Overview
The AD9850BRSZ-REEL, produced by Analog Devices Inc., is a highly integrated Direct Digital Synthesizer (DDS) that leverages advanced CMOS technology to provide a comprehensive set of features for generating frequency and phase-agile sine waves. This device is particularly notable for its high-speed performance, low power consumption, and versatile control interface. The AD9850 is designed to operate over an extended industrial temperature range of –40°C to +85°C and is available in a space-saving 28-lead SSOP surface-mount package.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Clock Input Frequency Range (5 V Supply) | 1 | - | 125 | MHz |
| Clock Input Frequency Range (3.3 V Supply) | 1 | - | 110 | MHz |
| Pulse Width High/Low (5 V Supply, 25°C) | 3.2 | - | - | ns |
| Pulse Width High/Low (3.3 V Supply, 25°C) | 4.1 | - | - | ns |
| Full-Scale Output Current (RSET = 3.9 kΩ, 25°C) | - | - | 10.24 | mA |
| Full-Scale Output Current (RSET = 1.95 kΩ, 25°C) | - | - | 20.48 | mA |
| Gain Error (25°C) | -10 | - | 10 | % FS |
| Gain Temperature Coefficient | - | - | 150 | ppm/°C |
| Output Offset (25°C, 5 V Supply) | - | - | 30 | mV |
| Power Dissipation (3.3 V Supply) | - | - | 155 | mW |
Key Features
- 125 MHz clock rate with high-speed DDS technology
- On-chip high-performance 10-bit D/A converter and high-speed comparator
- Simplified control interface with parallel byte or serial loading format
- Phase modulation capability
- Output frequency resolution of 0.0291 Hz with a 125 MHz reference clock
- Phase-continuous output waveform when frequency is changed
- Low power consumption: 155 mW at 3.3 V supply
- Extended industrial temperature range: –40°C to +85°C
- Space-saving 28-lead SSOP surface-mount package
Applications
The AD9850BRSZ-REEL is suitable for a variety of applications, including:
- RF and Microwave systems: Such as beamformers, phase shifters, and vector modulators.
- Communications: Analog front ends, frequency dividers, multipliers, and detectors.
- Phase Locked Loop (PLL) synthesizers and translation loops.
- Quadrature digital up converters (QDUC).
- RF integrated transmitters, receivers, and transceivers.
- Wireless sensor networks.
Q & A
- What is the maximum clock input frequency of the AD9850BRSZ-REEL at 5 V supply?
The maximum clock input frequency at 5 V supply is 125 MHz.
- What is the resolution of the output frequency with a 125 MHz reference clock?
The output frequency resolution is 0.0291 Hz.
- What type of package does the AD9850BRSZ-REEL come in?
The device is available in a 28-lead SSOP surface-mount package.
- What is the operating temperature range of the AD9850BRSZ-REEL?
The device operates over an extended industrial temperature range of –40°C to +85°C.
- How much power does the AD9850BRSZ-REEL consume at 3.3 V supply?
The power consumption is 155 mW at 3.3 V supply.
- What is the function of the on-chip high-speed comparator?
The on-chip high-speed comparator translates the analog sine wave into a low jitter TTL/CMOS compatible output square wave.
- Does the AD9850BRSZ-REEL support phase modulation?
Yes, the device supports phase modulation capability.
- What is the gain error of the AD9850BRSZ-REEL at 25°C?
The gain error is –10% to +10% FS at 25°C.
- What is the typical output offset voltage at 25°C?
The typical output offset voltage is 30 mV at 25°C.
- Can the AD9850BRSZ-REEL be controlled via both parallel and serial interfaces?
Yes, the device supports both parallel byte and serial loading formats for control.
