AD9851BRSZ
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Analog Devices Inc. AD9851BRSZ

Manufacturer No:
AD9851BRSZ
Manufacturer:
Analog Devices Inc.
Package:
Tube
Description:
IC DDS 180MHZ 10BIT 28SSOP
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The AD9851BRSZ, produced by Analog Devices Inc., is a highly integrated CMOS 180 MHz Direct Digital Synthesizer (DDS) and Digital-to-Analog Converter (DAC) synthesizer. This device leverages advanced DDS technology, combined with an internal high-speed, high-performance DAC and a comparator, to form a digitally programmable frequency synthesizer and clock generator. It generates a stable frequency and phase-programmable digitized analog output sine wave, which can be used directly or converted internally to a square wave for agile-clock generator applications.

Key Specifications

Parameter Min Typ Max Unit
Frequency Range (6× REFCLK Multiplier Disabled) 100 MHz (2.7 V Supply) - 180 MHz (5.0 V Supply) MHz
Frequency Range (6× REFCLK Multiplier Enabled) 16.66 MHz (2.7 V Supply) - 30 MHz (5.0 V Supply) MHz
Duty Cycle 45% 60% - %
Input Resistance - - 1 MΩ Ω
Power Dissipation - - 555 mW (5 V Supply, 180 MHz clock) mW
Operating Temperature Range -40°C - +85°C °C
Package Type - - 28-lead SSOP -

Key Features

  • Advanced DDS technology with a 32-bit frequency tuning word, providing an output tuning resolution of approximately 0.04 Hz with a 180 MHz system clock.
  • Internal high-speed, high-performance DAC and comparator for generating stable frequency and phase-programmable digitized analog output sine waves.
  • 6× REFCLK Multiplier circuit that eliminates the need for a high-speed reference oscillator, with minimal impact on SFDR and phase noise characteristics.
  • Five bits of programmable phase modulation resolution, enabling phase shifting of the output in increments of 11.25°.
  • Asynchronous loading of frequency tuning, control, and phase modulation words via parallel or serial loading formats.
  • Low jitter output pulse generation using the internal high-speed comparator.
  • Operation over an extended industrial temperature range of –40°C to +85°C at >3.0 V supply voltage.

Applications

  • Agile-clock generator applications, where the sine wave output can be converted internally to a square wave.
  • Frequency synthesis in various communication systems, including RF and microwave applications.
  • Phase modulation and phase shifting in signal processing and transmission systems.
  • Test and measurement equipment requiring precise frequency generation.
  • Wireless communication systems, including transmitters and receivers.

Q & A

  1. What is the AD9851BRSZ?

    The AD9851BRSZ is a CMOS 180 MHz Direct Digital Synthesizer (DDS) and Digital-to-Analog Converter (DAC) synthesizer produced by Analog Devices Inc..

  2. What is the frequency tuning resolution of the AD9851BRSZ?

    The AD9851BRSZ has a frequency tuning resolution of approximately 0.04 Hz with a 180 MHz system clock.

  3. What is the purpose of the 6× REFCLK Multiplier in the AD9851BRSZ?

    The 6× REFCLK Multiplier eliminates the need for a high-speed reference oscillator and has minimal impact on SFDR and phase noise characteristics.

  4. How does the AD9851BRSZ support phase modulation?

    The AD9851BRSZ provides five bits of programmable phase modulation resolution, enabling phase shifting of the output in increments of 11.25°.

  5. What are the loading formats for the frequency tuning and control words?

    The frequency tuning, control, and phase modulation words can be loaded asynchronously via parallel or serial loading formats.

  6. What is the power dissipation of the AD9851BRSZ at maximum clock rate?

    The AD9851BRSZ has a power dissipation of 555 mW at the maximum clock rate of 180 MHz with a 5 V supply.

  7. What is the operating temperature range of the AD9851BRSZ?

    The AD9851BRSZ operates over an extended industrial temperature range of –40°C to +85°C at >3.0 V supply voltage.

  8. In what package type is the AD9851BRSZ available?

    The AD9851BRSZ is available in a 28-lead SSOP surface-mount package.

  9. What are some common applications of the AD9851BRSZ?

    The AD9851BRSZ is used in agile-clock generator applications, frequency synthesis in communication systems, phase modulation, test and measurement equipment, and wireless communication systems.

  10. How does the AD9851BRSZ generate low jitter output pulses?

    The AD9851BRSZ generates low jitter output pulses using its internal high-speed comparator, which can be configured to accept the externally filtered output of the DAC.

Product Attributes

Resolution (Bits):10 b
Master fclk:180 MHz
Tuning Word Width (Bits):32 b
Voltage - Supply:2.7V ~ 5.25V
Operating Temperature:-40°C ~ 85°C
Mounting Type:Surface Mount
Package / Case:28-SSOP (0.209", 5.30mm Width)
Supplier Device Package:28-SSOP
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Similar Products

Part Number AD9851BRSZ AD9850BRSZ AD9851BRS
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Product Status Active Active Active
Resolution (Bits) 10 b 10 b 10 b
Master fclk 180 MHz 125 MHz 180 MHz
Tuning Word Width (Bits) 32 b 32 b 32 b
Voltage - Supply 2.7V ~ 5.25V 3.3V, 5V 2.7V ~ 5.25V
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C
Mounting Type Surface Mount Surface Mount Surface Mount
Package / Case 28-SSOP (0.209", 5.30mm Width) 28-SSOP (0.209", 5.30mm Width) 28-SSOP (0.209", 5.30mm Width)
Supplier Device Package 28-SSOP 28-SSOP 28-SSOP

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