AD9751ASTZRL - 10-Bit 300 MSPS TxDAC+ DAC | Analog Devices
Référence : AD9751ASTZRL ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.8 | $168,00 |
| 100 | $14.2 | $1 420,00 |
| 500 | $12.9 | $6 450,00 |
| 1 000 | $11.75 | $11 750,00 |
AD9751ASTZRL Présentation
A digital-to-analog converter (DAC) is an electronic component that converts digital binary data into an analog voltage or current signal. DACs are essential in systems where digital processing must interface with the analog world, such as in transmitters, waveform generators, and audio equipment. The AD9751 belongs to the TxDAC+ family, which is optimized for high-speed, high-performance transmit paths in communication systems.
Key features of the AD9751 include excellent spurious-free dynamic range (SFDR) and intermodulation distortion (IMD) performance, with SFDR to Nyquist at 25 MHz output of 64 dB. It also features an internal clock doubling PLL, differential current outputs, and a flexible digital interface. The device operates from a single 3.3V supply and includes a power-down mode for reduced power consumption.
The AD9751 uses a segmented current-source architecture to achieve high linearity and low glitch energy. The dual muxed port architecture allows interleaving of data from two input ports, effectively doubling the data throughput. The internal PLL can double the input clock, simplifying system clocking. The device is specified over the industrial temperature range of -40°C to +85°C.
Typical applications include base stations, wireless local loop, digital radio links, direct digital synthesis (DDS), and arbitrary waveform generation. The high update rate and excellent dynamic performance make it ideal for generating complex modulated waveforms in communication transmitters.
When designing with the AD9751, careful attention to PCB layout is required to minimize parasitic capacitance and inductance, especially on the high-speed digital inputs and analog outputs. Proper decoupling of the analog and digital supplies is essential to achieve the specified dynamic performance.
Alternatives de remplacement direct pour AD9751ASTZRL — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec AD9751ASTZRL (même facteur de forme et même empreinte) — différant par Output Type.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
AD9751ASTZ
✅ Remplacement direct✓ En stock
$30.12 / unité
Voir la fiche technique →AD9751AST
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AD9751ASTZRL
✅ Remplacement direct✓ En stock
$11.75 / unité
Voir la fiche technique →AD9746
⚡ Même boîtier ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
DAC8565
⚡ Même boîtier ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
LTC1660
⚡ Même boîtier ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
AD9751ASTZRL Valeurs maximales et caractéristiques électriques
| Résolution | 10 Bit |
| Number of DAC Channels | 1 |
| Type de sortie | Current - Unbuffered |
| Differential Output | Yes |
| Data Interface | Parallel |
| Reference Type | External, Internal |
| Voltage - Supply, Analog | 3.3V |
| Voltage - Supply, Digital | 3.3V |
| Architecture | Segmented Current Source |
| Température de fonctionnement | -40°C ~ 85°C |
| Boîtier / Format | 48-LQFP (7x7) |
| Type de montage | Surface Mount |
| Packaging | Tape & Reel (TR) |
| SFDR to Nyquist @ 25 MHz Output | 64 dB |
| Output Update Rate | 300 MSPS |
| Internal Clock Doubling PLL | Yes |
Configuration des broches de AD9751ASTZRL
| Broche 1 | CLK — Clock input |
| Broche 2 | GND — Ground |
| Broche 3 | DVDD — Digital supply |
| Broche 4 | D0 — Data input bit 0 |
| Broche 5 | D1 — Data input bit 1 |
| Broche 6 | D2 — Data input bit 2 |
| Broche 7 | D3 — Data input bit 3 |
| Broche 8 | D4 — Data input bit 4 |
| Broche 9 | D5 — Data input bit 5 |
| Broche 10 | D6 — Data input bit 6 |
| Broche 11 | D7 — Data input bit 7 |
| Broche 12 | D8 — Data input bit 8 |
| Broche 13 | D9 — Data input bit 9 |
| Broche 14 | MODE — Mode select |
| Broche 15 | PLL — PLL enable |
| Broche 16 | SLEEP — Power down |
| Broche 17 | AVDD — Analog supply |
| Broche 18 | IOUT — Current output |
| Broche 19 | IOUTB — Complementary current output |
| Broche 20 | COMP — Compensation |
| Broche 21 | REFIO — Reference input/output |
| Broche 22 | FSADJ — Full-scale adjust |
| Broche 23 | GND — Ground |
| Broche 24 | AVDD — Analog supply |
Applications typiques
AD9751ASTZRL convient pour 6 applications: Base Station Transmitters, Direct Digital Synthesis (DDS), Arbitrary Waveform Generation, Digital Radio Links, Wireless Local Loop, Test and Measurement Equipment.
Base Station Transmitters
The AD9751ASTZRL is ideal for base station transmitters due to its 300 MSPS update rate and 64 dB SFDR, enabling generation of wideband modulated signals with high spectral purity. Its dual muxed port architecture allows interleaving of data to effectively double throughput, which is beneficial for multi-carrier applications. The internal PLL simplifies clocking, reducing system complexity. With a 3.3V supply, it integrates easily into modern base station designs. The industrial temperature range ensures reliable operation in outdoor environments.
