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Analog Devices Inc./Maxim Integrated MAX1080AEUP
- Part No.:
- MAX1080AEUP
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX1080AEUP.pdf
- Description:
- IC ADC 10BIT SAR 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,425
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Product details
Overview
MAX1080AEUP from Maxim Integrated is a 10-bit, 400ksps serial analog-to-digital converter with integrated 8-channel multiplexer, track/hold, and internal +2.5V reference. It operates from a single +4.5V to +5.5V supply, supports software-configurable unipolar/bipolar and single-ended/pseudo-differential inputs, and delivers ±0.5 LSB INL and 60dB SINAD - enabling high-accuracy data acquisition in portable medical instruments and battery-powered sensor systems.
For engineers reviewing the MAX1080AEUP datasheet, MAX1080AEUP pinout, MAX1080AEUP application, or MAX1080AEUP equivalent, key selection considerations include its -40°C to +85°C industrial temperature rating, TSSOP-20 package compatibility, 2.5mA active supply current at 400ksps, and SPI/QSPI/MICROWIRE interface timing compliance per Figure 1 and Table 1 of the official datasheet.
Technical Context
The MAX1080AEUP employs successive-approximation (SAR) architecture with a dedicated track/hold circuit that acquires input signals in ≤468ns and completes conversion in 2.5µs using a 6.4MHz serial clock. Its pseudo-differential input structure allows four differential channel pairs (CH0/CH1 through CH6/CH7), while maintaining single-ended sampling on IN+ and stable COM/IN– reference during hold phase.
Internal reference buffering provides ±1.5% adjustment range via REFADJ pin, and four software-selectable power modes (normal, REDP, FASTPD, FULLPD) enable dynamic current scaling from 2.5mA down to 2µA. The device uses an 8-bit control byte to configure channel, polarity, and power mode prior to each conversion cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit SAR ADC output - supports 1024 discrete digital codes for precision measurement applications. |
| Sampling Rate | 400ksps maximum - enables real-time capture of signals up to 200kHz bandwidth without aliasing when paired with appropriate anti-alias filtering. |
| INL / DNL | ±0.5 LSB INL, ±1.0 LSB DNL - ensures monotonicity and <0.05% full-scale linearity error across temperature for calibrated systems. |
| Supply Voltage | +4.5V to +5.5V single supply - eliminates need for dual-rail or negative supplies in embedded industrial designs. |
| Reference | Internal +2.500V ±1.5% adjustable reference - reduces BOM count and improves system stability versus external references. |
| Power Modes | Four software-controlled modes: normal (2.5mA), REDP (1.3mA), FASTPD (0.9mA), FULLPD (2µA) - allows adaptive power management between conversions. |
| Interface | 4-wire SPI/QSPI/MICROWIRE-compatible serial interface - connects directly to microcontrollers without level-shifting or glue logic. |
Pinout & Package
The MAX1080AEUP is housed in a 20-pin Thin Shrink Small Outline Package (TSSOP) with 0.65mm pitch, JEDEC MO-153 compliant, and rated for -40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, VDD2 | Positive supply inputs | VDD1 powers analog section; VDD2 powers digital I/O - separate pins reduce noise coupling between domains. |
| GND | Analog and digital ground | Single common ground plane required; layout must minimize impedance between GND pin and system ground plane. |
| CH0–CH7 | Analog input channels | Eight single-ended or four pseudo-differential inputs - selected via 3-bit control word; input capacitance is 18pF. |
| COM | Common-mode reference | Sets zero-code voltage in single-ended mode; must remain stable within ±0.5LSB during conversion. |
| REF, REFADJ | Reference buffer I/O | REF outputs 2.500V nominal; REFADJ adjusts output ±1.5% or disables buffer when tied to VDD1. |
| DIN, DOUT, SCLK, CS, SSTRB | Serial interface signals | Standard 4-wire SPI interface; SSTRB strobes one clock before MSB - enables synchronous capture by DSPs like TMS320. |
| SHDN | Hardware shutdown control | Active-low pin forces FULLPD mode independently of software; reduces supply current to 2µA typical. |
Key Features
| Feature | Design Value |
|---|---|
| 8-channel analog multiplexer + track/hold | Reduces external signal conditioning components; supports multiplexed acquisition with consistent acquisition time ≤468ns. |
| Software-configurable input mode | Single control byte selects unipolar/bipolar and single-ended/pseudo-differential operation - simplifies firmware adaptation across sensor types. |
| Internal reference with ±1.5% adjustability | Eliminates external reference IC and trim pot; REFADJ pin allows calibration to match system gain requirements. |
| Four programmable power modes | Enables >1000× current reduction between conversions - critical for battery life in portable data loggers operating at <1ksps average rate. |
| TSSOP-20 industrial temperature grade | Validated for -40°C to +85°C operation - suitable for deployment in harsh environments without derating or thermal management overhead. |
Applications
| Portable Data Logging | Medical Instruments |
|---|---|
Use Scenario: Battery-powered environmental sensor node recording temperature, humidity, and pressure at 100Hz intervals over 72-hour deployments. IC Role / Device Role / Timing Role: ADC front-end digitizing conditioned analog outputs from multiple sensors via multiplexed CH0–CH7 inputs. Use Value: 2µA FULLPD current extends battery life; 400ksps headroom supports burst-mode diagnostics without hardware change. | Use Scenario: Handheld ECG monitor acquiring lead-II differential signals with 12-bit effective resolution via oversampling. IC Role / Device Role / Timing Role: Pseudo-differential ADC converting CH0/CH1 pair with COM referenced to Wilson central terminal. Use Value: ±0.5 LSB INL ensures diagnostic-grade amplitude accuracy; internal reference avoids drift-induced baseline wander. |
| Battery-Powered Instruments | Process Control |
