My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1108EUB+T
- Part No.:
- MAX1108EUB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX1108EUB+T.pdf
- Description:
- IC ADC 8BIT SAR 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,571
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX1108EUB+T from Maxim Integrated is a low-power, 8-bit, dual-channel successive-approximation analog-to-digital converter (ADC) with integrated track/hold, internal +2.048V reference, SPI/QSPI/MICROWIRE-compatible 4-wire serial interface, and software-configurable unipolar/bipolar input modes. It operates from +2.7V to +3.6V, draws only 105µA at 50ksps, and supports battery monitoring in portable data loggers and hand-held measurement devices.
For engineers reviewing the MAX1108EUB+T datasheet, MAX1108EUB+T pinout, MAX1108EUB+T application, or MAX1108EUB+T equivalent, this page delivers verified electrical specs (INL ±0.2 LSB, SINAD 49dB, tCONV 20µs), µMAX package footprint, VDD monitoring capability, and confirmed alternatives for low-voltage, space-constrained ADC selection.
Technical Context
The MAX1108EUB+T implements a charge-redistribution SAR architecture with an on-chip track/hold amplifier and auto-zero rail referenced to VDD/2. Its conversion process uses a 18pF capacitive DAC and is fully controlled via an 8-bit software-configurable control byte transmitted over the serial interface.
All operating modes-including internal/external reference selection, external/internal clock mode, unipolar/pseudo-differential/bipolar input configuration, and power-down activation-are determined by bits SEL2–SEL0, I/EREF, and I/ECLK in the control byte. Acquisition time (tACQ = 1µs) and conversion time (tCONV = 20µs at 500kHz SCLK) are directly governed by the external serial clock frequency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit SAR-provides 256 discrete output codes with no missing codes over temperature. |
| Sampling Rate | Up to 50ksps-supports real-time signal capture in portable instrumentation without external timing circuitry. |
| INL | ±0.2 LSB (typ)-ensures monotonicity and linearity critical for precision sensor interfacing and system diagnostics. |
| SINAD | 49dB at 10kHz-enables accurate digitization of medium-bandwidth analog signals such as battery voltage or thermistor outputs. |
| Supply Current | 105µA at 3V/50ksps-minimizes battery drain in solar-powered remote systems and 4–20mA loop-powered devices. |
| Power-Down Current | 0.5µA-allows deep sleep between measurements to extend operational lifetime in energy-harvesting applications. |
| Reference Voltage | +2.048V internal-sets full-scale range for unipolar mode (0 to +2.048V) or bipolar mode (±1.024V), eliminating need for external reference IC. |
Pinout & Package
MAX1108EUB+T is housed in a 10-pin µMAX package (3mm × 3mm, 0.5mm pitch), occupying only 20% of an 8-pin plastic DIP footprint-optimized for ultra-compact PCB layouts in handheld medical instruments and remote sensors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Positive supply input | Accepts +2.7V to +3.6V; powers internal reference, T/H, and logic; PSR ±0.4mV over supply range. |
| CH0 (Pin 2) | Analog input channel 0 | Sampled input (SI) in single-ended or pseudo-differential mode; common-mode range = 0 to VDD. |
| CH1 (Pin 3) | Analog input channel 1 | Second independent analog input; shares same configuration and timing as CH0 via software control. |
| GND (Pin 4) | Analog/digital ground | Single ground reference for all analog and digital circuitry; requires low-impedance connection to minimize noise. |
| REF (Pin 5) | Reference voltage terminal | Outputs +2.048V internal reference or accepts external 1V to VDD reference; bypass with 1µF capacitor to GND. |
| COM (Pin 6) | Common reference input | Sets zero-code point in single-ended mode; must remain stable to ±0.5LSB during conversion. |
| CS (Pin 7) | Active-low chip select | Enables serial communication; DOUT enters high-impedance state when CS is high. |
| DIN (Pin 8) | Serial data input | Receives 8-bit control byte on rising SCLK edges; configures input mode, clock source, and power state. |
| DOUT (Pin 9) | Serial data output | Transmits 8-bit conversion result MSB-first on falling SCLK edges; three-state, compatible with 3V/5V logic. |
| SCLK (Pin 10) | Serial clock input | Drives data transfer and (in external mode) sets conversion speed; supports 50kHz–500kHz operation. |
Key Features
| Feature | Design Value |
|---|---|
| Software-configurable input modes | Unipolar, pseudo-differential, or bipolar operation selected via control byte-eliminates hardware rework for multi-sensor designs. |
| VDD monitoring capability | Dedicated mode measures supply voltage against internal reference-enables autonomous battery health checks without external components. |
| SPI/QSPI/MICROWIRE compatibility | No level-shifting or glue logic required-direct interface to ARM Cortex-M, PIC, or MSP430 microcontrollers with standard serial peripheral drivers. |
| Internal track/hold with no external hold capacitor | Reduces BOM count and layout area-simplifies design for space-constrained portable equipment. |
| Low-power power-down mode | 0.5µA shutdown current-extends battery life in intermittent-sampling applications like environmental sensor nodes. |
Applications
| Portable Data Logging | Hand-Held Measurement Devices |
|---|---|
|
Use Scenario: Battery-powered field logger capturing temperature, humidity, and voltage from multiple sensors at 10–50Hz intervals. IC Role / Device Role / Timing Role: Dual-channel ADC digitizing two analog inputs per cycle; internal reference ensures consistent scaling across varying battery voltage. Use Value: 105µA active current and 0.5µA shutdown current enable >1-year operation on a single CR2032 cell. |
Use Scenario: Pocket-sized multimeter measuring DC voltage, current, and resistance with auto-ranging and backlit LCD. IC Role / Device Role / Timing Role: Primary ADC converting front-end conditioned signals; software-selectable unipolar/bipolar mode supports both voltage and current measurement ranges. Use Value: Integrated +2.048V reference and track/hold eliminate external precision references and sample-hold ICs-reducing component count by 3. |
