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Analog Devices Inc./Maxim Integrated MAX1082AEUE+
- Part No.:
- MAX1082AEUE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX1082AEUE+.pdf
- Description:
- IC ADC 10BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,660
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Product details
Overview
MAX1082AEUE+ from Maxim Integrated is a 10-bit, 4-channel serial analog-to-digital converter (ADC) with internal +2.5V reference, 400ksps sampling rate, and single +4.5V to +5.5V supply operation. It integrates a 4-input multiplexer, track/hold circuit, and SPI/QSPI/MICROWIRE-compatible 4-wire serial interface - designed for portable data logging and battery-powered instrumentation requiring precision, low power, and compact TSSOP packaging.
For engineers reviewing the MAX1082AEUE+ datasheet, MAX1082AEUE+ pinout, MAX1082AEUE+ application, or MAX1082AEUE+ equivalent, key selection criteria include its ±0.5 LSB INL over –40°C to +85°C, software-configurable unipolar/bipolar and single-ended/pseudo-differential input modes, fast power-down capability (0.9mA), and guaranteed performance with internal reference or external 1V–VDD reference support.
Technical Context
The MAX1082AEUE+ employs successive-approximation register (SAR) architecture with integrated track/hold and analog input multiplexer. Its conversion timing is fully synchronized to an external serial clock (up to 6.4MHz), enabling precise control of acquisition (400ns min) and conversion (2.5µs) intervals without internal oscillator dependency.
It supports four software-selectable power modes - normal (2.5mA), reduced-power (1.3mA), fast power-down (0.9mA), and full power-down (2µA) - with automatic wake-up via serial interface activity. Input configuration is programmable per channel for unipolar or bipolar, single-ended or pseudo-differential operation, with COM pin serving as common-mode reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit SAR ADC - delivers 1024 discrete output codes with monotonic transfer function and no missing codes over temperature. |
| Sampling Rate | 400ksps - enables real-time digitization of signals up to 200kHz full-linear bandwidth (–3dB point) with <50ps aperture jitter. |
| INL / DNL | ±0.5 LSB / ±1.0 LSB - ensures high code-to-code linearity critical for accurate sensor measurement and closed-loop control feedback. |
| Reference | Internal +2.500V ±1.5% adjustable reference (REFADJ pin) - eliminates need for external voltage reference in space-constrained designs. |
| Supply Range | +4.5V to +5.5V on VDD1/VDD2 - operates robustly across industrial-grade supply variation without external regulation. |
| Operating Temp | –40°C to +85°C - qualified for extended-temperature industrial and automotive-adjacent applications including process control and medical instruments. |
| Power Modes | Four software-controlled states: normal (2.5mA), REDP (1.3mA), FASTPD (0.9mA), FULLPD (2µA) - enables dynamic power scaling between conversions. |
Pinout & Package
MAX1082AEUE+ is housed in a 16-pin TSSOP package (4.4mm × 5.0mm, 0.65mm pitch) with exposed pad for thermal enhancement. Pin functions are validated per Maxim's official datasheet Rev 2 (12/2014).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, VDD2 (Pins 1, 16) | Positive supply inputs | Independent but matched supply rails; must be within ±0.3V of each other and operate at +4.5V to +5.5V for MAX1082 family compliance. |
| CH0–CH3 (Pins 2–5) | Analog input channels | Software-multiplexed single-ended or pseudo-differential inputs; support ±VREF/2 common-mode range referenced to COM pin. |
| COM (Pin 6) | Analog ground reference | Sets zero-code voltage in single-ended mode; must remain stable to ±0.5LSB during conversion to avoid accuracy degradation. |
| SHDN (Pin 7) | Hardware shutdown control | Active-low pin that forces device into full power-down (2µA) independent of software state - used for system-level power gating. |
| REF (Pin 8) | Reference buffer output / external ref input | Provides 2.500V ±1.5% internal reference; accepts external 1V–VDD reference when REFADJ is tied to VDD1 to disable internal buffer. |
| REFADJ (Pin 9) | Reference adjustment terminal | Enables ±1.5% fine-tuning of internal reference voltage; requires 0.01µF bypass capacitor to GND for stability. |
| GND (Pin 10) | Analog/digital ground | Single ground plane required; separation from noisy digital returns is recommended to preserve DC accuracy and SNR. |
| DOUT (Pin 11) | Serial data output | MSB-first, 12-bit frame (10 data + 2 sub-LSB bits) clocked on SCLK rising edge; high-impedance when CS = high. |
