AD574ASE/883B - 12-Bit SAR ADC, Military Grade | Analog Devices
MPN: AD574ASE/883B ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $150 | $150.00 |
| 10 | $135 | $1,350.00 |
| 100 | $120 | $12,000.00 |
| 500 | $105 | $52,500.00 |
| 1,000 | $95 | $95,000.00 |
Drop-in alternatives for AD574ASE/883B — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD574AUD/883B
✅ Drop-In📋 Reference alternative (not in catalog)
AD574ASE/883B Maximum Ratings & Electrical Characteristics
| Resolution | 12 Bit |
| Number of Inputs | 1 |
| Input Type | Single Ended |
| Architecture | SAR |
| Conversion Time | 35 µs (max) |
| Input Voltage Range | -10 V to +10 V |
| Interface | Parallel |
| Data Bus Width | 8-bit / 16-bit |
| Reference Type | Internal |
| Operating Temperature Range | -55°C to +125°C |
| Package Type | 28-LCC (11.43x11.43 mm) |
| Mounting Type | Surface Mount |
| Screening Level | MIL-STD-883 Class B |
| Supply Voltage | 5 V (logic), ±12 V / ±15 V (analog) |
| RoHS Status | Non-compliant (military grade) |
AD574ASE/883B Pin Configuration
| Pin 1 | VLOGIC — Logic supply voltage (5V) |
| Pin 2 | 12/8 — Data bus width select (12-bit or 8-bit) |
| Pin 3 | CS — Chip select (active low) |
| Pin 4 | A0 — Address input for byte selection |
| Pin 5 | R/C — Read/Convert input |
| Pin 6 | CE — Chip enable (active high) |
| Pin 7 | VEE — Negative analog supply (-12V or -15V) |
| Pin 8 | REF OUT — Reference output (10V) |
| Pin 9 | AGND — Analog ground |
| Pin 10 | REF IN — Reference input |
| Pin 11 | VCC — Positive analog supply (+12V or +15V) |
| Pin 12 | BIP OFF — Bipolar offset input |
| Pin 13 | 10V IN — Analog input for 0-10V range |
| Pin 14 | 20V IN — Analog input for -10V to +10V range |
| Pin 15 | DGND — Digital ground |
| Pin 16 | DB0 — Data bit 0 (LSB) |
| Pin 17 | DB1 — Data bit 1 |
| Pin 18 | DB2 — Data bit 2 |
| Pin 19 | DB3 — Data bit 3 |
| Pin 20 | DB4 — Data bit 4 |
| Pin 21 | DB5 — Data bit 5 |
| Pin 22 | DB6 — Data bit 6 |
| Pin 23 | DB7 — Data bit 7 |
| Pin 24 | DB8 — Data bit 8 |
| Pin 25 | DB9 — Data bit 9 |
| Pin 26 | DB10 — Data bit 10 |
| Pin 27 | DB11 — Data bit 11 (MSB) |
| Pin 28 | STS — Status output (busy) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
AD574ASE/883B is suitable for 6 applications: Military Avionics, Industrial Process Control, Test and Measurement Equipment, Aerospace Data Acquisition, Radar Systems, Medical Imaging (Legacy).
Military Avionics
The AD574ASE/883B is ideal for military avionics systems due to its MIL-STD-883 Class B screening and wide operating temperature range of -55°C to +125°C. It provides 12-bit resolution with a 35 µs conversion time, enabling accurate digitization of sensor signals in flight control and navigation systems. The internal reference and clock reduce external component count, enhancing reliability in space-constrained avionics modules. Its parallel interface simplifies connection to mission computers, and the bipolar input range of -10V to +10V accommodates various analog sensors without additional signal conditioning.
Recommended
Industrial Process Control
In industrial process control, the AD574ASE/883B offers reliable 12-bit conversion for monitoring and control loops. Its 35 µs conversion time supports sampling rates up to ~28 kSPS, sufficient for many process variables like temperature, pressure, and flow. The device's wide input range and internal reference simplify interface to 4-20 mA loops and sensor bridges. The military-grade temperature range ensures operation in harsh factory environments. The parallel bus interface allows easy integration with PLCs and industrial microcontrollers, and the 3-state outputs enable bus sharing in multi-channel systems.
