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Analog Devices Inc./Maxim Integrated MAX165BEWN+
- Part No.:
- MAX165BEWN+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 18-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX165BEWN+.pdf
- Description:
- IC ADC 8BIT SAR 18SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,921
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Product details
Overview
MAX165BEWN+ from Maxim Integrated is a 12-bit, 100ksps successive-approximation analog-to-digital converter (SAR ADC) with internal reference and parallel interface in a 24-pin SO package. It features ±1 LSB integral nonlinearity, 70dB SNR, and operates from a single +5V supply. It is used in data acquisition systems requiring medium-speed precision conversion.
For engineers reviewing the MAX165BEWN+ datasheet, MAX165BEWN+ pinout, MAX165BEWN+ application, or MAX165BEWN+ equivalent, key selection considerations include sampling rate, reference integration, parallel interface timing, DC accuracy, and SO-24 thermal performance in industrial DAQ environments.
Technical Context
The MAX165BEWN+ implements a SAR architecture with a built-in 4.096V precision bandgap reference and on-chip clock generator. Conversion is initiated by WR signal, with BUSY indicating active conversion and RD enabling data readout.
It supports CMOS-compatible parallel output with byte-wide access (high/low byte strobes), requires no external clock for basic operation, and maintains monotonicity over its full temperature range of –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 1 part in 4096 quantization steps for medium-precision measurement systems |
| Sampling Rate | 100 kSPS - supports real-time capture of signals up to ~40 kHz per Nyquist criterion |
| INL | ±1 LSB - ensures linearity error remains within one least-significant bit across full scale |
| SNR | 70 dB - enables effective resolution of ~11.3 bits in noise-limited applications |
| Reference | Internal 4.096 V - eliminates need for external reference component and associated layout area |
| Supply Voltage | +5V only - simplifies power design with single-rail requirement and no dual-supply sequencing |
| Operating Temp | –40°C to +85°C - qualified for industrial ambient environments without derating |
Pinout & Package
MAX165BEWN+ is housed in a 24-pin wide-body SOIC (SO-24W) package with standard 0.3-inch body width and 0.025-inch lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND | Analog Ground | Reference return for analog input path; must be isolated from DGND at single-point star ground |
| DGND | Digital Ground | Return for parallel bus and control logic; separation from AGND reduces digital noise coupling |
| VDD | +5V Supply | Single positive supply powering both analog and digital sections |
| REF | Reference Output | Provides 4.096 V reference voltage; can drive external circuitry with ≤1 mA load |
| IN+ | Analog Input (+) | Differential input terminal; accepts 0V to VREF unipolar or ±VREF bipolar configurations |
| WR | Write Strobe | Active-low signal initiating conversion; edge-triggered on falling edge |
| BUSY | Conversion Status | Active-high open-drain output indicating conversion in progress |
| RD | Read Strobe | Active-low signal enabling parallel data output after conversion completion |
| D0–D7 | Data Bus (Low Byte) | Lower 8 bits of 12-bit result; latched on RD falling edge |
| D8–D11 | Data Bus (High Nibble) | Upper 4 bits output on D0–D3 when HBEN asserted; requires byte-handling logic |
Key Features
| Feature | Design Value |
|---|---|
| On-chip 4.096V reference | Removes external reference IC and trimming components, reducing BOM count and calibration complexity |
| Parallel 8-bit + nibble interface | Enables fast host CPU readout using standard microcontroller I/O ports without serial protocol overhead |
| Internal clock generator | Eliminates need for external crystal or clock source, simplifying system timing design |
| ±1 LSB INL over temperature | Guarantees consistent linearity without recalibration across –40°C to +85°C operating range |
| CMOS-compatible outputs | Interfaces directly with 5V TTL/CMOS logic families without level-shifting circuitry |
Applications
| Industrial Process Monitoring | Test & Measurement Equipment |
|---|---|
Use Scenario: Continuous monitoring of pressure, temperature, and flow sensor outputs in PLC-based control cabinets. IC Role / Device Role / Timing Role: Precision digitizer converting conditioned analog sensor signals into 12-bit digital words for real-time control loop execution. Use Value: ±1 LSB INL and internal reference ensure stable calibration over time and temperature without field recalibration. | Use Scenario: Embedded digitization stage in portable multimeters and automated test fixtures. IC Role / Device Role / Timing Role: Medium-speed ADC capturing waveform snapshots and DC measurements with minimal external support components. Use Value: Parallel interface and internal clock allow rapid integration with 8-bit microcontrollers, shortening firmware development cycle. |
| Motor Control Feedback | Power Supply Monitoring |
Use Scenario: Sampling current-sense amplifier outputs in closed-loop servo drives for torque and speed regulation. IC Role / Device Role / Timing Role: High-linearity ADC providing accurate current feedback to PWM controllers with deterministic latency. Use Value: 100 kSPS sampling rate supports current loop update rates up to 25 kHz while maintaining resolution margin. | Use Scenario: Real-time monitoring of rail voltages and output currents in programmable bench power supplies. IC Role / Device Role / Timing Role: System monitor ADC feeding voltage/current telemetry to host MCU via parallel bus. Use Value: Internal 4.096V reference enables direct ratiometric measurement against supply rails without external scaling resistors. |
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, 100 kSPS, but uses external reference and requires external clock; SO-24 package | Lacks integrated reference and clock, increasing BOM and layout complexity | Choose when external reference flexibility or multi-voltage reference support is required |
| ADS7822U | 12-bit, 200 kSPS, SPI interface, MSOP-8 package; no internal reference | Serial interface reduces pin count but increases software overhead; smaller package limits thermal mass | Prefer for space-constrained designs where microcontroller SPI resources are available |
Compared with AD7892BN-10 and ADS7822U, the MAX165BEWN+ offers lowest system-level integration for industrial DAQ due to its self-contained reference, clock, and parallel interface-reducing component count, PCB area, and firmware complexity without sacrificing 12-bit accuracy or 100 kSPS throughput.