| SSTRB (Pin 12) | Serial strobe output | Pulses high for one SCLK period before MSB decision - provides hardware timing cue for TMS320-family DSP synchronization. |
| DIN (Pin 13) | Serial data input | Accepts 8-bit control byte defining channel, polarity, differential mode, and power mode; start bit is first logic '1' after CS fall. |
| CS (Pin 14) | Chip select | Active-low enable for serial interface; controls DOUT/SSTRB three-state behavior and initiates conversion sequence on falling edge. |
| SCLK (Pin 15) | Serial clock input | Drives both data transfer and internal SAR conversion timing; 50% duty cycle required; max 6.4MHz for MAX1082 operation. |
Key Features
| Feature | Design Value |
|---|---|
| 4-channel analog multiplexer + track/hold | Reduces external signal conditioning components; supports sequential sampling of four sensors or transducers with <400ns acquisition time. |
| Software-configurable input modes | Per-channel selection of unipolar/bipolar and single-ended/pseudo-differential operation - simplifies firmware adaptation across diverse sensor types. |
| SPI/QSPI/MICROWIRE/TMS320 compatibility | Direct connection to microcontrollers and DSPs without level shifters or glue logic - reduces BOM count and PCB area. |
| Internal +2.5V reference with REFADJ | Eliminates external reference IC and trimming resistors; ±1.5% adjustability accommodates system-level calibration requirements. |
| Four selectable power modes | Enables adaptive power management - e.g., FULLPD between samples in battery-powered data loggers to extend runtime by >100× vs. continuous operation. |
| Hard-wired SHDN + auto-wake | Hardware shutdown ensures deterministic low-power entry; serial interface activity automatically powers up device - no firmware initialization delay. |
Applications
| Portable Data Logging | Medical Instrumentation |
|---|---|
|
Use Scenario: Battery-powered handheld devices recording temperature, pressure, and ECG waveforms over hours or days. IC Role / Device Role: Primary ADC acquiring multi-channel analog biosignals with low noise, high linearity, and minimal self-heating. Use Value: 2µA full power-down current extends battery life; ±0.5 LSB INL ensures diagnostic-grade accuracy; internal reference removes calibration drift risk. |
Use Scenario: Compact patient monitors measuring SpO₂, respiration rate, and non-invasive blood pressure. IC Role / Device Role: Signal-conditioning front-end ADC converting analog sensor outputs to digital for real-time analysis. Use Value: Pseudo-differential input mode rejects common-mode noise from electrophysiological sources; 400ksps supports high-fidelity waveform capture. |
| Battery-Powered Instruments | Process Control Systems |
|
Use Scenario: Field-deployable multimeters, environmental sensors, and handheld analyzers operating from coin cells or Li-ion packs. IC Role / Device Role: Precision digitizer interfacing with thermistors, RTDs, strain gauges, and pH electrodes. Use Value: Single +4.5V to +5.5V supply simplifies power architecture; software-selectable bipolar mode accommodates negative sensor offsets without external op-amps. |
Use Scenario: Industrial PLC I/O modules and distributed control nodes monitoring flow, level, and valve position. IC Role / Device Role: Isolated analog input channel ADC providing high-reliability digitization in electrically noisy factory environments. Use Value: –40°C to +85°C rating ensures operation in uncontrolled enclosures; 6MHz input bandwidth supports anti-alias filtering flexibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 2.7V–5.25V supply; 200ksps; no internal reference; requires external REF input. | Lacks integrated reference and temperature range (–40°C to +85°C not guaranteed); lower sampling rate limits high-speed transient capture. | Choose when external reference already exists and cost-per-channel is prioritized over design simplicity. |
| AD7490BRUZ | 12-bit resolution; 1MSPS; +2.7V to +5.25V; internal 2.5V reference; 16-channel mux. | Higher resolution and speed, but larger 24-lead TSSOP package and higher typical supply current (3.2mA @ 1MSPS) than MAX1082AEUE+ (2.5mA @ 400ksps). | Choose when 12-bit precision and 16-channel scalability outweigh size and power constraints in new designs. |
Compared with ADS7822U and AD7490BRUZ, MAX1082AEUE+ offers optimal balance of integrated reference, guaranteed –40°C to +85°C performance, compact 16-pin TSSOP footprint, and ultra-low full power-down current - making it ideal for space- and energy-constrained embedded systems where reference stability and thermal robustness are critical.
