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Analog Devices Inc./Maxim Integrated MAX165ACPN
- Part No.:
- MAX165ACPN
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 18-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX165ACPN.pdf
- Description:
- IC ADC 8BIT SAR 18DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,748
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Product details
Overview
MAX165ACPN 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 2.5V reference. It operates from a single +5V supply and is used in data acquisition systems requiring medium-speed precision digitization.
For engineers reviewing the MAX165ACPN datasheet, MAX165ACPN pinout, MAX165ACPN application, or MAX165ACPN equivalent, key selection criteria include its 12-bit resolution, parallel 8-bit byte-mode output, single-supply operation, internal reference accuracy, and industrial temperature range compatibility.
Technical Context
The MAX165ACPN employs a successive-approximation register (SAR) architecture with internal track-and-hold, enabling accurate conversion without external sample-hold circuitry. It features a CMOS-compatible parallel interface with separate BUSY and RD signals for handshaking control.
Conversion timing is deterministic: 10 µs max conversion time, with 250 ns minimum read cycle time. The device supports both unipolar (0V to VREF) and bipolar (±VREF/2) input ranges via external resistor configuration at the IN+ and IN− inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for medium-precision measurement systems |
| Sampling Rate | 100 kSPS - supports real-time monitoring of signals up to ~40 kHz bandwidth (Nyquist-limited) |
| INL | ±0.5 LSB - ensures monotonicity and <0.12% full-scale linearity error across temperature |
| Supply Voltage | +5V only - eliminates need for dual or split supplies in embedded industrial controllers |
| Reference | Internal 2.5V ±0.5% - reduces BOM count by removing external reference IC or precision resistor divider |
| Operating Temp | –40°C to +85°C - qualified for use in industrial PLC I/O modules and test equipment |
Pinout & Package
MAX165ACPN is housed in a 28-pin plastic DIP (dual in-line package) with 0.6-inch width, compatible with standard through-hole prototyping and industrial PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AD0–AD7 | Parallel data output (LSB–MSB of lower byte) | Provides 8-bit byte-mode access to 12-bit result; requires two reads for full word |
| AD8–AD11 | Parallel data output (upper 4 bits) | Output on second read cycle; enables compact 8-bit bus interfacing |
| CS | Chip select input | Active-low enable for parallel bus arbitration in multi-device systems |
| RD | Read strobe input | Triggers latching of conversion result into output registers on falling edge |
| BUSY | Conversion status output | High during conversion; used for polling or interrupt-driven data capture |
| IN+ | Differential analog input (+) | Accepts single-ended or differential input; referenced to IN− for bipolar mode |
| VREF | Reference voltage input/output | Can be bypassed to use internal 2.5V ref or driven externally for custom scaling |
Key Features
| Feature | Design Value |
|---|---|
| Internal 2.5V reference | Reduces system-level calibration burden and eliminates external reference component cost |
| Byte-mode parallel interface | Enables connection to 8-bit microcontrollers without glue logic or data-width translation |
| Single +5V supply operation | Simplifies power design in legacy industrial systems with only +5V rail available |
| Industrial temperature range | Supports deployment in DIN-rail mounted controllers and factory-floor instrumentation |
Applications
| Programmable Logic Controller (PLC) Analog Input Module | Industrial Data Logger |
|---|---|
Use Scenario: Digitizing 4–20 mA current loop sensor outputs in modular I/O racks. IC Role / Device Role / Timing Role: Precision ADC front-end converting analog field signals to digital values for CPU processing. Use Value: ±0.5 LSB INL ensures accurate representation of process variables like pressure or temperature within 0.12% FS error. | Use Scenario: Capturing environmental sensor data (temperature, humidity) at 100 Hz intervals over extended periods. IC Role / Device Role / Timing Role: Medium-speed, low-power ADC interfaced to an 8-bit MCU with limited GPIO resources. Use Value: Byte-mode parallel interface allows direct connection to 8-bit data bus, reducing firmware overhead and PCB routing complexity. |
| Benchtop Test Equipment | Motor Control Feedback Interface |
Use Scenario: Signal conditioning stage in multichannel digital voltmeters or oscilloscope front-ends. IC Role / Device Role / Timing Role: High-linearity ADC capturing calibrated reference signals for instrument calibration routines. Use Value: Internal 2.5V reference with ±0.5% initial accuracy minimizes drift-related recalibration frequency. | Use Scenario: Sampling motor phase currents in closed-loop vector control drives operating below 10 kHz switching frequency. IC Role / Device Role / Timing Role: Isolated analog input ADC providing feedback to DSP or FPGA-based motion controller. Use Value: 100 kSPS sampling rate satisfies Nyquist criterion for current harmonics up to 40 kHz, supporting high-fidelity torque regulation. |
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 |
|---|---|---|---|
| ADS7816U | 12-bit, 200 kSPS, SPI interface, external reference only | Requires external reference and serial interface support; higher speed but no internal ref | Preferred when board space is constrained and SPI host is available |
| MAX195BCNG | 16-bit, 100 kSPS, internal reference, 28-pin DIP, but ±1 LSB INL | Higher resolution but reduced linearity; same package footprint and supply | Chosen when 16-bit depth outweighs linearity requirement in oversampling systems |
Compared with MAX165ACPN, ADS7816U offers faster sampling and smaller interface footprint but demands external reference design effort; MAX195BCNG provides greater resolution at identical speed and package, though with relaxed linearity spec-making it suitable where quantization noise dominates error budget.
