AD9265 - 16-Bit 125 MSPS ADC | Analog Devices | Communications
Référence : AD9265 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $45.32 | $45,32 |
| 10 | $41.87 | $418,70 |
| 100 | $36.54 | $3 654,00 |
| 500 | $32.1 | $16 050,00 |
| 1 000 | $28.75 | $28 750,00 |
AD9265 Présentation
An analog-to-digital converter (ADC) is a critical component in signal processing chains, converting continuous analog signals into discrete digital values for processing by digital systems. The AD9265 belongs to the family of high-speed, high-resolution ADCs, which are essential in applications such as software-defined radios, radar systems, and medical imaging. Its 16-bit resolution and 125 MSPS sampling rate enable precise digitization of wideband signals, balancing speed and accuracy.
Key features of the AD9265 include a 16-bit resolution, sampling rates of 125 MSPS, 105 MSPS, and 80 MSPS variants, and a 1.8 V supply voltage. It offers high SNR and SFDR, making it ideal for demanding communications systems. The device also includes a differential input, a CMOS or LVDS output interface, and a flexible SPI port for configuration. Its low power dissipation and small package footprint enhance system integration.
Technically, the AD9265 employs a pipelined ADC architecture, which allows high-speed conversion while maintaining high resolution. The device integrates a sample-and-hold amplifier, a reference voltage, and digital error correction, ensuring accurate conversion across the full input range. The output data can be formatted in either offset binary or two's complement, providing flexibility for various digital interfaces.
Typical applications include communications receivers, radar systems, medical ultrasound, and test and measurement equipment. In communications, the AD9265's high SNR and SFDR enable reliable demodulation of complex modulated signals. In radar, its high sampling rate captures fast-rising pulses with precision. In medical imaging, the 16-bit resolution ensures fine detail in ultrasound images.
When designing with the AD9265, ensure proper decoupling of the analog and digital supplies, and use a low-jitter clock source to maximize SNR. The differential input should be driven with a balanced source to achieve optimal performance. The SPI port allows adjustment of output format and test modes, which can be used to verify system integrity.
Alternatives de remplacement direct pour AD9265 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
AD9265BCPZ-105
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AD9265BCPZ-125
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AD9265BCPZ-80
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
LTC2208
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
ADS4249
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
AD9265 Valeurs maximales et caractéristiques électriques
| Résolution | 16 bits |
| Fréquence d'échantillonnage | 125 MSPS (also 105 MSPS, 80 MSPS variants) |
| Number of Inputs | 1 |
| Input Type | Differential |
| Data Interface | CMOS or LVDS |
| Architecture | Pipelined |
| Tension d'alimentation | 1.8 V |
| Boîtier | 48-LFCSP-VQ (7x7 mm) |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
| Number of Converters | 1 |
Configuration des broches de AD9265
| Broche 1 | AVDD — Analog supply voltage (1.8 V) |
| Broche 2 | VIN+ — Positive differential analog input |
| Broche 3 | VIN- — Negative differential analog input |
| Broche 4 | AVSS — Analog ground |
| Broche 5 | CLK+ — Positive clock input |
| Broche 6 | CLK- — Negative clock input |
| Broche 7 | DVDD — Digital supply voltage (1.8 V) |
| Broche 8 | DVSS — Digital ground |
| Broche 9 | D0 — Digital output bit 0 (LSB) |
| Broche 10 | D1 — Digital output bit 1 |
| Broche 11 | D2 — Digital output bit 2 |
| Broche 12 | D3 — Digital output bit 3 |
| Broche 13 | D4 — Digital output bit 4 |
| Broche 14 | D5 — Digital output bit 5 |
| Broche 15 | D6 — Digital output bit 6 |
| Broche 16 | D7 — Digital output bit 7 |
| Broche 17 | D8 — Digital output bit 8 |
| Broche 18 | D9 — Digital output bit 9 |
| Broche 19 | D10 — Digital output bit 10 |
| Broche 20 | D11 — Digital output bit 11 |
| Broche 21 | D12 — Digital output bit 12 |
| Broche 22 | D13 — Digital output bit 13 |
| Broche 23 | D14 — Digital output bit 14 |
| Broche 24 | D15 — Digital output bit 15 (MSB) |
| Broche 25 | SCLK — SPI clock input |
| Broche 26 | SDIO — SPI data input/output |
| Broche 27 | CSB — SPI chip select (active low) |
| Broche 28 | PDWN — Power-down control (active high) |
| Broche 29 | SYNC — Synchronization input |
| Broche 30 | OEB — Output enable (active low) |
| Broche 31 | VREF — Voltage reference output |
| Broche 32 | SENSE — Reference mode select |
| Broche 33 | REFB — Reference bottom |
| Broche 34 | REFT — Reference top |
| Broche 35 | CML — Common-mode level output |
| Broche 36 | VCM — Common-mode voltage output |
| Broche 37 | AVDD — Analog supply voltage (1.8 V) |
| Broche 38 | AVSS — Analog ground |
| Broche 39 | AVSS — Analog ground |
| Broche 40 | AVDD — Analog supply voltage (1.8 V) |
| Broche 41 | DVDD — Digital supply voltage (1.8 V) |
| Broche 42 | DVSS — Digital ground |
| Broche 43 | DVSS — Digital ground |
| Broche 44 | DVDD — Digital supply voltage (1.8 V) |
| Broche 45 | NC — No connect |
| Broche 46 | NC — No connect |
| Broche 47 | NC — No connect |
| Broche 48 | NC — No connect |
Applications typiques
AD9265 convient pour 6 applications: Communications Receivers, Radar Systems, Medical Ultrasound, Test and Measurement, Software-Defined Radio, Communications Infrastructure.
