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Analog Devices Inc. AD573SD/883B
- Part No.:
- AD573SD/883B
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-CDIP (0.300", 7.62mm)
- Datasheet:
-
AD573SD/883B.pdf
- Description:
- IC ADC 10BIT 20CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,246
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Product details
Overview
AD573SD/883B from Analog Devices is a military-grade 10-bit successive approximation analog-to-digital converter (ADC) with integrated buried Zener reference, on-chip clock, comparator, and SAR logic. It delivers ±1 LSB relative accuracy, 20 µs typical conversion time, and supports unipolar (0 V to +10 V) or bipolar (–5 V to +5 V) input ranges using a single pin configuration. It operates from +5 V and –12 V to –15 V supplies and is used in precision data acquisition systems for aerospace telemetry and hardened instrumentation.
For engineers reviewing the AD573SD/883B datasheet, AD573SD/883B pinout, AD573SD/883B application, or AD573SD/883B equivalent, key selection considerations include guaranteed no-missing-codes performance across –55°C to +125°C, MIL-STD-883B compliance, hermetic ceramic DIP packaging, dual-byte parallel output interface (HBE/LBE), and compatibility with 8-bit microprocessor buses without external buffers.
Technical Context
The AD573SD/883B implements successive approximation using integrated injection logic (I2L) SAR architecture, with a laser-trimmed SiCr thin-film resistor ladder and temperature-compensated subsurface Zener reference ensuring stability over full military temperature range. Its internal 10-bit current-output DAC compares against analog input via a high-gain comparator, generating a precise binary code within 20 µs.
Conversion is initiated by a trailing-edge-triggered CONVERT pulse; DATA READY (DR) signals completion. Output data is partitioned into high byte (DB9–DB2) and low byte (DB1–DB0), enabled separately via HBE and LBE pins-enabling flexible interfacing to 8-bit buses or full 10-bit reads in 16-bit systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10 bits - defines smallest resolvable voltage step (9.766 mV at 10 V FS) |
| Relative Accuracy | ±1 LSB - guarantees monotonic transfer function and no missing codes over –55°C to +125°C |
| Conversion Time | 20 µs typ - enables up to 50 kSPS sampling in burst-mode applications |
| Analog Input Range | Unipolar: 0 V to +10 V; Bipolar: –5 V to +5 V - selectable via Pin 16 (BIP OFF) open or grounded |
| Supply Voltages | +5 V (V+) and –12 V to –15 V (V–) - enables direct interface with legacy ±12/±15 V analog signal chains |
| Output Coding | Unipolar: Positive true binary; Bipolar: Positive true offset binary - ensures intuitive digital interpretation of signed/unisigned inputs |
| Package | 20-pin side-brazed ceramic DIP (D-20) - hermetically sealed, MIL-STD-883B qualified for high-reliability environments |
Pinout & Package
The AD573SD/883B is housed in a 20-pin hermetically sealed ceramic dual in-line package (SBDIP, D-20), compliant with MIL-STD-883B and JEDEC MS-001. The package provides robust thermal and mechanical stability across extreme temperature cycling and high-vibration environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (DB0) | LSB Data Output | Least significant bit of 10-bit conversion result; enabled only when LBE = low |
| Pin 2 (DB1) | LSB+1 Data Output | Second least significant bit; part of 2-bit low-byte bus enabled by LBE |
| Pin 3–10 (DB2–DB9) | MSB Data Outputs | Bits 2 through 9 (DB2 = 2nd LSB, DB9 = MSB); enabled by HBE for 8-bit high-byte read |
| Pin 11 (V–) | Negative Supply Rail | Accepts –12 V to –15 V; powers internal DAC, reference, and comparator circuitry |
| Pin 12 (ANALOG COMMON) | Analog Reference Node | Carries ~2 mA static current post-conversion; requires local decoupling and isolation from digital common |
| Pin 13 (ANALOG IN) | Differential Analog Input | Accepts 0 V to +10 V (unipolar) or –5 V to +5 V (bipolar); input impedance 5.0 kΩ typical |
| Pin 14 (CONVERT) | Edge-Triggered Start Command | Falling edge initiates 20 µs SAR cycle; minimum pulse width 500 ns |
| Pin 15 (DATA READY) | Conversion Status Flag | Active-low open-collector output; goes low 20 µs after CONVERT falling edge to indicate valid data |
| Pin 16 (BIPOLAR OFFSET CONTROL) | Input Range Selection | Open = bipolar (–5 V to +5 V); grounded = unipolar (0 V to +10 V); not TTL-compatible |
| Pin 17 (DIGITAL COMMON) | Digital Ground Reference | Reference for all logic inputs/outputs; allows up to ±200 mV common-mode offset vs ANALOG COMMON |
