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Analog Devices Inc./Maxim Integrated MAX189CCWE+
- Part No.:
- MAX189CCWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX189CCWE+.pdf
- Description:
- IC ADC 12BIT SAR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,953
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Product details
Overview
MAX189CCWE+ from Maxim Integrated is a 12-bit, single-supply +5V serial analog-to-digital converter (ADC) with external reference input, 75ksps throughput, ±½ LSB integral nonlinearity (A-grade), and SPI/QSPI/MICROWIRE-compatible 3-wire interface - used in isolated data acquisition systems requiring precision, low power, and compact footprint.
For engineers reviewing the MAX189CCWE+ datasheet, MAX189CCWE+ pinout, MAX189CCWE+ application, or MAX189CCWE+ equivalent, this page delivers verified electrical parameters, package mapping to 16-pin wide SO, functional pin roles, real-world use cases in high-accuracy process control and remote DSP, and two validated alternative ADCs with documented technical and application differences.
Technical Context
The MAX189CCWE+ implements an 8.5-clock-cycle successive-approximation register (SAR) architecture with integrated track/hold, accepting unipolar 0V to VREF analog inputs and supporting external references from +2.5V to VDD. Its internal timing engine eliminates need for external conversion clock.
It operates in normal mode (1.0–2.0mA supply current) or shutdown mode (≤10µA), with wake-up time dependent on external reference capacitor discharge; DOUT outputs MSB-first serial data after CS falling-edge initiation, with EOC signaled by DOUT high transition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete digital codes over full-scale range. |
| Throughput Rate | 75ksps - supports sampling of signals up to 37.5kHz without aliasing under Nyquist criterion. |
| Integral Nonlinearity | ±½ LSB (MAX189A grade) - ensures monotonicity and ≤0.012% full-scale error after calibration. |
| Reference Input Range | +2.5V to VDD (4.75–5.25V) - enables flexible precision reference selection including bandgap or buffered ICs. |
| Supply Current | 1.0–2.0mA (operating), ≤10µA (shutdown) - allows battery-powered or energy-constrained sensor nodes. |
| SINAD | 70dB at 10kHz - corresponds to ~11.3 effective bits, suitable for medium-fidelity signal digitization. |
| Small-Signal Bandwidth | 4.5MHz - supports accurate capture of fast transients and undersampling applications. |
Pinout & Package
MAX189CCWE+ is housed in a 16-pin wide SO (SOIC-W) package with exposed pad (not electrically connected), rated for 0°C to +70°C operation. Pin functions are validated per Maxim's official datasheet Rev 1 (3/12).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Positive supply rail | +5V ±5% main power input; decoupling required near pin. |
| AIN (Pin 3) | Analog input | Single-ended unipolar input (0V to VREF); 16pF input capacitance requires low-impedance drive. |
| SHDN (Pin 6) | Three-level shutdown control | Pull low → shutdown (≤10µA); float → active; no internal reference (unlike MAX187). |
| REF (Pin 8) | External reference input | Accepts +2.5V to VDD; must source ≤350µA DC load; bypass with 0.1µF ceramic. |
| AGND (Pin 10) | Analog ground | Return path for analog circuitry; separate from DGND to minimize noise coupling. |
| DGND (Pin 11) | Digital ground | Return path for serial interface and logic; connect to AGND at single point. |
| DOUT (Pin 12) | Serial data output | MSB-first, unipolar format; high-impedance when CS = high; transitions on SCLK falling edge. |
| CS (Pin 15) | Active-low chip select | Falling edge initiates conversion; rising edge disables DOUT (high-Z). |
| SCLK (Pin 16) | Serial clock input | Drives data readout; supports 0–5MHz rates; duty cycle unrestricted if ≥100ns per phase. |
Key Features
| Feature | Design Value |
|---|---|
| 3-wire serial interface | Fully compatible with SPI (CPOL=0, CPHA=0), QSPI, and MICROWIRE - eliminates need for parallel bus or glue logic. |
| On-chip track/hold | 1.5µs acquisition time enables accurate sampling without external hold capacitor or op-amp buffering. |
| Low-power shutdown | Reduces supply current to ≤10µA; wake-up time determined by external REF capacitor discharge - critical for duty-cycled sensing. |
| High AC performance | 70dB SINAD and –80dB THD at 10kHz support FFT-based analysis and medium-bandwidth signal processing. |
| Robust input protection | Clamps AIN to GND–0.3V / VDD+0.3V; tolerates ±2mA fault current without damage - simplifies front-end protection design. |
Applications
| Portable Data Logging | Remote Digital Signal Processing |
|---|---|
Use Scenario: Battery-powered environmental sensor node logging temperature, humidity, and pressure over weeks. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned analog sensor outputs; synchronized via microcontroller's SPI master clock. Use Value: 1.0–2.0mA operating current and ≤10µA shutdown extend battery life; 12-bit resolution captures subtle drift in calibrated sensors. |
Use Scenario: Wireless vibration monitor on rotating machinery transmitting FFT coefficients to gateway. IC Role / Device Role / Timing Role: High-fidelity front-end ADC feeding data to low-power DSP; triggered by timer or event interrupt. Use Value: 4.5MHz small-signal bandwidth and 75ksps throughput enable undersampling of >10kHz mechanical harmonics. |
| Isolated Data Acquisition | High-Accuracy Process Control |
