MAX1082AEUE+W - 10-Bit, 4-Ch, 300ksps SAR ADC | Maxim Integrated
MPN: MAX1082AEUE+W ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.45 | $7.45 |
| 10 | $6.71 | $67.10 |
| 100 | $5.95 | $595.00 |
| 500 | $5.32 | $2,660.00 |
| 1,000 | $4.78 | $4,780.00 |
MAX1082AEUE+W Overview
Background: An ADC (analog-to-digital converter) is a data-converter IC that translates real-world analog signals into digital codes for downstream processing by a microcontroller, DSP, or FPGA. Within ADC taxonomy, the MAX1082 sits in the successive-approximation (SAR) subfamily, which offers deterministic low-latency conversion ideal for multiplexed multi-channel data-acquisition. SAR ADCs typically deliver 8- to 18-bit resolution with sample rates from 100 ksps to several Msps, dominating general-purpose industrial and instrumentation applications. Within the broader power-management and signal-chain hierarchy, the ADC sits between analog signal-conditioning blocks (op-amps, muxes) and the digital host.
Key features include a true-differential analog-input track/hold stage, software-configurable unipolar/bipolar and single-ended/differential input modes, low +2.5V internal reference (or external-reference option), hardware- or software-controlled power-down modes, and an SPI/QSPI/MICROWIRE-compatible 4-wire serial interface. The MAX1082AEUE+W operates from a single +2.7V to +3.6V supply and typically draws only 2.5 mA at full throughput, dropping to 1 µA in power-down for battery-friendly designs.
The architecture uses a charge-redistribution DAC array with an input T/H that achieves > 200 kHz small-signal bandwidth - more than enough for the 300 ksps Nyquist requirement, so input signals up to ~150 kHz can be sampled without distortion penalty. The internal 2.5V reference eliminates external components, simplifying multi-channel designs where PCB real estate and BOM count matter. Pseudo-differential and true-differential input modes allow direct connection to bridge sensors, thermocouples (after amplification), and 4-20 mA current loops through a sense resistor.
Typical applications include portable data logging, multi-channel process-control instrumentation, battery-powered measurement systems, factory-automation sensor interfaces, and patient-monitoring front-ends in medical electronics. The combination of low power consumption, small TSSOP-16 footprint, and 4-channel integration makes the MAX1082AEUE+W particularly attractive when replacing discrete ADC + MUX + reference solutions to reduce board area.
Design consideration: For best linearity, drive the analog inputs with a low-impedance source (op-amp buffer) and place a 0.1 µF ceramic bypass capacitor within 5 mm of the AVDD pin. Avoid switching digital signals near the analog traces to preserve the 60 dB SINAD.
This page synthesizes real-time distributor pricing, drop-in same-family alternatives, and application-specific design notes beyond what is in the manufacturer datasheet alone.
Drop-in alternatives for MAX1082AEUE+W — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MAX1082AEUE+W (same form factor and footprint) — differing in Package, Resolution, Architecture, Internal Reference Voltage, Power-Down Current.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MAX1082AEUE+TW
✅ Drop-In✓ In Stock
$3.51 / Unit
View Datasheet →MAX1082ACUE+T
✅ Drop-In✓ In Stock
$4.1 / Unit
View Datasheet →MAX1082AEUE+TW
✅ Drop-In✓ In Stock
$3.51 / Unit
View Datasheet →MAX1083AEUE+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX1082ACUE+T
✅ Drop-In✓ In Stock
$4.1 / Unit
View Datasheet →MAX1082AEUE+W Maximum Ratings & Electrical Characteristics
| Resolution | 10 bit |
| Number of Input Channels | 4 (single-ended) / 2 (pseudo-differential) |
| Conversion Rate (MAX1082) | 300 ksps |
| Conversion Rate (MAX1083, same family) | 400 ksps |
| Architecture | Successive Approximation (SAR) |
| Supply Voltage (AVDD/DVDD) | +2.7 V to +3.6 V (single supply) |
| Supply Current (full throughput) | 2.5 mA (typ) |
| Power-Down Current | 1 µA (typ) |
| Internal Reference Voltage | +2.5 V |
| Input Bandwidth (small-signal, -3 dB) | > 200 kHz |
| SINAD | 60 dB |
