AD9751ASTZRL - 10-Bit 300 MSPS TxDAC+ DAC | Analog Devices
MPN: AD9751ASTZRL β Active| Qty | Unit Price | Extended |
|---|---|---|
| 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 |
Drop-in alternatives for AD9751ASTZRL β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
AD9751AST
β Drop-Inπ Reference alternative (not in catalog)
AD9751ASTRL
β Drop-Inπ Reference alternative (not in catalog)
AD9746
β Drop-Inπ Reference alternative (not in catalog)
DAC8565
β Drop-Inπ Reference alternative (not in catalog)
LTC1660
β Drop-Inπ Reference alternative (not in catalog)
AD9751ASTZRL Maximum Ratings & Electrical Characteristics
| Resolution | 10 Bit |
| Number of DAC Channels | 1 |
| Settling Time | [DATA_NEEDED: settling time] |
| Output Type | Current |
| Data Interface | Parallel |
| Reference Type | Internal |
| Voltage - Supply, Analog | 3.3V |
| Voltage - Supply, Digital | 3.3V |
| Operating Temperature Range | -40Β°C ~ 85Β°C |
| Package / Case | 48-LQFP (7x7) |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (TR) |
| Output Update Rate | 300 MSPS |
| SFDR to Nyquist @ 25 MHz Output | 64 dB |
| Internal Clock Doubling PLL | Yes |
| Differential Output | Yes |
| RoHS Status | Compliant |
AD9751ASTZRL Pin Configuration
| Pin 1 | CLK β Clock input |
| Pin 2 | GND β Ground |
| Pin 3 | DVDD β Digital supply |
| Pin 4 | D0 β Data bit 0 |
| Pin 5 | D1 β Data bit 1 |
| Pin 6 | D2 β Data bit 2 |
| Pin 7 | D3 β Data bit 3 |
| Pin 8 | D4 β Data bit 4 |
| Pin 9 | D5 β Data bit 5 |
| Pin 10 | D6 β Data bit 6 |
| Pin 11 | D7 β Data bit 7 |
| Pin 12 | D8 β Data bit 8 |
| Pin 13 | D9 β Data bit 9 |
| Pin 14 | DVDD β Digital supply |
| Pin 15 | GND β Ground |
| Pin 16 | MODE β Mode select |
| Pin 17 | SLEEP β Sleep mode control |
| Pin 18 | PLL β PLL enable |
| Pin 19 | AVDD β Analog supply |
| Pin 20 | IOUT β Current output |
| Pin 21 | IOUTB β Complementary current output |
| Pin 22 | GND β Ground |
| Pin 23 | AVDD β Analog supply |
| Pin 24 | COMP β Compensation pin |
| Pin 25 | REFIO β Reference input/output |
| Pin 26 | GND β Ground |
| Pin 27 | AVDD β Analog supply |
| Pin 28 | NC β No connect |
| Pin 29 | NC β No connect |
| Pin 30 | NC β No connect |
| Pin 31 | NC β No connect |
| Pin 32 | NC β No connect |
| Pin 33 | NC β No connect |
| Pin 34 | NC β No connect |
| Pin 35 | NC β No connect |
| Pin 36 | NC β No connect |
| Pin 37 | NC β No connect |
| Pin 38 | NC β No connect |
| Pin 39 | NC β No connect |
| Pin 40 | NC β No connect |
| Pin 41 | NC β No connect |
| Pin 42 | NC β No connect |
| Pin 43 | NC β No connect |
| Pin 44 | NC β No connect |
| Pin 45 | NC β No connect |
| Pin 46 | NC β No connect |
| Pin 47 | NC β No connect |
| Pin 48 | NC β No connect |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
AD9751ASTZRL is suitable for 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 where high-speed, high-resolution DACs are required to generate modulated signals. Its 300 MSPS update rate and 64 dB SFDR ensure excellent signal quality for WCDMA, LTE, and other cellular standards. The dual muxed port allows interleaving of I/Q data, simplifying the digital interface. The internal PLL can double the clock, reducing the required input clock frequency. With a 3.3V supply, it integrates easily into modern base station designs, providing a compact solution for multi-carrier transmission.