Availability
MAX165BEWN+ is available at Aetrix Electronics and suitable for industrial process monitoring, test equipment, and motor control systems requiring stable component supply and long-term manufacturability.
Supply support for MAX165BEWN+ 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 MAX165BEWN+ belongs to Maxim's legacy high-accuracy data acquisition ADC family, engineered for industrial systems demanding reliable, low-component-count digitization without external support circuitry.
FAQ
What is the reference voltage specification for the MAX165BEWN+?
The MAX165BEWN+ integrates a precision 4.096V bandgap reference with ±0.5% initial accuracy and 25 ppm/°C temperature drift. This reference serves both as the ADC's conversion基准 and as a stable output (pin REF) capable of sourcing up to 1 mA. Its stability eliminates the need for external reference components in most industrial DAQ designs using the MAX165BEWN+.
Does the MAX165BEWN+ require an external clock source?
No, the MAX165BEWN+ includes an internal clock generator sufficient for its 100 kSPS operation. External clocking is not required, though the device allows optional external clock input via the CLK pin if precise synchronization with system timing is needed. The internal clock ensures functional operation with minimal external components, a key design feature of the MAX165BEWN+.
How is 12-bit data read from the MAX165BEWN+?
The MAX165BEWN+ uses an 8-bit parallel bus with nibble-mode readout: D0–D7 carry the lower byte, and D0–D3 carry the upper 4 bits when HBEN is asserted. RD strobe controls data validity. This structure allows connection to 8-bit microcontrollers without data-width mismatch, and is a defining interface characteristic of the MAX165BEWN+.
What is the guaranteed linearity performance of the MAX165BEWN+ over temperature?
The MAX165BEWN+ guarantees ±1 LSB integral nonlinearity (INL) over its full operating temperature range of –40°C to +85°C. This specification is tested and ensured across all production units, making the MAX165BEWN+ suitable for applications where consistent measurement accuracy must be maintained without recalibration across environmental extremes.
Is the MAX165BEWN+ pin-compatible with other Maxim ADCs like the MAX162 or MAX163?
No, the MAX165BEWN+ is not pin-compatible with the MAX162 or MAX163. While all belong to Maxim's 12-bit ADC family, they differ in pin count (MAX162/MAX163 are 20-pin), reference configuration, and interface structure. The MAX165BEWN+'s 24-pin SO package and specific pin assignments-including dedicated HBEN and REF pins-are unique to its datasheet-defined layout and cannot be substituted without PCB revision.
MAX165BEWN+ 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:
- Active
- 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:
- -40°C ~ 85°C
- Supplier Device Package:
- 18-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX165BEWN+ FAQ
1.How can I place an order for MAX165BEWN+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX165BEWN+ 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 MAX165BEWN+ reliable?
The price and inventory of MAX165BEWN+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX165BEWN+ is usually 5 days.
3.What payment methods are accepted for MAX165BEWN+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX165BEWN+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX165BEWN+?
MAX165BEWN+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX165BEWN+ 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 MAX165BEWN+?
For technical support, including MAX165BEWN+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX165BEWN+ requirements.
6.How does Aetrix verify that MAX165BEWN+ is sourced from the original manufacturer or authorized distributors?
All MAX165BEWN+ 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 MAX165BEWN+ meets industry standards.
7.What is the process for return or replacement of MAX165BEWN+?
All MAX165BEWN+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX165BEWN+, 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 MAX165BEWN+ part is unused and in its original packaging.
Return procedure for MAX165BEWN+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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