AD9002BJ - 8-Bit 150 MSPS ADC | Analog Devices
MPN: AD9002BJ ✗ Cuối đờiAD9002BJ Tóm tắt
A flash ADC is a parallel-input, parallel-output converter architecture that compares an analog input against multiple internal reference levels during each conversion. Unlike a SAR ADC, it does not require a succession of lower-resolution conversions, which makes it suitable for high-frequency waveform capture, radar signal processing, digital oscilloscopes, automatic test equipment, and digital radio receivers. The AD9002 occupies the high-speed ADC segment within the broader semiconductor and data-converter hierarchy.
The AD9002's key characteristics are its 8-bit resolution, encode rate of 150 MSPS, 17 pF input capacitance, and -5.2 V single-supply operation. Its 256 parallel comparator stages support rapid sampling, while the decoded ECL-compatible outputs provide a high-speed logic interface. The 8-bit resolution offers 256 digital codes, making the converter appropriate for applications where wide bandwidth and rapid acquisition are more important than fine amplitude resolution.
The advanced bipolar process is central to the converter's high-speed operation. The internal flash array uses 256 comparator stages, and the decoder converts their simultaneous states into an 8-bit output word. This parallel comparison structure minimizes conversion delay compared with sequential-resolution architectures, although the 8-bit output quantizes the analog input into discrete 256-level steps. ECL-compatible output levels require careful interface and termination design when connecting the converter to downstream digital circuitry.
Typical applications include radar systems, digital oscilloscopes and automatic test equipment, laser and radar warning receivers, and digital radio equipment. In these systems, the AD9002 can capture rapidly changing input signals and provide parallel digital data for real-time processing. Its 17 pF input capacitance also makes source impedance and driver bandwidth important considerations in the analog front end.
When designing a circuit around the AD9002BJ, use the manufacturer's recommended input, reference, decoupling, clocking, and output-routing configurations. Keep high-speed analog traces short, provide a low-impedance return path, and control clock jitter and board-generated noise. Because the output interface is ECL-compatible rather than a conventional low-voltage CMOS interface, verify voltage levels, termination, and receiver compatibility before releasing the PCB layout.
This product record combines the manufacturer's architecture details with practical guidance for package interpretation, high-speed layout, interface selection, and qualified drop-in sourcing. It also distinguishes converter resolution, sampling rate, input capacitance, supply requirements, and environmental limits so engineers can assess fit before beginning a board design.
Bộ thay thế dễ dàng lắp đặt cho AD9002BJ — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Không có bộ thay thế dễ dàng lắp đặt sẵn có cho sản phẩm này.
Yêu cầu các bộ thay thếAD9002BJ Tỷ lệ tối đa & tính chất điện
| Converter Type | Flash analog-to-digital converter |
| Độ phân giải | 8 bit |
| Tỷ lệ lấy mẫu | 150 MSPS |
| Maximum Sampling Rate | In excess of 150 MSPS |
| Cung cấp电容 | 17 pF |
| Điện áp cung cấp | -5.2 V |
| Supply Configuration | Single supply |
| Process Technology | Advanced bipolar process |
| Internal Comparator Stages | 256 parallel comparator stages |
| Output Interface | ECL-compatible output latches |
| Number of Terminals | 28 |
| Package Code | QCCJ |
| Package Shape | Square |
| Terminal Form | J-bend |
| Maximum Operating Temperature | 85 °C |
| Kiểu lắp đặt | Surface mount |
| Military Qualification Availability | MIL-STD-883 compliant versions available |
Hướng dẫn cấu hình chân AD9002BJ square
Cấu hình chân cho AD9002BJ (square gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho AD9002BJ.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
AD9002BJ phù hợp cho 6 Áp dụngs: Radar Signal Acquisition, Digital Oscilloscope Front End, Automatic Test Equipment, Laser and Radar Warning Receivers, Digital Radio Receiver, High-Speed Data Acquisition.
Radar Signal Acquisition
The AD9002BJ fits radar signal-acquisition stages requiring rapid conversion of high-frequency analog waveforms. Its 150 MSPS encode rate and flash architecture with 256 parallel comparator stages allow the converter to sample changing radar returns without the multi-cycle resolution process used by SAR converters. The 8-bit result supplies 256 quantization levels for downstream detection or display processing. The principal design constraint is the 17 pF input capacitance: place the input driver close to the device and verify that the driver can settle within the required sampling interval. Clock jitter and reference accuracy should also be evaluated because both affect the usable dynamic performance of the acquired radar channel.
Digital Oscilloscope Front End
The AD9002BJ can serve as the acquisition converter in a digital oscilloscope or high-speed measurement instrument because it supports a 150 MSPS encode rate with 8-bit resolution. The parallel flash architecture and ECL-compatible output latches suit instrumentation in which acquired samples must be transferred rapidly into memory or processing logic. Its 17 pF input capacitance requires a suitably low-impedance amplifier and short analog routing. Because 8-bit resolution represents the input as 256 discrete codes, the design should use gain carefully to keep the measured signal within the converter's input range while preserving headroom for overshoot and edge behavior.
