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Analog Devices Inc./Maxim Integrated MAX1169CCUD+
- Part No.:
- MAX1169CCUD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX1169CCUD+.pdf
- Description:
- IC ADC 16BIT SAR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,389
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Product details
Overview
MAX1169CCUD+ from Maxim Integrated is a low-power, 16-bit successive-approximation analog-to-digital converter (ADC) with I²C-compatible 2-wire serial interface, internal 4MHz clock, and +4.096V reference. It operates from a single +4.75V to +5.25V analog supply, consumes 5mW at 58.6ksps, and supports unipolar conversion on a single analog input for precision measurement in space-constrained portable systems.
For engineers reviewing the MAX1169CCUD+ datasheet, MAX1169CCUD+ pinout, MAX1169CCUD+ application, or MAX1169CCUD+ equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives, and supply-chain support tailored for battery-powered instrumentation and remote sensing deployments.
Technical Context
The MAX1169CCUD+ implements SAR architecture with integrated track-and-hold (T/H), using its internal 4MHz oscillator to drive conversion timing. Acquisition occurs over two SCL cycles before conversion, with T/H switch resistance (800Ω) and input capacitance (35pF) defining source impedance limits (≤2kΩ at 1.7MHz SCL).
Its dual-supply design separates AVDD (+4.75V to +5.25V) and DVDD (+2.7V to +5.5V), enabling direct interfacing with low-voltage logic while maintaining analog noise isolation. AutoShutdown™ reduces analog supply current to <50µA at 1ksps by powering down the internal reference and conversion circuitry between samples.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output codes for high-fidelity signal digitization in precision monitoring applications. |
| Sampling Rate | 58.6ksps - enables real-time capture of signals up to ~33kHz full-linear bandwidth (SINAD > 81dB) without aliasing when properly filtered. |
| SINAD | 86–90dB - corresponds to effective resolution of ~14.7 bits, critical for accurate dynamic signal analysis in medical or test equipment. |
| INL (Max) | ±2 LSB - ensures monotonicity and linearity error ≤ ±0.003% of full scale, supporting calibration-free operation in system supervision. |
| Power @ 58.6ksps | 5.0mW total (IAVDD ≈ 1.8mA, IDVDD ≈ 400µA) - allows continuous high-speed sampling in solar-powered remote nodes with minimal thermal impact. |
| I²C Modes | Fast Mode (400kHz) and High-Speed Mode (1.7MHz) - supports flexible host MCU integration, with clock stretching during conversion to guarantee data integrity. |
| Reference | +4.096V internal (±35ppm/°C TC) or external 1V–VAVDD - provides stable scaling for ratiometric measurements and eliminates need for external reference ICs. |
Pinout & Package
MAX1169CCUD+ is housed in a 14-pin TSSOP package (3.0mm × 4.4mm, 0.65mm pitch), RoHS-compliant and lead-free, optimized for compact PCB layouts in handheld and embedded systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DGND (Pin 1) | Digital Ground Reference | Return path for digital I/O; must be isolated from AGND except at single-point star ground to prevent digital noise coupling into analog domain. |
| SCL (Pin 2) | Serial Clock Input | Master-generated clock controlling I²C timing; held low (stretched) during conversion to synchronize data readout after result is ready. |
| SDA (Pin 3) | Serial Data I/O | Bidirectional open-drain bus line requiring external pull-up; carries address, command, and 16-bit conversion result in MSB-first format. |
| ADD2–ADD0 (Pins 4–6) | Address Select Inputs | Program lower 3 bits of 7-bit slave address (011xxxx); combined with ADD3 (Pin 14), enable up to 16 devices on same I²C bus without address conflict. |
| DVDD (Pin 7) | Digital Supply Voltage | +2.7V to +5.5V logic supply; powers I²C interface and control logic-decoupled with 0.1µF capacitor to DGND for noise immunity. |
| AVDD (Pin 8) | Analog Supply Voltage | +4.75V to +5.25V analog rail; powers SAR core, T/H, and reference-requires separate 0.1µF bypass to AGND to preserve SNR. |
| AGND (Pin 9) | Analog Ground Reference | Low-noise return for analog circuitry; must be physically separated from DGND and connected only at clean system ground point. |
| AIN (Pin 10) | Analog Input | Single-ended unipolar input (0V to VREF); accepts up to 4MHz small-signal bandwidth but requires anti-alias filtering for Nyquist compliance. |
| AGNDS (Pin 11) | Analog Signal Ground | Negative reference for AIN; tied directly to AGND to define input common-mode level and minimize offset drift. |