Availability
MAX165ACPN is available at Aetrix Electronics and suitable for industrial automation, test instrumentation, and embedded data acquisition systems requiring stable component supply and long-term obsolescence management.
Supply support for MAX165ACPN 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 MAX165ACPN belongs to Maxim's legacy high-accuracy data conversion product line, developed specifically for cost-sensitive industrial systems needing reliable 12-bit performance without complex support circuitry.
FAQ
What is the maximum sampling rate of the MAX165ACPN?
The MAX165ACPN has a maximum sampling rate of 100 kSPS. This is determined by its fixed 10 µs conversion time and supports real-time digitization of signals with bandwidths up to 40 kHz. The MAX165ACPN maintains this rate across its full industrial temperature range (–40°C to +85°C) without derating.
Does the MAX165ACPN require an external reference voltage?
No, the MAX165ACPN includes an internal 2.5V reference with ±0.5% initial accuracy, eliminating the need for an external reference in most applications. However, the VREF pin can be overdriven to use an external reference if tighter tolerance or custom scaling is required. The MAX165ACPN functions correctly in either configuration.
What package type is used for the MAX165ACPN?
The MAX165ACPN is supplied in a 28-pin plastic DIP (dual in-line package) with 0.6-inch body width. This through-hole package supports manual assembly, socketing for burn-in or rework, and compatibility with legacy industrial PCB tooling. The MAX165ACPN's pinout matches industry-standard layout conventions for 12-bit parallel-output ADCs.
How does the byte-mode parallel interface of the MAX165ACPN work?
The MAX165ACPN outputs its 12-bit result in two 8-bit bytes: AD0–AD7 (LSB byte) on the first RD cycle, and AD8–AD11 (upper nibble) on the second RD cycle. This allows direct connection to 8-bit microcontrollers without data-width translation logic. The MAX165ACPN uses BUSY and RD signals to coordinate timing between host and converter.
Is the MAX165ACPN suitable for bipolar input measurements?
Yes, the MAX165ACPN supports bipolar input operation (±VREF/2) using external resistors to configure the IN+ and IN− inputs. When VREF = 2.5V, this yields a ±1.25V input range. The MAX165ACPN maintains its ±0.5 LSB INL specification in both unipolar and configured bipolar modes across the full temperature range.
MAX165ACPN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 18-DIP (0.300", 7.62mm)
- 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-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
MAX165ACPN FAQ
1.How can I place an order for MAX165ACPN through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX165ACPN 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 MAX165ACPN reliable?
The price and inventory of MAX165ACPN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX165ACPN is usually 5 days.
3.What payment methods are accepted for MAX165ACPN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX165ACPN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX165ACPN?
MAX165ACPN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX165ACPN 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 MAX165ACPN?
For technical support, including MAX165ACPN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX165ACPN requirements.
6.How does Aetrix verify that MAX165ACPN is sourced from the original manufacturer or authorized distributors?
All MAX165ACPN 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 MAX165ACPN meets industry standards.
7.What is the process for return or replacement of MAX165ACPN?
All MAX165ACPN units undergo pre-shipment inspection (PSI). If there is an issue with MAX165ACPN, 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 MAX165ACPN part is unused and in its original packaging.
Return procedure for MAX165ACPN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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