the MAX6126, improving system accuracy beyond what internal reference-based ADCs can achieve.
What is the function of the OVDD pin on the MAX11664AUB+T?
The OVDD pin supplies power to the digital I/O circuitry (SCLK, CS, CHSEL, DOUT) independently from the analog VDD rail. It accepts 1.5 V to 3.6 V, enabling direct interface with 1.5 V, 1.8 V, 2.5 V, or 3.0 V logic families-eliminating the need for external level shifters in mixed-voltage systems.
How does the MAX11664AUB+T handle dual analog inputs?
The MAX11664AUB+T integrates a 2:1 analog multiplexer controlled by the CHSEL pin to select between AIN1 and AIN2. Conversion is initiated on the CS falling edge, and the selected channel is sampled during the subsequent acquisition phase. Crosstalk between channels is specified at -90 dB, ensuring minimal interference during concurrent signal monitoring.
What package type is used for the MAX11664AUB+T?
The MAX11664AUB+T is packaged in a 10-pin µMAX (FMAX-EP) package measuring 3 mm × 5 mm with an exposed thermal pad. The EP must be soldered to a PCB ground plane to ensure proper thermal performance and low-noise operation-failure to connect EP to GND prevents device functionality per datasheet specification.
MAX11664AUB+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 500k
- Number of Inputs:
- 2
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.2V ~ 3.6V
- Voltage - Supply, Digital:
- 2.2V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 10-uMAX-EP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11664AUB+T FAQ
1.How can I place an order for MAX11664AUB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11664AUB+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 MAX11664AUB+T reliable?
The price and inventory of MAX11664AUB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11664AUB+T is usually 5 days.
3.What payment methods are accepted for MAX11664AUB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11664AUB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11664AUB+T?
MAX11664AUB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11664AUB+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 MAX11664AUB+T?
For technical support, including MAX11664AUB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11664AUB+T requirements.
6.How does Aetrix verify that MAX11664AUB+T is sourced from the original manufacturer or authorized distributors?
All MAX11664AUB+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 MAX11664AUB+T meets industry standards.
7.What is the process for return or replacement of MAX11664AUB+T?
All MAX11664AUB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX11664AUB+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 MAX11664AUB+T part is unused and in its original packaging.
Return procedure for MAX11664AUB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX11664AUB+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…
