ADC912BW/883 - 12-Bit CMOS ADC | Analog Devices | Military
MPN: ADC912BW/883 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $45 | $45.00 |
| 10 | $40 | $400.00 |
| 100 | $35 | $3,500.00 |
| 500 | $30 | $15,000.00 |
| 1,000 | $25 | $25,000.00 |
Drop-in alternatives for ADC912BW/883 — 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:
ADC912A
✅ Drop-In📋 Reference alternative (not in catalog)
ADC912B
✅ Drop-In📋 Reference alternative (not in catalog)
AD7892-1
✅ Drop-In📋 Reference alternative (not in catalog)
AD7892-2
✅ Drop-In📋 Reference alternative (not in catalog)
AD7891
✅ Drop-In📋 Reference alternative (not in catalog)
ADC912BW/883 Maximum Ratings & Electrical Characteristics
| Resolution | 12 bit |
| Conversion Time | 13.5 us |
| Integral Linearity Error | 0.0122% |
| Supply Voltage | 5 V |
| Technology | CMOS |
| Operating Temperature Range | -55°C to +125°C |
| Maximum Operating Temperature | 125 °C |
| Package Code | DIP |
| Package Shape | RECTANGULAR |
| Terminal Form | THROUGH-HOLE |
| Number of Terminals | 24 |
| Temperature Grade | MILITARY |
| Output Format | Binary / Offset Binary |
| Mounting Type | Through Hole |
| RoHS Status | unknown |
ADC912BW/883 Pin Configuration
| Pin 1 | VREF — Reference voltage input |
| Pin 2 | AGND — Analog ground |
| Pin 3 | VIN — Analog input |
| Pin 4 | VIN- — Inverting analog input |
| Pin 5 | VIN+ — Non-inverting analog input |
| Pin 6 | DGND — Digital ground |
| Pin 7 | VCC — Positive supply voltage (+5V) |
| Pin 8 | VEE — Negative supply voltage |
| Pin 9 | SC — Start conversion input |
| Pin 10 | EOC — End of conversion output |
| Pin 11 | DB0 — Data bit 0 (LSB) |
| Pin 12 | DB1 — Data bit 1 |
| Pin 13 | DB2 — Data bit 2 |
| Pin 14 | DB3 — Data bit 3 |
| Pin 15 | DB4 — Data bit 4 |
| Pin 16 | DB5 — Data bit 5 |
| Pin 17 | DB6 — Data bit 6 |
| Pin 18 | DB7 — Data bit 7 |
| Pin 19 | DB8 — Data bit 8 |
| Pin 20 | DB9 — Data bit 9 |
| Pin 21 | DB10 — Data bit 10 |
| Pin 22 | DB11 — Data bit 11 (MSB) |
| Pin 23 | CS — Chip select input |
| Pin 24 | RD — Read input |
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
ADC912BW/883 is suitable for 6 applications: Military Avionics, Radar Systems, Industrial Process Control, Data Acquisition Systems, Test and Measurement Equipment, Medical Monitoring.
Military Avionics
The ADC912BW/883 is ideal for military avionics systems due to its military temperature range (-55°C to +125°C) and high reliability. It converts analog sensor signals from flight control systems, navigation, and engine monitoring into digital data for processing. Its 12-bit resolution and 13.5 us conversion time provide sufficient accuracy and speed for real-time control. The through-hole DIP package ensures robust mechanical connection in harsh vibration environments. Designers can interface it directly with microprocessors via the three-state bus, simplifying data acquisition.
Recommended
Radar Systems
In radar systems, the ADC912BW/883 digitizes intermediate frequency (IF) signals for target detection and tracking. Its 12-bit resolution provides fine amplitude discrimination, while the 13.5 us conversion time supports moderate sampling rates. The military temperature range ensures operation in extreme environmental conditions. The device's CMOS technology offers low power consumption, critical for portable or battery-powered radar units. The binary output format simplifies interfacing with digital signal processors (DSPs) for further processing.
Recommended
Industrial Process Control
The ADC912BW/883 is suitable for industrial process control systems that require high accuracy and reliability. It converts analog signals from temperature, pressure, and flow sensors into digital values for monitoring and control. Its 12-bit resolution and low integral linearity error (0.0122%) ensure precise measurement. The wide operating temperature range allows deployment in harsh industrial environments. The through-hole package is easy to replace in legacy systems, making it a practical choice for upgrades.
Recommended
Data Acquisition Systems
The ADC912BW/883 is a core component in data acquisition systems, converting analog signals from various sensors into digital data for logging and analysis. Its 12-bit resolution provides good dynamic range, and the 13.5 us conversion time allows sampling rates up to 74 kSPS. The three-state bus interface enables easy connection to microcontrollers or PCs. The military temperature range ensures reliable operation in field data loggers used in extreme conditions. The device's low power consumption is beneficial for battery-powered systems.
Recommended
Test and Measurement Equipment
The ADC912BW/883 is used in test and measurement equipment such as digital multimeters, oscilloscopes, and spectrum analyzers. Its 12-bit resolution and low linearity error ensure accurate measurements. The 13.5 us conversion time is adequate for many benchtop instruments. The military temperature range allows use in environmental test chambers. The through-hole package is compatible with prototyping boards, facilitating design and testing. The binary output format simplifies integration with display and processing circuits.
Recommended
Medical Monitoring
The ADC912BW/883 can be used in medical monitoring equipment that requires high precision and reliability. It converts analog signals from sensors such as ECG, EEG, and blood pressure monitors into digital data for analysis. Its 12-bit resolution provides fine detail, and the low power consumption is suitable for portable devices. The military temperature range ensures operation in various clinical environments. The through-hole package is easy to service, making it suitable for equipment with long service life.
Recommended
Recommended Products Summary
Engineering reference data for ADC912BW/883 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADC912A | ADC912B | AD7892-1 | AD7892-2 | AD7891 |
|---|---|---|---|---|---|---|
| Package | DIP-24 | DIP-24 | DIP-24 | DIP-24 | DIP-24 | DIP-24 |
| 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 | 13.5 us | 13.5 us | 13.5 us | 1.67 us | 1.67 us | 2 us |
| Temperature Range | -55°C to +125°C | 0°C to +70°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Interface | Parallel | Parallel | Parallel | Parallel | Serial | Parallel |
| Number of Channels | 1 | 1 | 1 | 1 | 1 | 8 |
Key Differentiators
- Military temperature range (vs ADC912A)
- Through-hole DIP package (vs AD7892-1)
- Proven reliability (vs AD7891)
Design Notes
The ADC912BW/883 requires a +5V supply for digital logic and a separate analog supply for the internal converter. Use separate analog and digital ground planes to minimize noise coupling. Decouple the power supply pins with 0.1uF ceramic capacitors placed close to the device, and use a 10uF tantalum capacitor for bulk decoupling. Ensure the reference voltage is stable and noise-free, as it directly affects conversion accuracy.
For optimal performance, place the ADC912BW/883 on a PCB with a solid ground plane. Keep analog input traces short and shielded from digital signals to prevent noise pickup. Use a star-ground topology to connect analog and digital grounds at a single point. The through-hole package allows for easy prototyping, but for production, consider using sockets to facilitate replacement.
A common pitfall is driving the analog input with a high-impedance source, which can cause sampling errors. Use a buffer amplifier with low output impedance to drive the ADC input. Also, ensure the conversion start (SC) signal is properly timed to avoid metastability. The EOC output should be monitored to ensure data is read only after conversion is complete.
Compliance Information
Compliance data not provided in verified sources. This is an obsolete military-grade part, likely manufactured before RoHS requirements.