Availability
MAX1082AEUE+ is available at Aetrix Electronics and suitable for portable data logging, medical instrumentation, and battery-powered instruments requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX1082AEUE+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX1082/MAX1083 product line was engineered for low-power, high-accuracy data acquisition in portable and embedded systems - emphasizing integration of reference, multiplexer, and serial interface to minimize external components and PCB area.
FAQ
What is the maximum sampling rate supported by the MAX1082AEUE+?
The MAX1082AEUE+ supports a maximum sampling rate of 400ksps under specified conditions: VDD1 = VDD2 = +4.5V to +5.5V, fSCLK = 6.4MHz, and 16 clocks per conversion cycle. This rate is achievable across its full operating temperature range of –40°C to +85°C and enables digitization of signals up to 200kHz full-linear bandwidth.
Does the MAX1082AEUE+ require an external reference voltage?
No, the MAX1082AEUE+ includes an internal +2.500V reference with ±1.5% adjustability via the REFADJ pin. An external reference (1V to VDD) may be used by disabling the internal buffer - but the internal reference eliminates BOM cost and board space in most applications, and is fully characterized over temperature.
How does the MAX1082AEUE+ handle power management in battery-operated systems?
The MAX1082AEUE+ provides four software-selectable power modes: normal (2.5mA), reduced-power (1.3mA), fast power-down (0.9mA), and full power-down (2µA). In full power-down, supply current drops to microamp levels - enabling extended battery life in intermittent-sampling applications like environmental sensors and handheld meters.
Can the MAX1082AEUE+ interface directly with a TMS320 DSP?
Yes, the MAX1082AEUE+ features a dedicated SSTRB (serial strobe) output that pulses high for one SCLK period before the MSB decision - providing precise hardware synchronization for TI TMS320-family DSPs. Its 4-wire SPI-compatible interface requires no external logic for direct connection.
What input configurations does the MAX1082AEUE+ support?
The MAX1082AEUE+ supports software-configurable unipolar or bipolar operation and single-ended (CH0–CH3 vs. COM) or pseudo-differential (CH0/CH1 or CH2/CH3 pairs) inputs. The COM pin serves as the common-mode reference, and input voltage range is ±VREF/2 for bipolar or 0V to VREF for unipolar modes.
MAX1082AEUE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 400k
- Number of Inputs:
- 2, 4
- 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:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1082AEUE+ FAQ
1.How can I place an order for MAX1082AEUE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1082AEUE+ 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 MAX1082AEUE+ reliable?
The price and inventory of MAX1082AEUE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1082AEUE+ is usually 5 days.
3.What payment methods are accepted for MAX1082AEUE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1082AEUE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1082AEUE+?
MAX1082AEUE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1082AEUE+ 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 MAX1082AEUE+?
For technical support, including MAX1082AEUE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1082AEUE+ requirements.
6.How does Aetrix verify that MAX1082AEUE+ is sourced from the original manufacturer or authorized distributors?
All MAX1082AEUE+ 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 MAX1082AEUE+ meets industry standards.
7.What is the process for return or replacement of MAX1082AEUE+?
All MAX1082AEUE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1082AEUE+, 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 MAX1082AEUE+ part is unused and in its original packaging.
Return procedure for MAX1082AEUE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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