Recommended
Direct Digital Synthesis (DDS)
In DDS systems, the AD9751ASTZRL converts digital phase accumulator outputs into analog waveforms. Its high update rate of 300 MSPS enables generation of frequencies up to 150 MHz with good spectral purity. The 10-bit resolution provides adequate amplitude resolution for many communication and test applications. The internal reference simplifies design, and the parallel interface allows direct connection to FPGAs or DSPs. The excellent SFDR performance ensures low spurious levels, critical for frequency hopping and spread spectrum systems.
Recommended
Arbitrary Waveform Generation
The AD9751ASTZRL is well-suited for arbitrary waveform generators (AWGs) that require high-speed, high-resolution signal synthesis. Its 300 MSPS update rate allows generation of complex waveforms with bandwidths up to 150 MHz. The dual muxed port architecture enables interleaving of data from two memory banks, effectively doubling the waveform memory throughput. The internal PLL simplifies clocking, and the differential current outputs can be easily converted to voltage using an external transformer or op-amp. This makes it a flexible choice for test and measurement equipment.
Recommended
Digital Radio Links
In digital radio link transmitters, the AD9751ASTZRL converts baseband digital signals to intermediate frequency (IF) or radio frequency (RF) analog signals. Its high update rate and excellent SFDR ensure minimal spectral regrowth and intermodulation distortion, which are critical for meeting regulatory emission limits. The device's 10-bit resolution provides sufficient dynamic range for QAM and OFDM modulation schemes. The internal PLL allows flexible clocking, and the compact 48-LQFP package is ideal for space-constrained radio modules.
Recommended
Wireless Local Loop
The AD9751ASTZRL is used in wireless local loop (WLL) systems to generate transmit signals for fixed wireless access points. Its 300 MSPS update rate supports wideband CDMA and OFDM signals, while the 10-bit resolution provides adequate signal-to-noise ratio for voice and data services. The dual muxed port simplifies interfacing with baseband processors, and the internal reference reduces external component count. The device's low power consumption and small package make it suitable for customer-premises equipment.
Recommended
Test and Measurement Equipment
In test and measurement equipment such as signal generators and arbitrary waveform generators, the AD9751ASTZRL provides high-speed waveform synthesis with excellent dynamic performance. Its 300 MSPS update rate allows generation of fast-rising edges and wideband signals, while the 10-bit resolution ensures low quantization noise. The internal PLL and reference simplify system design, and the parallel interface is compatible with common FPGA and DSP platforms. The device's industrial temperature range makes it suitable for benchtop and field instruments.
Recommended
Recommended Products Summary
Engineering reference data for AD9751ASTZRL β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD9751AST | AD9751ASTRL | 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 |
| Max Update Rate | 300 MSPS | 300 MSPS | 300 MSPS | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Data Interface | Parallel | Parallel | Parallel | Parallel | Serial | Serial |
| Supply Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 2.7V to 5.5V | 2.7V to 5.5V |
| Internal Reference | Yes | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40Β°C to +85Β°C | -40Β°C to +85Β°C | -40Β°C to +85Β°C | -40Β°C to +85Β°C | -40Β°C to +105Β°C | -40Β°C to +85Β°C |
Key Differentiators
- 300 MSPS update rate (vs DAC8565)
- Dual muxed port architecture (vs LTC1660)
- Internal clock doubling PLL (vs AD9746)
Design Notes
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 AD9751ASTZRL operates from a 3.3V supply. Ensure the supply is clean and well-regulated, with low noise, as supply noise can degrade the DAC's dynamic performance. Use a low-dropout regulator (LDO) with high PSRR to power the analog supply, and consider ferrite beads to isolate digital and analog supplies.
The differential current outputs (IOUT, IOUTB) should be terminated with a transformer or resistor network to convert to a voltage signal. Use a 1:1 balun transformer with a center tap for best high-frequency performance. Keep the output traces short and symmetric to minimize parasitic inductance and capacitance.
Compliance Information
RoHS compliant per DigiKey listing. Other compliance data not specified in provided sources.
