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Analog Devices Inc. AD574ATD/883B
- Part No.:
- AD574ATD/883B
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-CDIP (0.600", 15.24mm)
- Datasheet:
-
AD574ATD/883B.pdf
- Description:
- IC ADC 12BIT SAR 28CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,201
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Product details
Overview
AD574ATD/883B from Analog Devices is a military-grade 12-bit monolithic analog-to-digital converter with internal 10 V reference, ±55°C to +125°C operating range, ±1 LSB linearity error over full temperature range, and 35 µs max 12-bit conversion time. It performs successive-approximation conversion without external components and is used in precision data acquisition for avionics, missile guidance, and ruggedized test equipment.
For engineers reviewing the AD574ATD/883B datasheet, AD574ATD/883B pinout, AD574ATD/883B application, or AD574ATD/883B equivalent, key selection factors include guaranteed no-missing-codes to 12 bits over temperature, MIL-STD-883B screening, ceramic DIP-28 packaging, and dual-mode (12-/8-bit) parallel interface compatibility with legacy 8-bit microprocessor buses.
Technical Context
The AD574ATD/883B implements a fully integrated successive-approximation register (SAR) architecture with internal current-output DAC, comparator, clock generator, and output buffers. It uses a temperature-compensated buried Zener reference trimmed to 10.00 V ±0.02 V and supports both unipolar (0 V to +10 V / +20 V) and bipolar (±5 V / ±10 V) input ranges via dedicated pins (10VIN, 20VIN, BIP OFF, REF IN).
Control logic accepts CE/CS/R/C/A0/12/8 signals to initiate 12-bit or 8-bit conversions and enable parallel data readout in either 12-bit word or two 8-bit nibbles. STS output provides end-of-conversion status, and all digital I/O meets TTL voltage thresholds with 5 pF capacitance and ±20 µA leakage in high-Z state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes with nominal 2.44 mV LSB for 10 V span |
| Linearity Error (TMIN–TMAX) | ±1 LSB - ensures monotonicity and predictable code transition behavior across –55°C to +125°C |
| No Missing Codes | Guaranteed to 12 bits - all 4096 codes appear in monotonic sequence over full temperature range |
| Conversion Time | 35 µs max (12-bit) - enables sampling rates up to ~28.6 kSPS in burst mode with external timing control |
| Internal Reference | 10.00 V ±0.02 V - stable Zener-based reference with 1.5 mA output drive capability for external buffering |
| Supply Voltages | VLOGIC = +4.5 V to +5.5 V; VCC = +11.4 V to +16.5 V; VEE = –11.4 V to –16.5 V - supports ±12 V or ±15 V operation |
| Power Dissipation | 725 mW max - requires thermal management in sealed enclosures or high ambient environments |
Pinout & Package
Ceramic Dual-In-Line Package (D-28), hermetically sealed, compliant with MIL-STD-883B screening requirements for shock, vibration, and long-term reliability in aerospace and defense systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VLOGIC) | Digital supply | Powers TTL-compatible logic interface; must be decoupled to Pin 15 (DC) with 4.7 µF + 0.1 µF |
| 9 (AC) | Analog common | Reference ground for internal DAC and reference; must connect directly to system analog ground point |
| 12 (BIP OFF) | Bipolar offset adjust | Connects to 10 V reference for ±5 V/±10 V operation; grounded for unipolar mode |
| 13 (10VIN) | Unipolar 10 V input | Accepts 0 V to +10 V signal with 5 kΩ input impedance; LSB = 2.44 mV |
| 14 (20VIN) | Unipolar 20 V input | Accepts 0 V to +20 V signal with 10 kΩ input impedance; LSB = 4.88 mV |
| 15 (DC) | Digital common | Ground return for logic section; tied to AC at package for optimal noise rejection |
| 28 (REF OUT) | 10 V reference output | Provides buffered 10.00 V ±0.02 V; drives external circuitry up to 1.5 mA (load must be constant during conversion) |
Key Features
| Feature | Design Value |
|---|---|
| Monolithic SAR ADC | Eliminates need for external DAC, comparator, or clock - reduces BOM count and layout complexity |
| MIL-STD-883B screening | Validated for operation under mechanical shock (500 g), vibration (20 g), and extended temperature cycling (–55°C to +125°C) |
| Dual conversion modes | Configurable 12-bit or 8-bit cycle via AO pin - enables rapid system diagnostics or coarse/fine acquisition strategies |
| Left-justified data format | Outputs binary fraction of full scale (0 to 4095/4096) - simplifies scaling in firmware without bit-shifting overhead |
| On-chip 10 V reference | Stable ±25 ppm/°C full-scale tempco - avoids external reference calibration and improves system-level accuracy |
Applications
| Avionics Sensor Interface | Missile Guidance Signal Conditioning |
|---|---|
Use Scenario: Digitizing pressure, temperature, and inertial sensor outputs in flight control computers under extreme thermal and vibration stress. IC Role / Device Role / Timing Role: Primary A/D converter capturing analog telemetry with deterministic 35 µs latency and guaranteed monotonicity. Use Value: ±1 LSB linearity and 12-bit no-missing-codes guarantee accurate threshold detection and closed-loop stability in real-time control loops. | Use Scenario: Converting gyroscope and accelerometer signals in tactical missile seeker electronics where EMI resilience and long-term calibration stability are critical. IC Role / Device Role / Timing Role: High-reliability ADC interfacing to radiation-hardened analog front-end; operates from ±12 V supplies with internal reference. Use Value: Ceramic DIP-28 package and MIL-STD-883B screening ensure survivability through launch vibration and sustained high-g maneuvers. |
| Ruggedized Test Equipment | Spacecraft Power Monitoring |
