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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:2,942
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Product details
Overview
MAX165BEWN from Maxim Integrated is a 12-bit analog-to-digital converter (ADC) with parallel interface, 250ksps sampling rate, ±1 LSB integral nonlinearity, and single +5V supply operation. It is used in data acquisition systems requiring high-speed, medium-resolution digitization of analog sensor or signal-conditioned outputs.
For engineers reviewing the MAX165BEWN datasheet, MAX165BEWN pinout, MAX165BEWN application, or MAX165BEWN equivalent, key selection criteria include its 12-bit resolution, 250ksps throughput, on-chip track/hold, single-supply compatibility, and CMOS-compatible parallel output timing.
Technical Context
The MAX165BEWN implements a successive-approximation register (SAR) architecture with internal track-and-hold, enabling accurate conversion without external sample-hold circuitry. It features TTL/CMOS-compatible digital outputs and operates over the industrial temperature range (–40°C to +85°C).
Conversion is initiated by a rising edge on the CONVST input; data becomes valid after a fixed 4.2µs conversion time. The device supports independent analog and digital ground pins (AGND, DGND) for noise isolation in mixed-signal PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - provides 4096 discrete output levels for medium-precision measurement applications |
| Sampling Rate | 250ksps - supports real-time digitization of signals up to ~125kHz (Nyquist-limited) |
| INL | ±1 LSB - ensures monotonicity and predictable code transitions across full scale |
| Supply Voltage | +5V only - simplifies power design with single-rail operation, no dual or negative supplies required |
| Conversion Time | 4.2µs - defines minimum inter-conversion interval and maximum sustained throughput |
| Operating Temp | –40°C to +85°C - qualified for industrial environments without derating |
Pinout & Package
MAX165BEWN is housed in a 28-pin wide SOIC (SO28W) package with 0.3-inch body width and standard 0.050-inch pin pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CONVST | Conversion Start Input | Rising-edge-triggered command initiates sampling and conversion cycle |
| RD | Read Strobe Input | Active-low signal enables parallel data output onto D0–D11 bus |
| CS | Chip Select Input | Active-low enables device communication and reduces standby current |
| AGND / DGND | Analog & Digital Ground | Separate ground returns minimize digital switching noise coupling into analog path |
| VREF | Reference Voltage Input | Accepts external 2.5V reference for full-scale adjustment; internal buffer available |
Key Features
| Feature | Design Value |
|---|---|
| On-chip track-and-hold | Eliminates need for external sample-hold amplifier in most medium-speed DAQ designs |
| TTL/CMOS-compatible outputs | Direct interfacing with microcontrollers, FPGAs, and ASICs without level-shifting |
| Single +5V supply | Reduces board-level power complexity versus dual-supply ADCs like older µP-compatible parts |
| Industrial temperature range | Validated performance across –40°C to +85°C without calibration drift or timing violation |
Applications
| Industrial Data Acquisition | Test & Measurement Equipment |
|---|---|
Use Scenario: Digitizing outputs from strain gauges, thermocouples, or pressure transducers in PLC I/O modules. IC Role / Device Role / Timing Role: Primary ADC capturing conditioned analog inputs at ≤250ksps for host controller processing. Use Value: 12-bit resolution and ±1 LSB INL ensure repeatability in closed-loop control feedback paths. | Use Scenario: Capturing transient waveforms in portable oscilloscopes and automated test fixtures. IC Role / Device Role / Timing Role: Medium-speed digitizer synchronizing with trigger logic and buffering data to memory or display engine. Use Value: 4.2µs conversion time enables deterministic sampling intervals critical for time-domain analysis. |
| Medical Instrumentation | Communications Baseband Processing |
Use Scenario: Converting biopotential signals (ECG, EEG) in patient monitoring devices with isolated front-ends. IC Role / Device Role / Timing Role: Isolated-side ADC delivering digitized physiological data to microcontroller via opto-coupled parallel bus. Use Value: Single +5V operation simplifies isolated power design; separate AGND/DGND aids noise rejection in low-amplitude signal chains. | Use Scenario: Sampling baseband I/Q signals in wireless infrastructure receivers before digital demodulation. IC Role / Device Role / Timing Role: Fixed-rate ADC feeding FPGA-based digital signal processors in multi-channel receiver cards. Use Value: CMOS-compatible parallel outputs reduce FPGA I/O resource usage and timing closure effort compared to serial interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog-to-digital conversion applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7892BN-3 (Analog Devices) | Same 12-bit SAR architecture, but 600ksps max rate and requires ±5V supplies | Better speed, but incompatible with single +5V systems; needs dual-rail power design | Select AD7892BN-3 only when higher throughput justifies added power complexity |
| ADS7822U (Texas Instruments) | 12-bit SAR with SPI interface, 200ksps, single +5V supply, but serial-only output | Lacks parallel bus; requires FPGA/microcontroller with SPI peripheral instead of generic I/O port | Choose ADS7822U where board space or pin count constraints favor serial interface over parallel |
Compared with AD7892BN-3 and ADS7822U, the MAX165BEWN uniquely balances 250ksps throughput, parallel interface simplicity, and single +5V operation-making it optimal for legacy microcontroller-based DAQ systems where bus width and supply count are fixed constraints.
Availability
MAX165BEWN is available at Aetrix Electronics and suitable for industrial data acquisition, test equipment, and medical instrumentation 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-speed data converter family, engineered specifically for cost-sensitive, medium-performance data acquisition systems needing simple parallel interfacing and single-supply operation.
FAQ
What is the maximum sampling rate supported by the MAX165BEWN?
The MAX165BEWN supports a maximum sampling rate of 250ksps. This rate is determined by its fixed 4.2µs conversion time and compatible parallel read timing. At this rate, the MAX165BEWN delivers full 12-bit data without pipeline latency or missing codes, making it suitable for real-time waveform capture in industrial and test applications.
Does the MAX165BEWN require external reference voltage?
The MAX165BEWN accepts an external reference voltage via the VREF pin, typically 2.5V, to set full-scale input range. It also includes an internal reference buffer, allowing direct connection of precision external references without loading error. No internal reference generator is present, so an external source is mandatory for accurate conversion.
Is the MAX165BEWN pin-compatible with other Maxim ADCs like the MAX167 or MAX168?
No, the MAX165BEWN is not pin-compatible with the MAX167 or MAX168. Those devices differ in pin count (24-pin vs. 28-pin), signal assignment (e.g., different clocking or output enable schemes), and internal architecture. The MAX165BEWN's 28-pin SOIC layout and specific CONVST/RD/CS control scheme are unique to its datasheet-defined pinout.
What is the operating temperature range for the MAX165BEWN?
The MAX165BEWN is specified to operate from –40°C to +85°C. This industrial-grade temperature range is validated per Maxim's qualification standards and applies across all electrical parameters in the datasheet, including conversion time, INL, and supply current. Operation outside this range may result in parametric deviation or functional failure.
Can the MAX165BEWN interface directly with a 3.3V microcontroller?
The MAX165BEWN outputs are TTL/CMOS-compatible but swing from 0V to VDD (typically +5V). Direct connection to a 3.3V microcontroller I/O port risks overvoltage damage unless level translation or current-limiting resistors are used. For safe interfacing, a dedicated level shifter or microcontroller with 5V-tolerant inputs is required alongside the MAX165BEWN.
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:
- 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:
- -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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