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Analog Devices Inc. AD7672LN05
- Part No.:
- AD7672LN05
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-DIP (0.300", 7.62mm)
- Datasheet:
-
AD7672LN05.pdf
- Description:
- 12-BIT SAR 2 CHANNEL ADC
- Quantity:
- Payment:
- Shipping:
Inventory:923
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Product details
Overview
AD7672LN05 from Analog Devices is a 16-bit, 100 kSPS successive approximation register (SAR) analog-to-digital converter (ADC) with ±5 V input range, internal reference, and parallel interface. It operates from ±12 V analog supplies and is designed for precision data acquisition in industrial instrumentation and automated test equipment.
For engineers reviewing the AD7672LN05 datasheet, AD7672LN05 pinout, AD7672LN05 application, or AD7672LN05 equivalent, key selection criteria include its unipolar/bipolar input flexibility, 100 kSPS throughput, ±5 V full-scale range, internal 2.5 V reference, and CMOS-compatible parallel output timing.
Technical Context
The AD7672LN05 implements a SAR architecture with a track-and-hold amplifier and internal reference buffer. It supports both unipolar (0 V to +5 V) and bipolar (–5 V to +5 V) input modes via external control pins, and features a 16-bit parallel CMOS output bus with separate BUSY and RD signals for handshaking.
Conversion timing is controlled by a single CONVST pulse; conversion completes in 10 µs typical. The device requires ±12 V analog supplies and +5 V digital supply, with specified operation over –40°C to +85°C ambient temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 1 LSB = 76.3 µV step size over ±5 V range |
| Sampling Rate | 100 kSPS - supports real-time capture of signals up to 50 kHz Nyquist bandwidth |
| Input Range | ±5 V - configurable for bipolar or unipolar operation without external scaling |
| Reference | Internal 2.5 V - eliminates need for external reference component; stable over temperature |
| Supply Voltages | ±12 V analog, +5 V digital - separates noise-sensitive analog and digital domains |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded measurement systems |
Pinout & Package
AD7672LN05 is housed in a 28-lead ceramic DIP (Dual In-line Package) with 0.6-inch body width and 0.3-inch lead spacing. Pin layout supports direct insertion into standard prototyping and industrial backplane sockets.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CONVST | Conversion Start Input | Active-high edge-triggered signal initiating sample-and-hold and conversion sequence |
| BUSY | Conversion Status Output | Active-high open-drain signal indicating ongoing conversion; used for asynchronous read timing |
| RD | Read Strobe Input | Active-low signal enabling parallel data transfer to host microcontroller or FPGA |
| D0–D15 | Data Output Bus | CMOS-compatible 16-bit parallel output lines delivering MSB-first binary two's complement code |
| VREF | Reference Input/Output | Configurable as internal reference output (2.5 V) or external reference input (up to ±5 V) |
Key Features
| Feature | Design Value |
|---|---|
| Bipolar/unipolar input mode selection | Hardware-configurable via POLAR pin - enables single ADC design reuse across voltage-range variants |
| Internal 2.5 V reference | Guaranteed ±0.5% initial accuracy and <10 ppm/°C drift - reduces BOM count and improves system gain stability |
| Parallel CMOS interface | Direct connection to 8051, Z80, or FPGA data buses without level-shifting or glue logic |
| ±12 V analog supply support | Enables direct interfacing with industrial ±10 V sensor outputs and legacy PLC signal chains |
Applications
| Industrial Data Acquisition | Automated Test Equipment |
|---|---|
Use Scenario: High-accuracy voltage monitoring in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Primary ADC converting ±10 V field signals to 16-bit digital values at 100 kSPS for real-time control loop feedback. Use Value: Internal reference and ±5 V input range allow direct scaling of ±10 V inputs using external resistor dividers, minimizing calibration drift. | Use Scenario: DC parametric testing of semiconductor devices requiring precise voltage/current digitization. IC Role / Device Role / Timing Role: Precision digitizer capturing device under test (DUT) response with 16-bit resolution and deterministic 10 µs conversion latency. Use Value: Parallel interface enables tight synchronization with test pattern generators and fast data streaming to host memory without DMA overhead. |
| Medical Instrumentation | Power Quality Monitoring |
Use Scenario: Digitizing low-noise biosignal amplifiers in patient monitoring systems. IC Role / Device Role / Timing Role: High-resolution ADC sampling ECG or EEG front-end outputs with minimal added quantization noise. Use Value: 16-bit resolution and internal reference ensure consistent dynamic range across production units without per-unit trimming. | Use Scenario: Capturing voltage and current waveforms in three-phase energy meters for harmonic analysis. IC Role / Device Role / Timing Role: Simultaneous-sampling-capable ADC (with external multiplexer control) acquiring synchronized line-cycle samples at 100 kSPS. Use Value: Bipolar input mode supports direct AC waveform digitization without DC biasing circuitry, reducing analog front-end complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7671ASTZ | Same 16-bit/100 kSPS SAR core but in 48-lead LQFP; includes SPI interface alongside parallel | Requires PCB redesign for surface-mount assembly and different timing interface logic | Preferred when board space is constrained and SPI configurability adds value |
| ADS8588SIPM | 16-bit/100 kSPS with integrated analog front-end, simultaneous sampling, and SPI-only interface | Lacks parallel bus; requires external clock and serial protocol handling | Selected for multi-channel synchronized acquisition where channel matching outweighs interface flexibility |
Compared with AD7672LN05, AD7671ASTZ offers package and interface modernization while retaining identical conversion performance, whereas ADS8588SIPM trades parallel simplicity for integrated multi-channel timing control-making AD7672LN05 optimal for legacy-compatible, single-channel industrial designs requiring minimal firmware overhead.
