My Inquiry
My Account
Analog Devices Inc. AD674BTD/883B
- Part No.:
- AD674BTD/883B
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-CDIP (0.600", 15.24mm)
- Datasheet:
-
AD674BTD/883B.pdf
- Description:
- IC ADC 12BIT SAR 28CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,468
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD674BTD/883B from Analog Devices is a military-grade, monolithic 12-bit successive-approximation analog-to-digital converter (ADC) with integrated voltage reference, clock, and three-state output buffers. It operates across –55°C to +125°C, supports 0 V–10 V / 0 V–20 V / ±5 V / ±10 V input ranges, delivers ±1 LSB integral nonlinearity, and achieves 15 µs max conversion time. It serves in precision data acquisition within avionics, missile guidance, and ruggedized test instrumentation.
For engineers reviewing the AD674BTD/883B datasheet, AD674BTD/883B pinout, AD674BTD/883B application, or AD674BTD/883B equivalent, key selection criteria include MIL-STD-883B compliance, hermetic 28-pin ceramic DIP packaging, bipolar/unipolar range flexibility, internal 10.00 V ±1% reference, and direct 8-/16-bit microprocessor bus interface via byte-addressable or full-word read modes.
Technical Context
The AD674BTD/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 exhibits 10 ppm/°C typical temperature coefficient and supplies up to 2.0 mA externally while maintaining stability during conversion.
Control logic supports both full-control mode (using CS, CE, R/C, A0, 12/8) and standalone mode (R/C edge-triggered), with status flag (STS) indicating conversion progress. Input impedance is 5 kΩ (10 V span) or 10 kΩ (20 V span), and digital outputs comply with TTL/CMOS levels under ±12 V or ±15 V analog supplies and +5 V logic supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes with ±1/2 LSB quantization uncertainty. |
| Conversion Time | 15 µs max - enables sampling rates up to ~66.7 kSPS in burst mode with deterministic latency. |
| Input Ranges | 0 V–10 V, 0 V–20 V, ±5 V, ±10 V - selectable via external resistor configuration at BIP OFF and REF IN pins. |
| Reference Voltage | 10.00 V ±1% - factory-trimmed, temperature-compensated, drives external loads ≤2.0 mA without degrading accuracy. |
| Operating Temperature | –55°C to +125°C - qualified per MIL-STD-883B, suitable for extended-environment aerospace and defense systems. |
| Supply Voltages | +5 V (VLOGIC), +12/+15 V (VCC), –12/–15 V (VEE) - dual-supply analog section enables true bipolar signal handling. |
| Integral Linearity | ±1 LSB - guaranteed over full temperature range, ensuring monotonicity and no missing codes at 12-bit resolution. |
Pinout & Package
AD674BTD/883B is housed in a hermetically sealed 28-lead ceramic Dual In-line Package (DIP), compliant with MIL-STD-883B screening requirements. Pin layout follows industry-standard AD574A footprint for drop-in replacement in legacy military designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VLOGIC (Pin 1) | Digital power supply input | Supplies +5 V ±10% to internal CMOS logic; decoupling to DGND (Pin 15) required for noise immunity. |
| 12/8 (Pin 2) | Digital mode select input | High = 12-bit parallel output; Low = two 8-bit byte reads (MSB first, then LSB with zero-padded upper nibble). |
| CS (Pin 3) | Chip Select input | Active-low enable for device addressing in multi-converter bus systems; must be asserted before CE. |
| A0 (Pin 4) | Byte address/short cycle control | High during convert start = 8-bit cycle; Low = full 12-bit cycle; during read = selects MSB or LSB byte. |
| R/C (Pin 5) | Read/Convert control | Low = initiate conversion (standalone mode); High = enable data read (full-control mode). |
| CE (Pin 6) | Chip Enable input | Active-high strobe that gates conversion or read operation; timing-critical for bus interfacing (min pulsewidth 50 ns). |
| VCC (Pin 7) | Positive analog supply | +12 V or +15 V supply for analog circuitry; requires local 4.7 µF + 0.1 µF decoupling to AGND (Pin 9). |
| REF OUT (Pin 8) | Analog reference output | Provides trimmed 10.00 V ±1% reference; drives REF IN (Pin 10) and BIP OFF (Pin 12) resistors plus ≤2.0 mA external load. |
| AGND (Pin 9) | Analog ground | Common return for analog signals and supplies; must be isolated from DGND (Pin 15) except at single-point system ground. |
| REF IN (Pin 10) | Reference input | Connected via 50 Ω resistor to REF OUT for internal reference use; open or driven externally for alternate references. |
| VEE (Pin 11) | Negative analog supply | –12 V or –15 V supply enabling bipolar input operation; decoupled directly to AGND. |
| BIP OFF (Pin 12) | Bipolar offset adjust | Connected to REF OUT via 50 Ω for ±5 V/±10 V modes; tied to AGND for unipolar 0–10 V/0–20 V operation. |
