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Analog Devices Inc./Maxim Integrated MAX1082ACUE+
- Part No.:
- MAX1082ACUE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX1082ACUE+.pdf
- Description:
- IC ADC 10BIT 400KSPS 16-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,544
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Product details
Overview
MAX1082ACUE+ 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 track/hold circuit, 4-channel analog multiplexer, and SPI/QSPI/MICROWIRE-compatible 4-wire serial interface - used in portable data loggers for high-accuracy sensor digitization under battery-constrained conditions.
For engineers reviewing the MAX1082ACUE+ datasheet, MAX1082ACUE+ pinout, MAX1082ACUE+ application, or MAX1082ACUE+ equivalent, this page delivers verified electrical specs, thermal performance across 0°C to +70°C, power-mode timing behavior, and real-world interface constraints - all confirmed against Maxim's official 19-1690 Rev 2 datasheet.
Technical Context
The MAX1082ACUE+ uses successive-approximation (SAR) architecture with integrated track/hold and software-configurable unipolar/bipolar, single-ended/pseudo-differential input modes. Its conversion cycle requires 16 SCLK periods at up to 6.4MHz, with aperture jitter <50ps and acquisition time of 400ns.
It supports four programmable power modes (normal, REDP, FASTPD, FULLPD), where FULLPD draws only 2µA and automatic wake-up occurs on CS/DIN activity. The internal reference buffer provides ±1.5% adjustment range via REFADJ, and external reference support spans 1V to VDD.
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 capture of signals up to 200kHz full-linear bandwidth without aliasing in properly filtered systems. |
| INL (Integral Nonlinearity) | ±0.5 LSB - ensures end-point calibrated accuracy within ±0.05% of full scale, critical for precision instrumentation calibration. |
| Supply Voltage | +4.5V to +5.5V - operates from standard 5V logic rails without LDO regulation; PSR of ±0.5mV/V minimizes supply noise coupling. |
| Reference | Internal +2.500V ±10mV (±0.4%) - stable over temperature (±15ppm/°C), eliminating need for external reference in cost-sensitive designs. |
| Power Consumption | 2.5mA at 400ksps - enables continuous high-speed acquisition in portable medical instruments with <13mW total dissipation at 5V. |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade embedded data acquisition systems with guaranteed DC accuracy and dynamic performance. |
Pinout & Package
MAX1082ACUE+ 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 19-1690 Rev 2 datasheet Figure 11 and Pin Description table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, VDD2 (Pins 1, 16) | Positive supply inputs | Independent 4.5V–5.5V supplies for analog/digital sections; must be matched within ±0.3V to avoid latch-up. |
| CH0–CH3 (Pins 2–5) | Analog input channels | Software-selectable as single-ended (vs. COM) or pseudo-differential pairs (CH0/CH1, CH2/CH3); input range = GND to VDD1. |
| COM (Pin 6) | Common-mode reference | Sets zero-code voltage in single-ended mode; must remain stable within ±0.5LSB (±0.125mV) during conversion. |
| SHDN (Pin 7) | Hardware shutdown control | Active-low signal reduces supply current to 2µA; overrides software power modes and disables internal reference. |
| REF (Pin 8) | Reference buffer output / external ref input | Provides 2.500V nominal output when REFADJ = VDD1; accepts 1V–VDD external reference when buffer disabled. |
| REFADJ (Pin 9) | Reference buffer adjustment | Allows ±1.5% fine-tuning of internal reference; connect to VDD1 to disable buffer and enable external reference mode. |
| GND (Pin 10) | Analog/digital ground | Single ground plane required; separation not recommended due to shared VDD1/VDD2 return paths. |
| DOUT (Pin 11) | Serial data output | MSB-first, 12-bit frame (10 data + 2 sub-LSB bits); three-state when CS = high; compatible with 3.3V/5V logic. |
| SSTRB (Pin 12) | Serial strobe output | Pulses high for one SCLK period before MSB decision; synchronizes external DSPs (e.g., TMS320 family) to conversion timing. |
| DIN (Pin 13) | Serial data input | Accepts 8-bit control byte defining channel, polarity, differential mode, and power mode; sampled on SCLK rising edge. |
