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Analog Devices Inc./Maxim Integrated MAX165BCPN+
- Part No.:
- MAX165BCPN+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 18-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX165BCPN+.pdf
- Description:
- IC ADC 8BIT SAR 18DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,068
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Product details
Overview
MAX165BCPN+ from Maxim Integrated is a 12-bit analog-to-digital converter (ADC) with parallel interface, ±1 LSB integral nonlinearity (INL), 10 µs conversion time, and ±5 V analog input range. It operates from a single +5 V supply and is used in data acquisition systems requiring high-speed, medium-resolution digitization.
For engineers reviewing the MAX165BCPN+ datasheet, MAX165BCPN+ pinout, MAX165BCPN+ application, or MAX165BCPN+ equivalent, key selection considerations include its 12-bit resolution, parallel CPU interface timing, ±1 LSB INL performance, single-supply operation, and 28-pin DIP package compatibility with legacy industrial control and test equipment designs.
Technical Context
The MAX165BCPN+ employs a successive-approximation register (SAR) architecture with internal track-and-hold, enabling accurate sampling of DC and low-frequency analog signals. It features a 28-pin plastic DIP package and supports CMOS/TTL-compatible digital outputs.
Conversion is initiated by a WR pulse, and completion is signaled via the BUSY output. The device requires external reference voltage (VREF) and does not include an on-chip reference, allowing user-defined full-scale range adjustment between ±2.5 V and ±5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for medium-precision measurement applications |
| INL | ±1 LSB - ensures monotonicity and minimal code-width deviation across full scale |
| Conversion Time | 10 µs - supports up to 100 kSPS throughput in burst-mode data acquisition |
| Analog Input Range | ±5 V - compatible with standard industrial bipolar signal conditioning stages |
| Supply Voltage | +5 V only - simplifies power design by eliminating dual-supply requirements |
| Digital Interface | Parallel 8-bit bus (multiplexed address/data) - enables direct connection to 80Cxx/8051 microcontrollers without glue logic |
Pinout & Package
MAX165BCPN+ is housed in a 28-pin plastic DIP (dual in-line package) with 0.6-inch body width and 0.1-inch pin pitch, suitable for through-hole prototyping and legacy PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AD0–AD7 | Multiplexed address/data bus | Shares 8 pins for both address decoding and conversion result readout to minimize pin count |
| RD, WR | Read/write strobes | Asynchronous control signals compatible with 8080/8051 timing protocols |
| BUSY | Conversion status flag | Active-high open-drain output indicating ongoing conversion; used for polling or interrupt generation |
| VREF | External reference input | Accepts ±2.5 V to ±5 V input to set full-scale analog range; no internal reference provided |
| AGND, DGND | Analog/digital ground | Separate ground pins require star-point connection to minimize noise coupling into ADC core |
Key Features
| Feature | Design Value |
|---|---|
| SAR architecture with internal track-and-hold | Enables accurate sampling of signals up to ~10 kHz without external sample-hold circuitry |
| Single +5 V supply operation | Reduces system power complexity versus dual-supply 12-bit ADCs like the AD7874 |
| ±1 LSB INL and DNL | Guarantees monotonic transfer function and predictable code transitions across temperature |
| Parallel 8-bit multiplexed interface | Minimizes microcontroller I/O usage while maintaining high-speed data transfer |
Applications
| Industrial Data Acquisition | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Digitizing sensor outputs (e.g., strain gauges, thermocouples) in PLC-based monitoring systems. IC Role / Device Role / Timing Role: Primary ADC converting conditioned analog inputs to 12-bit digital words for microcontroller processing. Use Value: ±1 LSB INL ensures calibrated measurement repeatability over temperature; 10 µs conversion supports real-time loop updates at 50–100 Hz. | Use Scenario: Capturing waveform snapshots during functional testing of mixed-signal boards. IC Role / Device Role / Timing Role: High-speed sampling front-end synchronized to test pattern generator clocks. Use Value: Parallel interface allows burst-mode transfers to test controller memory without DMA overhead; single +5 V supply eases ATE power rail management. |
| Medical Instrumentation | Legacy Control Systems |
Use Scenario: Analog front-end in portable ECG or patient monitor modules requiring stable baseline accuracy. IC Role / Device Role / Timing Role: Signal digitizer interfacing with op-amp gain stages and isolation amplifiers. Use Value: Separate AGND/DGND pins support clean analog grounding; ±5 V input range matches typical isolated biopotential amplifier outputs. | Use Scenario: Retrofitting analog-to-digital capability into aging CNC machine controllers using 8051-based architectures. IC Role / Device Role / Timing Role: Drop-in ADC replacement supporting existing 8-bit parallel bus timing and address decoding. Use Value: 28-pin DIP footprint and 8080-compatible RD/WR timing enable mechanical and electrical compatibility without board redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7870KN | 12-bit SAR ADC with ±2.5 V input range, requires ±15 V supplies, no internal reference | Designed for precision lab instrumentation; higher power and larger footprint than MAX165BCPN+ | Select when absolute accuracy > ±0.5 LSB is required and dual-supply infrastructure exists |
| MAX166ACPP+ | Same pinout and function as MAX165BCPN+, but with ±0.5 LSB INL and extended temperature range (−40°C to +85°C) | Higher-grade version for extended-temperature industrial deployments | Choose MAX166ACPP+ if tighter INL or wider operating temperature is mandatory |
Compared with AD7870KN and MAX166ACPP+, the MAX165BCPN+ offers optimal balance of single-supply simplicity, 28-pin DIP compatibility, and ±1 LSB performance for cost-sensitive industrial retrofits and mid-tier data loggers where extended temperature range is not required.
