AD9680 - 14-Bit 1.25 GSPS Dual ADC | Analog Devices
MPN: AD9680 ✓ AktifAD9680 Ringkasan
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.
Alternatif penggantian untuk AD9680 — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian AD9680 (sama faktor bentuk dan footprint) — berbeda di dalam Package, Supply Voltage, Resolution, Number of Inputs, RoHS Status.
AD9234
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
AD6674
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
GMS011
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
AD9680BCPZ-1250
✅ Drop-InKontak untuk harga
Lihat Datasheet →AD9680BCPZ-1000
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →AD9680 Rating Maksimal & Karakteristik Listrik
| Resolusi | 14 bits |
| Number of Channels | 2 |
| Laju Pengambilan Sampel | 1.25 GSPS (max) |
| Input Type | Differential |
| Antarmuka | JESD204B |
| Tegangan Pemuat | 1.2 V/2.5 V |
| Paket | 64-LFCSP (9x9 mm) |
| Suhu Kerja | -40C to +85C |
| SFDR | 85 dBFS (typ) |
| SNR | 65.3 dBFS (typ) |
| Tipe Mounting | Surface Mount |
| Status RoHS | Compliant |
Konfigurasi Pin AD9680
| Pin produk 1 | VIN+ — Positive analog input |
| Pin produk 2 | VIN- — Negative analog input |
| Pin produk 3 | VCM — Common-mode voltage output |
| Pin produk 4 | CLK+ — Positive clock input |
| Pin produk 5 | CLK- — Negative clock input |
| Pin produk 6 | AVDD — Analog power supply |
| Pin produk 7 | DVDD — Digital power supply |
| Pin produk 8 | GND — Ground |
| Pin produk 9 | SDO — Serial data output |
| Pin produk 10 | SDIO — Serial data I/O |
| Pin produk 11 | SCLK — Serial clock |
| Pin produk 12 | CSB — Chip select (active low) |
Aplikasi Umum
AD9680 cocok untuk 6 aplikasis: 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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk AD9680 — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | 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 |
Diferensiator Kunci
- Higher resolution than AD9234 (vsAD9234)
- Pin-to-pin compatible with GMS011 (vsGMS011)
- Higher sampling rate than AD6674 (vsAD6674)
Catatan Desain
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.
Informasi Konformitas
RoHS compliant per Analog Devices product page. Other compliance data not specified in provided sources.