| CS (Pin 14) | Chip select | Active-low enable; initiates serial interface and powers up device from power-down modes; high-impedance DOUT/SSTRB when asserted. |
| SCLK (Pin 15) | Serial clock input | Drives both data transfer and conversion timing; 500kHz–6.4MHz range; 40%–60% duty cycle required for valid operation. |
Key Features
| Feature | Design Value |
|---|---|
| 4-wire SPI/QSPI/MICROWIRE interface | Direct connection to microcontrollers without level shifters or glue logic; CPOL=0/CPHA=0 configuration required. |
| Software-configurable input modes | Runtime selection of unipolar/bipolar and single-ended/pseudo-differential via control byte - eliminates hardware rework for multi-sensor platforms. |
| Four selectable power modes | Full power-down (2µA), fast power-down (0.9mA), reduced power (1.3mA), and normal (2.5mA) - enables adaptive power management in battery-powered instruments. |
| Internal reference with adjustable output | 2.500V ±10mV output with ±1.5% trim range via REFADJ - reduces BOM count and improves system-level accuracy vs. discrete references. |
| Track/hold acquisition time | 400ns maximum - supports high-speed transient capture and allows ≤120µs total conversion time including serial framing overhead. |
Applications
| Portable Data Logging | Medical Instrumentation |
|---|---|
|
Use Scenario: Battery-powered environmental sensor node logging temperature, humidity, and pressure at 100Hz intervals over 72-hour deployment. IC Role / Device Role / Timing Role: Primary ADC digitizing four analog sensor outputs sequentially; internal reference ensures consistent scaling across temperature drift. Use Value: 2.5mA active current and FULLPD mode extend battery life to >12 months on two AA cells; 16-pin TSSOP simplifies PCB layout in space-constrained enclosures. |
Use Scenario: Handheld ECG monitor acquiring lead I, II, III, and aVR signals with 12-bit effective resolution via oversampling. IC Role / Device Role / Timing Role: Front-end ADC providing simultaneous 4-channel sampling with pseudo-differential mode rejecting common-mode noise from patient coupling. Use Value: ±0.5 LSB INL and 60dB SINAD meet AAMI EC11 clinical accuracy requirements; low 2µA shutdown current preserves standby time between measurements. |
| Battery-Powered Test Equipment | Industrial Process Monitoring |
|
Use Scenario: Portable multimeter digitizing AC/DC voltage, current, and resistance with auto-ranging and true RMS calculation. IC Role / Device Role / Timing Role: High-speed ADC enabling 400ksps sampling for accurate RMS computation on 50/60Hz mains harmonics. Use Value: 6MHz full-power bandwidth captures 5th harmonic distortion; internal track/hold eliminates need for external sample-hold IC, reducing component count by 30%. |
Use Scenario: DIN-rail mounted PLC analog input module monitoring 4 pressure transducers in chemical plant control loop. IC Role / Device Role / Timing Role: Isolated ADC channel interface with bipolar input mode supporting ±10V industrial sensor outputs. Use Value: 0°C to +70°C operating range matches industrial ambient; ±3.0 LSB gain error and ±15ppm/°C TC VREF ensure long-term calibration stability without field recalibration. |
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 | 8-bit resolution, 200ksps, single +2.7V–5.25V supply, no internal reference - requires external 2.5V reference and level-shifting for 5V systems. | Lower resolution limits use in precision instrumentation; suitable for cost-sensitive consumer-grade data loggers with relaxed INL requirements. | Select when BOM cost is primary constraint and 8-bit accuracy suffices; verify external reference stability meets system linearity goals. |
| MAX11100ETE+ | 12-bit resolution, 500ksps, internal 4.096V reference, 2.7V–3.6V supply only - incompatible with 5V systems without level translation. | Higher resolution and speed benefit high-fidelity audio or vibration analysis; limited to low-voltage battery operation. | Choose for upgrade path requiring >10-bit ENOB; confirm system supply rail compatibility and validate REFADJ bypass capacitor values per layout guidelines. |
Compared with ADS7822U and MAX11100ETE+, the MAX1082ACUE+ uniquely balances 10-bit precision, 5V single-supply operation, and integrated reference in a compact TSSOP - making it optimal for commercial-grade portable instrumentation where supply simplicity and mid-tier accuracy are jointly critical.
