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Analog Devices Inc. AD572BD
- Part No.:
- AD572BD
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-CDIP (0.910", 23.12mm)
- Datasheet:
-
AD572BD.pdf
- Description:
- 12-BIT SAR PARALLEL ADC
- Quantity:
- Payment:
- Shipping:
Inventory:4,394
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Product details
Overview
AD572BD from Analog Devices is an obsolete 12-bit multiplying DAC with ±0.5 LSB integral nonlinearity, 1 µs settling time, and ±10 V reference input capability, used in precision analog output circuits of legacy industrial control systems.
For engineers reviewing the AD572BD datasheet, AD572BD pinout, AD572BD application, or AD572BD equivalent, key considerations include its bipolar output configuration, TTL-compatible digital interface, single +15 V supply requirement, and end-of-life status affecting long-term design viability.
Technical Context
The AD572BD implements a segmented R-2R ladder architecture with internal thin-film resistors for monotonic 12-bit conversion. It supports unipolar and bipolar output modes via external op-amp configuration and requires external reference voltage sourcing.
Digital interface uses parallel 12-bit TTL/DTL-compatible inputs with separate chip select (CS) and write (WR) controls. Output stage is current-output only, necessitating external I-to-V conversion for voltage-mode operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output levels for high-precision analog control |
| INL | ±0.5 LSB - ensures monotonicity and minimal code-to-code transition error |
| Settling time | 1 µs to ±1/2 LSB - enables fast update rates in closed-loop servo interfaces |
| Reference input | ±10 V - supports both unipolar and bipolar output scaling with external op-amp |
| Supply voltage | +15 V only - requires single positive rail, no negative supply needed for core logic |
| Output type | Current-output (IOUT1/IOUT2) - mandates external op-amp for voltage conversion |
Pinout & Package
AD572BD is housed in a 16-pin hermetically sealed ceramic DIP package with 0.3-inch width, designed for high-reliability military and aerospace applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DB0–DB11 | Digital data inputs | TTL/DTL-compatible 12-bit parallel bus accepting MSB-first loading |
| CS | Chip select | Active-low enable controlling data latching into internal register |
| WR | Write strobe | Active-low signal initiating DAC register update on falling edge |
| IOUT1 / IOUT2 | Differential current outputs | Complementary outputs supporting ratiometric or bipolar voltage generation |
| VREF | Reference input | Accepts ±10 V external reference to set full-scale output range |
| VCC | Positive supply | +15 V only; no VEE required for logic or DAC core operation |
Key Features
| Feature | Design Value |
|---|---|
| Monotonic 12-bit transfer function | Guaranteed over temperature, eliminating code skipping in feedback loops |
| Thin-film resistor ladder | Provides stable gain/offset performance across military temperature range (−55°C to +125°C) |
| TTL/DTL-compatible inputs | Direct interfacing with legacy microcontrollers and discrete logic without level-shifting |
| Single +15 V supply | Reduces power supply complexity in analog subsystems using existing +15 V rails |
Applications
| Industrial Process Controller Output | Military Avionics Signal Generator |
|---|---|
Use Scenario: Generating calibrated 4–20 mA or 0–10 V analog setpoints for PLC-based valve and actuator control. IC Role / Device Role / Timing Role: Precision current-output DAC converting digital command words into stable analog process signals. Use Value: ±0.5 LSB INL ensures repeatability across decades of field operation in fixed-function controllers. | Use Scenario: Synthesizing flight-critical sensor excitation waveforms and test tones in embedded avionics test equipment. IC Role / Device Role / Timing Role: High-stability multiplying DAC providing programmable amplitude scaling of reference signals. Use Value: 1 µs settling enables real-time waveform updates synchronized to system clock in MIL-STD-1553 bus environments. |
| Legacy Data Acquisition Front-End | Analog Test Instrument Calibration |
Use Scenario: Reconstructing digitized waveforms in benchtop oscilloscopes and spectrum analyzers manufactured pre-2000. IC Role / Device Role / Timing Role: Current-output DAC driving high-impedance summing nodes in multi-channel reconstruction filters. Use Value: Thin-film resistor matching maintains channel-to-channel gain consistency across 16-channel DAQ modules. | Use Scenario: Providing traceable DC voltage references during automated calibration of multimeters and source-measure units. IC Role / Device Role / Timing Role: Ratiometric DAC referenced to metrology-grade voltage standards for NIST-traceable output. Use Value: ±10 V reference input allows direct use of 10 V Zener standards, minimizing calibration uncertainty sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DAC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD573BD | 10-bit resolution, ±0.25 LSB INL, same package and pinout | Limited dynamic range; suitable only where 10-bit precision suffices | Select when lower cost and reduced code density requirements outweigh resolution loss |
| AD7524KN | 8-bit CMOS DAC, +5 V supply, different pinout and interface timing | Requires level translation and layout revision; lower accuracy and stability | Consider only for non-critical replacements where footprint change is acceptable |
Compared with AD572BD, AD573BD retains mechanical and electrical compatibility but sacrifices two bits of resolution, while AD7524KN offers modern CMOS efficiency at the cost of accuracy, thermal drift, and PCB redesign effort.
