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Analog Devices Inc./Maxim Integrated MAX1088ETA-T
- Part No.:
- MAX1088ETA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX1088ETA-T.pdf
- Description:
- 10-BIT, TRUE-DIFFERENTIAL ADC
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX1088ETA-T from Maxim Integrated is a 10-bit, true-differential successive-approximation ADC operating from a single +5V supply, delivering 150ksps sampling rate, ±1.0 LSB INL, and 61dB SINAD at 10kHz input. It features AutoShutdown (0.2µA), 1.4µs acquisition time, and SPI/QSPI/MICROWIRE-compatible 3-wire serial interface - optimized for low-power portable sensing systems requiring high noise immunity and compact size.
For engineers reviewing the MAX1088ETA-T datasheet, MAX1088ETA-T pinout, MAX1088ETA-T application, or MAX1088ETA-T equivalent, this page delivers verified electrical specs, validated differential input behavior, confirmed TDFN-EP package mapping, and real-world timing constraints for embedded data acquisition design.
Technical Context
The MAX1088ETA-T implements a SAR architecture with an integrated true-differential track-and-hold, supporting unipolar (0 to VREF) and bipolar (±VREF/2) input ranges via software-configurable CNVST sequencing. Its internal 4MHz oscillator (±10%) eliminates external clock dependency while enabling precise 3.7µs conversion time.
Input protection includes clamping diodes (GND −0.3V to VDD +0.3V), and analog inputs tolerate source impedances up to 300Ω without AC performance degradation. The REF pin accepts 1.0V to VDD+50mV, requiring a 0.1µF bypass capacitor for stable reference operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1024 discrete output codes for precision analog digitization |
| Sampling Rate | 150ksps - supports real-time monitoring of fast transients in battery-powered sensors |
| INL / DNL | ±1.0 LSB / ±1.0 LSB - ensures monotonicity and <0.1% full-scale linearity error across temperature |
| SINAD | 61dB at 10kHz - enables accurate measurement of low-amplitude signals in noisy environments |
| Supply Current | 200µA at 150ksps, 0.2µA in shutdown - extends battery life in intermittent-sampling applications |
| Input Range | True-differential: 0 to VREF (unipolar) or ±VREF/2 (bipolar) - rejects common-mode noise in sensor bridges |
| Interface | SPI/QSPI/MICROWIRE-compatible 3-wire serial - interoperates with legacy and modern microcontrollers without protocol translation |
Pinout & Package
MAX1088ETA-T is housed in an 8-pin TDFN-EP package (3mm × 3mm, 0.75mm height) with exposed pad for thermal and grounding enhancement. Pin numbering follows standard top-view orientation with EP connected to GND for optimal noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Positive supply input | +4.75V to +5.25V operation; requires local 0.1µF ceramic bypass to GND |
| AIN+ (Pin 2) | Differential positive analog input | Accepts signal up to VDD+50mV; paired with AIN− for CMRR-critical measurements |
| AIN− (Pin 3) | Differential negative analog input | Completes true-differential pair; both inputs must stay within GND−0.3V to VDD+50mV |
| GND (Pin 4) | Analog/digital ground reference | Common return for VDD, REF, and digital I/O; tie exposed pad to this node |
| REF (Pin 5) | External reference voltage input | Defines full-scale range (e.g., +4.096V); bypass with 0.1µF capacitor for <10ppm drift |
| CNVST (Pin 6) | Conversion start control | Rising edge powers up device; falling edge triggers hold/conversion; toggling selects unipolar/bipolar mode |
| DOUT (Pin 7) | Serial data output | MSB-first 12-bit stream (10 data + 2 sub-bits); high-impedance after full readout |
| SCLK (Pin 8) | Serial clock input | Accepts 0–8MHz clock; data valid on falling edge; rising edge clocks µP input |
Key Features
| Feature | Design Value |
|---|---|
| True-differential input architecture | Rejects common-mode noise up to 100kHz, critical for strain gauge and thermocouple front-ends |
| Software-selectable unipolar/bipolar mode | Single CNVST sequence configures input polarity - no external logic or resistor networks required |
| AutoShutdown between conversions | Reduces average current to <1µA at 1ksps, enabling multi-year battery life in wake-on-event systems |
| Internal conversion clock | Eliminates external crystal or oscillator, simplifying BOM and reducing PCB area by >20mm² |
| 8MHz max serial clock support | Enables full 12-bit readout in <1.5µs, minimizing µP active time and system power budget |
| TDFN-EP thermal package | 1454.5mW max power dissipation at +70°C ambient - supports continuous operation in sealed enclosures |
Applications
| Portable Temperature Monitors | Flowmeters |
|---|---|
Use Scenario: Battery-powered handheld thermistor or RTD readers measuring ambient or process temperature in HVAC field tools. IC Role / Device Role / Timing Role: True-differential ADC digitizes bridge outputs while rejecting EMI from nearby motors or switching supplies. Use Value: ±0.1°C accuracy over −40°C to +85°C enabled by <1LSB INL and 61dB SINAD at 10Hz–1kHz bandwidth. |
Use Scenario: Ultrasonic or magnetic flow sensors in industrial water/gas metering modules with limited board space. IC Role / Device Role / Timing Role: Digitizes differential pressure or velocity signals with high CMRR to suppress pipeline vibration noise. Use Value: 150ksps sampling captures transient flow events; 0.2µA shutdown current extends 10-year battery life. |
| Touch Screens | Low Power Data Acquisition |
Use Scenario: Resistive touch overlay controllers in medical tablets or ruggedized PDAs requiring low standby power. IC Role / Device Role / Timing Role: Reads X/Y electrode voltage differentials during stylus contact with auto-scaled reference. Use Value: Unipolar/bipolar mode selection via CNVST eliminates need for external op-amp level-shifting circuitry. |
Use Scenario: Wireless sensor nodes collecting vibration, humidity, or gas concentration in predictive maintenance gateways. IC Role / Device Role / Timing Role: Core ADC in ultra-low-power SoC subsystem, synchronized to wake-up timer for burst sampling. Use Value: 1.4µs acquisition time allows fast settling from high-Z sensor sources; 3.7µs conversion enables <10µs total active window. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar true-differential 10-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-pin SOIC package; 125ksps max rate; no AutoShutdown; requires external reference buffer | Lacks integrated shutdown and differential input flexibility; suited for fixed-rate wired systems | Select when board layout permits larger SOIC and system clocking is synchronous |
| AD7476ARTZ-REEL7 | Single-ended only; 1MSPS rate; 2.35–5.25V supply; no bipolar mode; 6-pin SOT23 | Higher speed but no true-differential capability; unsuitable for bridge-based sensors | Choose only for non-differential, high-throughput applications where size is secondary to speed |
Compared with ADS7822U and AD7476ARTZ-REEL7, the MAX1088ETA-T uniquely combines true-differential input, software-selectable polarity, sub-µA shutdown, and TDFN-EP packaging - making it the only option that meets simultaneous requirements for noise-immune sensing, battery longevity, and miniaturization.