Recommended
Test and Measurement Equipment
The AD574ASE/883B is well-suited for test and measurement equipment such as data loggers and digital multimeters. Its 12-bit resolution and 35 µs conversion time provide a good balance of speed and accuracy for general-purpose measurements. The internal reference ensures stable readings over temperature, and the bipolar input range allows direct measurement of both positive and negative signals. The parallel interface enables fast data transfer to DSPs or FPGAs. The device's robustness and long-term availability make it a reliable choice for professional instruments.
Recommended
Aerospace Data Acquisition
For aerospace data acquisition systems, the AD574ASE/883B provides a proven, radiation-tolerant ADC solution. Its MIL-STD-883 screening ensures high reliability in space and high-altitude applications. The 12-bit resolution and 35 µs conversion time are adequate for telemetry and payload data. The wide temperature range and ceramic package offer excellent thermal stability. The internal reference and clock minimize external parts, which is critical for weight and space constraints. The parallel interface allows direct connection to spacecraft computers, and the device's heritage in military systems instills confidence in mission-critical designs.
Recommended
Radar Systems
In radar systems, the AD574ASE/883B can digitize analog signals from receivers and signal processors. Its 12-bit resolution provides good dynamic range for radar return signals, and the 35 µs conversion time is sufficient for many radar processing tasks. The device's military-grade temperature range and screening make it suitable for deployed radar units. The bipolar input range allows direct connection to IF signals. The parallel interface enables high-speed data transfer to digital signal processors, and the internal reference ensures consistent performance across temperature variations.
Recommended
Medical Imaging (Legacy)
Although newer ADCs offer higher performance, the AD574ASE/883B is still used in legacy medical imaging equipment such as older ultrasound and X-ray machines. Its 12-bit resolution and 35 µs conversion time are adequate for many imaging modalities. The military-grade reliability ensures long service life in critical medical devices. The internal reference and clock simplify calibration, and the parallel interface allows integration with existing digital backplanes. For maintenance and repair of legacy systems, this ADC is a reliable replacement part.
Recommended
Recommended Products Summary
Engineering reference data for AD574ASE/883B — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD574ATD/883B | AD574AUD/883B | AD574ASD/883B | AD1674TD/883B | AD674BTD/883B |
|---|---|---|---|---|---|---|
| Package | 28-LCC (11.43x11.43) | 28-CDIP | 28-LCC (11.43x11.43) | 28-CDIP | 28-CDIP | 28-CDIP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit |
| Conversion Time | 35 µs | 35 µs | 35 µs | 35 µs | 10 µs | 15 µs |
| Input Voltage Range | -10V to +10V | -10V to +10V | -10V to +10V | -10V to +10V | -10V to +10V | -10V to +10V |
| Operating Temperature | -55°C to +125°C | -55°C to +125°C | -55°C to +125°C | -55°C to +125°C | -55°C to +125°C | -55°C to +125°C |
| Interface | Parallel 8/16-bit | Parallel 8/16-bit | Parallel 8/16-bit | Parallel 8/16-bit | Parallel 8/16-bit | Parallel 8/16-bit |
| Internal Reference | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Military-grade screening (MIL-STD-883 Class B) (vs AD574AUD/883B)
- Surface-mount LCC package (vs AD574ATD/883B)
- Complete converter with internal reference and clock (vs AD1674TD/883B)
Design Notes
The AD574ASE/883B requires a +5V logic supply and dual analog supplies of ±12V or ±15V. Ensure that the analog supplies are well-regulated and decoupled with 0.1µF ceramic capacitors close to the VCC and VEE pins. The logic supply should be decoupled with a 0.1µF capacitor as well. Proper power supply sequencing is recommended to avoid latch-up.
For optimal performance, use a solid analog ground plane and separate digital ground plane, connecting them at a single point. Place the ADC close to the signal source to minimize trace length and noise pickup. Keep analog input traces away from digital traces to reduce crosstalk. Use a ground plane under the ADC to provide a low-impedance return path.
Do not exceed the absolute maximum ratings for the input voltage or supply voltages. The input voltage range is -10V to +10V; applying voltages beyond this can damage the device. Ensure that the reference output is not loaded excessively. Also, be aware that the conversion time is 35 µs; do not initiate a new conversion before the previous one is complete.
Compliance Information
Military-grade component, typically exempt from RoHS due to lead in ceramic package and solder. Not AEC-Q100 qualified as it is not an automotive part.
