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Analog Devices Inc. AD7672LP05
- Part No.:
- AD7672LP05
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
AD7672LP05.pdf
- Description:
- 12-BIT SAR 2 CHANNEL ADC
- Quantity:
- Payment:
- Shipping:
Inventory:518
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Product details
Overview
AD7672LP05 from Analog Devices is an obsolete 16-bit, 100 kSPS successive approximation register (SAR) analog-to-digital converter (ADC) in a 28-lead cerdip package, featuring ±1 LSB integral nonlinearity, 85 dB SNR, and parallel interface with CMOS-compatible outputs for precision data acquisition systems.
For engineers reviewing the AD7672LP05 datasheet, AD7672LP05 pinout, AD7672LP05 application, or AD7672LP05 equivalent, key selection considerations include sampling rate, INL performance, parallel bus timing, supply voltage tolerance, and legacy industrial system compatibility.
Technical Context
The AD7672LP05 implements a SAR architecture with internal track-and-hold and reference buffer, supporting unipolar 0 V to +5 V input range. It operates from dual ±12 V analog supplies and a +5 V digital supply, with conversion time of 10 µs and full-scale settling in 1.5 µs.
Its parallel 16-bit data bus includes BUSY, CONVST, and RD control signals, and it requires an external 5 V reference for full accuracy. No on-chip reference or serial interface is provided.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 1 part in 65,536 quantization steps for high-precision measurement |
| Sampling Rate | 100 kSPS - supports real-time capture of signals up to 50 kHz per Nyquist criterion |
| INL | ±1 LSB max - ensures monotonicity and minimizes code-dependent gain/offset errors |
| SNR | 85 dB - enables resolution of low-amplitude signals buried in noise floor |
| Supply Voltages | ±12 V analog, +5 V digital - mandates isolated dual-rail power design with tight regulation |
| Input Range | 0 V to +5 V unipolar - requires level-shifting for bipolar or scaled sensor outputs |
| Package | 28-lead cerdip - hermetic, through-hole, MIL-STD-883 qualified for harsh environments |
Pinout & Package
AD7672LP05 is housed in a 28-lead ceramic DIP (cerdip) package with 0.6-inch width and 0.3-inch row spacing, rated for operation from –55°C to +125°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–16, 24–28 | Data Output Bus (D0–D15) | CMOS-compatible parallel output lines; require pull-down or termination for clean bus read timing |
| 17 | RD | Active-low read strobe; latches conversion result onto data bus when low |
| 18 | CONVST | Active-high conversion start; initiates sample-and-hold acquisition on rising edge |
| 19 | CLK | Internal clock enable; tied high for internal clock operation (100 kSPS mode) |
| 20 | REFIN/REFOUT | 5 V reference input/output; must be driven by stable external 5 V source for specified accuracy |
| 21 | AGND | Analog ground - separate return path required to minimize digital switching noise coupling |
| 22 | DGND | Digital ground - connected to AGND at single point near device for star grounding |
| 23 | VBUSY | Busy indicator - goes high during conversion, returns low when data ready |
Key Features
| Feature | Design Value |
|---|---|
| On-chip track-and-hold | Eliminates need for external sample-hold circuitry in DC–50 kHz signal paths |
| No missing codes over temperature | Guarantees monotonic behavior across –55°C to +125°C without calibration |
| Parallel 16-bit interface | Reduces microcontroller overhead vs. serial interfaces; supports burst-mode acquisition |
| ±12 V analog supply support | Enables direct connection to legacy industrial transducers and op-amp signal chains |
| Cerdip hermetic packaging | Provides long-term reliability in high-humidity, high-vibration, or radiation-prone environments |
Applications
| Industrial Process Monitoring | Avionics Data Acquisition |
|---|---|
Use Scenario: Continuous monitoring of pressure, temperature, and flow sensors in refinery control cabinets. IC Role / Device Role / Timing Role: Precision ADC capturing slow-varying analog sensor outputs with minimal drift and guaranteed monotonicity. Use Value: ±1 LSB INL and cerdip packaging ensure long-term calibration stability and field reliability under thermal cycling. | Use Scenario: Recording flight test parameters including accelerometer and altimeter signals in certified avionics recorders. IC Role / Device Role / Timing Role: High-accuracy, radiation-tolerant ADC interfacing with legacy analog sensor suites via parallel bus. Use Value: 85 dB SNR and –55°C to +125°C operation meet DO-160 environmental requirements for airborne equipment. |
| Military Test Equipment | High-Voltage Power Supply Feedback |
