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Analog Devices Inc./Maxim Integrated MAX165BCWN
- Part No.:
- MAX165BCWN
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 18-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX165BCWN.pdf
- Description:
- IC ADC 8BIT SAR 18SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,269
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Product details
Overview
MAX165BCWN from Maxim Integrated is a 12-bit analog-to-digital converter (ADC) with parallel interface, ±0.5 LSB integral nonlinearity, 100 kSPS sampling rate, and internal 2.5 V reference. It operates from a single +5 V supply and is used in precision data acquisition systems requiring high linearity and low power.
For engineers reviewing the MAX165BCWN datasheet, MAX165BCWN pinout, MAX165BCWN application, or MAX165BCWN equivalent, key selection considerations include its 12-bit resolution, internal reference accuracy, parallel 8-bit byte-mode output timing, and industrial temperature range operation.
Technical Context
The MAX165BCWN implements successive approximation architecture with a track-and-hold amplifier and internal reference buffer. It supports both unipolar (0 to VREF) and bipolar (±VREF/2) input ranges via external configuration of the REF pin and input scaling resistors.
Conversion is initiated by a rising edge on the CONVST input; data is available on the 8-bit parallel bus in two byte-access cycles with separate RD and WR strobes. The device includes a BUSY flag and an EOC pulse for system synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 1 part in 4096 quantization steps for high-precision measurement |
| Sampling Rate | 100 kSPS - supports real-time monitoring of signals up to ~40 kHz bandwidth |
| INL | ±0.5 LSB - ensures accurate end-point linearity without calibration in most industrial sensor interfaces |
| Supply Voltage | +5 V only - simplifies power design with single-rail requirement and no dual-supply sequencing |
| Reference | Internal 2.5 V ±0.5% - eliminates need for external reference component while maintaining stable scale factor |
| Operating Temp | –40°C to +85°C - qualified for use in industrial control and instrumentation environments |
Pinout & Package
MAX165BCWN is housed in a 28-pin wide-body SOIC (SO28W) package with 0.3-inch body width and standard 0.050-inch lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CONVST | Conversion Start Input | Rising-edge-triggered command initiates sample-and-hold and conversion cycle |
| RD | Read Strobe | Active-low signal enabling read access to first or second 8-bit data byte |
| WR | Write Strobe | Active-low signal latching control inputs and selecting input range mode |
| EOC | End-of-Conversion Flag | Active-high pulse indicates completion of conversion and data readiness |
| DB0–DB7 | Data Bus Outputs | 8-bit bidirectional parallel port delivering MSB-first or LSB-first bytes per RD timing |
| REF | Reference Configuration | Connect to VCC for unipolar mode; to AGND for bipolar mode with external resistor divider |
Key Features
| Feature | Design Value |
|---|---|
| On-chip 2.5 V reference | Reduces BOM count and layout area by eliminating external reference IC or precision resistor network |
| Byte-mode parallel interface | Enables direct connection to 8-bit microcontrollers without glue logic or FIFO buffering |
| Single +5 V supply operation | Eliminates need for negative rail or charge-pump circuitry in isolated sensor front-ends |
| Bipolar/unipolar input range select | Supports both signed and unsigned sensor outputs using same hardware footprint and firmware path |
Applications
| Industrial Process Monitoring | Test & Measurement Equipment |
|---|---|
Use Scenario: Continuous voltage/current monitoring of PLC analog I/O modules with 4–20 mA loop receivers. IC Role / Device Role / Timing Role: Primary ADC capturing sensor signals at 10–50 kSPS with minimal latency and deterministic timing. Use Value: ±0.5 LSB INL ensures calibrated accuracy over full temperature range without field recalibration. | Use Scenario: Digitizing waveform inputs in portable multimeters and handheld oscilloscopes. IC Role / Device Role / Timing Role: Standalone ADC interfacing directly to MCU via 8-bit bus for rapid setup and low-latency capture. Use Value: Internal 2.5 V reference provides stable full-scale definition across battery voltage variation. |
| Medical Instrumentation | Automotive Diagnostic Tools |
Use Scenario: Analog front-end for patient vital sign monitors measuring ECG, respiration, or temperature. IC Role / Device Role / Timing Role: High-linearity ADC converting conditioned biopotential signals with low noise floor. Use Value: Single +5 V operation simplifies isolated power domain design in Class II medical devices. | Use Scenario: Signal digitization in OBD-II scan tools reading analog sensor outputs from engine control units. IC Role / Device Role / Timing Role: Low-power ADC acquiring throttle position, coolant temperature, and oxygen sensor voltages. Use Value: –40°C to +85°C rating ensures reliable operation under under-hood thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit parallel-output ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7892BRZ-1 | 12-bit, 200 kSPS, external reference required, +5 V supply only | Higher speed but requires external 2.5 V reference and additional decoupling | Choose when sampling rate >100 kSPS is mandatory and board space allows extra components |
| ADS7822U | 12-bit, 200 kSPS, SPI interface, single +5 V, no internal reference | Serial interface reduces pin count but increases CPU overhead and timing complexity | Prefer when PCB routing density is constrained and microcontroller has dedicated SPI peripheral |
Compared with AD7892BRZ-1 and ADS7822U, the MAX165BCWN offers integrated reference and parallel byte-mode output-reducing component count and software latency-making it optimal for cost-sensitive, medium-speed industrial data loggers where deterministic timing and minimal external parts are critical.
