AD9680 - 14-Bit 1.25 GSPS Dual ADC | Analog Devices
MPN: AD9680 ✓ Hoạt độngAD9680 Tóm tắt
An analog-to-digital converter (ADC) is a device that converts continuous analog signals into discrete digital numbers. The AD9680 is a high-speed, dual-channel ADC that samples at rates up to 1.25 GSPS, making it suitable for wideband signals. It uses a pipelined architecture to achieve high throughput with low latency. The device includes a JESD204B serial interface for high-speed data transfer to FPGAs or ASICs, reducing the number of I/O pins required.
Key features include 14-bit resolution, dual-channel operation, and sample rates up to 1.25 GSPS. The device offers excellent dynamic performance with high SFDR and SNR, making it suitable for demanding applications. It also includes a programmable gain amplifier (PGA) and digital down-conversion (DDC) options for flexible signal processing. The JESD204B interface supports lane rates up to 15 Gbps, enabling high-speed data transfer.
The AD9680 uses a pipelined ADC architecture with digital error correction, achieving high linearity and low noise. The on-chip buffer eliminates the need for external drivers, simplifying the front-end design. The device also includes a sample-and-hold circuit that ensures accurate sampling of high-frequency signals. The LFCSP package provides excellent thermal performance and is suitable for space-constrained designs.
Typical applications include radar systems, software-defined radio, test and measurement equipment, and communications infrastructure. The AD9680's high sample rate and resolution make it ideal for capturing wideband signals with high fidelity. Its dual-channel configuration enables I/Q demodulation in quadrature receivers, reducing system complexity.
When designing with the AD9680, ensure proper power supply decoupling and a clean clock source to achieve optimal performance. The JESD204B interface requires careful PCB layout to maintain signal integrity at high lane rates. Refer to the datasheet for recommended layout guidelines and configuration register settings.
Bộ thay thế dễ dàng lắp đặt cho AD9680 — 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 AD9680 (cùng hình factor và footprint) — khác nhau ở Package, Supply Voltage, Resolution, Number of Inputs, RoHS Status.
AD9234
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD6674
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
GMS011
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD9680BCPZ-1250
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →AD9680BCPZ-1000
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →AD9680 Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 14 bits |
| Number of Channels | 2 |
| Tỷ lệ lấy mẫu | 1.25 GSPS (max) |
| Input Type | Differential |
| Giao diện | JESD204B |
| Điện áp cung cấp | 1.2 V/2.5 V |
| Hộp | 64-LFCSP (9x9 mm) |
| Nhiệt độ hoạt động | -40C to +85C |
| SFDR | 85 dBFS (typ) |
| SNR | 65.3 dBFS (typ) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân AD9680
| Chân 1 | VIN+ — Positive analog input |
| Chân 2 | VIN- — Negative analog input |
| Chân 3 | VCM — Common-mode voltage output |
| Chân 4 | CLK+ — Positive clock input |
| Chân 5 | CLK- — Negative clock input |
| Chân 6 | AVDD — Analog power supply |
| Chân 7 | DVDD — Digital power supply |
| Chân 8 | GND — Ground |
| Chân 9 | SDO — Serial data output |
| Chân 10 | SDIO — Serial data I/O |
| Chân 11 | SCLK — Serial clock |
| Chân 12 | CSB — Chip select (active low) |
Ứng dụng tiêu biểu
AD9680 phù hợp cho 6 Áp dụngs: Radar Systems, Software-Defined Radio, Test and Measurement, Communications Infrastructure, Medical Imaging, Electronic Warfare.
Radar Systems
The AD9680's 14-bit resolution and 1.25 GSPS sampling rate enable high-fidelity capture of wideband radar returns. Its dual-channel architecture supports I/Q demodulation, and the JESD204B interface simplifies data transfer to FPGAs for real-time processing. The high SFDR of 85 dBFS ensures weak target detection in cluttered environments.
Được đề xuất
Software-Defined Radio
In SDR applications, the AD9680 digitizes wideband RF signals directly, eliminating multiple downconversion stages. Its high sample rate and 14-bit resolution provide excellent dynamic range for detecting weak signals alongside strong interferers. The JESD204B interface reduces pin count and simplifies FPGA integration, making it ideal for multi-channel SDR platforms.
Được đề xuất
Test and Measurement
The AD9680 is well-suited for oscilloscopes and spectrum analyzers requiring high-speed, high-resolution digitization. Its dual channels enable simultaneous acquisition of I/Q signals, and the on-chip buffer simplifies front-end design. The device's low power consumption and small LFCSP package make it ideal for portable test equipment.
Được đề xuất
Communications Infrastructure
For 5G and other communications systems, the AD9680 provides high linearity and wide bandwidth for digitizing multiple carriers. Its 14-bit resolution ensures low error vector magnitude (EVM) in QAM modulation schemes. The JESD204B interface supports high lane rates, enabling efficient data transfer to baseband processors.
Được đề xuất
Medical Imaging
In ultrasound and MRI systems, the AD9680's high sample rate and resolution enable precise digitization of analog signals. Its low noise performance (SNR 65.3 dBFS) is critical for image quality. The dual-channel configuration supports phased-array transducers, and the small package allows for compact probe designs.
Được đề xuất
Electronic Warfare
The AD9680 is used in electronic warfare systems for wideband signal interception and analysis. Its high instantaneous bandwidth and 14-bit resolution allow detection of low-probability-of-intercept signals. The dual-channel architecture supports direction-finding applications, and the JESD204B interface enables rapid data transfer to processing units.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho AD9680 — 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 | AD9234 | AD6674 | GMS011 |
|---|---|---|---|---|
| Package | 64-LFCSP (9x9 mm) | 64-LFCSP (9x9 mm) | 64-LFCSP (9x9 mm) | 64-LFCSP (9x9 mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Superb Automation |
| Resolution | 14 bits | 12 bits | 14 bits | 14 bits |
| Max Sampling Rate | 1.25 GSPS | 1 GSPS | 1 GSPS | 1 GSPS |
| Interface | JESD204B | JESD204B | JESD204B | JESD204B |
| Supply Voltage | 1.2 V/2.5 V | 1.2 V/2.5 V | 1.2 V/2.5 V | 1.2 V/2.5 V |
Bảo phân biệt quan trọng
- Higher resolution than AD9234 (vsAD9234)
- Pin-to-pin compatible with GMS011 (vsGMS011)
- Higher sampling rate than AD6674 (vsAD6674)
Ghi chú thiết kế
The AD9680 requires clean power supplies for optimal performance. Use low-dropout regulators (LDOs) for AVDD and DVDD, and place decoupling capacitors (0.1 uF and 10 uF) close to each power pin. A ferrite bead can be used to isolate analog and digital supplies. Refer to the datasheet for recommended power supply sequencing.
For the JESD204B interface, maintain controlled impedance (100 ohm differential) for the high-speed lanes. Keep trace lengths matched and minimize vias. Use ground planes under the ADC and avoid routing digital signals near analog inputs. Follow the layout guidelines in the datasheet to achieve specified SFDR and SNR.
The AD9680's power dissipation is [DATA_NEEDED], but the 64-LFCSP package has an exposed pad for thermal relief. Solder the pad to a large copper area on the PCB to improve heat dissipation. For high ambient temperatures, consider adding thermal vias. Ensure the junction temperature stays within the operating range.
Thông tin tuân thủ
RoHS compliant per Analog Devices product page. Other compliance data not specified in provided sources.