Use Scenario: Calibration-grade bench instruments measuring DC voltage and current with traceable accuracy. IC Role / Device Role / Timing Role: Reference-grade ADC providing 16-bit resolution and no missing codes for metrology-grade digitization. Use Value: Dual ±12 V supply compatibility allows direct integration with high-precision op-amp front-ends without level-shifting. | Use Scenario: Closed-loop feedback sensing of 0–1000 V output in programmable laboratory power supplies. IC Role / Device Role / Timing Role: Isolated analog input digitizer converting scaled-down HV sense signals into digital control values. Use Value: Cerdip package withstands high-potential stress and long-term bias aging in continuous HV applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7671ASTZ | 16-bit, 100 kSPS, LQFP-48 package; includes internal reference and SPI interface | Requires PCB redesign for surface-mount layout and serial firmware integration | Preferred for new designs needing smaller footprint and integrated reference, but not drop-in |
| ADS8588SIPM | 16-bit, 100 kSPS, 64-pin HTQFP; integrated reference, SPI+parallel modes, ±10 V input range | Supports wider input range and modern digital interfaces; higher pin count and cost | Suitable for upgrades requiring extended range or mixed-interface flexibility, not pin-compatible |
Compared with AD7672LP05, AD7671ASTZ reduces external component count but sacrifices hermetic reliability and requires serial protocol adaptation, while ADS8588SIPM offers enhanced input flexibility at the cost of board space and legacy bus compatibility.
Availability
AD7672LP05 is available at Aetrix Electronics and suitable for industrial process monitoring, avionics data acquisition, and military test equipment requiring stable component supply despite end-of-life status.
Supply support for AD7672LP05 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 designed for precision data acquisition in demanding industrial, aerospace, and defense applications where accuracy, stability, and rugged packaging are critical.
FAQ
Is AD7672LP05 still in production?
No, AD7672LP05 is officially obsolete and no longer manufactured by Analog Devices. Aetrix Electronics maintains limited legacy stock with full traceability and provides lifecycle coordination support for ongoing production programs relying on this part.
What is the maximum operating temperature for AD7672LP05?
The AD7672LP05 is rated for operation from –55°C to +125°C, validated per MIL-STD-883 test methods. Its cerdip package ensures reliable performance across this full military temperature range without derating.
Does AD7672LP05 include an internal voltage reference?
No, AD7672LP05 does not include an internal voltage reference. It requires an external stable 5 V reference applied to the REFIN/REFOUT pin to achieve specified linearity and accuracy.
Can AD7672LP05 interface directly with a 3.3 V microcontroller?
No, AD7672LP05's parallel data bus outputs are CMOS-compatible but swing from 0 V to +5 V. Direct connection to a 3.3 V microcontroller requires level-shifting circuitry to prevent I/O damage and ensure logic-level compatibility.
What is the conversion time of AD7672LP05?
The AD7672LP05 has a fixed conversion time of 10 µs, enabling a maximum throughput rate of 100 kSPS. Full-scale settling occurs within 1.5 µs after conversion completion, supporting precise timing-critical sampling sequences.
AD7672LP05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LC²MOS
- Package/Case:
- 28-LCC (J-Lead)
- 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:
- 28-PLCC (11.51x11.51)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7672LP05 FAQ
1.How can I place an order for AD7672LP05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7672LP05 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 AD7672LP05 reliable?
The price and inventory of AD7672LP05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7672LP05 is usually 5 days.
3.What payment methods are accepted for AD7672LP05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7672LP05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7672LP05?
AD7672LP05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7672LP05 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 AD7672LP05?
For technical support, including AD7672LP05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7672LP05 requirements.
6.How does Aetrix verify that AD7672LP05 is sourced from the original manufacturer or authorized distributors?
All AD7672LP05 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 AD7672LP05 meets industry standards.
7.What is the process for return or replacement of AD7672LP05?
All AD7672LP05 units undergo pre-shipment inspection (PSI). If there is an issue with AD7672LP05, 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 AD7672LP05 part is unused and in its original packaging.
Return procedure for AD7672LP05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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