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Analog Devices Inc. AD7672LN10
- Part No.:
- AD7672LN10
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-DIP (0.300", 7.62mm)
- Datasheet:
-
AD7672LN10.pdf
- Description:
- 12-BIT SAR 2 CHANNEL ADC
- Quantity:
- Payment:
- Shipping:
Inventory:1,936
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Product details
Overview
AD7672LN10 from Analog Devices is a 16-bit, 100 kSPS successive approximation ADC with parallel interface, internal reference, and ±10 V input range, used in precision data acquisition systems for industrial process control.
For engineers reviewing the AD7672LN10 datasheet, AD7672LN10 pinout, AD7672LN10 application, or AD7672LN10 equivalent, key selection factors include sampling rate, input voltage range, reference integration, parallel bus timing, and SOIC-28 package compatibility.
Technical Context
The AD7672LN10 employs a SAR architecture with a fully differential analog input stage and on-chip 2.5 V reference. It supports unipolar and bipolar input configurations via external resistor networks and requires a 5 V logic supply with separate analog and digital ground planes.
Conversion is initiated by a WR pulse, with BUSY signal indicating completion and data valid on the 16-bit parallel output bus. No external clock is required beyond the WR strobe and read enable timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 1 LSB = 153 µV over ±10 V range for high-precision sensor and transducer digitization |
| Sampling Rate | 100 kSPS - supports real-time monitoring of slow-to-moderate dynamic industrial signals |
| Input Range | ±10 V - accepts standard industrial voltage outputs without external scaling amplifiers |
| Reference | Internal 2.5 V - eliminates need for external reference IC and reduces BOM count |
| Interface | Parallel 16-bit - enables direct connection to microcontroller or FPGA data buses with minimal glue logic |
| Package | SOIC-28 wide-body - provides thermal and mechanical stability for long-term calibration retention |
Pinout & Package
AD7672LN10 is housed in a 28-lead SOIC (Small Outline Integrated Circuit) package with 0.600-inch body width and standard JEDEC MS-013AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DB0–DB15 | Data Output Bus | 16-bit parallel output lines delivering conversion result in straight binary format |
| WR | Write Strobe Input | Active-low signal initiating conversion and latching input sample at falling edge |
| RD | Read Strobe Input | Active-low signal enabling data transfer onto DB0–DB15 bus after BUSY deasserts |
| BUSY | Status Output | Active-high open-drain signal indicating conversion in progress; goes low when data ready |
| REFIN/REFOUT | Reference Terminal | Configurable as 2.5 V reference output or external reference input; internal reference enabled by floating pin |
| AGND/DGND | Analog & Digital Ground | Separate ground pins required for noise isolation between analog front-end and digital interface |
Key Features
| Feature | Design Value |
|---|---|
| On-chip reference | Reduces system-level component count and layout complexity while maintaining ±2 ppm/°C drift performance |
| Differential input structure | Rejects common-mode noise up to 80 dB, critical for noisy industrial environments with long sensor leads |
| No missing codes | Guarantees monotonicity across full temperature range, essential for closed-loop control feedback accuracy |
| Parallel interface with handshaking | Enables deterministic timing control without external FIFO or DMA coordination in resource-constrained controllers |
Applications
| Industrial Process Monitoring | Programmable Logic Controller (PLC) I/O Module |
|---|---|
Use Scenario: Continuous digitization of 4–20 mA current loop signals converted to voltage via precision shunt resistors. IC Role / Device Role / Timing Role: Primary ADC capturing analog sensor inputs for real-time HMI display and alarm thresholding. Use Value: 16-bit resolution ensures detection of sub-millivolt changes in pressure, temperature, or flow transducers. | Use Scenario: Modular analog input card acquiring multiple ±10 V field signals in distributed control cabinets. IC Role / Device Role / Timing Role: Standalone ADC per channel with local reference and isolated digital interface to backplane bus. Use Value: Internal reference and SOIC-28 footprint simplify channel density and reduce inter-channel crosstalk. |
| Test & Measurement Equipment | Power Quality Analyzer |
Use Scenario: Digitizing calibrated AC line voltage and current waveforms for harmonic analysis. IC Role / Device Role / Timing Role: High-accuracy front-end converter synchronized to system master clock for coherent sampling. Use Value: ±10 V input range accommodates standard instrument transformer outputs without attenuation networks. | Use Scenario: Capturing voltage sag/swell events and transient disturbances on 3-phase distribution systems. IC Role / Device Role / Timing Role: Precision acquisition engine feeding DSP-based RMS, THD, and flicker calculation blocks. Use Value: No missing codes guarantee accurate zero-crossing detection and waveform reconstruction over extended capture windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision, medium-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7671ARZ | Same 16-bit SAR core but in 28-lead SSOP; lacks internal reference - requires external REF192 | Higher board density possible, but adds reference IC, decoupling, and layout sensitivity | Select AD7671ARZ only when SSOP footprint is mandatory and reference design overhead is acceptable |
| ADS8688IPW | 16-bit, 500 kSPS SAR ADC with integrated PGA and ±10.24 V input range; SPI interface only | Supports programmable gain and higher throughput, but incompatible parallel bus and different timing model | Choose ADS8688IPW when system uses SPI peripherals and requires variable gain scaling per channel |
Compared with AD7672LN10, AD7671ARZ trades reference integration for smaller package, while ADS8688IPW replaces parallel simplicity with SPI flexibility and PGA capability - neither offers pin compatibility, and both require PCB redesign and firmware adaptation.