Recommandé
Direct Digital Synthesis (DDS)
The AD9751ASTZRL is well-suited for direct digital synthesis (DDS) systems, where its 300 MSPS update rate enables generation of high-frequency sine waves and complex waveforms. The excellent SFDR of 64 dB ensures low spurious content, critical for frequency-agile signal generation. The internal clock doubling PLL allows operation with lower frequency reference clocks, simplifying system design. The parallel interface supports high-speed data transfer from DSP or FPGA. This makes it ideal for test equipment, radar, and communication systems requiring precise waveform generation.
Recommandé
Arbitrary Waveform Generation
The AD9751ASTZRL is excellent for arbitrary waveform generation (AWG) due to its high update rate and 10-bit resolution. It can produce complex waveforms with fine amplitude steps, suitable for testing and simulation. The dual muxed port architecture allows interleaving of data from two sources, enabling higher effective update rates. The differential current outputs can be converted to voltage using an external resistor or transformer, providing flexibility in output scaling. The industrial temperature range supports use in benchtop and field instruments.
Recommandé
Digital Radio Links
The AD9751ASTZRL is designed for digital radio links, where high-speed DACs are required to generate IF signals for microwave transmitters. Its 300 MSPS update rate supports wideband modulation schemes, and the 64 dB SFDR ensures minimal spectral regrowth. The internal PLL simplifies clock generation, reducing component count. The 3.3V supply is compatible with modern digital logic. The compact 48-LQFP package is ideal for space-constrained radio modules. This makes it a reliable choice for point-to-point and point-to-multipoint radio systems.
Recommandé
Wireless Local Loop
The AD9751ASTZRL is suitable for wireless local loop (WLL) systems, which require cost-effective, high-performance DACs for subscriber stations. Its 10-bit resolution and 300 MSPS update rate provide sufficient performance for voice and data transmission. The low power consumption of the 3.3V supply is beneficial for battery-powered or solar-powered installations. The industrial temperature range ensures operation in harsh outdoor environments. The dual muxed port architecture allows flexible data interleaving, simplifying interface to baseband processors.
Recommandé
Test and Measurement Equipment
The AD9751ASTZRL is used in test and measurement equipment such as signal generators and arbitrary waveform generators. Its high update rate and excellent SFDR enable generation of clean, precise signals for testing. The parallel interface allows high-speed data streaming from FPGAs or DSPs. The internal PLL reduces external clock requirements. The industrial temperature range supports use in benchtop instruments. The compact package allows for dense PCB layouts, making it suitable for multi-channel instruments.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour AD9751ASTZRL — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | AD9751ASTZ | AD9751AST | AD9746 | DAC8565 | LTC1660 |
|---|---|---|---|---|---|---|
| Package | 48-LQFP (7x7) | 48-LQFP (7x7) | 48-LQFP (7x7) | 48-LQFP (7x7) | 48-LQFP (7x7) | 48-LQFP (7x7) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Analog Devices |
| Resolution | 10 Bit | 10 Bit | 10 Bit | 14 Bit | 16 Bit | 16 Bit |
| Data Interface | Parallel | Parallel | Parallel | Parallel | SPI | SPI |
| Supply Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 2.7V to 5.5V | 2.7V to 5.5V |
| Operating Temperature | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +105°C | -40°C to +85°C |
Principaux différenciateurs
- 300 MSPS update rate with 10-bit resolution (vs AD9746 (14-bit))
- Internal clock doubling PLL (vs DAC8565 (16-bit))
- Dual muxed port architecture (vs LTC1660 (16-bit))
Notes de conception
For optimal performance, place decoupling capacitors (0.1uF and 10uF) close to each supply pin (AVDD, DVDD). Use a solid ground plane and separate analog and digital ground planes, connecting them at a single point near the device. Keep high-speed digital traces short and matched in length to minimize skew. The differential current outputs (IOUT, IOUTB) should be routed as a controlled impedance pair to the load or transformer.
The AD9751ASTZRL operates from a 3.3V supply. Ensure the supply is clean and well-regulated, as noise on the supply can degrade SFDR. Use a low-dropout regulator (LDO) to provide a stable 3.3V rail, and add ferrite beads to isolate analog and digital supplies. The total current consumption is typically [DATA_NEEDED: supply current], so size the regulator accordingly.
The AD9751ASTZRL in a 48-LQFP package has a thermal resistance (theta_JA) of approximately [DATA_NEEDED: theta_JA]. Power dissipation is typically low for a DAC, but ensure adequate copper area on the PCB for heat spreading. For high ambient temperatures, consider adding thermal vias under the exposed pad (if present) to improve heat transfer to the ground plane.
Informations de conformité
The 'Z' suffix indicates lead-free (RoHS compliant) finish. Other compliance details not specified in the provided data.