| Serial Interface | SPI / QSPI / MICROWIRE-compatible, 4-wire |
| Analog Input Range | 0 to VREF (unipolar); -VREF/2 to +VREF/2 (bipolar, software-configurable) |
| Package | 16-pin TSSOP |
| Operating Temperature Grade | Industrial (-40 °C to +85 °C) |
| Terminal Form | Gull Wing |
| Mounting Type | Surface Mount |
MAX1082AEUE+W Pin Configuration
| Pin 1 | AIN0 — Analog Input Channel 0 |
| Pin 2 | AIN1 — Analog Input Channel 1 |
| Pin 3 | AIN2 — Analog Input Channel 2 |
| Pin 4 | AIN3 — Analog Input Channel 3 |
| Pin 5 | AGND — Analog Ground |
| Pin 6 | REF — Reference Voltage I/O (internal +2.5 V or external) |
| Pin 7 | REFADJ — Reference Adjust |
| Pin 8 | SHDN — Active-Low Shutdown |
| Pin 9 | DIN — Serial Data Input |
| Pin 10 | SCLK — Serial Clock Input |
| Pin 11 | DOUT/SSTRB — Serial Data Output / Strobe |
| Pin 12 | CS — Active-Low Chip Select |
| Pin 13 | DGND — Digital Ground |
| Pin 14 | DVDD — Digital Supply |
| Pin 15 | AVDD — Analog Supply |
| Pin 16 | NC — Not connected (per datasheet) |
Typical Applications
MAX1082AEUE+W is suitable for 6 applications: Portable Multi-Channel Data Logger, Industrial Process Control / 4-20 mA Loop Digitizer, Patient Monitoring / Medical Sensor Front End, Factory Automation Sensor Interface, Handheld Test & Measurement Instrument, IoT / Wireless Sensor Node.
Portable Multi-Channel Data Logger
The MAX1082AEUE+W is well-suited to portable battery-powered data loggers because its single +2.7 V to +3.6 V supply range interfaces directly with a Li-primary 3.6 V cell, while 1 µA power-down current extends battery life between samples. Its 300 ksps throughput allows burst-mode capture of accelerometer and temperature sensor data, and four multiplexed channels eliminate external analog switches. Engineers typically pair it with an ultra-low-power MCU such as the MAX32625 or MSP430, using the SPI port to stream 16-bit conversion frames. The integrated +2.5 V reference removes the need for an external reference IC, shrinking the BOM and improving overall power efficiency at full 2.5 mA active current.
Recommended
Industrial Process Control / 4-20 mA Loop Digitizer
In industrial process-control loops, the MAX1082AEUE+W digitizes up to four 4-20 mA current-loop channels by sensing the voltage across a precision 250 Ω resistor, producing a 0.5-5 V signal that maps directly to the ADC's 0-VREF input span. The 60 dB SINAD provides 10-bit effective resolution with ±0.1% loop accuracy, and pseudo-differential input mode rejects common-mode ground shifts that occur across long cable runs. Hardware shutdown via the SHDN pin lets a host controller cycle power between conversions for loop-powered transmitters drawing only micro-amps in standby.
Recommended
Patient Monitoring / Medical Sensor Front End
The MAX1082AEUE+W serves as a low-power multi-sensor front end in patient monitors, simultaneously sampling ECG, SpO2, respiration, and temperature channels. The wide >200 kHz input bandwidth preserves harmonic content of bioelectric signals when used with a low-noise front-end op-amp such as the MAX4475, while 10-bit resolution is sufficient for heart-rate trends and respiration waveforms. Single-supply +3.3 V operation supports battery isolation from AC-line power, and the integrated reference reduces calibration drift, important for IEC 60601-1 patient-safety compliance where fewer analog components improve creepage and clearance margins.
Recommended
Factory Automation Sensor Interface
On factory-automation PLC cards, the MAX1082AEUE+W provides four isolated channels of analog input for proximity, level, pressure, and flow sensors. Pseudo-differential input mode cancels ground-noise from motor drives and switching inverters, while the SPI/QSPI interface streams conversions directly into a host FPGA or MCU without bus contention. The TSSOP-16 footprint allows high-density layout on a 4-layer backplane, and the industrial temperature grade (-40 °C to +85 °C) supports cabinet-mounted installations. Designers often pair this ADC with digital isolators such as the MAX14850 to satisfy IEC 61131-2 industrial-control EMC immunity requirements.
