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Analog Devices Inc./Maxim Integrated MAX11102ATB+T
- Part No.:
- MAX11102ATB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX11102ATB+T.pdf
- Description:
- IC ADC 12BIT SAR 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,488
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Product details
Overview
MAX11102ATB+T from Maxim Integrated is a 12-bit, dual-channel, single-ended successive approximation ADC with 2Msps throughput, 73dB SNR, and operation from 2.2V–3.6V supply. It features an external reference input, 3-wire SPI-compatible serial interface, and 10-pin 3mm×3mm TDFN-EP package - designed for high-precision, low-power data acquisition in portable medical and battery-operated systems.
For engineers reviewing the MAX11102ATB+T datasheet, MAX11102ATB+T pinout, MAX11102ATB+T application, or MAX11102ATB+T equivalent, key selection criteria include its dual analog input architecture, 2Msps no-pipeline-delay conversion, 1.3µA power-down current, variable I/O voltage support (1.5V–3.6V), and guaranteed -40°C to +125°C operation.
Technical Context
The MAX11102ATB+T implements a successive approximation register (SAR) architecture with integrated sample-and-hold, enabling pipeline-free deterministic latency. Its dual 2:1 MUX selects between AIN1 and AIN2, feeding a shared ADC core with channel-to-channel offset matching of ±0.4 LSB and gain matching of ±0.05 LSB.
It uses a high-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols without level-shifting logic. The dedicated VOVDD pin allows independent digital I/O supply (1.5V–3.6V), while REF accepts an external reference (1V to VDD+0.05V) - distinguishing it from internal-reference variants like MAX11110.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for high-fidelity signal digitization in sensor and instrumentation applications. |
| Throughput Rate | 2Msps - supports real-time sampling of signals up to 1MHz Nyquist bandwidth with no pipeline delay. |
| SNR | 73dB typical - enables >11.8 effective number of bits (ENOB) at 500kHz input, critical for precision medical waveform capture. |
| Power Consumption | 3.7mW at 2Msps - achieves 1.85µW per sample, optimizing battery life in portable data loggers. |
| Supply Voltage | 2.2V to 3.6V - compatible with single-cell Li-ion and regulated 3.3V/2.5V rails without external regulators. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial edge-sensing environments. |
| Power-Down Current | 1.3µA - enables ultra-low standby power during idle intervals in duty-cycled measurement systems. |
Pinout & Package
MAX11102ATB+T is housed in a 10-pin, 3mm × 3mm TDFN-EP package with exposed pad for thermal enhancement and grounding. Pin numbering follows standard TDFN layout (pin 1 marked by dot).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AIN1) | Analog Input Channel 1 | Single-ended input referenced to AGND; full-scale range = 0V to VREF or VDD. |
| 2 (AIN2) | Analog Input Channel 2 | Second single-ended input; shares ADC core via internal 2:1 MUX with AIN1. |
| 3 (REF) | External Reference Input | Accepts 1V–(VDD+0.05V); enables precise scaling and ratiometric measurements. |
| 4 (AGND) | Analog Ground | Separate ground return for analog circuitry; must be tied to system AGND with low-impedance path. |
| 5 (VDD) | Analog/Digital Core Supply | Primary 2.2V–3.6V supply powering ADC core, reference buffer, and internal logic. |
| 6 (DOUT) | Serial Data Output | 3-wire SPI-compatible output; tri-state capable; timing-critical for high-speed readout. |
| 7 (SCLK) | Serial Clock Input | Accepts up to 32MHz clock; defines conversion timing and data transfer rate. |
| 8 (CS) | Chip Select Input | Active-low enable; falling edge initiates conversion; controls DOUT high-impedance state. |
| 9 (CHSEL) | Channel Select Input | Controls internal MUX: logic high selects AIN2, low selects AIN1. |
| 10 (OVDD) | Digital I/O Supply | Independent 1.5V–3.6V supply for SCLK, CS, CHSEL, and DOUT - enables mixed-voltage interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True SAR architecture ensures deterministic 391ns conversion time and immediate data availability - essential for closed-loop control timing. |
| Variable I/O voltage (1.5V–3.6V) | OVDD pin allows direct connection to 1.5V, 1.8V, 2.5V, or 3.0V digital controllers without level shifters - reducing BOM count and board space. |
| Low-noise 73dB SNR | Optimized analog front-end achieves 73dB SNR at 500kHz input, supporting >11.8 ENOB for high-resolution biosignal acquisition. |
| External reference input | REF pin supports precision external references (e.g., MAX6126) for improved accuracy and temperature stability over internal VDD-based references. |
| 1.3µA power-down mode | Ultra-low quiescent current extends battery runtime in intermittent-sampling applications such as wireless sensor nodes. |
Applications
| Portable ECG Monitoring | Battery-Powered Data Logger |
|---|---|
|
Use Scenario: Continuous 12-bit sampling of differential ECG leads at 2ksps–10ksps with on-device filtering and storage. IC Role / Device Role / Timing Role: Dual-channel ADC digitizes amplified lead signals (AIN1/AIN2), synchronized via external crystal-controlled SCLK for jitter-free timing. Use Value: 73dB SNR preserves ST-segment morphology; 2.2V–3.6V operation matches Li-ion discharge curve; 1.3µA shutdown minimizes standby drain. |
Use Scenario: Multi-sensor environmental logging (temperature, humidity, pressure) in remote field deployments with 5-year battery life. IC Role / Device Role / Timing Role: Central ADC interfaces to multiple sensors via multiplexer; triggered by microcontroller's low-power timer interrupt. Use Value: 3.7mW active power and 1.3µA shutdown enable µW-level average consumption; -40°C to +125°C rating ensures reliability in uncontrolled enclosures. |
| Automotive Cabin Air Quality Sensor | Industrial Motor Current Sensing |
|
