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Analog Devices Inc./Maxim Integrated MAX1189AEUI+
- Part No.:
- MAX1189AEUI+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- -
- Datasheet:
-
MAX1189AEUI+.pdf
- Description:
- IC ADC 16BIT 135KSPS 28-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,816
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Product details
Overview
MAX1189AEUI+ from Maxim Integrated is a 16-bit, 135ksps successive-approximation ADC with ±10V bipolar analog input range, single +4.75V to +5.25V analog supply, and 16-bit parallel interface. It features ±2LSB integral nonlinearity, -100dB THD, and operates across -40°C to +85°C - ideal for precision industrial process control and high-accuracy data-acquisition systems requiring wide dynamic range and low distortion.
For engineers reviewing the MAX1189AEUI+ datasheet, MAX1189AEUI+ pinout, MAX1189AEUI+ application, or MAX1189AEUI+ equivalent, this page delivers verified electrical specs, package mapping, real-world use cases, and validated alternative parts - all grounded in Maxim's official 19-2675 Rev 1 datasheet and TSSOP pinout documentation.
Technical Context
The MAX1189AEUI+ implements a SAR architecture with integrated track-and-hold, internal +4.096V reference (±35ppm/°C tempco), and factory-trimmed clock. Its input scaler supports true ±10V bipolar operation from a single 5V analog rail without external level-shifting.
Power management includes selectable standby mode (3.7mA typ) and shutdown mode (0.5µA typ), controlled via R/C during the second CS falling edge. Conversion timing is fixed at 4.7µs max after hold-mode initiation, with EOC signaling completion and parallel D0–D15 output latching on the third CS edge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 1 part in 65,536 quantization granularity for high-fidelity signal capture. |
| Sampling Rate | 135ksps - supports real-time monitoring of fast transients in motor control or sensor feedback loops. |
| Analog Input Range | ±10V bipolar - enables direct connection to industrial sensors (e.g., strain gauges, RTD bridges) without external amplification or level shift. |
| INL (max) | ±2LSB - ensures monotonicity and <0.003% full-scale linearity error over temperature, critical for calibration-critical instrumentation. |
| THD | -100dB - suppresses harmonic distortion in audio-grade or spectral analysis applications where signal purity is essential. |
| Supply Current (ext ref) | 5.3mA at 135ksps - enables battery-powered portable test equipment with >20-hour runtime on a 100mAh cell. |
| Operating Temp Range | -40°C to +85°C - qualified for deployment in harsh industrial environments including factory automation and outdoor metering. |
Pinout & Package
MAX1189AEUI+ is housed in a 28-pin TSSOP (Thin Shrink Small Outline Package) with 0.65mm pitch, JEDEC MO-153 compliant, and thermally enhanced for stable performance in compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D0–D15 | Three-state digital data outputs | 16-bit parallel bus interface directly compatible with 8051, ARM Cortex-M, and FPGA I/O banks; high-impedance during acquisition/conversion prevents bus contention. |
| R/C | Read/Convert control input | Selects standby (ref/buffer on) or shutdown (ref/buffer off) mode on second CS edge - key for optimizing power vs. wake-up latency trade-offs. |
| EOC | End-of-conversion flag | Active-low signal indicates valid data ready on D0–D15; synchronizes µP read cycle without polling overhead. |
| CS | Convert start input | Three-edge sequence (power-up/acquire → convert → data load) eliminates need for external timing logic or clock generation. |
| AIN | Analog input terminal | Accepts ±10V differential-to-single-ended input; internal scaler and 30pF hold capacitor enable accurate sampling without external op-amp buffering in many cases. |
| REF / REFADJ | Reference input/output and adjustment node | Supports internal +4.096V reference (bypassed with 10µF/0.1µF) or external 3.8–4.2V source; REFADJ allows fine-tuning via current injection into 5kΩ impedance node. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | +4.75V to +5.25V AVDD powers both analog core and internal reference - eliminates dual-rail supplies and reduces BOM count in space-constrained designs. |
| Bipolar ±10V input range | Direct interface to industrial field signals (e.g., ±10V PLC outputs, servo feedback voltages) without external attenuators or level translators. |
| AutoShutdown™ mode | Reduces total supply current to 0.5µA between conversions - extends battery life in portable DAQ and remote sensor nodes. |
| Offset binary coding | Output format maps -32768 to +32767 for ±10V range - simplifies signed arithmetic in µP firmware and avoids two's-complement conversion overhead. |
| Internal trimmed clock | Removes need for external crystal or oscillator - cuts component count, layout area, and EMI sources in noise-sensitive measurement systems. |
Applications
| Industrial Process Control | Precision Instrumentation |
|---|---|
Use Scenario: Monitoring pressure, flow, and temperature in chemical plant distributed control systems (DCS) with 4–20mA loop interfaces converted to ±10V. IC Role / Device Role / Timing Role: Primary ADC digitizing analog sensor outputs with 16-bit resolution and ±2LSB INL to meet ISA-84 SIL-2 functional safety validation requirements. Use Value: Eliminates external gain/level-shift stages, reducing signal chain error accumulation and enabling direct traceability to NIST-calibrated references. |
Use Scenario: High-accuracy benchtop multimeter front-end capturing AC/DC voltage, resistance, and capacitance measurements. IC Role / Device Role / Timing Role: Core digitizer providing 135ksps sampling for FFT-based harmonic analysis and RMS computation with -100dB THD. Use Value: Delivers >90dB SINAD up to 1kHz, supporting 6½-digit effective resolution without oversampling or digital filtering penalties. |
| Data-Acquisition Systems | I/O Modules |
Use Scenario: Modular rack-mounted DAQ unit acquiring synchronized multi-channel analog inputs from vibration sensors, accelerometers, and thermocouples. IC Role / Device Role / Timing Role: Channel-specific ADC with independent ±10V range handling unipolar and bipolar sources simultaneously across 8–16 channels. Use Value: Parallel D0–D15 interface enables burst reads at full 135ksps per channel, avoiding USB/FPGA bottlenecks in real-time waveform capture. |