Availability
MAX1088ETA-T is available at Aetrix Electronics and suitable for portable temperature monitors, flowmeters, and touch screen controllers requiring stable component supply across extended production lifecycles.
Supply support for MAX1088ETA-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 communications applications.
The MAX1086–MAX1089 family targets ultra-low-power, space-constrained data acquisition - delivering 10-bit resolution with true-differential inputs in sub-3mm² packages for next-generation portable instrumentation.
FAQ
What is the maximum sampling rate of the MAX1088ETA-T, and under what conditions is it guaranteed?
The MAX1088ETA-T achieves a guaranteed 150ksps sampling rate when operated at VDD = +4.75V to +5.25V, fSCLK ≤ 8MHz, and with proper 0.1µF REF bypassing. This rate is maintained across the full −40°C to +85°C temperature range and corresponds to a 3.7µs conversion time plus 1.4µs acquisition window - all documented in the Electrical Characteristics table of the MAX1088ETA-T datasheet.
Does the MAX1088ETA-T support true-differential input, and how is it configured?
Yes, the MAX1088ETA-T natively supports true-differential input via dedicated AIN+ (Pin 2) and AIN− (Pin 3) terminals. Configuration is achieved through CNVST pin sequencing: a single high pulse selects unipolar mode (0 to VREF), while a high–low–high pulse selects bipolar mode (±VREF/2). This behavior is explicitly defined in the "Selecting Unipolar or Bipolar Conversions" section of the MAX1088ETA-T datasheet.
What package type does the MAX1088ETA-T use, and what are its thermal characteristics?
The MAX1088ETA-T uses an 8-pin TDFN-EP package (3mm × 3mm, 0.75mm height) with exposed pad. Its thermal resistance is rated at 18.2mW/°C above +70°C ambient, yielding 1454.5mW maximum continuous power dissipation at TA = +70°C. The exposed pad must be soldered to a GND plane for optimal thermal and electrical performance - confirmed in the Absolute Maximum Ratings table of the MAX1088ETA-T datasheet.
Can the MAX1088ETA-T operate with a 3V supply, or is it strictly +5V-only?
The MAX1088ETA-T is specified exclusively for +4.75V to +5.25V operation, as stated in its Absolute Maximum Ratings and Electrical Characteristics tables. It belongs to the MAX1086/MAX1088 subgroup, distinct from the +2.7V to +3.6V MAX1087/MAX1089 variants. Attempting 3V operation will result in undefined behavior or failure to meet AC/DC specifications - per the MAX1088ETA-T datasheet's supply voltage section.
What is the purpose of the two sub-bits (S1, S0) in the MAX1088ETA-T's 12-bit serial output?
The MAX1088ETA-T outputs 12 bits per conversion: 10 data bits (B9–B0) followed by two sub-bits (S1, S0) that provide additional resolution information for interpolation or dithering. These sub-bits are not part of the primary 10-bit result but assist in improving effective resolution in oversampling applications - a feature documented in the "Output Data Format" section of the MAX1088ETA-T datasheet and verified in timing diagrams Figure 5a/5b.
MAX1088ETA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 150
- Number of Inputs:
- 1
- Input Type:
- Differential, 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:
- 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 4.75V ~ 5.25V
- Features:
- Internal Oscillator
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-TDFN-EP (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1088ETA-T FAQ
1.How can I place an order for MAX1088ETA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1088ETA-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 MAX1088ETA-T reliable?
The price and inventory of MAX1088ETA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1088ETA-T is usually 5 days.
3.What payment methods are accepted for MAX1088ETA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1088ETA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1088ETA-T?
MAX1088ETA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1088ETA-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 MAX1088ETA-T?
For technical support, including MAX1088ETA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1088ETA-T requirements.
6.How does Aetrix verify that MAX1088ETA-T is sourced from the original manufacturer or authorized distributors?
All MAX1088ETA-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 MAX1088ETA-T meets industry standards.
7.What is the process for return or replacement of MAX1088ETA-T?
All MAX1088ETA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1088ETA-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 MAX1088ETA-T part is unused and in its original packaging.
Return procedure for MAX1088ETA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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