| Pin 18 (LBE) | Low-Byte Output Enable | Active-low control for DB0–DB1; must be high during conversion to avoid bus contention |
| Pin 19 (HBE) | High-Byte Output Enable | Active-low control for DB2–DB9; enables 8-bit parallel read aligned with microprocessor data bus |
| Pin 20 (V+) | Positive Supply Rail | +5 V supply; powers logic, SAR, and output buffers; tolerates +4.5 V to +7.0 V |
Key Features
| Feature | Design Value |
|---|---|
| Complete monolithic ADC subsystem | Integrates DAC, Zener reference, clock, comparator, SAR, and 3-state buffers - eliminates need for external precision components |
| No missing codes over temperature | Guaranteed across –55°C to +125°C - critical for closed-loop control and safety-critical measurement where code gaps cause system errors |
| Flexible microprocessor interface | Supports 8-bit bus reads via HBE/LBE split-byte mode or full 10-bit left-justified word - compatible with 6502, 8085, and Z80 systems without glue logic |
| Bipolar/unipolar input select | Single-pin configuration (Pin 16) switches between 0 V–10 V and –5 V–+5 V ranges - simplifies board design and reduces BOM count |
| MIL-STD-883B qualification | Meets screening, testing, and reliability requirements for military/aerospace use - includes burn-in, temperature cycling, and hermeticity validation |
Applications
| Avionics Sensor Interface | Missile Guidance Telemetry |
|---|---|
Use Scenario: Digitizing pressure, temperature, and acceleration signals from inertial measurement units (IMUs) in fighter jet flight control systems. IC Role / Device Role / Timing Role: Primary A/D converter capturing analog sensor outputs at 20–50 kSPS with deterministic 20 µs latency and guaranteed monotonicity. Use Value: ±1 LSB accuracy and no missing codes ensure reliable fault detection and prevent erroneous actuator commands under extreme thermal stress. |
Use Scenario: Converting guidance sensor feedback (gyro, accelerometer, star tracker) in tactical missile seekers operating from –55°C to +125°C. IC Role / Device Role / Timing Role: High-reliability ADC providing radiation-tolerant, hermetically sealed digitization with MIL-STD-883B traceability. Use Value: Ceramic DIP packaging and buried Zener reference maintain calibration stability across launch vibration, vacuum, and rapid thermal transients. |
| Nuclear Plant Monitoring | Hardened Industrial PLC |
Use Scenario: Acquiring reactor coolant temperature and neutron flux signals in safety-class I&C systems requiring long-term calibration retention. IC Role / Device Role / Timing Role: Precision ADC with laser-trimmed resistor ladder and temperature-compensated reference for drift-free operation over 15+ year service life. Use Value: Full-scale calibration error ≤ ±2 LSB and unipolar offset ≤ ±1 LSB enable direct replacement of aging discrete designs without recalibration. |
Use Scenario: Digitizing analog field signals (4–20 mA, ±10 V) in explosion-proof PLC modules deployed in oil refinery control cabinets. IC Role / Device Role / Timing Role: Robust interface ADC supporting both unipolar and bipolar inputs via pin-strapping, with separate analog/digital commons for noise isolation. Use Value: Dual-common architecture and ±200 mV common-mode tolerance simplify grounding in electrically noisy industrial enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit successive approximation ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD573S | Same die, non-MIL-883B screened version; identical electrical specs but lacks military test documentation and hermetic seal verification | Approved for commercial/military derivative programs where full MIL-STD-883B compliance is not mandated | Select AD573S only if qualification documentation, lot traceability, and hermeticity testing are not required for your program |
| MAX160A | 10-bit SAR ADC with internal reference; requires +5 V only (no negative rail); 25 µs conversion time; plastic DIP package | Suitable for cost-sensitive, non-military embedded systems with less stringent temp range (0°C to +70°C) | Choose MAX160A only for commercial applications where single-supply operation and lower cost outweigh need for bipolar input and extended temperature support |
Compared with AD573S and MAX160A, the AD573SD/883B uniquely combines MIL-STD-883B qualification, hermetic ceramic packaging, guaranteed no-missing-codes over –55°C to +125°C, and native bipolar/unipolar input flexibility - making it irreplaceable in safety-critical, high-reliability analog front-ends.