Use Scenario: Embedded data loggers in field-deployable ground support equipment measuring battery voltage, current, and thermal margins across desert and arctic environments. IC Role / Device Role / Timing Role: Standalone ADC with self-contained reference and dual-range inputs enabling flexible front-end design without external scaling resistors. Use Value: Unipolar/bipolar input flexibility and ±55°C to +125°C range eliminate need for external signal conditioning in wide-temperature deployments. | Use Scenario: Monitoring solar array output and bus voltage in low-earth orbit satellites where component lifetime and radiation tolerance are mission-critical. IC Role / Device Role / Timing Role: Radiation-tolerant ADC (when paired with shielding) providing telemetry digitization with minimal power and board area. Use Value: 725 mW max power dissipation and internal 10 V reference reduce thermal load and eliminate external reference drift in vacuum thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7896BRZ | Successive-approximation, 12-bit, 100 kSPS, single +5 V supply, no internal reference | Designed for low-power, single-supply embedded systems; lacks bipolar input and MIL screening | Select when size, power, and cost outweigh military reliability requirements |
| ADS8505IPFB | SAR ADC, 12-bit, 250 kSPS, ±5 V analog supply, external reference required, QFP-48 package | Higher speed and modern packaging; not screened to MIL-STD-883B and requires external reference buffer | Select for new designs needing higher throughput and surface-mount assembly, not legacy DIP-28 retrofits |
Compared with AD7896BRZ and ADS8505IPFB, the AD574ATD/883B uniquely combines hermetic ceramic DIP-28 packaging, built-in 10 V reference, bipolar/unipolar dual-range inputs, and MIL-STD-883B qualification-making it irreplaceable for life-critical upgrades of legacy avionics and defense hardware where form, fit, function, and qualification must match exactly.
Availability
AD574ATD/883B is available at Aetrix Electronics and suitable for avionics sensor interfaces, missile guidance signal conditioning, and ruggedized test equipment requiring stable component supply with full traceability and long-term obsolescence management.
Supply support for AD574ATD/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 global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, aerospace, and industrial markets since 1965.
The AD574A product line was engineered for high-accuracy, standalone data acquisition in harsh environments-prioritizing internal integration, temperature stability, and military-grade reliability over speed or power efficiency.
FAQ
What is the operating temperature range of the AD574ATD/883B?
The AD574ATD/883B is rated for operation from –55°C to +125°C and is screened per MIL-STD-883B Method 5005 for thermal cycling, ensuring performance stability across this full military temperature range. This specification is verified during qualification testing and documented in the device's Certificate of Conformance.
Does the AD574ATD/883B require external components to operate?
No, the AD574ATD/883B is a complete monolithic 12-bit ADC requiring no external DAC, comparator, clock, or reference. Only power supplies (+5 V, ±12 V or ±15 V), analog input connections, and control signals (CE, CS, R/C, A0, 12/8) are needed. External trim resistors are optional for calibration refinement.
What input voltage ranges does the AD574ATD/883B support?
The AD574ATD/883B supports four standard input ranges: unipolar 0 V to +10 V (via Pin 13), 0 V to +20 V (via Pin 14), and bipolar ±5 V or ±10 V (via Pins 13/14 and BIP OFF on Pin 12). Input impedance is 5 kΩ for 10 V span and 10 kΩ for 20 V span.
How is the internal 10 V reference used in the AD574ATD/883B?
The AD574ATD/883B's internal 10 V reference (Pin 28) powers the DAC and sets full-scale gain. It is trimmed to 10.00 V ±0.02 V and can source up to 1.5 mA. For ±12 V supply operation or variable external loads, Analog Devices recommends buffering REF OUT with an op amp to maintain conversion accuracy.
Is the AD574ATD/883B pin-compatible with other AD574A variants?
Yes, the AD574ATD/883B shares identical pinout, electrical characteristics, and functional behavior with all AD574A D-28 variants (e.g., AD574ASD, AD574AUD), differing only in temperature grade and MIL-STD-883B screening. All use the same ceramic DIP-28 footprint and control protocol.
AD574ATD/883B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-CDIP (0.600", 15.24mm)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- ADC
- Ratio - S/H:ADC:
- 0:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- ±11.4V ~ 16.5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -55°C ~ 125°C
- Supplier Device Package:
- 28-CDIP
- Mounting Type:
- Through Hole
- Grade:
- Military
- Qualification:
- MIL-STD-883
AD574ATD/883B FAQ
1.How can I place an order for AD574ATD/883B through Aetrix?
Please submit a Request for Quotation (RFQ) for AD574ATD/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 AD574ATD/883B reliable?
The price and inventory of AD574ATD/883B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD574ATD/883B is usually 5 days.
3.What payment methods are accepted for AD574ATD/883B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD574ATD/883B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD574ATD/883B?
AD574ATD/883B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD574ATD/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 AD574ATD/883B?
For technical support, including AD574ATD/883B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD574ATD/883B requirements.
6.How does Aetrix verify that AD574ATD/883B is sourced from the original manufacturer or authorized distributors?
All AD574ATD/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 AD574ATD/883B meets industry standards.
7.What is the process for return or replacement of AD574ATD/883B?
All AD574ATD/883B units undergo pre-shipment inspection (PSI). If there is an issue with AD574ATD/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 AD574ATD/883B part is unused and in its original packaging.
Return procedure for AD574ATD/883B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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