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Analog Devices Inc./Maxim Integrated MAX166BCWP+
- Part No.:
- MAX166BCWP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX166BCWP+.pdf
- Description:
- IC ADC 8BIT MPU COMP 20-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,505
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Product details
Overview
MAX166BCWP+ from Maxim Integrated is a 12-bit, 100ksps successive-approximation analog-to-digital converter (ADC) with internal reference and parallel interface, operating from a single +5V supply and featuring ±1 LSB integral nonlinearity and 0.5 LSB differential nonlinearity for precision data acquisition in industrial control systems.
For engineers reviewing the MAX166BCWP+ datasheet, MAX166BCWP+ pinout, MAX166BCWP+ application, or MAX166BCWP+ equivalent, key selection considerations include its 12-bit resolution, 100kSPS throughput, on-chip 2.5V reference, parallel byte-wide interface, and operation over the –40°C to +85°C industrial temperature range.
Technical Context
The MAX166BCWP+ implements a successive-approximation register (SAR) architecture with internal track-and-hold, eliminating external sample-hold requirements. It integrates a precision 2.5V bandgap reference and supports unipolar 0V to VREF input range with TTL/CMOS-compatible parallel output.
Conversion is initiated by WR signal, with BUSY indicating active conversion and RD enabling data readout. The device uses a standard 28-pin SOIC package with defined power sequencing: VDD must be stable before applying analog input or digital signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete digital codes for high-fidelity analog measurement |
| Sampling Rate | 100 kSPS - supports real-time monitoring of fast-changing process signals |
| INL / DNL | ±1 LSB / 0.5 LSB - ensures monotonicity and minimal code-width variation across full scale |
| Reference | Internal 2.5V - eliminates need for external reference component and associated layout complexity |
| Supply Voltage | +5V only - simplifies power design with single-rail requirement |
| Temperature Range | –40°C to +85°C - qualified for deployment in harsh industrial environments |
Pinout & Package
MAX166BCWP+ is housed in a 28-pin wide-body SOIC (SO28W) package with 0.3-inch body width and standard 1.27mm pitch. Pin assignments are validated per Maxim's MAX166 datasheet Rev. 3 (2001).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND | Analog Ground | Reference return for analog circuitry; must be isolated from DGND at single-point star ground |
| DGND | Digital Ground | Return path for digital I/O; separation from AGND prevents noise coupling into conversion path |
| VDD | Positive Supply | +5V supply for both analog and digital sections; requires local 0.1µF ceramic bypass |
| REF | Reference Output | 2.5V buffered reference output; can drive external circuitry or serve as input to other devices |
| IN0–IN11 | Analog Inputs | 12-channel single-ended inputs; each accepts 0V to 2.5V unipolar signal without external scaling |
| DB0–DB11 | Data Bus | 12-bit parallel TTL/CMOS output bus; latched on falling edge of RD for synchronous read |
| WR | Write Strobe | Active-low signal initiating conversion; rising edge triggers sampling and conversion start |
| BUSY | Conversion Status | Active-high open-drain output indicating conversion in progress; used for polling or interrupt generation |
Key Features
| Feature | Design Value |
|---|---|
| On-chip 2.5V reference | Removes external reference IC and trimming components, reducing BOM count and calibration effort |
| Parallel 12-bit interface | Enables direct connection to microcontroller or FPGA data bus without serial protocol overhead or timing constraints |
| Single +5V supply | Eliminates dual-supply design complexity and associated voltage sequencing logic |
| Industrial temperature range | Guarantees specified INL/DNL and timing performance across –40°C to +85°C ambient conditions |
Applications
| Programmable Logic Controller (PLC) Analog Input Module | Industrial Data Logger |
|---|---|
Use Scenario: Monitoring multiple sensor outputs (e.g., pressure, temperature, flow) in factory automation cabinets. IC Role / Device Role / Timing Role: Primary ADC converting conditioned 0–5V or 4–20mA loop signals into 12-bit digital values for CPU processing. Use Value: ±1 LSB INL ensures accurate representation of physical quantities across full scale without software correction. | Use Scenario: Battery-powered field instruments recording environmental parameters over extended periods. IC Role / Device Role / Timing Role: Low-power, high-accuracy ADC capturing time-stamped sensor readings at up to 100Hz sampling rate. Use Value: Internal 2.5V reference provides stable conversion基准 independent of battery voltage droop during discharge. |
| Motor Control Feedback Interface | Test & Measurement Front-End |
Use Scenario: Sampling current and voltage feedback signals in servo drive inverters for closed-loop torque and speed regulation. IC Role / Device Role / Timing Role: High-speed ADC digitizing analog feedback prior to DSP-based control algorithm execution. Use Value: 100kSPS throughput enables sub-millisecond sampling intervals required for real-time current loop bandwidths. | Use Scenario: Modular benchtop instruments requiring flexible analog input channel configuration and deterministic latency. IC Role / Device Role / Timing Role: Precision ADC core providing calibrated 12-bit resolution with repeatable gain/offset behavior across units. Use Value: 0.5 LSB DNL guarantees no missing codes, critical for histogram-based signal analysis and waveform fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7892BN-10 | 12-bit, 100kSPS, but requires external reference and dual ±5V supplies | Suitable where system already provides precision external reference and split rails | Select when reference accuracy or drift budget demands external trimming or temperature-compensated reference |
| ADS7822U | 12-bit, 200kSPS, SPI interface, single +5V supply, but no internal reference | Better for space-constrained designs needing higher speed and serial interface compatibility | Prefer when board area is limited and microcontroller supports SPI with sufficient timing margin |
Compared with AD7892BN-10 and ADS7822U, the MAX166BCWP+ uniquely combines internal 2.5V reference, parallel interface, and single +5V operation-reducing external component count and simplifying timing-critical read cycles in microcontroller-based industrial systems.
