Overview
The AD9125BCPZRL is a dual, 16-bit, high dynamic range TxDAC+ digital-to-analog converter (DAC) produced by Analog Devices Inc. This component offers a sample rate of 1000 MSPS, enabling the generation of multicarrier signals up to the Nyquist frequency. It is optimized for direct conversion transmit applications, including complex digital modulation and gain and offset compensation. The DAC outputs are designed to interface seamlessly with analog quadrature modulators such as the ADL537x F-MOD series. The device features a 4-wire serial port interface for programming and readback of internal parameters and comes in a 72-lead Lead Frame Chip Scale Package (LFCSP).
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Sample Rate | 1000 | MSPS | |||
| Resolution | 16-bit | ||||
| Full-Scale Output Current | 8.7 | 31.7 | mA | ||
| Power Consumption | At 500 MSPS, full operating conditions | 900 | mW | ||
| CMOS Data Input Logic High | IOVDD = 3.3 V | 1.2 | V | ||
| CMOS Data Input Logic Low | IOVDD = 3.3 V | 0.6 | V | ||
| Maximum Bus Speed | 250 | MHz | |||
| Spurious-Free Dynamic Range (SFDR) | fDAC = 100 MSPS, fOUT = 20 MHz | 78 | dBc |
Key Features
- Ultralow noise and intermodulation distortion (IMD) for high-quality synthesis of wideband signals from baseband to high intermediate frequencies.
- A proprietary DAC output switching technique enhances dynamic performance.
- Current outputs are easily configured for various single-ended or differential circuit topologies.
- A flexible CMOS digital interface allows the standard 32-wire bus to be reduced to a 16-wire bus.
- Gain and phase adjustment for sideband suppression.
- High performance, low noise PLL clock multiplier.
- Digital inverse sinc filter.
- 4-wire serial port interface for programming and readback of internal parameters.
Applications
- Wireless infrastructure: W-CDMA, CDMA2000, TD-SCDMA, WiMAX, GSM, LTE.
- Digital high or low IF synthesis.
- Transmit diversity.
- Wideband communications: LMDS/MMDS, point-to-point.
- Cable modem termination systems.
Q & A
- What is the sample rate of the AD9125BCPZRL?
The AD9125BCPZRL has a sample rate of 1000 MSPS.
- What is the resolution of the AD9125BCPZRL?
The resolution is 16-bit.
- What is the range of full-scale output current for the AD9125BCPZRL?
The full-scale output current can be programmed over a range of 8.7 mA to 31.7 mA.
- What type of package does the AD9125BCPZRL come in?
The AD9125BCPZRL comes in a 72-lead Lead Frame Chip Scale Package (LFCSP).
- What are some of the key applications of the AD9125BCPZRL?
Key applications include wireless infrastructure, digital high or low IF synthesis, transmit diversity, wideband communications, and cable modem termination systems.
- How does the AD9125BCPZRL interface with analog quadrature modulators?
The DAC outputs are optimized to interface seamlessly with analog quadrature modulators such as the ADL537x F-MOD series from Analog Devices, Inc.
- What is the power consumption of the AD9125BCPZRL at 500 MSPS?
The power consumption is 900 mW at 500 MSPS under full operating conditions.
- Does the AD9125BCPZRL support multichip synchronization?
Yes, it includes a multichip synchronization interface.
- How can the internal parameters of the AD9125BCPZRL be programmed?
The internal parameters can be programmed via a 4-wire serial port interface.
- What is the maximum bus speed for the CMOS digital interface?
The maximum bus speed is 250 MHz.