Use Scenario: Real-time CO₂ and VOC detection using NDIR and electrochemical sensors requiring stable, low-drift analog digitization. IC Role / Device Role / Timing Role: ADC converts conditioned sensor outputs; external REF decouples measurement accuracy from noisy 12V rail regulation. Use Value: ±0.4 LSB channel-to-channel offset matching ensures consistent multi-gas calibration; 125°C rating supports under-dash mounting. |
Use Scenario: Isolated shunt-based current monitoring in motor drives, capturing transient overcurrent events at ≥1Msps. IC Role / Device Role / Timing Role: High-speed dual-input ADC samples both phase current and bus voltage simultaneously for real-time torque calculation. Use Value: 2Msps throughput captures 500kHz harmonics; 4ns aperture delay and 15ps jitter preserve timing fidelity for vector control algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, low-power SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX11103ATB+ | Same 12-bit dual-channel architecture but rated for 3Msps (vs. 2Msps); higher 5.2mW power at full speed; identical pinout and package. | Preferred where >1MHz signal bandwidth or faster control loop sampling is required - e.g., servo position feedback. | Select MAX11103ATB+ only if 3Msps throughput is mandatory; otherwise MAX11102ATB+T offers better power efficiency at ≤2Msps. |
| ADS7953IRHBT | 12-bit, 8-channel SAR ADC (TI); 1Msps max; SPI interface; 3.3V-only I/O; no separate OVDD; larger 32-pin QFN package. | Suitable for multi-sensor systems needing >2 inputs without external MUX; lacks variable I/O voltage and ultra-low shutdown current. | Choose ADS7953IRHBT when expanding channel count beyond two; avoid if board space, power budget, or mixed-voltage interfacing are constraints. |
Compared with MAX11103ATB+, the MAX11102ATB+T trades 1Msps speed for 30% lower active power and identical thermal footprint; versus ADS7953IRHBT, it offers superior power efficiency, smaller size, and flexible I/O voltage - at the cost of channel count.
Availability
MAX11102ATB+T is available at Aetrix Electronics and suitable for portable medical instrumentation, battery-powered data loggers, and automotive cabin sensing applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX11102ATB+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 MAX111xx family targets ultra-low-power, high-speed data acquisition in space-constrained, battery-sensitive systems - emphasizing minimal active/shutdown power, wide temperature operation, and robust serial interface compatibility.
FAQ
What is the maximum serial clock frequency supported by the MAX11102ATB+T?
The MAX11102ATB+T supports a maximum SCLK frequency of 32MHz under specified conditions (VDD = 2.2V–3.6V, TA = –40°C to +125°C). This enables full 12-bit readout within the 2Msps conversion cycle, with timing parameters including t4 = 15ns data access time and t7 = 5ns hold time after SCLK falling edge - all verified across temperature and voltage ranges.
Does the MAX11102ATB+T require an external reference voltage?
Yes, the MAX11102ATB+T requires an external reference voltage applied to the REF pin. It accepts 1V to VDD+0.05V and does not generate an internal reference - unlike single-channel variants such as MAX11110. This design enables ratiometric accuracy and improved stability when paired with precision references like the MAX6126 series.
Can the MAX11102ATB+T interface directly with a 1.8V microcontroller?
Yes, the MAX11102ATB+T can interface directly with a 1.8V microcontroller via its dedicated OVDD pin, which accepts 1.5V–3.6V. When OVDD = 1.8V, digital inputs (CS, SCLK, CHSEL) recognize VIH ≥ 1.35V and VIL ≤ 0.45V, while DOUT drives VOH ≥ 1.53V and VOL ≤ 0.27V - eliminating need for external level shifters.
What is the aperture jitter specification for the MAX11102ATB+T, and why does it matter?
The MAX11102ATB+T has a guaranteed aperture jitter of 15ps (typical), measured from the CS falling edge. This low jitter preserves signal integrity at high input frequencies - for example, limiting SNR degradation to <0.1dB at 500kHz - making it suitable for high-fidelity waveform capture in portable diagnostic equipment where timing uncertainty directly impacts measurement fidelity.
How does the power-down mode function in the MAX11102ATB+T?
The MAX11102ATB+T enters power-down mode when CS remains high for more than one conversion cycle, reducing supply current to 1.3µA (typical). In this state, the reference buffer and ADC core are disabled, but the digital interface remains responsive to CS assertion - enabling wake-up and first conversion within one clock cycle, critical for event-triggered sampling in energy-harvesting systems.
MAX11102ATB+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 2M
- 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-TDFN (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11102ATB+T FAQ
1.How can I place an order for MAX11102ATB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11102ATB+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 MAX11102ATB+T reliable?
The price and inventory of MAX11102ATB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11102ATB+T is usually 5 days.
3.What payment methods are accepted for MAX11102ATB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11102ATB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11102ATB+T?
MAX11102ATB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11102ATB+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 MAX11102ATB+T?
For technical support, including MAX11102ATB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11102ATB+T requirements.
6.How does Aetrix verify that MAX11102ATB+T is sourced from the original manufacturer or authorized distributors?
All MAX11102ATB+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 MAX11102ATB+T meets industry standards.
7.What is the process for return or replacement of MAX11102ATB+T?
All MAX11102ATB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX11102ATB+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 MAX11102ATB+T part is unused and in its original packaging.
Return procedure for MAX11102ATB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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