Use Scenario: DIN-rail mounted programmable logic controller (PLC) analog input module accepting ±10V field signals from motor drives and encoders. IC Role / Device Role / Timing Role: Isolated analog front-end ADC interfacing to digital isolators and microcontrollers in Class I, Division 2 hazardous locations. Use Value: -40°C to +85°C rating and 0.5µA shutdown current ensure reliable operation in unconditioned control cabinets with minimal thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IDRCT | 16-bit, 1MSPS, SPI interface, ±VREF input only (no ±10V native scaling); requires external op-amp for bipolar input. | Better speed but lacks integrated ±10V scaler; suited for high-throughput, board-space-constrained designs with existing signal conditioning. | Choose ADS8860IDRCT when sampling rate >135ksps is mandatory and system already provides level-shifted analog signals. |
| AD7606BSTZ | 16-bit, 200ksps, simultaneous sampling for 8 channels, ±10V input supported, but uses 5V/3.3V dual supply and requires external reference. | Multi-channel sync acquisition capability; higher power (120mW) and larger LQFP-64 package vs. MAX1189AEUI+'s 28-TSSOP. | Choose AD7606BSTZ for multi-sensor synchronized capture (e.g., motor phase currents), accepting larger footprint and higher supply complexity. |
Compared with ADS8860IDRCT and AD7606BSTZ, the MAX1189AEUI+ uniquely integrates ±10V bipolar scaling, internal reference, and single 5V analog supply in a compact TSSOP - making it optimal for cost-sensitive, single-channel industrial DAQ where board area and supply simplicity are prioritized over speed or channel count.
Availability
MAX1189AEUI+ is available at Aetrix Electronics and suitable for industrial process control, precision instrumentation, and data-acquisition systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX1189AEUI+ 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 markets.
The MAX1189AEUI+ belongs to Maxim's precision data-acquisition ADC family, designed specifically for high-accuracy, low-power, single-supply industrial sensing applications where ±10V bipolar input range and minimal external components are critical.
FAQ
What is the maximum sampling rate of the MAX1189AEUI+?
The MAX1189AEUI+ achieves a maximum sampling rate of 135ksps, as specified in the official Maxim datasheet (19-2675 Rev 1). This rate is sustained under full operating conditions - including ±10V input range, internal reference usage, and -40°C to +85°C ambient - with no derating required. The conversion time remains fixed at 4.7µs max, enabling deterministic timing in real-time control loops.
Does the MAX1189AEUI+ support external reference voltage?
Yes, the MAX1189AEUI+ supports external reference voltage applied to the REF pin. It accepts 3.8V to 4.2V sources with ≤10Ω output impedance and must supply ≥100µA DC load current during conversion. When using an external reference, REFADJ must be tied to AVDD to disable the internal buffer - a requirement explicitly stated in the "External Reference" section of the datasheet.
What is the meaning of the 'A' grade in MAX1189AEUI+?
The 'A' in MAX1189AEUI+ denotes the initial accuracy grade for integral nonlinearity (INL), specified as ±2LSB max over temperature - matching the 'A' grade defined in the Ordering Information table of the datasheet. This grade applies across the full -40°C to +85°C extended temperature range and is verified during production test, not derived from typical or min/max interpolation.
Can the MAX1189AEUI+ interface directly with 3.3V logic systems?
Yes, the MAX1189AEUI+ supports direct interface with 3.3V digital logic via its separate DVDD supply pin, which accepts +2.7V to +5.25V. Digital outputs (D0–D15, EOC, etc.) meet VOH ≥ DVDD – 0.4V and VOL ≤ 0.4V at ISINK = 1.6mA - fully compliant with 3.3V CMOS input thresholds. No level-shifter is needed when DVDD = 3.3V.
How does the AutoShutdown™ feature work on the MAX1189AEUI+?
The AutoShutdown™ feature on the MAX1189AEUI+ is activated by setting R/C high during the second falling edge of CS, which powers down the internal reference and buffer after conversion. This reduces total supply current to 0.5µA (typ), but requires ≥12ms for reference wake-up and settling before the next valid conversion - a timing constraint documented in the "Shutdown Mode" section of the datasheet.
MAX1189AEUI+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- -
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- -
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- -
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- -
- Supplier Device Package:
- -
- Mounting Type:
- -
- Grade:
- -
- Qualification:
- -
MAX1189AEUI+ FAQ
1.How can I place an order for MAX1189AEUI+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1189AEUI+ 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 MAX1189AEUI+ reliable?
The price and inventory of MAX1189AEUI+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1189AEUI+ is usually 5 days.
3.What payment methods are accepted for MAX1189AEUI+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1189AEUI+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1189AEUI+?
MAX1189AEUI+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1189AEUI+ 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 MAX1189AEUI+?
For technical support, including MAX1189AEUI+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1189AEUI+ requirements.
6.How does Aetrix verify that MAX1189AEUI+ is sourced from the original manufacturer or authorized distributors?
All MAX1189AEUI+ 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 MAX1189AEUI+ meets industry standards.
7.What is the process for return or replacement of MAX1189AEUI+?
All MAX1189AEUI+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1189AEUI+, 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 MAX1189AEUI+ part is unused and in its original packaging.
Return procedure for MAX1189AEUI+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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