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Analog Devices Inc./Maxim Integrated MAX11108AVB+
- Part No.:
- MAX11108AVB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-XFQFN
- Datasheet:
-
MAX11108AVB+.pdf
- Description:
- TINY 12-BIT, LOW POWER, 3MSPS, S
- Quantity:
- Payment:
- Shipping:
Inventory:162
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Product details
Overview
MAX11108AVB+ from Maxim Integrated is a 12-bit, single-ended, successive-approximation ADC with 3Msps throughput, 73dB SNR, and operation from 2.2V to 3.6V supply. It features a dedicated reference input (REF), separate digital I/O supply (OVDD), and ultra-compact 10-pin ultra-TQFN (2.1mm × 1.6mm) package. Designed for portable battery-powered data acquisition, it delivers high dynamic performance in space-constrained systems.
For engineers reviewing the MAX11108AVB+ datasheet, MAX11108AVB+ pinout, MAX11108AVB+ application, or MAX11108AVB+ equivalent, key selection considerations include its 3Msps conversion rate with no pipeline delay, 1.3μA power-down current, SPI/QSPI/MICROWIRE-compatible 3-wire serial interface, and -40°C to +125°C operating range - all critical for low-power, high-density embedded sensing designs.
Technical Context
The MAX11108AVB+ implements a SAR architecture with internal sample-and-hold, supporting full-scale analog input ranges from 0V to VREF (1V to VDD + 0.05V). Its acquisition time is 52ns and aperture jitter is 15ps, enabling accurate sampling of signals up to 40MHz full-power bandwidth.
It uses a 16-cycle serial frame (MSB-first, leading zero + 12-bit result + two trailing zeros) synchronized to SCLK (0.48–48MHz), with CS falling edge defining the sampling instant. Power management includes full power-down mode (1.3μA) and fast wake-up via dummy conversion (333ns at 48MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit straight-binary output; LSB = VREF/4096, enabling precise digitization of small signal variations. |
| Throughput Rate | 3Msps maximum; supports real-time sampling of fast transients without pipeline latency or dead time. |
| SNR | 73dB typical at fIN = 1MHz; ensures high-fidelity signal reconstruction in noise-sensitive applications like medical instrumentation. |
| Power Consumption | 6.6mW at 3Msps (VDD = 2.2V); scales linearly with sample rate down to 2.5μA/ksps for adaptive energy efficiency. |
| Input Range | 0V to VREF (1V to VDD + 0.05V); allows flexible scaling with external references or direct VDD referencing. |
| Operating Temperature | -40°C to +125°C; qualified for automotive under-hood, industrial control, and harsh-environment portable equipment. |
| Package | 10-pin ultra-TQFN (2.1mm × 1.6mm, 0.5mm pitch); enables PCB area reduction >50% vs. standard TQFN alternatives. |
Pinout & Package
MAX11108AVB+ is housed in a 10-pin ultra-TQFN package (2.1mm × 1.6mm, 0.5mm pitch) with exposed pad for thermal dissipation (θJA = 110.8°C/W). Pin 1 is AIN (analog input), and the package supports reflow soldering per JEDEC J-STD-020 (peak 260°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 AIN | Analog single-ended input | Accepts 0V to VREF differential swing; presents 20pF capacitance in track mode, requiring low-impedance drive (e.g., MAX4430 buffer). |
| 2,5,10 AGND | Analog ground reference | Must connect to solid ground plane; separates analog return path from digital noise sources to preserve SNR. |
| 3 REF | External reference voltage input | Defines full-scale range; supports 1V to VDD + 0.05V; leakage < ±1µA ensures stable reference loading. |
| 4 VDD | Analog and core supply | 2.2V–3.6V operation; bypass with 0.1µF + 10µF capacitors close to pin to suppress supply-induced distortion. |
| 6 CS | Active-low chip select | Falling edge initiates sampling; timing-controlled entry/exit from power-down mode (e.g., pull high after 2nd–10th SCLK edge). |
| 7 OVDD | Digital I/O supply | 1.5V–VDD range; decouples logic interface from analog supply, enabling mixed-voltage MCU interfacing (1.5V/1.8V/2.5V/3V). |