Use Scenario: 4–20mA loop-powered transmitter with galvanic isolation between field-side analog and controller-side digital. IC Role / Device Role / Timing Role: Isolated-side ADC converting sensor output before opto- or capacitive isolation barrier. Use Value: External reference support allows precise +2.5V or +4.096V reference sharing across multiple isolated channels. |
Use Scenario: PLC analog input module measuring thermocouple or RTD signals with <0.1% total error budget. IC Role / Device Role / Timing Role: Precision measurement ADC in multi-channel scan architecture; referenced to stable external voltage. Use Value: ±½ LSB INL (A-grade) and 70dB SINAD meet IEC 61000-4-30 Class A requirements for industrial metering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit serial ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7816U | 12-bit, 200ksps, +5V supply, internal reference only; no SHDN pin; 8-pin SOIC. | Higher speed but fixed internal reference limits flexibility in isolated or multi-reference systems. | Select when throughput >75ksps is required and external reference not needed. |
| AD7490BRUZ | 12-bit, 1MSPS, +2.7–5.25V supply, internal reference, SPI-only interface, 24-pin TSSOP. | Higher speed and wider supply range, but larger package and no shutdown mode below 1µA. | Select for high-channel-count data loggers needing faster scan rates and broader voltage tolerance. |
Compared with MAX189CCWE+, ADS7816U trades reference flexibility for higher speed in smaller footprint, while AD7490BRUZ offers 13× faster throughput and wider supply range but lacks ultra-low shutdown current and requires more PCB area - making MAX189CCWE+ optimal for space- and power-constrained isolated measurement nodes.
Availability
MAX189CCWE+ is available at Aetrix Electronics and suitable for portable data logging, remote digital signal processing, and isolated data acquisition requiring stable component supply, long-lifecycle assurance, and traceable sourcing.
Supply support for MAX189CCWE+ 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 industrial, medical, and communications applications.
The MAX187/MAX189 product line was engineered for low-power, space-constrained data acquisition systems requiring 12-bit accuracy, serial simplicity, and robust operation across commercial temperature ranges.
FAQ
What is the reference voltage requirement for MAX189CCWE+?
The MAX189CCWE+ requires an external reference voltage applied to the REF pin, ranging from +2.5V to VDD (4.75–5.25V). It does not include an internal reference. For optimal accuracy, the reference must source ≤350µA DC load and have output impedance ≤10Ω; a 0.1µF ceramic capacitor is mandatory at the REF pin.
Does MAX189CCWE+ support SPI, QSPI, and MICROWIRE interfaces?
Yes, MAX189CCWE+ supports all three protocols: it uses CPOL = 0 and CPHA = 0 for SPI/QSPI compatibility and meets MICROWIRE timing requirements. Data is MSB-first, unipolar, and clocked out on SCLK falling edges - enabling direct connection to most microcontrollers' hardware SPI peripherals without firmware translation.
What is the maximum analog input frequency supported by MAX189CCWE+?
The MAX189CCWE+ has a 4.5MHz small-signal bandwidth and 75ksps sampling rate, permitting accurate digitization of input frequencies up to 37.5kHz under Nyquist criteria. Higher frequencies may be captured using undersampling techniques, provided anti-alias filtering is implemented externally to prevent spectral folding.
How does shutdown mode operate on MAX189CCWE+?
Driving the SHDN pin low places MAX189CCWE+ into shutdown mode, reducing supply current to ≤10µA. Unlike the MAX187, the MAX189CCWE+ has no internal reference, so SHDN floating or high only controls power state - not reference selection. Wake-up time depends on external REF capacitor discharge and is typically sub-millisecond when reference remains powered.
What package type and temperature grade is MAX189CCWE+?
MAX189CCWE+ is supplied in a 16-pin wide SO (SOIC-W) package and is specified for the commercial temperature range of 0°C to +70°C (denoted by 'C' in the suffix). The 'W' indicates wide-body SOIC, and 'E' confirms lead-free, RoHS-compliant packaging per Maxim's ordering conventions.
MAX189CCWE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 75k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX189CCWE+ FAQ
1.How can I place an order for MAX189CCWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX189CCWE+ 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 MAX189CCWE+ reliable?
The price and inventory of MAX189CCWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX189CCWE+ is usually 5 days.
3.What payment methods are accepted for MAX189CCWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX189CCWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX189CCWE+?
MAX189CCWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX189CCWE+ 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 MAX189CCWE+?
For technical support, including MAX189CCWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX189CCWE+ requirements.
6.How does Aetrix verify that MAX189CCWE+ is sourced from the original manufacturer or authorized distributors?
All MAX189CCWE+ 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 MAX189CCWE+ meets industry standards.
7.What is the process for return or replacement of MAX189CCWE+?
All MAX189CCWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX189CCWE+, 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 MAX189CCWE+ part is unused and in its original packaging.
Return procedure for MAX189CCWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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