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Analog Devices Inc. AD674BTE/883B
- Part No.:
- AD674BTE/883B
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-CDIP (0.600", 15.24mm)
- Datasheet:
-
AD674BTE/883B.pdf
- Description:
- IC ADC 12BIT SAR 28CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,796
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Product details
Overview
AD674BTE/883B from Analog Devices is a complete monolithic 12-bit successive-approximation analog-to-digital converter with integrated voltage reference, clock, and three-state digital output buffers. It supports 0 V–10 V, 0 V–20 V, ±5 V, and ±10 V input ranges; operates on +5 V logic, ±12 V/±15 V analog supplies; and delivers ≤15 µs max conversion time. It is used in precision data acquisition systems requiring MIL-STD-883 compliance and stable performance across –55°C to +125°C.
For engineers reviewing the AD674BTE/883B datasheet, AD674BTE/883B pinout, AD674BTE/883B application, or AD674BTE/883B equivalent, key selection considerations include its military-grade temperature range, built-in 10 V reference (±1% initial accuracy, 10 ppm/°C TC), 12-bit no-missing-codes guarantee, and direct interface capability with 8-/16-bit microprocessor buses via byte-addressable or full-word read modes.
Technical Context
The AD674BTE/883B implements a SAR architecture with on-chip 12-bit current-output DAC, comparator, and laser-trimmed thin-film resistor network for scaling and bipolar offset. Its internal 10 V reference drives both the DAC and external loads up to 2.0 mA while maintaining stability over temperature.
Control logic supports full-control mode (CS/CE/R/C coordinated) and standalone mode (R/C edge-triggered), with configurable 8-bit or 12-bit data output via A0 and 12/8 pins. Input impedance is 5 kΩ (10 V span) or 10 kΩ (20 V span); unipolar offset error is ≤2 LSB at 25°C and ≤2 LSB over full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees monotonic 4096 distinct output codes with no missing codes over full temperature range. |
| Conversion Time | ≤15 µs max - enables ≥66 kSPS sustained sampling in high-reliability embedded control loops. |
| Input Ranges | 0 V–10 V, 0 V–20 V, ±5 V, ±10 V - selectable via external connections without external op amps or gain stages. |
| Reference Voltage | 10.00 V ±1% (typ 10 ppm/°C) - internally trimmed, available at REF OUT, supports 2.0 mA external load beyond internal circuitry. |
| Supply Voltages | +5 V (VLOGIC), +12 V/+15 V (VCC), –12 V/–15 V (VEE) - decoupling required per pin to maintain 12-bit accuracy under dynamic load. |
| Linearity Error | ±1 LSB max (T grade) - ensures code transitions remain within 1 LSB of ideal straight-line transfer function from –55°C to +125°C. |
| Power Consumption | 220–375 mW - varies with supply voltage; tested at VCC = +16.5 V, VEE = –16.5 V, VLOGIC = +5.5 V, outputs in high-Z. |
Pinout & Package
AD674BTE/883B is supplied in a 28-lead hermetically sealed ceramic DIP package (package option D-28), compliant with MIL-STD-883 requirements for military applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VLOGIC (Pin 1) | Digital power supply input | Supplies +5 V logic core; must be decoupled directly to DGND (Pin 15) with 4.7 µF + 0.1 µF. |
| 12/8 (Pin 2) | Digital input | Selects 12-bit word (HIGH) or two 8-bit bytes (LOW); determines DB11–DB0 data organization during read cycles. |
| CS (Pin 3) | Digital input | Active LOW chip select; initiates bus arbitration and enables CE/R/C decoding when asserted. |
| A0 (Pin 4) | Digital input | Controls conversion length (LOW = 12-bit, HIGH = 8-bit) and byte addressing during reads (LOW = DB11–DB8 enabled). |
| R/C (Pin 5) | Digital input | Active HIGH = read, ACTIVE LOW = convert in full-control mode; falling edge triggers conversion in standalone mode. |
| CE (Pin 6) | Digital input | Active HIGH chip enable; starts conversion or read cycle only when CS is active and timing constraints met. |
| VCC (Pin 7) | Analog power supply input | +12 V or +15 V analog supply; must be decoupled to AGND (Pin 9) to prevent noise-induced code errors. |
| REF OUT (Pin 8) | Analog output | 10 V reference output; drives internal DAC, bipolar offset resistors, and up to 2.0 mA external load-must remain constant during conversion. |
| AGND (Pin 9) | Analog ground | Common return for analog circuitry; physically isolated from DGND to minimize digital noise coupling into ADC core. |
| REF IN (Pin 10) | Analog input | Reference input node; connected via 50 Ω resistor to REF OUT for internal reference use; open or misconnected causes calibration failure. |
| VEE (Pin 11) | Analog power supply input | –12 V or –15 V analog supply; decoupling to AGND is mandatory for bipolar operation stability. |
| BIP OFF (Pin 12) | Analog input | Bipolar offset adjustment node; tied to REF OUT via 50 Ω for ±5 V/±10 V operation, or to AGND for unipolar mode. |
| 10 VIN (Pin 13) | Analog input | 0 V–10 V unipolar or ±5 V bipolar input; 5 kΩ input impedance; not connected when using 20 V span. |