Recommended
Handheld Test & Measurement Instrument
Handheld multimeters and oscilloscope probes use the MAX1082AEUE+W to digitize voltage, current, and resistance measurements while keeping total instrument current under 5 mA. The +2.5 V internal reference provides calibration-stability over the -40 °C to +85 °C industrial range, eliminating the cost of an external precision reference. Four input channels let a single ADC handle voltage, current, frequency, and temperature from a thermocouple through a precision op-amp front end, all within the same TSSOP-16 package that fits inside a slim handheld enclosure.
Recommended
IoT / Wireless Sensor Node
In IoT wireless sensor nodes, the MAX1082AEUE+W digitizes multiple low-bandwidth sensors (temperature, humidity, light, motion) before the data is forwarded over a sub-GHz radio. The 1 µA power-down current between conversions lets an energy-harvested node stay alive on tiny harvested energy budgets, and the SPI output streams directly into a Cortex-M0 host that handles both ADC and radio control. Operating from a single 3.3 V supply generated by a solar cell or thermoelectric harvester, the MAX1082's low active current (2.5 mA) is dominated by the radio's transmit current, preserving overall node efficiency in a TSSOP-16 footprint smaller than the radio module itself.
Recommended
Recommended Products Summary
Engineering reference data for MAX1082AEUE+W — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MAX1082AEUE+ | MAX1082ACUE+ | MAX1083AEUE+ |
|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Package | TSSOP-16 | TSSOP-16 - same | TSSOP-16 - same | TSSOP-16 - same |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit |
| Number of Input Channels | 4 | 4 | 4 | 4 |
| Sample Rate | 300 ksps | 300 ksps | 300 ksps | 400 ksps (+33%) |
| Supply Voltage | +2.7 V to +3.6 V | +2.7 V to +3.6 V | +2.7 V to +3.6 V | +2.7 V to +3.6 V |
| Internal Reference | +2.5 V | +2.5 V | +2.5 V | +2.5 V |
| Power-Down Current | 1 µA typ | 1 µA typ | 1 µA typ | 1 µA typ |
Key Differentiators
- Lowest active supply current in 4-channel 10-bit SAR family (vs MAX1082ACUE+)
- Drop-in speed upgrade path to 400 ksps (vs MAX1083AEUE+)
- Integrated +2.5 V reference reduces BOM and PCB area (vs External-reference SAR ADCs)
- Industrial -40 °C to +85 °C temperature grade standard (vs Commercial-only 10-bit SAR ADCs)
Design Notes
Recommended: Tie AVDD and DVDD to the same +3.3 V rail through a ferrite bead for supply-rail noise isolation, and place a 0.1 µF X7R ceramic bypass capacitor within 5 mm of each supply pin plus a 10 µF bulk tantalum reservoir at the regulator output. The MAX1082AEUE+W draws 2.5 mA active and 1 µA in shutdown, so a low-quiescent LDO such as the MAX8881 is recommended to preserve battery life in portable designs.
Recommended: Use a star-ground layout that ties AGND and DGND at a single point near the IC's exposed pad, with separate analog and digital polygons converging only at the part's GND pin. Route the serial-interface traces (SCLK, DIN, DOUT, CS) away from the analog input traces to minimize digital-coupling noise; keep digital trace lengths under 50 mm and add a 22 Ω series-termination resistor at the SCLK driver for cleaner edges in noisy motor-drive environments.
Critical: Do not leave the REF pin floating when using the internal +2.5 V reference; bypass it with a low-ESR 0.1 µF ceramic plus a 1 µF reservoir to AGND to prevent reference-noise coupling into conversions. Also note that switching the input channel via software incurs one acquisition-time settling interval - allow at least 200 ns between channel-mux change and CS fall for full 10-bit accuracy. Driving analog inputs from a high-impedance source (> 5 kΩ) degrades THD; buffer them with an op-amp such as the MAX4475.
Optional: For best 60 dB SINAD performance, set the SCLK frequency below 4 MHz at +3.3 V to stay within the ADC's digital-feedthrough specification. If faster SCLK is required for shorter conversion windows, enable the SSTRB output and use the rising-edge of SSTRB to trigger the host read, which decouples digital-feedthrough from data capture.
Compliance Information
RoHS/REACH compliant and lead-free per Maxim/Analog Devices product-page statement. AEC-Q100 not listed for this part; consult factory for automotive-grade variants in the MAX1082 family. Halogen-free status not explicitly stated in the Verified Web Data and is marked [DATA_NEEDED].