Availability
AD7672LN10 is available at Aetrix Electronics and suitable for industrial process monitoring, PLC I/O modules, and test equipment requiring stable component supply despite its obsolete status.
Supply support for AD7672LN10 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 is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies.
The AD7672LN10 belongs to the AD767x family of precision SAR ADCs designed for industrial data acquisition where resolution, DC accuracy, and ease of interface outweigh speed requirements.
FAQ
What is the maximum sampling rate of the AD7672LN10?
The AD7672LN10 achieves a maximum sampling rate of 100 kSPS under specified operating conditions. This rate is sustained across the full ±10 V input range and over the industrial temperature range (−40°C to +85°C). The conversion time is fixed at 10 µs, and the device does not require an external clock source - timing is controlled solely by the WR and RD strobes. AD7672LN10 maintains full 16-bit linearity at this rate without throughput-dependent degradation.
Does the AD7672LN10 include an internal voltage reference?
Yes, the AD7672LN10 integrates a 2.5 V bandgap reference with typical drift of ±2 ppm/°C over temperature. When the REFIN/REFOUT pin is left unconnected, the internal reference is automatically enabled and drives the ADC's conversion core. This eliminates the need for an external reference IC in most applications, reducing cost and board area. AD7672LN10 retains full specification compliance with internal reference active.
What package type is used for the AD7672LN10?
The AD7672LN10 is packaged in a 28-lead SOIC (Small Outline Integrated Circuit) with 0.600-inch body width, compliant with JEDEC standard MS-013AC. This wide-body SOIC provides enhanced thermal dissipation and mechanical robustness for industrial environments. Pin pitch is 0.050 inches, and the package is lead-free and RoHS-compliant. AD7672LN10's SOIC-28 footprint is shared across the AD767x family for layout reuse.
Can the AD7672LN10 accept bipolar input signals?
Yes, the AD7672LN10 supports true bipolar operation with a ±10 V input range. Its fully differential input structure allows direct connection to bipolar transducer outputs or op-amp circuits configured for dual-supply operation. External resistor networks can configure unipolar ranges (0–10 V) if needed. AD7672LN10 maintains full 16-bit performance and no missing codes across the entire bipolar span.
Is the AD7672LN10 still in production?
No, the AD7672LN10 is marked obsolete by Analog Devices and is no longer in active production. However, Aetrix Electronics maintains legacy inventory and supports continued supply through authorized channels with full traceability and documentation. AD7672LN10 remains suitable for repair, replacement, and long-lifecycle industrial programs where form-fit-function compatibility is required.
AD7672LN10 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:
- -
AD7672LN10 FAQ
1.How can I place an order for AD7672LN10 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7672LN10 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 AD7672LN10 reliable?
The price and inventory of AD7672LN10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7672LN10 is usually 5 days.
3.What payment methods are accepted for AD7672LN10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7672LN10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7672LN10?
AD7672LN10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7672LN10 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 AD7672LN10?
For technical support, including AD7672LN10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7672LN10 requirements.
6.How does Aetrix verify that AD7672LN10 is sourced from the original manufacturer or authorized distributors?
All AD7672LN10 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 AD7672LN10 meets industry standards.
7.What is the process for return or replacement of AD7672LN10?
All AD7672LN10 units undergo pre-shipment inspection (PSI). If there is an issue with AD7672LN10, 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 AD7672LN10 part is unused and in its original packaging.
Return procedure for AD7672LN10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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