Use Scenario: Field-deployable pH/ORP meter requiring 16-bit effective resolution via digital averaging of 10-bit samples. IC Role / Device Role / Timing Role: High-precision ADC interfacing with low-noise op-amp front-end and auto-zeroing calibration sequence. Use Value: 60dB SINAD and 76dB IMD support clean spectral analysis; software-selectable bipolar mode matches electrode offset ranges. | Use Scenario: Modular PLC analog input module digitizing 4–20mA loop signals from pressure transmitters in factory automation. IC Role / Device Role / Timing Role: Multiplexed ADC scanning eight 4–20mA channels with simultaneous reference monitoring via REF pin. Use Value: 2.5mA active current enables dense channel packing; SPI interface simplifies FPGA-based data aggregation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit serial ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-bit resolution, 200ksps max, +2.7V to +5.25V supply, no internal reference | Limited to lower-accuracy industrial sensing; requires external reference and level-shifting for 5V systems | Choose for cost-sensitive, non-critical measurements where 8-bit resolution suffices and board space permits external reference. |
| MAX11131ETE+ | 12-bit resolution, 500ksps, internal 4.096V reference, SPI-only interface, 16-TQFN | Higher resolution and speed but lacks pseudo-differential mode and industrial temp grade (-40°C to +85°C) | Choose when 12-bit precision and faster throughput are mandatory, and system design accommodates smaller QFN footprint and tighter reference tolerance. |
Compared with ADS7822U and MAX11131ETE+, the MAX1080AEUP uniquely balances 10-bit accuracy, 400ksps speed, pseudo-differential capability, internal adjustable reference, and extended temperature operation - making it optimal for portable, battery-constrained, and industrial-grade data acquisition where flexibility and reliability are prioritized over raw bit depth or minimal package size.
Availability
MAX1080AEUP is available at Aetrix Electronics and suitable for portable data logging, medical instrumentation, and battery-powered sensor systems requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX1080AEUP 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 MAX1080AEUP belongs to Maxim's high-speed, low-power serial ADC product line, engineered specifically for portable and energy-conscious systems needing accurate multi-channel digitization without external reference or complex support circuitry.
FAQ
What is the operating temperature range of the MAX1080AEUP?
The MAX1080AEUP is specified for operation from -40°C to +85°C. This industrial temperature grade is confirmed in the Ordering Information table of the datasheet, where "EUP" suffix denotes the extended temperature range, distinguishing it from "CUP" (0°C to +70°C) variants. All electrical characteristics in the MAX1080 section are guaranteed across this full range unless otherwise noted.
Does the MAX1080AEUP require an external reference voltage?
No, the MAX1080AEUP does not require an external reference voltage. It integrates a buffered +2.500V ±1.5% reference (VREF = 2.480V to 2.520V) accessible at the REF pin. An external reference can be used by disabling the internal buffer via REFADJ, but the internal reference is fully functional and production-tested for the MAX1080AEUP's specified performance.
How many analog input channels does the MAX1080AEUP support, and what configurations are available?
The MAX1080AEUP supports eight analog input channels (CH0–CH7) configurable as either eight single-ended inputs or four pseudo-differential pairs (CH0/CH1, CH2/CH3, CH4/CH5, CH6/CH7). Configuration is controlled by a software-programmable 3-bit channel select field in the 8-bit control byte, as defined in Tables 1 and 2 of the datasheet.
What power supply voltage range is valid for the MAX1080AEUP?
The MAX1080AEUP operates from a single +4.5V to +5.5V supply applied to both VDD1 and VDD2 pins. This range is explicitly stated in the General Description and Electrical Characteristics sections. Operation outside this range - including use at 3.3V - applies only to the MAX1081 variant, not the MAX1080AEUP.
Is the MAX1080AEUP pin-compatible with other devices in the MAX1080/MAX1081 family?
Yes, the MAX1080AEUP is pin-compatible with all MAX1080 variants (e.g., MAX1080ACUP, MAX1080BCUP) and the MAX1081 series, as they share the identical 20-pin TSSOP package and pinout. However, voltage supply ranges and sampling rates differ: MAX1080 requires +4.5V to +5.5V and achieves 400ksps, whereas MAX1081 operates from +2.7V to +3.6V at 300ksps.
MAX1080AEUP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 400k
- Number of Inputs:
- 4, 8
- 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:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 20-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1080AEUP FAQ
1.How can I place an order for MAX1080AEUP through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1080AEUP 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 MAX1080AEUP reliable?
The price and inventory of MAX1080AEUP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1080AEUP is usually 5 days.
3.What payment methods are accepted for MAX1080AEUP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1080AEUP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1080AEUP?
MAX1080AEUP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1080AEUP 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 MAX1080AEUP?
For technical support, including MAX1080AEUP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1080AEUP requirements.
6.How does Aetrix verify that MAX1080AEUP is sourced from the original manufacturer or authorized distributors?
All MAX1080AEUP 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 MAX1080AEUP meets industry standards.
7.What is the process for return or replacement of MAX1080AEUP?
All MAX1080AEUP units undergo pre-shipment inspection (PSI). If there is an issue with MAX1080AEUP, 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 MAX1080AEUP part is unused and in its original packaging.
Return procedure for MAX1080AEUP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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