| REFADJ (Pin 12) | Reference Buffer Control | Connect to AVDD to disable internal bandgap and use external reference; bypassed with 0.1µF to AGND to stabilize buffer output. |
| REF (Pin 13) | Reference Output/Input | Delivers +4.096V (internal) or accepts external 1V–VAVDD reference; bypassed with 10µF to AGND to suppress switching noise and ensure stable conversion gain. |
| ADD3 (Pin 14) | MSB Address Select | Programs bit 3 of slave address; together with ADD2–ADD0, sets unique I²C address (factory MSBs = 011) for multi-device bus configurations. |
Key Features
| Feature | Design Value |
|---|---|
| AutoShutdown™ between conversions | Reduces analog supply current to <50µA at 1ksps throughput-enables ultra-low-power wake-on-event sensing in battery-operated field instruments. |
| I²C Fast & High-Speed modes | Supports 400kHz (19ksps) and 1.7MHz (58.6ksps) data rates with clock stretching-eliminates need for custom SPI interface while preserving MCU resource efficiency. |
| Separate AVDD/DVDD supplies | Allows independent optimization: +5V analog rail for SNR integrity and +3.3V digital rail for modern low-voltage MCUs-reducing BOM count and layout complexity. |
| Internal 4MHz conversion clock | Removes external crystal or oscillator requirement-simplifies design, lowers cost, and improves reliability in vibration-prone or temperature-cycling environments. |
| Four address-select inputs (ADD0–ADD3) | Enables 16 unique I²C addresses on one bus-supports scalable sensor arrays in industrial monitoring or modular medical devices without address jumpers or firmware reconfiguration. |
Applications
| Hand-Held Portable Instruments | Medical Patient Monitoring |
|---|---|
Use Scenario: Battery-powered multimeter or environmental logger capturing voltage, temperature, or pressure with 16-bit resolution over 8+ hours. IC Role / Device Role / Timing Role: Primary ADC digitizing analog sensor outputs; uses AutoShutdown™ and internal reference to minimize active time and eliminate external components. Use Value: 5mW power at full rate and 0.23mW at 1ksps extend battery life; 14-pin TSSOP fits tight enclosures; I²C simplifies MCU integration. |
Use Scenario: Wearable ECG front-end acquiring biopotential signals with high SNR and low DC drift for arrhythmia detection. IC Role / Device Role / Timing Role: Precision analog input stage converting conditioned bio-signals; leverages 87–90dB SNR and ±2 LSB INL for diagnostic-grade fidelity. Use Value: Internal +4.096V reference enables ratiometric measurement against sensor excitation; 4MHz input bandwidth supports fast transient capture. |
| Battery-Powered Test Equipment | Solar-Powered Remote Sensors |
Use Scenario: Field-deployable insulation resistance tester or loop calibrator requiring stable gain accuracy across -40°C to +85°C. IC Role / Device Role / Timing Role: Core measurement engine performing unipolar conversion with internal reference; uses REFADJ pin to fine-tune reference voltage for calibration traceability. Use Value: ±0.5% FSR gain error and ±35ppm/°C reference TC ensure repeatable readings across temperature; 14-TSSOP eases automated assembly. |
Use Scenario: Wireless soil moisture node powered by small solar panel and supercapacitor, sampling every 10 minutes with burst transmission. IC Role / Device Role / Timing Role: Low-duty-cycle ADC activated only during measurement window; enters shutdown mode (<5µA) between samples to conserve energy. Use Value: 3µW shutdown current and programmable address allow long-term autonomy; I²C bus supports daisy-chained multi-node networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit I²C ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1115IDGSR | 16-bit, 860SPS max, PGA (2–16×), no internal reference, 10-bit register addressing | Better for low-frequency, high-gain sensor interfaces (e.g., strain gauges); lacks 58.6ksps speed and internal 4.096V reference. | Select when programmable gain and ultra-low power (<150nA shutdown) outweigh speed and reference integration needs. |
| AD7998BRUZ-0 | 12-bit, 180ksps, 8-channel, internal 2.048V reference, I²C-compatible | Higher channel count and speed, but lower resolution; internal reference is half the voltage of MAX1169CCUD+'s 4.096V. | Choose for multi-sensor systems needing >1 channel and >100ksps, accepting 12-bit resolution and different reference scaling. |
Compared with ADS1115IDGSR and AD7998BRUZ-0, MAX1169CCUD+ uniquely balances 16-bit resolution, 58.6ksps throughput, integrated 4.096V reference, and ultra-low active power-making it optimal for single-channel, medium-speed, battery-sensitive applications where reference stability and code density are critical.