| Medical Instruments | System Diagnostics |
|
Use Scenario: Portable pulse oximeter acquiring photodiode signals and ambient light compensation in low-power mode. IC Role / Device Role / Timing Role: Simultaneous sampling of red/IR LED channels via CH0/CH1; VDD monitoring validates battery integrity before clinical readings. Use Value: ±0.2 LSB INL and 49dB SINAD ensure reliable SpO₂ calculation accuracy under variable lighting conditions. |
Use Scenario: Industrial PLC module monitoring supply rails, temperature, and fan tachometer signals for predictive maintenance. IC Role / Device Role / Timing Role: Dedicated ADC channel for VDD supervision and analog sensor inputs; SPI interface enables seamless integration into existing firmware stacks. Use Value: Single 3.3V supply operation and 10-pin µMAX package allow retrofit into legacy 24-pin DIP footprints using adapter PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit dual-channel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 2.7V–5.25V supply; 1MSPS max rate; no internal reference; requires external REF input. | Better speed but higher power (1.2mA); lacks VDD monitoring and bipolar mode. | Select when sampling >100ksps is required and external reference is already present. |
| MAX1110EUB+ | Same µMAX package; 10-bit resolution; 135µA supply current; +2.048V reference; identical pinout and control protocol. | Higher resolution at modest power penalty; drop-in upgrade path for precision-critical upgrades. | Choose for enhanced dynamic range where 8-bit quantization noise limits measurement fidelity. |
Compared with ADS7822U and MAX1110EUB+, the MAX1108EUB+ uniquely balances ultra-low power (105µA), integrated reference, VDD monitoring, and compact µMAX packaging-making it optimal for battery longevity and board-space constraints in portable diagnostics.
Availability
MAX1108EUB+T is available at Aetrix Electronics and suitable for portable data logging, hand-held measurement devices, and medical instruments requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for MAX1108EUB+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 portable applications.
The MAX1108EUB+T belongs to Maxim's low-power serial ADC product line, engineered specifically for energy-constrained, space-sensitive systems requiring reliable 8-bit digitization without external support components.
FAQ
What is the operating temperature range for MAX1108EUB+T?
The MAX1108EUB+T is rated for –40°C to +85°C operation, as confirmed by the Ordering Information table specifying "EUB" suffix for the extended temperature grade. This makes MAX1108EUB+T suitable for deployment in outdoor remote sensors, automotive cabin modules, and industrial field instruments where ambient temperatures exceed commercial-grade limits.
Does MAX1108EUB+T support bipolar input configurations?
Yes, MAX1108EUB+T supports bipolar operation via software configuration: when configured for pseudo-differential bipolar mode, the full-scale range becomes ±VREF/2 = ±1.024V, with COM serving as the reference midpoint. This capability is explicitly documented in the Features list and Functional Diagram, enabling direct digitization of AC-coupled or centered sensor outputs without external level-shifting circuitry.
Can MAX1108EUB+T operate with a 5V supply?
No-MAX1108EUB+T is specified only for +2.7V to +3.6V operation. Attempting to power it from 5V violates Absolute Maximum Ratings (VDD to GND = –0.3V to +6V is stress-only; functional operation above +3.6V is not guaranteed). For 4.5V–5.5V systems, the pin-compatible MAX1109EUB+T variant-with +4.096V internal reference-must be used instead of MAX1108EUB+T.
What is the minimum acquisition time for MAX1108EUB+T?
The minimum acquisition time (tACQ) for MAX1108EUB+T is 1µs, achieved at the maximum supported SCLK frequency of 2MHz. This value is specified in the Electrical Characteristics tables under "TRACK/HOLD" and is derived from the internal T/H circuit's RC time constant (6 × (RS + RIN) × 18pF), where RIN = 6.5kΩ. Accurate sampling requires the analog source impedance (RS) to be ≤2.7kΩ when operating at full speed.
How does the VDD monitoring mode work in MAX1108EUB+T?
In VDD monitoring mode, MAX1108EUB+T internally routes the VDD supply to the analog input multiplexer and converts it against its +2.048V internal reference. The resulting 8-bit code directly represents VDD as a fraction of 2.048V (e.g., code 0xFF ≈ 3.6V). This feature is enabled via bit configuration in the control byte and requires no external resistive divider-providing autonomous battery voltage tracking in MAX1108EUB+T-based systems.
MAX1108EUB+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 50k
- Number of Inputs:
- 2
- Input Type:
- Pseudo-Differential, 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, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-uMAX/uSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1108EUB+T FAQ
1.How can I place an order for MAX1108EUB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1108EUB+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 MAX1108EUB+T reliable?
The price and inventory of MAX1108EUB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1108EUB+T is usually 5 days.
3.What payment methods are accepted for MAX1108EUB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1108EUB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1108EUB+T?
MAX1108EUB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1108EUB+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 MAX1108EUB+T?
For technical support, including MAX1108EUB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1108EUB+T requirements.
6.How does Aetrix verify that MAX1108EUB+T is sourced from the original manufacturer or authorized distributors?
All MAX1108EUB+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 MAX1108EUB+T meets industry standards.
7.What is the process for return or replacement of MAX1108EUB+T?
All MAX1108EUB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1108EUB+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 MAX1108EUB+T part is unused and in its original packaging.
Return procedure for MAX1108EUB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1108EUB+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…
