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Analog Devices Inc. AD1672AP-REEL
- Part No.:
- AD1672AP-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
AD1672AP-REEL.pdf
- Description:
- SINGLE ADC, 12-BIT PARALLEL
- Quantity:
- Payment:
- Shipping:
Inventory:4,411
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Product details
Overview
AD1672AP-REEL from Analog Devices is a monolithic 12-bit, 3 MSPS analog-to-digital converter with integrated sample-and-hold amplifier and 2.5 V voltage reference, operating from a single +5 V analog supply and +5 V/+3.3 V digital supplies. It delivers 68 dB SNR at 100 kHz input, –77 dB SFDR, and guarantees no missing codes across –40°C to +85°C in communications and imaging signal acquisition.
For engineers reviewing the AD1672AP-REEL datasheet, AD1672AP-REEL pinout, AD1672AP-REEL application, or AD1672AP-REEL equivalent, key selection considerations include its pipelined multistage architecture, 2.5 V/5 V unipolar or ±2.5 V bipolar input range configurability, OTR overflow flag, and PLCC-28 package compatibility with high-speed data acquisition systems requiring low-latency sampling and dc-coupled precision.
Technical Context
The AD1672AP-REEL implements a 4-stage pipelined architecture (4-4-3-4 bits with overlap) with output error correction logic, enabling full 12-bit accuracy at 3 MSPS while guaranteeing no missing codes over temperature. Its on-chip SHA settles to 12-bit accuracy in ≤150 ns from full-scale step and supports multiplexed or single-channel inputs up to Nyquist frequency.
It features dual ground domains (ACOM/DCOM/DRCOM), separate analog/digital/reference supplies (VCC/VDD/DRVDD), and configurable reference interface-either internal 2.5 V bandgap (REFOUT) or external 2.5 V source (REFIN)-with dedicated noise reduction pins (NCOMP1/NCOMP2) for optimal SFDR performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output levels with guaranteed no missing codes. |
| Max Conversion Rate | 3 MSPS - supports real-time digitization of signals up to 1.5 MHz Nyquist bandwidth. |
| S/(N+D) Ratio | 68 dB at 100 kHz - enables high-fidelity baseband signal capture in medical imaging front-ends. |
| Spurious-Free Dynamic Range | –77 dB at 100 kHz - ensures clean spectral representation for RF IF sampling and spectrum analyzers. |
| Differential Nonlinearity | ±0.5 LSB typical - maintains monotonicity critical for closed-loop control and servo feedback paths. |
| Aperture Jitter | 10 ps rms - limits sampling uncertainty-induced noise floor degradation in high-frequency applications. |
| Power Dissipation | 240 mW at 3 MSPS - reduces thermal load in dense PCB layouts compared to multi-chip alternatives. |
| Input Ranges | Configurable 0–2.5 V, 0–5 V (unipolar), or ±2.5 V (bipolar) - simplifies interface to diverse sensor and amplifier outputs. |
Pinout & Package
The AD1672AP-REEL is housed in a 28-pin Plastic Leaded Chip Carrier (PLCC-28) package, rated for –40°C to +85°C operation, with gull-wing leads and pin 1 identifier in top-left corner (viewed from top).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DRCOM (Pin 1) | Digital Output Driver Ground | Isolated ground return for digital output drivers to prevent switching noise coupling into analog domain. |
| BIT 12–BIT 1 (Pins 2–13) | Digital Output Data (LSB to MSB) | 12-bit parallel straight binary (unipolar) or offset binary (bipolar); latched on clock edge with 2.5-cycle pipeline latency. |
| DRVDD (Pin 14) | +5 V or +3.3 V Digital Output Supply | Selects logic-level compatibility: +5 V for TTL/CMOS, +3.3 V for LVTTL/LVCMOS interfaces. |
| OTR (Pin 15) | Out-of-Range Indicator | Active-high flag signaling overflow on leading edge of code 0 or trailing edge of code 4096; used with MSB for polarity detection. |
| CLOCK (Pin 16) | Sample Clock Input | Rising-edge triggered; minimum 334 ns period (3 MSPS); internal timing uses both edges but jitter sensitivity is rising-edge dominant. |
| VDD (Pin 17) | +5 V Digital Logic Supply | Powers internal logic, correction circuitry, and output latches; separate from DRVDD to isolate driver noise. |
| DCOM (Pin 18) | Digital Ground | Reference plane for VDD and digital logic; must be connected to system digital ground with low-inductance path. |
| REFCOM (Pins 19, 24) | Analog Reference Ground | Common return for REFOUT, REFIN, and internal reference circuitry; requires star grounding near ACOM. |
| REFOUT (Pin 20) | 2.5 V Reference Output | Laser-trimmed bandgap reference; requires ≥1 µF ceramic decoupling to REFCOM for stability and noise reduction. |