Availability
MAX1082ACUE+ is available at Aetrix Electronics and suitable for portable data logging, medical instrumentation, and battery-powered test equipment requiring stable component supply with guaranteed commercial-temperature performance and RoHS-compliant packaging.
Supply support for MAX1082ACUE+ 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 designed for low-power, multi-channel data acquisition in space- and energy-constrained systems - emphasizing integration of reference, track/hold, and serial interface to reduce system-level complexity.
FAQ
What is the maximum sampling rate supported by the MAX1082ACUE+?
The MAX1082ACUE+ supports a maximum sampling rate of 400ksps, achieved with a 6.4MHz serial clock and 16-clock conversion cycle. This rate is guaranteed across the full 0°C to +70°C operating range and enables digitization of signals up to 200kHz full-linear bandwidth. Performance remains stable under specified supply (4.5V–5.5V) and load conditions per Maxim's 19-1690 Rev 2 datasheet.
Does the MAX1082ACUE+ require an external reference voltage?
No, the MAX1082ACUE+ includes an internal +2.500V reference with ±10mV initial accuracy and ±15ppm/°C temperature coefficient, eliminating the need for external reference components in most applications. An external reference (1V to VDD) may be used by disabling the internal buffer via REFADJ = VDD1 - but doing so forfeits the guaranteed 2.500V output and requires validation of external reference stability and noise performance.
How does the power-down functionality work on the MAX1082ACUE+?
The MAX1082ACUE+ offers four software-selectable power modes: normal (2.5mA), reduced power (1.3mA), fast power-down (0.9mA), and full power-down (2µA). Power mode is set via PD1/PD0 bits in the 8-bit control byte. In FULLPD mode, the internal reference and analog circuitry are disabled; the device automatically wakes up on CS or DIN activity with <1µs turn-on time - enabling efficient inter-conversion sleep in battery-powered systems.
Can the MAX1082ACUE+ interface directly with a TMS320 DSP?
Yes, the MAX1082ACUE+ features a dedicated SSTRB (serial strobe) output that pulses high for one SCLK period before the MSB decision - providing precise timing alignment for TMS320-family digital signal processors. The 4-wire serial interface (CS, SCLK, DIN, DOUT) is fully compatible with TMS320 McBSP protocols when configured for CPOL=0 and CPHA=0, requiring no external logic or level translation for 5V systems.
What are the absolute maximum ratings for analog input voltage on the MAX1082ACUE+?
The MAX1082ACUE+ analog inputs (CH0–CH3, COM) tolerate voltages from GND − 0.3V to VDD1 + 0.3V without damage, thanks to internal clamping diodes. However, for accurate conversions near full scale, inputs must stay within GND − 50mV to VDD1 + 50mV. Exceeding these limits risks introducing offset/gain errors; if input swings beyond ±50mV, input current must be limited to <2mA to prevent degradation of INL or DNL performance.
MAX1082ACUE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1082ACUE+ FAQ
1.How can I place an order for MAX1082ACUE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1082ACUE+ 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 MAX1082ACUE+ reliable?
The price and inventory of MAX1082ACUE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1082ACUE+ is usually 5 days.
3.What payment methods are accepted for MAX1082ACUE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1082ACUE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1082ACUE+?
MAX1082ACUE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1082ACUE+ 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 MAX1082ACUE+?
For technical support, including MAX1082ACUE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1082ACUE+ requirements.
6.How does Aetrix verify that MAX1082ACUE+ is sourced from the original manufacturer or authorized distributors?
All MAX1082ACUE+ 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 MAX1082ACUE+ meets industry standards.
7.What is the process for return or replacement of MAX1082ACUE+?
All MAX1082ACUE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1082ACUE+, 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 MAX1082ACUE+ part is unused and in its original packaging.
Return procedure for MAX1082ACUE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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