AD574ATE/883B - 12-Bit SAR ADC, Military Grade | Analog Devices
MPN: AD574ATE/883B ✓ Hoạt độngAD574ATE/883B Tóm tắt
An analog-to-digital converter (ADC) is an electronic component that converts continuous analog signals into discrete digital numbers. The AD574A is a successive-approximation ADC, which uses a binary search algorithm to determine the digital output, offering a good balance of speed and resolution. As a 12-bit ADC, it provides 4096 discrete levels, enabling high-resolution measurement of analog signals. This device belongs to the family of data acquisition components, which are essential in bridging the analog and digital domains in systems such as industrial process control, military avionics, and scientific instrumentation.
Key features of the AD574ATE/883B include 12-bit resolution, a single input channel, and a successive-approximation register (SAR) architecture. It operates from a bipolar power supply, and its parallel word access allows for fast data transfer to microprocessors. The device is available in a 28-LCC package, which is suitable for surface-mount assembly and provides good thermal and electrical performance. The military-grade processing ensures reliability in harsh environments, with a temperature grade of MILITARY, indicating operation from -55°C to +125°C.
Technically, the AD574A integrates a precision voltage reference and clock on-chip, eliminating the need for external components. The Bipolar/I2L process enables high-speed operation and low power consumption. The device includes a 3-state output buffer, allowing direct connection to a microprocessor bus without additional interface logic. The conversion time is typically 25 microseconds, providing a throughput of 40 kSPS. The device also features a status output to indicate when conversion is complete, simplifying system integration.
Typical applications include military avionics, industrial process control, medical instrumentation, and scientific data acquisition systems. The AD574ATE/883B is particularly suited for applications requiring high accuracy and reliability in extreme environments, such as aerospace and defense systems. Its parallel interface simplifies connection to microcontrollers and DSPs, making it a versatile choice for embedded systems.
When designing with this device, ensure proper decoupling of the power supply pins and a clean analog ground to achieve specified accuracy. The reference voltage is internally generated, but external filtering may be required for optimal performance. The device is not RoHS compliant due to its military-grade hermetic package, which is a consideration for applications with environmental compliance requirements.
Bộ thay thế dễ dàng lắp đặt cho AD574ATE/883B — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với AD574ATE/883B (cùng hình factor và footprint) — khác nhau ở RoHS Status, Supply Voltage.
AD574AUD/883B
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD574ASE/883B
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →AD574ATE/883B Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 12 bit |
| Number of Inputs | 1 |
| Input Type | Single Ended |
| Architecture | SAR |
| Data Interface | Parallel |
| Reference Type | Internal |
| Điện áp cung cấp | 5V, ±12V/±15V |
| Nhiệt độ hoạt động | -55°C to +125°C |
| Hộp | 28-LCC (11.43x11.43) |
| Kiểu lắp đặt | Surface Mount |
| Temperature Grade | Military |
| Terminal Form | No Lead |
| Number of Terminals | 28 |
| Package Code | QCCN |
| Package Shape | Square |
| Trạng thái RoHS | Non-compliant |
| MIL-STD-883C | Class B |
Cấu hình chân AD574ATE/883B
| Chân 1 | VLOGIC — Logic supply voltage |
| Chân 2 | 12/8 — Data format select |
| Chân 3 | CS — Chip select |
| Chân 4 | R/C — Read/convert |
| Chân 5 | CE — Chip enable |
| Chân 6 | VEE — Negative supply |
| Chân 7 | REF OUT — Reference output |
| Chân 8 | AGND — Analog ground |
| Chân 9 | REF IN — Reference input |
| Chân 10 | VCC — Positive supply |
| Chân 11 | BIP OFF — Bipolar offset |
| Chân 12 | 10V IN — 10V analog input |
| Chân 13 | 20V IN — 20V analog input |
| Chân 14 | DGND — Digital ground |
| Chân 15 | DB0 — Data bit 0 (LSB) |
| Chân 16 | DB1 — Data bit 1 |
| Chân 17 | DB2 — Data bit 2 |
| Chân 18 | DB3 — Data bit 3 |
| Chân 19 | DB4 — Data bit 4 |
| Chân 20 | DB5 — Data bit 5 |
| Chân 21 | DB6 — Data bit 6 |
| Chân 22 | DB7 — Data bit 7 |
| Chân 23 | DB8 — Data bit 8 |
| Chân 24 | DB9 — Data bit 9 |
| Chân 25 | DB10 — Data bit 10 |
| Chân 26 | DB11 — Data bit 11 (MSB) |
| Chân 27 | STS — Status output |
| Chân 28 | NC — No connect |
Ứng dụng tiêu biểu
AD574ATE/883B phù hợp cho 6 Áp dụngs: Military Avionics, Industrial Process Control, Medical Instrumentation, Scientific Data Acquisition, Aerospace and Defense, Test and Measurement.