| 10 VIN (Pin 13) | 10 V span analog input | Accepts 0–10 V (unipolar) or –5 to +5 V (bipolar); input impedance = 5 kΩ; not connected when using 20 VIN. |
| 20 VIN (Pin 14) | 20 V span analog input | Accepts 0–20 V (unipolar) or –10 to +10 V (bipolar); input impedance = 10 kΩ; not connected when using 10 VIN. |
| DGND (Pin 15) | Digital ground | Return path for VLOGIC and digital I/O; kept separate from AGND to prevent digital noise coupling into analog section. |
| DB0–DB3 (Pins 16–19) | Data output bits (LSB) | Output lower 4 bits in 12-bit mode; enabled only when A0 = HIGH during read; three-state controlled by CE/CS. |
| DB4–DB7 (Pins 20–23) | Data output bits (middle) | Output middle 4 bits in 12-bit mode; output zeros when A0 = HIGH in 8-bit read mode. |
| DB8–DB11 (Pins 24–27) | Data output bits (MSB) | Output upper 4 bits in all modes; disabled when A0 = HIGH in 8-bit read mode (DB8–DB11 float). |
| STS (Pin 28) | Status output | Active-high open-collector signal indicating conversion in progress; transitions low upon completion. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 10 V reference | 10.00 V ±1% with 10 ppm/°C drift - eliminates need for external reference IC and reduces board space and calibration complexity. |
| MIL-STD-883B qualification | Screened for mechanical shock, vibration, temperature cycling, and burn-in - ensures reliability in mission-critical defense and space applications. |
| Flexible digital interface | Supports 8-bit byte reads (A0-controlled) or 12-bit word reads (12/8-controlled) - simplifies integration with 8086, Z80, and other legacy microprocessors. |
| Laser-trimmed resistor network | Factory-calibrated scaling and bipolar offset resistors - guarantees ±1 LSB linearity and eliminates field trim requirements in most applications. |
| Three-state output buffers | Bus-compatible TTL/CMOS drive with high-impedance disable - allows direct connection to shared data buses without external transceivers. |
Applications
| Avionics Data Acquisition | Missile Guidance Sensors |
|---|---|
Use Scenario: Real-time monitoring of engine pressure, temperature, and airflow in fighter jet flight control systems. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned analog sensor outputs with deterministic 15 µs latency and MIL-spec reliability. Use Value: Enables closed-loop control updates at ≥60 kHz with guaranteed monotonicity and no missing codes across –55°C to +125°C. | Use Scenario: Converting inertial measurement unit (IMU) accelerometer and gyroscope outputs in tactical missile seekers. IC Role / Device Role / Timing Role: High-accuracy, radiation-tolerant ADC interfacing with analog front-end amplifiers in guidance electronics. Use Value: Delivers ±1 LSB linearity and stable 10 V reference under high-G vibration and thermal shock, reducing calibration drift in field-deployed munitions. |
| Ground-Based Radar Receivers | Ruggedized Test Equipment |
Use Scenario: Digitizing intermediate frequency (IF) signals in military-grade radar receivers requiring wide dynamic range. IC Role / Device Role / Timing Role: Precision ADC capturing pulsed RF envelope data with programmable 0–10 V / ±5 V input scaling. Use Value: Supports multiple calibrated input ranges via BIP OFF/REF IN configuration, eliminating external gain-switching circuitry. | Use Scenario: Embedded digitization core in portable field-test sets used for maintenance of electronic warfare systems. IC Role / Device Role / Timing Role: Standalone-mode ADC triggered by front-panel pushbutton or remote command for manual diagnostics. Use Value: R/C edge-triggered conversion and STS status flag simplify firmware design and eliminate need for polling or complex timing loops. |
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 |
|---|---|---|---|
| AD674BTD | No MIL-STD-883B screening; same pinout, specs, and package but commercial/military temp grade only (–40°C to +85°C). | Suitable for non-mission-critical industrial systems where extended temperature and radiation tolerance are not required. | Select AD674BTD/883B when full MIL-STD-883B compliance, extended temperature operation, and long-term reliability in defense platforms are mandatory. |
| AD774BTD/883B | 8 µs max conversion time (vs. 15 µs); identical pinout, reference, and interface; same MIL-STD-883B qualification level. | Preferred in high-throughput systems requiring faster sampling without changing PCB layout or firmware timing. | Choose AD774BTD/883B if system throughput demands sub-10 µs conversion latency while retaining identical form, fit, and function. |
Compared with AD674BTD and AD774BTD/883B, the AD674BTD/883B offers optimal balance of military qualification, deterministic 15 µs latency, and proven field reliability-making it the preferred choice for systems where timing predictability and environmental robustness outweigh raw speed.