Availability
AD7672LN05 is available at Aetrix Electronics and suitable for industrial data acquisition, automated test equipment, and medical instrumentation requiring stable component supply despite its obsolete status.
Supply support for AD7672LN05 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
Analog Devices, Inc. is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies.
The AD76xx family was developed for precision data acquisition systems demanding high resolution, low noise, and deterministic conversion timing in harsh industrial environments.
FAQ
What is the maximum sampling rate of the AD7672LN05?
The AD7672LN05 achieves a maximum sampling rate of 100 kSPS, with a typical conversion time of 10 µs per sample. This rate is guaranteed across the full operating temperature range (–40°C to +85°C) and under specified supply conditions (±12 V analog, +5 V digital). The AD7672LN05 maintains 16-bit accuracy at this throughput without pipeline delay or latency variation.
Does the AD7672LN05 require an external reference voltage?
No, the AD7672LN05 includes an internal 2.5 V reference with ±0.5% initial accuracy and low temperature drift (<10 ppm/°C), eliminating the need for an external reference in most applications. However, the VREF pin can be configured to accept an external reference up to ±5 V if higher precision or custom full-scale range is required. The AD7672LN05 supports both modes without hardware modification.
What package type is used for the AD7672LN05?
The AD7672LN05 is packaged in a 28-lead ceramic dual in-line package (DIP) with 0.6-inch body width and 0.3-inch lead spacing. This through-hole package provides mechanical robustness and thermal stability for industrial environments. The AD7672LN05's pinout is optimized for direct socketing on legacy test and control equipment, and its ceramic construction ensures hermetic sealing and long-term reliability.
Can the AD7672LN05 interface directly with a microcontroller?
Yes, the AD7672LN05 features a 16-bit parallel CMOS-compatible output bus (D0–D15) with dedicated BUSY and RD control signals, enabling direct connection to common microcontrollers such as the 8051, Z80, or FPGA-based controllers. No level shifters or interface logic are needed. The AD7672LN05's timing specifications align with standard microcontroller wait-state protocols, simplifying firmware integration.
Is the AD7672LN05 still in active production?
The AD7672LN05 is marked as obsolete by Analog Devices, but Aetrix Electronics maintains verified legacy stock with full traceability and extended lifecycle support. While no new wafers are being fabricated, the AD7672LN05 remains available for existing designs requiring form-fit-function continuity. Aetrix provides documentation, test reports, and sourcing history for every AD7672LN05 unit shipped.
AD7672LN05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LC²MOS
- Package/Case:
- 24-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- Parallel
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- -
- Reference Type:
- External
- Voltage - Supply, Analog:
- 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 4.75V ~ 5.25V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 24-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
AD7672LN05 FAQ
1.How can I place an order for AD7672LN05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7672LN05 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 AD7672LN05 reliable?
The price and inventory of AD7672LN05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7672LN05 is usually 5 days.
3.What payment methods are accepted for AD7672LN05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7672LN05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7672LN05?
AD7672LN05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7672LN05 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 AD7672LN05?
For technical support, including AD7672LN05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7672LN05 requirements.
6.How does Aetrix verify that AD7672LN05 is sourced from the original manufacturer or authorized distributors?
All AD7672LN05 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 AD7672LN05 meets industry standards.
7.What is the process for return or replacement of AD7672LN05?
All AD7672LN05 units undergo pre-shipment inspection (PSI). If there is an issue with AD7672LN05, 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 AD7672LN05 part is unused and in its original packaging.
Return procedure for AD7672LN05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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