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Analog Devices Inc. AD872ASD/883B
- Part No.:
- AD872ASD/883B
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-CDIP (0.605", 15.37mm)
- Datasheet:
-
AD872ASD/883B.pdf
- Description:
- 12-BIT ADC, PARALLEL WORD ACCESS
- Quantity:
- Payment:
- Shipping:
Inventory:423
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Product details
Overview
AD872ASD/883B from Analog Devices is a complete monolithic 12-bit, 10 MSPS analog-to-digital converter with integrated track-and-hold amplifier and internal 2.5 V voltage reference, operating across –55°C to +125°C, delivering 61 dB SNR at 1 MHz input, and designed for high-reliability military data acquisition systems.
For engineers reviewing the AD872ASD/883B datasheet, AD872ASD/883B pinout, AD872ASD/883B application, or AD872ASD/883B equivalent, this page provides verified electrical specifications, MIL-STD-883B qualified thermal and timing behavior, package-specific terminal mapping, and validated alternatives for ruggedized sampling systems requiring guaranteed no-missing-codes performance.
Technical Context
The AD872ASD/883B implements a pipelined ADC architecture with on-chip THA and correction logic to achieve 12-bit resolution and ±0.75% FSR zero error over full temperature range. It supports dual-supply analog operation (AVDD = +5 V, AVSS = –5 V) and separate digital supplies (DVDD = +5 V, DRVDD = +5 V), with strict ground isolation requirements (DRGND–DGND ≤ ±0.3 V).
Timing is governed by a 100 ns minimum clock period (10 MSPS), 3-cycle pipeline latency, and output enable (OEN) control for three-state digital outputs. The device complies with SMD 5962-93060 and is qualified per MIL-STD-883 Method 1005 life test and Method 1015 burn-in.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - guarantees no missing codes across full operating range |
| Sampling Rate | 10 MSPS - fixed maximum conversion rate defined by 100 ns clock period |
| SNR @ 1 MHz | 61 dB - limits dynamic range in medium-frequency signal digitization |
| Analog Input Range | ±1 V - differential input span compatible with precision op-amp front-ends |
| Internal Reference | 2.46 V to 2.54 V - trimmed 2.5 V output enables self-contained operation without external reference |
| Power Dissipation | 1.3 W - requires thermal management via θJC = 28°C/W in D-28 package |
| Operating Temperature | –55°C to +125°C - meets extended military ambient requirements per MIL-STD-883B |
Pinout & Package
AD872ASD/883B is supplied in a 28-pin side-brazed ceramic dual in-line package (CDIP2-T28, D-28), rated for hermetic sealing and high-reliability environments. Thermal resistance is θJC = 28°C/W and θJA = 60°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28 | See pin map in functional diagram | Pin numbering follows standard D-28 layout; pins marked NC are unconnected; AGND/DGND/DRGND require separate low-impedance routing |
| VINA, VINB | Differential analog inputs | Accept ±1 V input range; high-impedance (50 kΩ typ) with 10 pF capacitance |
| CLK | Master sampling clock input | Accepts TTL-compatible signals; 100 ns period defines 10 MSPS max rate |
| OEN | Output enable control | Active-low; places parallel digital outputs (BIT1–BIT12, OTR) in high-impedance state |
| REF IN, REF GND, REF OUT | Reference interface | Supports internal 2.5 V reference or external reference; REF GND must tie to AGND |
| AVDD, AVSS, DVDD, DRVDD, AGND, DGND, DRGND | Supply and ground terminals | Strict separation required: AVSS = –5 V, AVDD = +5 V, DVDD/DRVDD = +5 V; DRGND–DGND ≤ ±0.3 V |
Key Features
| Feature | Design Value |
|---|---|
| On-chip track-and-hold amplifier | Enables accurate sampling of fast-changing signals up to Nyquist frequency without external THA |
| MIL-STD-883B qualification | Validated for high-reliability applications including burn-in, life test, and hermeticity per Method 1015/1005 |
| Guaranteed no missing codes | Ensures monotonic transfer function across full 12-bit range under all operating conditions |
| Separate analog/digital supply domains | Minimizes noise coupling between analog front-end and digital output drivers |
| Three-state parallel digital outputs | Allows direct connection to shared data buses with OEN-controlled bus arbitration |
Applications
| Radar Signal Digitization | Avionics Data Acquisition |
|---|---|
Use Scenario: Digitizing intermediate frequency (IF) signals in airborne pulse-Doppler radar receivers. IC Role / Device Role / Timing Role: Primary ADC capturing 1–10 MHz IF waveforms with 10 MSPS sustained rate and <61 dB SNR. Use Value: Internal THA and 12-bit resolution preserve target detection fidelity; MIL-883B qualification ensures operation in vibration- and temperature-cycled flight environments. | Use Scenario: Converting sensor outputs (accelerometers, pressure transducers) in flight control computers. IC Role / Device Role / Timing Role: High-stability ADC interfacing with precision conditioning circuitry across –55°C to +125°C. Use Value: ±0.75% FSR zero error and ±1.25% FSR gain error ensure calibrated measurement integrity without field recalibration. |
| Electronic Warfare Receivers | Tactical Communications Monitoring |
Use Scenario: Wideband signal capture in SIGINT platforms detecting frequency-hopping emitters. IC Role / Device Role / Timing Role: Front-end ADC supporting real-time FFT analysis with guaranteed no-missing-codes linearity. Use Value: 12-bit resolution and 60–61 dB SNR enable reliable symbol recovery in low-SNR jamming environments. | Use Scenario: Digitizing baseband I/Q channels in secure HF/VHF software-defined radios. IC Role / Device Role / Timing Role: Dual-channel synchronized sampling node with precise timing alignment via common CLK and OEN. Use Value: Low THD (–62 dB) preserves modulation accuracy; separate AGND/DGND routing prevents digital switching noise from corrupting analog paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, high-reliability ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD676SD/883B | 16-bit, 100 kSPS SAR architecture; no on-chip THA; higher resolution but lower speed | Better suited for precision DC/low-frequency measurements, not wideband IF sampling | Select AD676SD/883B when resolution > speed; AD872ASD/883B when 10 MSPS real-time capture is mandatory |
| AD9057BSTZ-10 | 10-bit, 60 MSPS; CMOS process; commercial temp range only (–40°C to +85°C); no MIL-883B qualification | Targeted at high-volume industrial or telecom infrastructure, not aerospace/military deployment | Choose AD9057BSTZ-10 for cost-sensitive, high-throughput non-military designs; AD872ASD/883B where radiation tolerance and extended temperature compliance are required |
Compared with AD676SD/883B and AD9057BSTZ-10, the AD872ASD/883B uniquely balances 12-bit resolution, 10 MSPS throughput, on-chip THA, and full MIL-STD-883B qualification-making it irreplaceable for deployed military systems demanding guaranteed performance under environmental stress.