| 20 VIN (Pin 14) | Analog input | 0 V–20 V unipolar or ±10 V bipolar input; 10 kΩ input impedance; not connected when using 10 V span. |
| DGND (Pin 15) | Digital ground | Common return for digital I/O; isolated from AGND to preserve SNR; connected to system digital plane. |
| DB0–DB3 (Pins 16–19) | Digital output | LSB nibble; active only when A0 = HIGH in 8-bit mode or always active in 12-bit mode. |
| DB4–DB7 (Pins 20–23) | Digital output | Middle nibble; active when A0 = LOW in 8-bit mode; zero-padded when A0 = HIGH. |
| DB8–DB11 (Pins 24–27) | Digital output | MSB nibble; active when A0 = LOW in 8-bit mode; disabled when A0 = HIGH. |
| STS (Pin 28) | Digital output | Status flag; HIGH during conversion, LOW when result ready; used for polling or interrupt-driven data capture. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 10 V reference | Trimmed to 10.00 V ±1% with 10 ppm/°C typical drift-eliminates need for external reference and reduces BOM count in ruggedized DAQ designs. |
| Four calibrated input ranges | Hardware-selectable 0 V–10 V, 0 V–20 V, ±5 V, ±10 V-enables single-part support across multiple sensor types without external signal conditioning. |
| Three-state output buffers | Configurable 8-/12-bit data output with byte addressing-directly interfaces to 8-bit (Z80, 8085) and 16-bit (8086, MC68000) microprocessor buses without glue logic. |
| MIL-STD-883B compliance | Fully screened per Method 5005 for thermal shock, vibration, and burn-in-certified for flight-critical avionics and defense electronics where lifecycle traceability is mandatory. |
| Laser-trimmed thin-film resistors | Factory-trimmed scaling and offset networks-guarantees ≤1 LSB linearity error and ≤2 LSB unipolar offset over –55°C to +125°C without user calibration. |
Applications
| Avionics Data Acquisition | Industrial Process Monitoring |
|---|---|
Use Scenario: Real-time monitoring of engine temperature, pressure, and vibration signals in military aircraft flight control systems. IC Role / Device Role / Timing Role: Primary 12-bit ADC capturing analog sensor outputs with guaranteed no-missing-codes performance under extreme thermal cycling. Use Value: Enables deterministic sampling at ≤15 µs intervals across –55°C to +125°C, meeting DO-160E environmental test requirements for airborne equipment. | Use Scenario: High-accuracy analog input module in programmable logic controller (PLC) backplanes for factory automation. IC Role / Device Role / Timing Role: Standalone-mode ADC interfacing to industrial sensors (4–20 mA transmitters, RTDs) via precision input dividers. Use Value: Eliminates external reference and clock components, reducing board area by >30% while maintaining ±1 LSB linearity over –40°C to +85°C extended industrial range. |
| Test & Measurement Equipment | Defense Radar Signal Conditioning |
Use Scenario: Digitizing calibrated reference waveforms in automated test equipment (ATE) for semiconductor device validation. IC Role / Device Role / Timing Role: Precision ADC in calibration subsystem, reading thermally stable voltage standards with <0.1% full-scale error. Use Value: Internal 10 V reference (±1%, 10 ppm/°C) provides traceable accuracy without periodic recalibration-reducing maintenance downtime by 40%. | Use Scenario: Analog front-end digitization of IF signals in ground-based radar receivers operating in harsh electromagnetic environments. IC Role / Device Role / Timing Role: Radiation-tolerant ADC converting low-noise amplified IF outputs with fast settling and minimal code flicker. Use Value: Hermetic ceramic DIP packaging and MIL-STD-883B screening ensure operational integrity after 100 krad(Si) total ionizing dose exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD674BTD | Same die, identical specs, but screened to MIL-STD-883 Class B (not Class B with T suffix); lacks full 883B certification documentation. | Acceptable for non-flight hardware where full 883B traceability is not mandated (e.g., ground support equipment). | Select AD674BTE/883B when full 883B compliance with Method 5005 screening and certified lot traceability is contractually required. |
| AD1674TQ | Pin-compatible 12-bit sampling ADC with 10 µs conversion time; includes internal sample-and-hold; requires external reference. | Preferred when input signal bandwidth exceeds 100 kHz and hold-mode acquisition is needed to avoid aperture jitter. | Choose AD1674TQ only if sampling rate >66 kSPS and external reference sourcing is acceptable; AD674BTE/883B remains superior for DC-precision and reference-integrated simplicity. |
Compared with AD674BTD and AD1674TQ, AD674BTE/883B uniquely combines MIL-STD-883B-certified screening, fully integrated 10 V reference, and guaranteed no-missing-codes performance across –55°C to +125°C-making it the sole choice for mission-critical analog digitization where certification, self-containment, and thermal robustness are non-negotiable.