Availability
MAX1169CCUD+ is available at Aetrix Electronics and suitable for hand-held portable instruments, medical patient monitoring, and solar-powered remote sensors requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX1169CCUD+ 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 MAX1169CCUD+ belongs to Maxim's high-accuracy, low-power SAR ADC product line-engineered specifically for portable and remote measurement systems where resolution, reference stability, and I²C simplicity are prioritized over channel count or ultra-high speed.
FAQ
What is the maximum sampling rate supported by the MAX1169CCUD+?
The MAX1169CCUD+ achieves a maximum sampling rate of 58.6ksps in I²C High-Speed Mode (1.7MHz SCL). This requires proper bus timing compliance-including minimum tLOW (320ns) and tHIGH (120ns)-and clock stretching support from the master controller. At 400kHz Fast Mode, the rate drops to 19ksps.
Does the MAX1169CCUD+ require an external clock source?
No, the MAX1169CCUD+ contains an internal 4MHz oscillator that drives the SAR conversion clock. External clocks are not needed or supported-the device relies entirely on its on-chip timing generator for conversion, simplifying layout and improving reliability in noisy environments.
Can the MAX1169CCUD+ operate with a 3.3V digital supply while using a 5V analog supply?
Yes, the MAX1169CCUD+ supports independent DVDD (+2.7V to +5.5V) and AVDD (+4.75V to +5.25V) rails. Using DVDD = 3.3V with AVDD = 5.0V is fully specified and commonly implemented to interface with 3.3V microcontrollers while preserving analog performance and SNR.
How does AutoShutdown™ reduce power consumption in the MAX1169CCUD+?
AutoShutdown™ powers down the internal reference and conversion circuitry between conversions. At 1ksps throughput, MAX1169CCUD+ draws less than 50µA from AVDD-dropping total power to 0.23mW. In full shutdown (R/W = 0, no conversion), analog supply current falls to 0.4–5µA, enabling multi-year battery life in intermittent-sampling applications.
What is the function of the REFADJ pin on the MAX1169CCUD+?
The REFADJ pin serves dual roles: (1) as the output of the internal reference buffer (bypassed with 0.1µF to AGND), and (2) as the enable/disable control for the internal bandgap. Pulling REFADJ to AVDD disables the internal reference, allowing use of an external 1V–VAVDD reference applied to the REF pin-providing flexibility for custom scaling or improved TC performance.
MAX1169CCUD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 58.6k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- I2C
- 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:
- 2.7V ~ 5.25V
- Features:
- Selectable Address
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 14-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1169CCUD+ FAQ
1.How can I place an order for MAX1169CCUD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1169CCUD+ 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 MAX1169CCUD+ reliable?
The price and inventory of MAX1169CCUD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1169CCUD+ is usually 5 days.
3.What payment methods are accepted for MAX1169CCUD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1169CCUD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1169CCUD+?
MAX1169CCUD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1169CCUD+ 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 MAX1169CCUD+?
For technical support, including MAX1169CCUD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1169CCUD+ requirements.
6.How does Aetrix verify that MAX1169CCUD+ is sourced from the original manufacturer or authorized distributors?
All MAX1169CCUD+ 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 MAX1169CCUD+ meets industry standards.
7.What is the process for return or replacement of MAX1169CCUD+?
All MAX1169CCUD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1169CCUD+, 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 MAX1169CCUD+ part is unused and in its original packaging.
Return procedure for MAX1169CCUD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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