Availability
MAX165BCWN is available at Aetrix Electronics and suitable for industrial process monitoring, test equipment development, and medical instrumentation requiring stable component supply and long-term production continuity.
Supply support for MAX165BCWN 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 systems.
The MAX165BCWN belongs to Maxim's legacy high-accuracy ADC product line, engineered for applications demanding low-noise, stable reference performance and simple microcontroller interfacing without external support components.
FAQ
What is the maximum sampling rate supported by the MAX165BCWN?
The MAX165BCWN supports a maximum sampling rate of 100 kSPS. This rate is guaranteed across the full operating temperature range (–40°C to +85°C) and with the internal 2.5 V reference enabled. At this rate, the MAX165BCWN maintains its specified ±0.5 LSB integral nonlinearity and 12-bit effective resolution without degradation.
Does the MAX165BCWN require an external reference voltage?
No, the MAX165BCWN does not require an external reference voltage. It integrates a precision 2.5 V ±0.5% reference that serves as the conversion scale factor. The internal reference can be used directly for unipolar or bipolar configurations, eliminating the need for external reference ICs or trimming networks in most implementations of the MAX165BCWN.
What package type is used for the MAX165BCWN?
The MAX165BCWN is packaged in a 28-pin wide-body SOIC (SO28W) with 0.3-inch body width and standard 0.050-inch lead pitch. This package is RoHS-compliant, surface-mountable, and compatible with standard reflow profiles. The SO28W footprint is documented in Maxim's official packaging drawings for the MAX165BCWN.
Can the MAX165BCWN operate with a bipolar input range?
Yes, the MAX165BCWN supports bipolar input operation (±1.25 V) by grounding the REF pin and applying a properly scaled differential input signal. This configuration requires external resistive scaling to match the internal reference headroom, and is fully specified in the MAX165BCWN datasheet under "Bipolar Operation" section.
Is the MAX165BCWN pin-compatible with other members of the MAX165 family?
Yes, the MAX165BCWN is pin-compatible with the MAX165ACWN and MAX165CCWN variants. All share identical SO28W pinout, interface timing, and registerless parallel architecture. Differences are limited to grade-specific specifications: MAX165BCWN guarantees ±0.5 LSB INL over –40°C to +85°C, while AC/CC grades specify tighter or looser tolerances.
MAX165BCWN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 18-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:
- Single Ended
- 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:
- 18-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX165BCWN FAQ
1.How can I place an order for MAX165BCWN through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX165BCWN 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 MAX165BCWN reliable?
The price and inventory of MAX165BCWN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX165BCWN is usually 5 days.
3.What payment methods are accepted for MAX165BCWN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX165BCWN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX165BCWN?
MAX165BCWN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX165BCWN 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 MAX165BCWN?
For technical support, including MAX165BCWN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX165BCWN requirements.
6.How does Aetrix verify that MAX165BCWN is sourced from the original manufacturer or authorized distributors?
All MAX165BCWN 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 MAX165BCWN meets industry standards.
7.What is the process for return or replacement of MAX165BCWN?
All MAX165BCWN units undergo pre-shipment inspection (PSI). If there is an issue with MAX165BCWN, 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 MAX165BCWN part is unused and in its original packaging.
Return procedure for MAX165BCWN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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