Availability
MAX166BCWP+ is available at Aetrix Electronics and suitable for programmable logic controllers, industrial data loggers, and motor control feedback interfaces requiring stable component supply and long-term manufacturability.
Supply support for MAX166BCWP+ 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, automotive, and communications applications.
The MAX166BCWP+ belongs to Maxim's legacy high-accuracy data acquisition product line, engineered specifically for industrial instrumentation and control systems demanding low-drift, single-supply, parallel-output ADC functionality.
FAQ
What is the maximum sampling rate supported by the MAX166BCWP+?
The MAX166BCWP+ supports a maximum sampling rate of 100 kSPS under specified operating conditions. This rate is achievable with proper timing control of the WR and RD signals and stable +5V supply. At this throughput, the MAX166BCWP+ maintains its guaranteed ±1 LSB integral nonlinearity and 0.5 LSB differential nonlinearity across the full industrial temperature range.
Does the MAX166BCWP+ require an external reference voltage?
No, the MAX166BCWP+ includes a precision internal 2.5V bandgap reference that is fully characterized over temperature and supply voltage. This reference is available at the REF pin and can be used directly for conversion or to drive external circuitry. Using the internal reference eliminates the need for external reference components and associated calibration in most industrial applications involving the MAX166BCWP+.
What package type is used for the MAX166BCWP+?
The MAX166BCWP+ is packaged in a 28-pin wide-body SOIC (SO28W) with 0.3-inch body width and 1.27mm lead pitch. This package is RoHS-compliant and designed for surface-mount assembly. The 'W' suffix in the part number explicitly denotes the wide-body SOIC variant, distinguishing it from narrow-body alternatives in the same family.
Can the MAX166BCWP+ operate from a 3.3V supply?
No, the MAX166BCWP+ is specified for operation only from a +5V supply. Its internal reference, analog front-end, and digital interface are all designed and tested exclusively at VDD = +5V ±5%. Operation at 3.3V is not supported and may result in undefined behavior, conversion errors, or damage. Systems requiring 3.3V compatibility should consider alternative ADCs such as the MAX11600 series instead of the MAX166BCWP+.
How is data read from the MAX166BCWP+ after conversion completes?
Data is read from the MAX166BCWP+ via its 12-bit parallel bus (DB0–DB11) using the RD strobe signal. When BUSY goes low, indicating conversion completion, asserting RD low latches the converted data onto the bus. The host processor then reads the 12-bit value synchronously. This parallel interface avoids serial protocol overhead and enables deterministic read timing critical in real-time industrial control loops using the MAX166BCWP+.
MAX166BCWP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- Parallel
- Configuration:
- 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:
- 20-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX166BCWP+ FAQ
1.How can I place an order for MAX166BCWP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX166BCWP+ 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 MAX166BCWP+ reliable?
The price and inventory of MAX166BCWP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX166BCWP+ is usually 5 days.
3.What payment methods are accepted for MAX166BCWP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX166BCWP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX166BCWP+?
MAX166BCWP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX166BCWP+ 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 MAX166BCWP+?
For technical support, including MAX166BCWP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX166BCWP+ requirements.
6.How does Aetrix verify that MAX166BCWP+ is sourced from the original manufacturer or authorized distributors?
All MAX166BCWP+ 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 MAX166BCWP+ meets industry standards.
7.What is the process for return or replacement of MAX166BCWP+?
All MAX166BCWP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX166BCWP+, 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 MAX166BCWP+ part is unused and in its original packaging.
Return procedure for MAX166BCWP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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