Availability
AD674BTE/883B is available at Aetrix Electronics and suitable for avionics data acquisition, industrial process monitoring, and defense radar signal conditioning requiring stable component supply across extended temperature and radiation-hardened environments.
Supply support for AD674BTE/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 AD674BTE/883B belongs to Analog Devices' legacy high-reliability data acquisition product line, designed specifically for military and aerospace applications demanding guaranteed 12-bit accuracy, wide temperature operation, and full MIL-STD-883B compliance.
FAQ
What is the maximum conversion time specification for AD674BTE/883B?
The AD674BTE/883B has a maximum conversion time of 15 µs for a full 12-bit cycle, as specified in the MIL-STD-883B-compliant datasheet. This value is guaranteed over the full operating temperature range of –55°C to +125°C and applies to all grades screened to this standard. The 15 µs limit enables sustained sampling rates up to approximately 66 kSPS in time-critical embedded systems.
Does AD674BTE/883B require external clock or reference components?
No, AD674BTE/883B does not require external clock or reference components. It integrates a temperature-compensated 10 V reference (trimmed to ±1% accuracy) and an on-chip clock generator. The REF OUT pin provides the 10 V reference for internal use and can drive up to 2.0 mA of external load, eliminating the need for discrete reference ICs or crystal oscillators in most implementations.
How is bipolar operation configured on AD674BTE/883B?
Bipolar operation on AD674BTE/883B is configured by connecting the BIP OFF pin (Pin 12) to REF OUT via a 50 Ω resistor, and applying the analog signal to either 10 VIN (for ±5 V range) or 20 VIN (for ±10 V range). The internal laser-trimmed bipolar offset network ensures ≤6 LSB unipolar offset error at 25°C and ≤3 LSB over temperature, enabling accurate zero-centered digitization without manual trimming in many cases.
What package type is used for AD674BTE/883B?
AD674BTE/883B is supplied in a 28-lead hermetically sealed ceramic dual-in-line package (DIP), designated as package option D-28. This package meets MIL-STD-883B mechanical and environmental requirements, including thermal shock, mechanical shock, and hermeticity testing, making it suitable for high-reliability aerospace and defense applications.
Can AD674BTE/883B interface directly with an 8-bit microprocessor bus?
Yes, AD674BTE/883B supports direct interface with 8-bit microprocessor buses via its flexible digital interface. Using the A0 and 12/8 pins, it can output data as two 8-bit bytes (high byte on DB11–DB8, low byte on DB3–DB0 with DB7–DB4 zero-padded), enabling seamless connection to Z80, 8085, and similar architectures without address latches or data bus transceivers.
AD674BTE/883B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-CDIP (0.600", 15.24mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- 2
- 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:
- -
- Qualification:
- -
AD674BTE/883B FAQ
1.How can I place an order for AD674BTE/883B through Aetrix?
Please submit a Request for Quotation (RFQ) for AD674BTE/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 AD674BTE/883B reliable?
The price and inventory of AD674BTE/883B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD674BTE/883B is usually 5 days.
3.What payment methods are accepted for AD674BTE/883B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD674BTE/883B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD674BTE/883B?
AD674BTE/883B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD674BTE/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 AD674BTE/883B?
For technical support, including AD674BTE/883B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD674BTE/883B requirements.
6.How does Aetrix verify that AD674BTE/883B is sourced from the original manufacturer or authorized distributors?
All AD674BTE/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 AD674BTE/883B meets industry standards.
7.What is the process for return or replacement of AD674BTE/883B?
All AD674BTE/883B units undergo pre-shipment inspection (PSI). If there is an issue with AD674BTE/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 AD674BTE/883B part is unused and in its original packaging.
Return procedure for AD674BTE/883B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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