| 8 DOUT | Serial data output | 3-wire SPI-compatible; MSB-first, high-impedance after 16th SCLK edge; requires no external level-shifting logic. |
| 9 SCLK | Serial clock input | 0.48–48MHz operation; controls conversion timing and data output; 40–60% duty cycle required for reliable sampling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | 2.1mm × 1.6mm ultra-TQFN saves >50% board area vs. comparable 12-bit ADCs - critical for wearable and handheld devices. |
| No pipeline delay | 3Msps throughput achieved with pure SAR architecture; eliminates latency-induced phase errors in closed-loop control systems. |
| Variable I/O voltage | OVDD supports 1.5V–3.6V logic interface, enabling direct connection to low-voltage MCUs (e.g., ARM Cortex-M0+) without level shifters. |
| Low-power management | 1.3μA power-down current and 2.5μA/ksps scalable active current allow multi-year battery life in intermittent-sampling applications. |
| SPI/QSPI/MICROWIRE compatibility | Native 3-wire interface operates without external glue logic, reducing BOM count and layout complexity in resource-constrained designs. |
Applications
| Instrument Data Acquisition | Portable Medical Devices |
|---|---|
Use Scenario: High-precision voltage/current monitoring in handheld multimeters and sensor calibration tools. IC Role / Device Role / Timing Role: Primary analog front-end digitizer capturing DC and low-frequency AC signals with minimal offset drift over temperature. Use Value: ±1 LSB INL and ±0.3 LSB offset error ensure measurement repeatability across -40°C to +125°C without recalibration. |
Use Scenario: ECG/EEG signal conditioning in battery-powered patient monitors and diagnostic wearables. IC Role / Device Role / Timing Role: Low-noise, low-power ADC sampling biopotential signals at ≥1kSPS while preserving 73dB SNR for waveform fidelity. Use Value: 1.3μA power-down current extends battery runtime between patient measurements without sacrificing signal integrity. |
| Battery-Operated Systems | Communication System Monitoring |
Use Scenario: Voltage, temperature, and current telemetry in IoT edge nodes and remote sensors. IC Role / Device Role / Timing Role: Energy-efficient digitizer enabling adaptive sampling - active only during scheduled wake-ups to minimize average current draw. Use Value: 2.5μA/ksps scalable supply current allows microamp-level system sleep modes while retaining fast (<333ns) wake-up capability. |
Use Scenario: RF power amplifier bias monitoring and baseband signal digitization in small-cell radios and modem subsystems. IC Role / Device Role / Timing Role: High-speed auxiliary ADC capturing envelope tracking feedback or DC offset correction signals. Use Value: 40MHz full-power bandwidth and 15ps aperture jitter support accurate sampling of fast-varying RF control loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, serial, low-power ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7953IRGER | 12-bit, 1MSPS, 16-channel SAR ADC; larger 24-pin QFN (4mm × 4mm); higher 12.5mW power at max rate. | Multi-channel scanning required; less suitable for ultra-compact single-input designs. | Select when multiplexed multi-sensor inputs are needed; avoid if board space or single-channel simplicity is prioritized. |
| AD7476ARTZ-REEL7 | 12-bit, 1MSPS, 6-pin SOT-23; lower 3.5mW power but no dedicated REF pin or OVDD; 2.7–5.25V supply only. | Limited to simpler, lower-speed, single-supply systems without independent reference or I/O voltage control. | Choose for cost-sensitive, low-throughput applications where 3Msps and flexible voltage scaling are unnecessary. |
Compared with ADS7953IRGER and AD7476ARTZ-REEL7, MAX11108AVB+ uniquely combines 3Msps speed, 2.1mm × 1.6mm size, independent REF/OVDD supplies, and sub-μA power-down - making it optimal for space- and power-constrained portable instrumentation where single-channel performance is paramount.