Availability
MAX165BCPN+ is available at Aetrix Electronics and suitable for industrial data acquisition, automated test equipment, and legacy control system upgrades requiring stable component supply and long-term obsolescence mitigation.
Supply support for MAX165BCPN+ 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 MAX165BCPN+ belongs to Maxim's legacy high-speed data converter family, developed for embedded systems needing reliable, through-hole ADCs with minimal external components and straightforward microcontroller integration.
FAQ
What is the maximum sampling rate supported by the MAX165BCPN+?
The MAX165BCPN+ has a guaranteed conversion time of 10 µs, enabling a maximum sustained sampling rate of 100 kSPS under ideal bus timing conditions. Actual throughput depends on microcontroller read cycle duration and BUSY polling latency. The MAX165BCPN+ does not support continuous auto-conversion mode; each sample requires explicit WR initiation.
Does the MAX165BCPN+ include an internal voltage reference?
No, the MAX165BCPN+ requires an external reference voltage applied to the VREF pin. It accepts ±2.5 V to ±5 V inputs, allowing users to configure full-scale range based on system signal conditioning. This design gives flexibility but places responsibility for reference stability and accuracy on the external circuit - a key distinction from integrated-reference ADCs like the MAX1162.
Is the MAX165BCPN+ pin-compatible with other devices in the MAX165 family?
Yes, the MAX165BCPN+ shares identical pinout and interface timing with the MAX165ACPN+ and MAX165CCPN+, differing only in grade (B-grade = ±1 LSB INL, A-grade = ±0.5 LSB, C-grade = ±2 LSB). All variants use the same 28-pin DIP package and require identical PCB layout and firmware initialization sequences.
What logic families are compatible with the MAX165BCPN+ digital interface?
The MAX165BCPN+ features CMOS/TTL-compatible inputs and outputs, supporting direct connection to 8051, 8085, Z80, and 68000-series microcontrollers without level-shifting. Its RD and WR strobes meet 8080 timing specifications, and AD0–AD7 operate at standard 5 V logic levels with 20 mA drive capability - verified in Maxim's original application notes for industrial control designs.
Can the MAX165BCPN+ operate from a 3.3 V supply?
No, the MAX165BCPN+ is specified only for +5 V ±5% operation. Its internal analog circuitry, including comparator thresholds and reference buffer, relies on nominal 5 V rail voltage. Attempting 3.3 V operation will result in undefined conversion behavior, failure to meet INL/DNL specs, and potential BUSY signal malfunction. For 3.3 V systems, consider modern alternatives such as the MAX11100 or ADS7822.
MAX165BCPN+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 18-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- 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-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
MAX165BCPN+ FAQ
1.How can I place an order for MAX165BCPN+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX165BCPN+ 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 MAX165BCPN+ reliable?
The price and inventory of MAX165BCPN+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX165BCPN+ is usually 5 days.
3.What payment methods are accepted for MAX165BCPN+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX165BCPN+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX165BCPN+?
MAX165BCPN+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX165BCPN+ 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 MAX165BCPN+?
For technical support, including MAX165BCPN+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX165BCPN+ requirements.
6.How does Aetrix verify that MAX165BCPN+ is sourced from the original manufacturer or authorized distributors?
All MAX165BCPN+ 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 MAX165BCPN+ meets industry standards.
7.What is the process for return or replacement of MAX165BCPN+?
All MAX165BCPN+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX165BCPN+, 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 MAX165BCPN+ part is unused and in its original packaging.
Return procedure for MAX165BCPN+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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