| AIN1 / AIN2 (Pins 21, 22) | Differential Analog Inputs | Single-ended input pair supporting unipolar/bipolar ranges via external resistor network; input resistance 2–5 kΩ depending on span. |
| REFIN (Pin 23) | Reference Input | Accepts external 2.5 V reference (e.g., AD780); internal reference disabled when REFIN driven externally. |
| NCOMP2 / NCOMP1 (Pins 25, 26) | Noise Compensation Nodes | Connect 1 µF ceramic caps to ACOM to suppress DAC amp and reference buffer transient currents, improving THD/SFDR. |
| ACOM (Pin 27) | Analog Ground | Primary analog return; must be isolated from DCOM/DRCOM and tied at single point to minimize ground loops. |
| VCC (Pin 28) | +5 V Analog Supply | Powers SHA, ADC core, and internal reference; requires local 1 µF + 0.1 µF decoupling to ACOM. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Sample-and-Hold Amplifier | Acquires full-scale input to 12-bit accuracy in ≤150 ns, enabling fast settling in multiplexed DAQ and video digitization. |
| Pin-Strappable Input Voltage Ranges | Hardware-selectable 0–2.5 V, 0–5 V, or ±2.5 V via external resistor configuration-no software or register programming required. |
| Integrated 2.5 V Bandgap Reference | Laser-trimmed for <±0.3% initial accuracy and <10 ppm/°C drift; supplies system reference without external components. |
| Dual-Domain Power Architecture | Separate VCC (analog), VDD (logic), and DRVDD (output driver) supplies reduce cross-domain noise coupling and improve SNR. |
| Out-of-Range (OTR) Flag | Hardware-level overflow detection synchronized to conversion clock, eliminating need for post-processing code analysis. |
| Low Aperture Jitter (10 ps rms) | Minimizes sampling-time uncertainty, preserving dynamic performance at high input frequencies up to 1.5 MHz. |
Applications
| Medical Ultrasound Beamforming | Communications IF Sampling |
|---|---|
Use Scenario: Digitizing echo return signals from phased-array transducers at 20–50 MSPS aggregate rates using time-interleaved AD1672AP-REEL channels. IC Role / Device Role / Timing Role: High-speed ADC capturing baseband I/Q samples with <12-bit linearity and low harmonic distortion for beam synthesis. Use Value: 68 dB S/(N+D) and –77 dB SFDR preserve signal fidelity during digital beamforming, reducing post-processing SNR loss. | Use Scenario: Downconverting and digitizing 70 MHz IF signals in cellular basestation receivers using undersampling techniques. IC Role / Device Role / Timing Role: Antialiasing-free IF sampling ADC operating at 3 MSPS with ±2.5 V input range and precise aperture timing. Use Value: 10 ps rms aperture jitter and 5 MHz full-power bandwidth enable accurate reconstruction of high-frequency IF tones without image corruption. |
| Industrial Imaging Sensor Interface | High-Speed Data Acquisition Systems |
Use Scenario: Capturing line-scan CCD output in machine vision inspection systems requiring 12-bit grayscale resolution at >1 MSPS pixel rate. IC Role / Device Role / Timing Role: Precision ADC interfacing to correlated double sampling (CDS) amplifiers with dc-coupled bipolar input support. Use Value: Guaranteed no missing codes and ±0.5 LSB DNL ensure consistent grayscale mapping across temperature for defect detection algorithms. | Use Scenario: Modular DAQ modules acquiring transient waveforms from vibration sensors, strain gauges, and power electronics in test benches. IC Role / Device Role / Timing Role: Standalone ADC subsystem with onboard reference and OTR flag for autonomous overrange detection in field-deployed units. Use Value: Integrated 2.5 V reference and REFIN/REFOUT flexibility simplify calibration traceability and reduce BOM count by two components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9220AR-REEL | 12-bit, 10 MSPS, 3.3 V single supply, no internal reference, requires external REF. | Better speed but higher power (650 mW); lacks OTR flag and pin-strappable ranges. | Choose for higher throughput where external reference and layout space permit. |
| MAX1186ECM+ | 12-bit, 3 MSPS, internal reference, 3.3 V supply only, TQFP-48 package. | Smaller footprint but no PLCC-28 compatibility; lower SFDR (–70 dB) and higher DNL (±1 LSB). | Choose for space-constrained designs accepting trade-offs in spurious performance and thermal margin. |
Compared with AD9220AR-REEL and MAX1186ECM+, the AD1672AP-REEL uniquely combines PLCC-28 packaging, integrated 2.5 V reference with REFIN/REFOUT flexibility, hardware-configurable input ranges, and OTR flag-making it optimal for legacy industrial and medical systems requiring drop-in replacement and minimal board redesign.