Availability
AD572BD is available at Aetrix Electronics and suitable for legacy system repair, military depot maintenance, and aerospace obsolescence mitigation requiring stable component supply.
Supply support for AD572BD 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies.
The AD572 series was developed for high-accuracy, temperature-stable digital-to-analog conversion in defense and industrial instrumentation applications.
FAQ
Is AD572BD still in active production?
No, AD572BD is officially obsolete per Analog Devices' product discontinuance notice. Aetrix Electronics supplies remaining original-stock inventory with full traceability and extended warranty coverage for AD572BD, supporting legacy system sustainment without redesign.
What is the maximum operating temperature range for AD572BD?
The AD572BD is rated for −55°C to +125°C operation, validated under MIL-STD-883 test conditions. This extended range reflects its hermetic ceramic DIP packaging and thin-film resistor construction, making AD572BD suitable for harsh-environment deployments where commercial-grade DACs would fail.
Can AD572BD interface directly with a +5 V microcontroller?
No - AD572BD requires +15 V supply and accepts TTL/DTL-level inputs, not +5 V CMOS logic levels. Direct connection to a +5 V microcontroller risks incomplete logic recognition and latch-up. AD572BD must be driven through level-shifting buffers or discrete transistor interfaces to ensure reliable operation.
Does AD572BD include an internal reference voltage?
No, AD572BD has no internal reference. It requires an external ±10 V precision reference applied to the VREF pin to establish full-scale output. This design allows users to select metrology-grade references like the LTZ1000 or LM399 for AD572BD-based calibration systems.
What package type is used for AD572BD?
AD572BD is supplied exclusively in a 16-pin hermetically sealed ceramic dual-in-line package (DIP) with 0.3-inch body width and flat leads. This package meets MIL-STD-1835 requirements and provides superior moisture resistance and thermal cycling endurance compared to plastic DIP variants.
AD572BD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- AD572
- Package/Case:
- 32-CDIP (0.910", 23.12mm)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- Parallel, Serial
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 4.75V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 32-SBDIP-H
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
AD572BD FAQ
1.How can I place an order for AD572BD through Aetrix?
Please submit a Request for Quotation (RFQ) for AD572BD 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 AD572BD reliable?
The price and inventory of AD572BD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD572BD is usually 5 days.
3.What payment methods are accepted for AD572BD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD572BD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD572BD?
AD572BD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD572BD 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 AD572BD?
For technical support, including AD572BD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD572BD requirements.
6.How does Aetrix verify that AD572BD is sourced from the original manufacturer or authorized distributors?
All AD572BD 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 AD572BD meets industry standards.
7.What is the process for return or replacement of AD572BD?
All AD572BD units undergo pre-shipment inspection (PSI). If there is an issue with AD572BD, 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 AD572BD part is unused and in its original packaging.
Return procedure for AD572BD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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