Availability
MAX11108AVB+ is available at Aetrix Electronics and suitable for portable medical devices, battery-operated IoT sensors, and industrial data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX11108AVB+ 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) is a semiconductor company specializing in precision analog, mixed-signal, and high-reliability ICs for industrial, medical, and communications markets.
The MAX11108AVB+ belongs to Maxim's ultra-low-power, high-speed ADC product line, engineered specifically for battery-powered portable instrumentation demanding minimal size, high SNR, and robust operation across extreme temperatures.
FAQ
What is the maximum sample rate supported by the MAX11108AVB+?
The MAX11108AVB+ supports a maximum throughput rate of 3Msps, achieved using a 48MHz SCLK with 16-cycle serial framing. Conversion time is fixed at 260ns, and acquisition time is 52ns - enabling full-rate sampling without pipeline delay or dead time between conversions. This makes MAX11108AVB+ suitable for real-time signal capture in portable test equipment and sensor interfaces.
Does the MAX11108AVB+ require an external reference voltage?
Yes, the MAX11108AVB+ requires an external reference voltage applied to the REF pin, which defines the full-scale input range (0V to VREF). VREF can be set from 1V up to VDD + 0.05V, allowing flexibility with precision references like the MAX6126 or direct VDD use. The device does not include an internal reference, so MAX11108AVB+ operation depends on stable external reference sourcing.
What digital interface protocols is the MAX11108AVB+ compatible with?
The MAX11108AVB+ features a 3-wire serial interface fully compatible with SPI, QSPI, and MICROWIRE protocols. It uses CS (active-low chip select), SCLK (serial clock), and DOUT (data out) - requiring no external logic or level shifters. The interface operates with OVDD from 1.5V to VDD, supporting direct connection to 1.5V, 1.8V, 2.5V, or 3V microcontrollers - a key advantage of MAX11108AVB+ in mixed-voltage systems.
How does the power-down mode function in the MAX11108AVB+?
The MAX11108AVB+ enters power-down mode when CS is pulled high between the 2nd and 10th SCLK falling edges, reducing supply current to 1.3μA typical. Exiting requires one dummy conversion (CS low for ≥10 SCLK cycles), after which the next conversion yields valid data. This wake-up time is 333ns at 48MHz, making MAX11108AVB+ ideal for burst-mode sensing with microamp-level average power consumption.
What is the package type and thermal performance of the MAX11108AVB+?
The MAX11108AVB+ uses a 10-pin ultra-TQFN package measuring 2.1mm × 1.6mm with 0.5mm pitch and an exposed thermal pad. Its junction-to-ambient thermal resistance (θJA) is 110.8°C/W on a 4-layer JEDEC-standard board. This compact thermally enhanced package enables high-density layouts while maintaining operation from -40°C to +125°C - a critical specification confirmed for MAX11108AVB+ in automotive and industrial environments.
MAX11108AVB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-XFQFN
- Packaging:
- Strip
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 3M
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- 3-Wire Serial, Microwire, QSPI, SPI
- Configuration:
- 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:
- 1.5V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 10-UTQFN (1.6x2.1)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11108AVB+ FAQ
1.How can I place an order for MAX11108AVB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11108AVB+ 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 MAX11108AVB+ reliable?
The price and inventory of MAX11108AVB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11108AVB+ is usually 5 days.
3.What payment methods are accepted for MAX11108AVB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11108AVB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11108AVB+?
MAX11108AVB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11108AVB+ 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 MAX11108AVB+?
For technical support, including MAX11108AVB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11108AVB+ requirements.
6.How does Aetrix verify that MAX11108AVB+ is sourced from the original manufacturer or authorized distributors?
All MAX11108AVB+ 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 MAX11108AVB+ meets industry standards.
7.What is the process for return or replacement of MAX11108AVB+?
All MAX11108AVB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11108AVB+, 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 MAX11108AVB+ part is unused and in its original packaging.
Return procedure for MAX11108AVB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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