Availability
AD1672AP-REEL is available at Aetrix Electronics and suitable for medical ultrasound beamforming, communications IF sampling, and industrial imaging sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD1672AP-REEL 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 leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, founded in 1965 and headquartered in Wilmington, MA.
The AD1672 product line was designed for high-speed, precision data acquisition in demanding instrumentation, medical imaging, and communications infrastructure-emphasizing integration, low power, and robust dc/ac performance in monolithic form.
FAQ
What is the maximum sampling rate supported by the AD1672AP-REEL?
The AD1672AP-REEL supports a maximum conversion rate of 3 MSPS, corresponding to a minimum clock period of 334 ns. This enables digitization of input signals up to 1.5 MHz (Nyquist frequency) while maintaining full 12-bit accuracy and guaranteed no missing codes across its specified temperature range of –40°C to +85°C. The AD1672AP-REEL achieves this using a 4-stage pipelined architecture with error correction logic.
Does the AD1672AP-REEL include an internal voltage reference?
Yes, the AD1672AP-REEL integrates a laser-trimmed 2.5 V curvature-compensated bandgap reference accessible via REFOUT (Pin 20). It delivers ±0.3% initial accuracy and <10 ppm/°C drift, and can serve as a system reference. An external 2.5 V reference may be applied to REFIN (Pin 23) to override the internal reference-critical for applications requiring tighter dc accuracy or lower temperature drift than the AD1672AP-REEL's internal reference provides.
How does the AD1672AP-REEL handle overflow conditions?
The AD1672AP-REEL provides an active-high Out-of-Range (OTR) signal on Pin 15 that asserts on the leading edge of code 0 or trailing edge of code 4096, indicating input signal overflow. When used with the MSB (Pin 13), OTR distinguishes between low and high overflow in bipolar mode. This hardware-level flag eliminates need for software-based range checking and enables real-time saturation detection in closed-loop systems using the AD1672AP-REEL.
What are the supported analog input configurations for the AD1672AP-REEL?
The AD1672AP-REEL supports three pin-configurable analog input ranges: 0 V to 2.5 V (unipolar), 0 V to 5.0 V (unipolar), and –2.5 V to +2.5 V (bipolar), selected via external resistor networks per Figure 10 in the datasheet. Input resistance varies from 2 kΩ (2.5 V range) to 4 kΩ (5 V range), and input capacitance is 10 pF. The AD1672AP-REEL's SHA acquires full-scale steps to 12-bit accuracy within 150 ns, making it suitable for multiplexed and transient signal capture.
Can the AD1672AP-REEL interface directly with 3.3 V logic families?
Yes, the AD1672AP-REEL's digital output drivers are configurable for 3.3 V logic compatibility by connecting DRVDD (Pin 14) to +3.3 V instead of +5 V. Its CMOS outputs meet VOH ≥ 2.4 V (at IOH = 0.5 mA) and VOL ≤ 0.4 V (at IOL = 1.6 mA) under 3.3 V operation, ensuring reliable interfacing with LVTTL and LVCMOS devices. This flexibility allows the AD1672AP-REEL to integrate seamlessly into mixed-voltage systems without level-shifting circuitry.
AD1672AP-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- AD1672
- Package/Case:
- 28-LCC (J-Lead)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 3M
- Number of Inputs:
- 12
- Input Type:
- Differential
- Data Interface:
- -
- Configuration:
- ADC
- Ratio - S/H:ADC:
- 0:4
- Number of A/D Converters:
- 4
- Architecture:
- -
- Reference Type:
- Internal
- Voltage - Supply, Analog:
- 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 4.75V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -55°C ~ 125°C
- Supplier Device Package:
- 28-PLCC (11.51x11.51)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD1672AP-REEL FAQ
1.How can I place an order for AD1672AP-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD1672AP-REEL 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 AD1672AP-REEL reliable?
The price and inventory of AD1672AP-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD1672AP-REEL is usually 5 days.
3.What payment methods are accepted for AD1672AP-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD1672AP-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD1672AP-REEL?
AD1672AP-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD1672AP-REEL 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 AD1672AP-REEL?
For technical support, including AD1672AP-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD1672AP-REEL requirements.
6.How does Aetrix verify that AD1672AP-REEL is sourced from the original manufacturer or authorized distributors?
All AD1672AP-REEL 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 AD1672AP-REEL meets industry standards.
7.What is the process for return or replacement of AD1672AP-REEL?
All AD1672AP-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD1672AP-REEL, 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 AD1672AP-REEL part is unused and in its original packaging.
Return procedure for AD1672AP-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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