Availability
AD674BTD/883B is available at Aetrix Electronics and suitable for avionics data acquisition, missile guidance sensors, ground-based radar receivers, and ruggedized test equipment requiring stable component supply under extended temperature and high-reliability conditions.
Supply support for AD674BTD/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 defense markets since 1965.
The AD674BTD/883B belongs to Analog Devices' legacy military-grade data acquisition product line, engineered specifically for high-accuracy, high-reliability analog-to-digital conversion in harsh-environment defense electronics.
FAQ
What is the maximum conversion time specification for AD674BTD/883B?
The AD674BTD/883B has a maximum conversion time of 15 µs across its full operating temperature range of –55°C to +125°C. This value is guaranteed per MIL-STD-883B test conditions and applies to the full 12-bit conversion cycle initiated when A0 is held LOW during the convert command. The timing is deterministic and independent of input signal level.
Does AD674BTD/883B require external calibration components?
The AD674BTD/883B includes factory-laser-trimmed thin-film resistors for scaling and bipolar offset, so external calibration is optional. For unipolar operation, connecting BIP OFF (Pin 12) to AGND (Pin 9) suffices. Full-scale trim requires only a 50 Ω 1% resistor between REF OUT and REF IN. No active trimming circuitry is needed unless system-level accuracy exceeds ±1 LSB.
How does the AD674BTD/883B support both unipolar and bipolar input ranges?
The AD674BTD/883B supports unipolar (0 V–10 V, 0 V–20 V) and bipolar (±5 V, ±10 V) ranges through external resistor configuration: tie BIP OFF (Pin 12) to AGND for unipolar; connect it to REF OUT via 50 Ω for bipolar. Input is applied to either 10 VIN (Pin 13) or 20 VIN (Pin 14), with corresponding input impedances of 5 kΩ or 10 kΩ.
Is AD674BTD/883B pin-compatible with the AD574A?
Yes, the AD674BTD/883B uses the exact same 28-pin DIP footprint and signal assignments as the industry-standard AD574A. This enables drop-in replacement in legacy military systems, preserving PCB layout while delivering improved performance: 15 µs conversion (vs. 35 µs), lower power, and enhanced linearity (±1 LSB vs. ±0.5 LSB typical).
What power supply configurations are required for AD674BTD/883B operation?
The AD674BTD/883B requires three independent supplies: +5 V (VLOGIC, Pin 1), +12 V or +15 V (VCC, Pin 7), and –12 V or –15 V (VEE, Pin 11). Decoupling is mandatory - a 4.7 µF tantalum + 0.1 µF ceramic capacitor pair must be placed between VCC and AGND (Pin 9), and similarly between VEE and AGND; VLOGIC requires identical decoupling to DGND (Pin 15).
AD674BTD/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:
- 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:
- -
AD674BTD/883B FAQ
1.How can I place an order for AD674BTD/883B through Aetrix?
Please submit a Request for Quotation (RFQ) for AD674BTD/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 AD674BTD/883B reliable?
The price and inventory of AD674BTD/883B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD674BTD/883B is usually 5 days.
3.What payment methods are accepted for AD674BTD/883B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD674BTD/883B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD674BTD/883B?
AD674BTD/883B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD674BTD/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 AD674BTD/883B?
For technical support, including AD674BTD/883B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD674BTD/883B requirements.
6.How does Aetrix verify that AD674BTD/883B is sourced from the original manufacturer or authorized distributors?
All AD674BTD/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 AD674BTD/883B meets industry standards.
7.What is the process for return or replacement of AD674BTD/883B?
All AD674BTD/883B units undergo pre-shipment inspection (PSI). If there is an issue with AD674BTD/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 AD674BTD/883B part is unused and in its original packaging.
Return procedure for AD674BTD/883B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD674BTD/883B Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