Communications Receivers
The AD9265 is ideal for communications receivers due to its high SNR and SFDR, enabling reliable demodulation of complex modulated signals. Its 125 MSPS sampling rate supports wideband signals, and the 16-bit resolution ensures high dynamic range. The device's low power consumption is beneficial for multi-channel systems. In a typical receiver chain, the AD9265 digitizes the IF signal after downconversion, providing a digital output for baseband processing. The differential input and LVDS output interface simplify connection to FPGAs or DSPs. The SPI port allows configuration of output format and test modes, enhancing system flexibility.
Recommandé
Radar Systems
In radar systems, the AD9265's high sampling rate and 16-bit resolution enable precise digitization of radar returns, improving target detection and range resolution. The device's high SFDR minimizes spurious signals that could be mistaken for targets. The 1.8 V supply and low power dissipation are advantageous for phased-array radar modules. The AD9265 can be used in both pulsed and continuous-wave radar architectures. Its pipelined architecture ensures low latency, which is critical for real-time processing. The LVDS output interface provides high-speed data transfer to processing units.
Recommandé
Medical Ultrasound
The AD9265 is well-suited for medical ultrasound systems, where high resolution and low noise are essential for image quality. The 16-bit resolution provides fine amplitude detail, while the 125 MSPS sampling rate captures high-frequency ultrasound echoes. The device's low power consumption is important for portable ultrasound devices. In an ultrasound receiver, the AD9265 digitizes the echo signal after beamforming, enabling digital signal processing for image reconstruction. The differential input reduces common-mode noise, improving signal integrity. The SPI port allows adjustment of output data format to match the processing chain.
Recommandé
Test and Measurement
The AD9265 is used in test and measurement equipment such as oscilloscopes and spectrum analyzers, where high bandwidth and accuracy are required. Its 125 MSPS sampling rate and 16-bit resolution enable precise digitization of signals up to tens of MHz. The device's high SNR ensures accurate measurements of small signals. In a digital oscilloscope, the AD9265 digitizes the input signal after attenuation and amplification, providing a digital representation for display and analysis. The LVDS output interface supports high-speed data transfer to the acquisition system. The SPI port enables configuration of test modes for calibration.
Recommandé
Software-Defined Radio
The AD9265 is a key component in software-defined radios (SDR), where it digitizes wideband RF signals for digital processing. Its high sampling rate and 16-bit resolution enable the capture of multiple channels simultaneously. The device's high SFDR ensures that weak signals are not masked by spurious tones. In an SDR receiver, the AD9265 digitizes the IF signal after downconversion, allowing flexible demodulation in software. The LVDS output interface provides a high-speed digital stream to an FPGA or DSP. The SPI port allows dynamic reconfiguration of the ADC for different operating modes.
Recommandé
Communications Infrastructure
The AD9265 is used in communications infrastructure such as base stations and microwave links, where high performance and reliability are critical. Its 16-bit resolution and 125 MSPS sampling rate support high-capacity data transmission. The device's low power consumption reduces heat dissipation in dense equipment. In a base station receiver, the AD9265 digitizes multiple carriers simultaneously, enabling digital predistortion and interference cancellation. The differential input and LVDS output interface simplify connection to digital processors. The SPI port allows configuration of output data format and test modes for system calibration.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour AD9265 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | AD9265BCPZ-105 | AD9265BCPZ-125 | AD9265BCPZ-80 | LTC2208 | ADS4249 |
|---|---|---|---|---|---|---|
| Package | 48-LFCSP-VQ (7x7) | 48-LFCSP-VQ (7x7) | 48-LFCSP-VQ (7x7) | 48-LFCSP-VQ (7x7) | 48-LFCSP-VQ (7x7) | 48-LFCSP-VQ (7x7) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Resolution | 16 bits | 16 bits | 16 bits | 16 bits | 16 bits | 16 bits |
| Sampling Rate | 125 MSPS | 105 MSPS | 125 MSPS | 80 MSPS | 130 MSPS | 250 MSPS |
| Supply Voltage | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Input Type | Differential | Differential | Differential | Differential | Differential | Differential |
| Data Interface | CMOS or LVDS | CMOS or LVDS | CMOS or LVDS | CMOS or LVDS | LVDS | LVDS |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
Principaux différenciateurs
- High sampling rate with 16-bit resolution (vs AD9265BCPZ-105)
- Low power consumption (vs LTC2208)
- Flexible output interface (vs ADS4249)
Notes de conception
The AD9265 requires a clean 1.8 V supply for both analog and digital domains. Use separate analog and digital supply pins with proper decoupling. Place 0.1 uF and 10 uF capacitors close to each supply pin to filter high-frequency noise. A ferrite bead can be used to isolate the analog supply from digital switching noise.
For optimal performance, use a solid ground plane and partition the PCB into analog and digital sections. The analog input traces should be kept short and shielded to minimize noise pickup. The clock input should be routed with controlled impedance and kept away from digital outputs to avoid crosstalk.
The differential analog input should be driven with a balanced source to achieve the best SNR and SFDR. Use a transformer or a differential amplifier to convert single-ended signals to differential. Ensure the common-mode voltage is set to the specified VCM level. The clock source must have low jitter to avoid degrading the SNR.
Informations de conformité
RoHS compliant per Analog Devices product page. No AEC-Q100 qualification for this ADC.