Availability
AD872ASD/883B is available at Aetrix Electronics and suitable for radar signal digitization, avionics data acquisition, and electronic warfare receivers requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for AD872ASD/883B 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 for precision measurement and signal chain applications.
The AD872A product line delivers radiation-tolerant, high-speed data converters engineered for defense electronics where deterministic timing, guaranteed linearity, and extended-temperature reliability are non-negotiable design requirements.
FAQ
What is the maximum sampling rate supported by the AD872ASD/883B?
The AD872ASD/883B supports a maximum sampling rate of 10 MSPS, enforced by a minimum clock period (tC) of 100 ns. This rate is guaranteed across its full operating temperature range of –55°C to +125°C and is consistent with SMD 5962-93060 compliance. The AD872ASD/883B does not support oversampling or variable-rate modes beyond this specification.
Does the AD872ASD/883B include an internal voltage reference?
Yes, the AD872ASD/883B integrates a trimmed 2.5 V voltage reference with output specified between 2.46 V and 2.54 V. This internal reference enables standalone operation without external components and is used for both conversion scaling and REF OUT functionality. External reference operation is also supported via the REF IN pin, but the AD872ASD/883B's internal reference remains active unless explicitly overridden.
What are the power supply requirements for the AD872ASD/883B?
The AD872ASD/883B requires four independent supplies: AVDD = +5 V, AVSS = –5 V, DVDD = +5 V, and DRVDD = +5 V. Ground domains must be isolated-AGND, DGND, and DRGND are separate pins with DRGND–DGND limited to ±0.3 V. Total power dissipation is 1.3 W, with analog supply current totaling 242 mA (92 mA on AVDD, 150 mA on AVSS) and digital supply current totaling 23 mA (21 mA on DVDD, 2 mA on DRVDD).
Is the AD872ASD/883B pin-compatible with other AD872A variants such as AD872ASE/883B?
No, the AD872ASD/883B is not pin-compatible with AD872ASE/883B. The AD872ASD/883B uses a 28-pin side-brazed DIP (D-28) package, while AD872ASE/883B uses a 44-terminal LCC (E-44A) package with different pin count, layout, and terminal assignments-including additional pins for surface-mount-specific functions like QTR and multiple DRGND/DRVDD connections. Board redesign is required for substitution.
What does "no missing codes" mean for the AD872ASD/883B, and is it guaranteed?
"No missing codes" means the AD872ASD/883B guarantees monotonicity across its full 12-bit transfer function-every integer code from 0 to 4095 appears at least once for some input voltage. This is guaranteed per datasheet Table 1 (DNL = ±1 LSB) and applies across all operating conditions, including full temperature range and supply variations. It is a key requirement for closed-loop control and real-time signal reconstruction where code dropout would cause system instability.
AD872ASD/883B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- AD872A
- Package/Case:
- 28-CDIP (0.605", 15.37mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 10M
- Number of Inputs:
- 2
- Input Type:
- Differential, Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 3:4
- Number of A/D Converters:
- 4
- Architecture:
- Pipelined
- Reference Type:
- External, 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-CDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
AD872ASD/883B FAQ
1.How can I place an order for AD872ASD/883B through Aetrix?
Please submit a Request for Quotation (RFQ) for AD872ASD/883B 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 AD872ASD/883B reliable?
The price and inventory of AD872ASD/883B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD872ASD/883B is usually 5 days.
3.What payment methods are accepted for AD872ASD/883B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD872ASD/883B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD872ASD/883B?
AD872ASD/883B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD872ASD/883B 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 AD872ASD/883B?
For technical support, including AD872ASD/883B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD872ASD/883B requirements.
6.How does Aetrix verify that AD872ASD/883B is sourced from the original manufacturer or authorized distributors?
All AD872ASD/883B 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 AD872ASD/883B meets industry standards.
7.What is the process for return or replacement of AD872ASD/883B?
All AD872ASD/883B units undergo pre-shipment inspection (PSI). If there is an issue with AD872ASD/883B, 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 AD872ASD/883B part is unused and in its original packaging.
Return procedure for AD872ASD/883B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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