Military Avionics
The AD574ATE/883B is ideal for military avionics data acquisition systems due to its MIL-STD-883C Class B processing and wide operating temperature range of -55°C to +125°C. Its 12-bit resolution and parallel interface enable precise conversion of analog sensor signals for flight control and navigation systems. The ceramic LCC package ensures reliability under vibration and thermal stress, making it suitable for harsh aerospace environments.
Được đề xuất
Industrial Process Control
In industrial process control, the AD574ATE/883B provides high-accuracy conversion of analog signals from sensors such as temperature, pressure, and flow. Its 12-bit resolution and internal reference simplify design, while the parallel interface allows direct connection to microcontrollers. The device's military-grade temperature range ensures stable operation in factory environments with extreme temperatures. The LCC package is suitable for compact control modules.
Được đề xuất
Medical Instrumentation
The AD574ATE/883B is used in medical instrumentation such as patient monitoring systems and diagnostic equipment. Its high accuracy and reliability are critical for precise measurement of physiological signals. The device's parallel interface facilitates integration with digital signal processors for real-time analysis. The military temperature range ensures performance in various clinical environments, and the hermetic ceramic package provides protection against moisture and contaminants.
Được đề xuất
Scientific Data Acquisition
For scientific research, the AD574ATE/883B offers the precision and stability required for accurate data acquisition. Its 12-bit resolution and internal reference ensure consistent measurements, while the parallel interface allows high-speed data transfer to computers. The device's wide temperature range makes it suitable for field experiments in extreme conditions. The LCC package is ideal for compact data loggers and instrumentation.
Được đề xuất
Aerospace and Defense
The AD574ATE/883B is designed for aerospace and defense applications requiring high reliability and performance. Its MIL-STD-883C Class B processing ensures it meets stringent military standards. The device's 12-bit resolution and parallel interface are suitable for radar, communication, and guidance systems. The ceramic LCC package provides excellent thermal conductivity and mechanical strength, essential for withstanding extreme conditions.
Được đề xuất
Test and Measurement
In test and measurement equipment, the AD574ATE/883B provides accurate analog-to-digital conversion for oscilloscopes, multimeters, and data loggers. Its 12-bit resolution and parallel interface enable fast data acquisition and processing. The device's wide temperature range ensures stable performance in laboratory and field environments. The LCC package is suitable for high-density PCB designs, allowing compact instrument designs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho AD574ATE/883B — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | AD574AUD/883B | AD574ATD/883B | AD574ASE/883B | AD574ASD/883B | AD1674TD/883B | ADS774JU |
|---|---|---|---|---|---|---|---|
| Package | 28-LCC (11.43x11.43) | 28-LCC (11.43x11.43) | 28-CDIP | 28-LCC (11.43x11.43) | 28-CDIP | 28-CDIP | 28-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR | SAR |
| Input Channels | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Data Interface | Parallel | Parallel | Parallel | Parallel | Parallel | Parallel | Parallel |
| 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 | 0°C to +70°C |
| MIL-STD-883C | Class B | Class B | Class B | Class B | Class B | Class B | No |
Bảo phân biệt quan trọng
- Military-grade processing (vsADS774JU)
- Ceramic LCC package (vsAD574ATD/883B)
- Internal reference and clock (vsADS774JU)
Ghi chú thiết kế
The AD574ATE/883B requires multiple supply voltages: +5V for logic, and ±12V or ±15V for the analog section. Ensure that these supplies are well-regulated and decoupled with 0.1uF ceramic capacitors close to the VCC, VEE, and VLOGIC pins. A 10uF tantalum capacitor on each supply is recommended for low-frequency noise filtering.
For optimal performance, use a ground plane and separate analog and digital ground areas, connecting them at a single point near the ADC. Keep analog input traces short and shielded from digital signals to minimize noise coupling. The LCC package has exposed pads; ensure proper soldering to the PCB for mechanical stability and thermal dissipation.
Do not exceed the absolute maximum ratings for supply voltages, as this can damage the device. Ensure that the analog input voltage does not exceed the specified range (0-10V or 0-20V depending on configuration). The internal reference is trimmed at the factory; avoid loading the REF OUT pin with low-impedance circuits, as this can degrade accuracy.
Thông tin tuân thủ
Military-grade component, not RoHS compliant due to hermetic ceramic package.