Automatic Test Equipment
The AD9002BJ is applicable to automatic test equipment that captures repetitive or pulsed analog waveforms and compares them with digital limits. A 150 MSPS conversion capability supports rapid sampling, while the 8-bit output provides enough code density for many production-test measurements. The ECL-compatible output interface can feed a high-speed capture or comparator section, but the system must confirm voltage-level and termination requirements before layout release. The 17 pF input capacitance makes analog-driver settling a central issue; validate the source impedance and amplifier response at the converter input rather than relying only on nominal bandwidth. Decoupling and reference routing should follow the manufacturer's recommended configuration.
Laser and Radar Warning Receivers
The AD9002BJ is explicitly identified for laser and radar warning receiver applications where fast analog sampling can support signal detection. Its operation above 150 MSPS is valuable when the receiver must characterize short-duration or high-frequency events. The advanced bipolar flash array uses 256 parallel comparator stages and produces decoded ECL-compatible outputs for downstream digital handling. Engineering the receiver around the converter requires a low-noise input path, a stable reference, controlled-impedance clock distribution, and careful termination of the output interface. The -5.2 V supply requirement must be integrated with the receiver's existing negative-rail architecture to avoid unnecessary rail conversion.
Digital Radio Receiver
The AD9002BJ supports digital radio receiver designs requiring broad signal bandwidth and rapid analog-to-digital conversion. Its 150 MSPS encode rate permits sampling at the system clock rate, while the parallel 8-bit flash architecture avoids the longer conversion sequence of a SAR implementation. The converter can feed digital detection, demodulation, or filtering stages through its ECL-compatible output latches. Integration should focus on clock quality, input-driver settling around the 17 pF input capacitance, and correct ECL termination. Designers should also assess whether 8-bit quantization is sufficient for the receiver's required signal-to-noise ratio and apply suitable analog gain if more dynamic range is needed.
High-Speed Data Acquisition
The AD9002BJ can form the conversion stage of a high-speed data-acquisition system that must sample repetitive analog waveforms at up to 150 MSPS. The 256-stage parallel comparator array provides the timing needed for high-rate operation, and the decoded output word can be captured by compatible high-speed logic. The principal trade-off is resolution: 8 bits provides only 256 codes, so this approach is most appropriate where acquisition bandwidth, timing, and signal-to-noise performance matter more than fine quantization. The input driver should compensate for the 17 pF converter capacitance, while PCB routing must minimize analog and digital coupling around the clock, reference, and ECL-compatible output paths.
Dữ liệu tham khảo kỹ thuật cho AD9002BJ — 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 |
|---|---|
| Brand | Analog Devices |
| Package | 28-terminal QCCJ ceramic package |
| Resolution | 8 bit |
| Encode Rate | 150 MSPS |
| Input Capacitance | 17 pF |
| Supply Voltage | -5.2 V single supply |
| Output Interface | ECL-compatible output latches |
| Maximum Operating Temperature | 85 °C |
| Process Technology | Advanced bipolar process |
| Internal Architecture | 256 parallel comparator stages |
Bảo phân biệt quan trọng
- High-speed parallel flash conversion (vsGeneric 8-bit SAR ADC)
- ECL-compatible high-speed output interface (vsLow-voltage CMOS ADC)
- Single negative supply implementation (vsDual-supply high-speed ADC)
Ghi chú thiết kế
Treat the 17 pF AD9002BJ input capacitance as part of the complete driver design. Verify that the preceding amplifier can settle to the required accuracy within the sampling interval, use a low-impedance source, and place the driver close to the converter input. Model board capacitance and pad transitions alongside the 17 pF device input rather than relying on simulator values for the component alone.
Use the manufacturer's recommended reference, decoupling, clock, analog-input, and output-routing arrangement. Keep the -5.2 V supply return continuous, place high-frequency decoupling close to the relevant pins, and prevent clock and ECL-compatible output routing from running beside sensitive input traces. The QCCJ package has no matching canonical pin diagram, so confirm every land assignment against the manufacturer package drawing before fabrication.
Do not substitute a generic 8-bit ADC solely because its sample rate is similar. A direct replacement must preserve the 28-terminal footprint, -5.2 V supply arrangement, ECL-compatible output levels, and at least 150 MSPS operation. Confirm startup behavior, clock polarity, output coding, reference requirements, and timing margins; functional equivalence alone does not establish drop-in compatibility.
Thông tin tuân thủ
MIL-STD-883 compliant versions are available according to the AD9002 product information, but no exact AD9002BJ MIL-STD-883 certification statement, RoHS declaration, REACH declaration, lead-free statement, halogen-free statement, or conflict-minerals declaration was established.
