Overview
The AD9773BSVZ, produced by Analog Devices Inc., is a 12-bit, high-performance, programmable 2×/4×/8× interpolating dual TxDAC+ (Digital-to-Analog Converter) component. It is part of the AD977x family, known for its pin compatibility and advanced features. This DAC is designed for high-speed applications, offering a maximum input data rate of 160 MSPS and a maximum DAC update rate of 400 MSPS with 8× interpolation. The AD9773 features a serial port interface (SPI) for high-level programmability, enabling various system-level configurations and enhancements.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12-bit | |
| Input Data Rate | 160 MSPS | |
| DAC Update Rate (with 8× interpolation) | 400 MSPS | |
| Interpolation Rates | 2×, 4×, 8× | |
| Digital Modulation | fS/2, fS/4, fS/8 | |
| Output Current Range | 2 mA to 20 mA | |
| Supply Voltage | 3.1 V to 3.5 V | |
| Power Consumption | 1.2 W | |
| Package Type | 80-Lead TQFP (12mm x 12mm) | |
| Process Technology | 0.35 micron CMOS |
Key Features
- Selectable 2×/4×/8× interpolation filters to simplify reconstruction filter requirements and enhance pass-band noise/distortion performance.
- Programmable channel gain and offset control for calibration of LO feedthrough and side-band suppression errors.
- Digital quadrature modulation with image rejection at fS/2, fS/4, or fS/8.
- Direct IF mode for frequency translation of baseband signals.
- Flexible clock input with single-ended or differential input, CMOS, or 1 V p-p LO sine wave input capability.
- User-selectable twos complement or straight binary data coding.
- Dual-port or single-port interleaved input data interface.
- Internal PLL clock multiplier and selectable internal clock divider.
- On-chip 1.2 V reference voltage.
- Low power operation with several sleep functions to reduce power during idle periods.
Applications
- Communications systems: 3G, multicarrier GSM, TDMA, CDMA, and broadband wireless.
- Analog quadrature modulation architecture for high modulation accuracy (e.g., 64 QAM).
- Point-to-point microwave radios.
- Instrumentation and Automated Test Equipment (ATE).
- High-performance systems employing high-order QAM modulation schemes.
Q & A
- What is the resolution of the AD9773BSVZ?
The AD9773BSVZ has a 12-bit resolution.
- What are the selectable interpolation rates for the AD9773BSVZ?
The AD9773BSVZ offers selectable 2×, 4×, and 8× interpolation rates.
- What is the maximum input data rate of the AD9773BSVZ?
The maximum input data rate is 160 MSPS.
- What are the digital modulation capabilities of the AD9773BSVZ?
The AD9773BSVZ supports fS/2, fS/4, and fS/8 digital quadrature modulation with image rejection.
- What is the output current range of the AD9773BSVZ?
The output current range is programmable from 2 mA to 20 mA.
- What is the supply voltage range for the AD9773BSVZ?
The supply voltage range is 3.1 V to 3.5 V.
- What is the typical power consumption of the AD9773BSVZ?
The typical power consumption is 1.2 W.
- What package type is the AD9773BSVZ available in?
The AD9773BSVZ is available in an 80-Lead TQFP (12mm x 12mm) package.
- What are some of the key applications for the AD9773BSVZ?
Key applications include communications systems, analog quadrature modulation, point-to-point microwave radios, and instrumentation/ATE.
- Does the AD9773BSVZ support flexible clock input options?
Yes, it supports single-ended or differential input, CMOS, or 1 V p-p LO sine wave input capability.