Availability
AD573SD/883B is available at Aetrix Electronics and suitable for avionics sensor interface, missile guidance telemetry, nuclear plant monitoring, and hardened industrial PLC applications requiring stable component supply across extended temperature and long product lifecycles.
Supply support for AD573SD/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, founded in 1965 and headquartered in Wilmington, MA.
The AD573 family was designed specifically for high-reliability data acquisition in defense, aerospace, and industrial systems demanding guaranteed monotonicity, wide temperature operation, and minimal external component count.
FAQ
What is the guaranteed operating temperature range for the AD573SD/883B?
The AD573SD/883B is specified and tested over –55°C to +125°C, with full performance including ±1 LSB relative accuracy and no missing codes guaranteed across this entire range. This is validated per MIL-STD-883B Method 1010.8 (Temperature Cycling) and Method 1021.3 (Steady-State Life Test), distinguishing it from commercial variants like AD573J or AD573K.
Does the AD573SD/883B require external components to achieve full 10-bit accuracy?
No - the AD573SD/883B is a complete monolithic ADC subsystem. It integrates a laser-trimmed SiCr resistor ladder, temperature-compensated buried Zener reference, on-chip clock generator, comparator, successive approximation register, and three-state output buffers. No external precision resistors, references, or clocks are needed to achieve guaranteed 10-bit performance.
How is bipolar versus unipolar input range selected on the AD573SD/883B?
Bipolar (–5 V to +5 V) or unipolar (0 V to +10 V) operation is selected via Pin 16 (BIPOLAR OFFSET CONTROL): leave Pin 16 open for bipolar mode; connect Pin 16 to Pin 17 (DIGITAL COMMON) for unipolar mode. This hardware-selectable configuration avoids software overhead and ensures deterministic behavior at power-up.
What is the purpose of separate ANALOG COMMON and DIGITAL COMMON pins on the AD573SD/883B?
The AD573SD/883B uses separate analog and digital common pins to minimize noise coupling between sensitive analog circuitry (DAC, reference, comparator) and switching digital outputs (DB0–DB9, DR, HBE, LBE). Up to ±200 mV common-mode voltage is tolerated, enabling flexible PCB grounding strategies while maintaining 10-bit accuracy in electrically noisy environments.
Is the AD573SD/883B pin-compatible with other AD573 variants such as AD573JD or AD573SD?
Yes - all AD573 variants, including AD573SD/883B, AD573JD, and AD573SD, share identical pinout, package footprint (D-20 ceramic DIP), and electrical interface. Differences lie solely in screening level (MIL-STD-883B vs commercial), temperature range guarantee, and test documentation - not physical or functional compatibility.
AD573SD/883B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-CDIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- Internal
- Voltage - Supply, Analog:
- -11.4V ~ -16.5V, 4.5V ~ 7V
- Voltage - Supply, Digital:
- -11.4V ~ -16.5V, 4.5V ~ 7V
- Features:
- -
- Operating Temperature:
- -55°C ~ 125°C
- Supplier Device Package:
- 20-CDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
AD573SD/883B FAQ
1.How can I place an order for AD573SD/883B through Aetrix?
Please submit a Request for Quotation (RFQ) for AD573SD/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 AD573SD/883B reliable?
The price and inventory of AD573SD/883B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD573SD/883B is usually 5 days.
3.What payment methods are accepted for AD573SD/883B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD573SD/883B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD573SD/883B?
AD573SD/883B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD573SD/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 AD573SD/883B?
For technical support, including AD573SD/883B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD573SD/883B requirements.
6.How does Aetrix verify that AD573SD/883B is sourced from the original manufacturer or authorized distributors?
All AD573SD/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 AD573SD/883B meets industry standards.
7.What is the process for return or replacement of AD573SD/883B?
All AD573SD/883B units undergo pre-shipment inspection (PSI). If there is an issue with AD573SD/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 AD573SD/883B part is unused and in its original packaging.
Return procedure for AD573SD/883B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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