(China (Mainland))
Product Summary
The AD9857AST is a Quadrature Digital Upconverter. The AD9857AST integrates a high-speed direct-digital synthesizer (DDS), a high-performance, high-speed 14-bit digital-to-analog converter (DAC), clock multiplier circuitry, digital filters, and other DSP functions onto a single chip, to form a complete quadrature digital upconverter device. The AD9857AST is intended to function as a universal I/Q modulator and agile upconverter, single-tone DDS, or interpolating DAC for communications applications, where cost, size, power dissipation, and dynamic performance are critical attributes. The applications of the AD9857AST are HFC Data, Telephony, and Video Modems; Wireless Base Station; Agile, L.O. Frequency Synthesis; Broadband Communications.
Parametrics
AD9857AST maximum junction temperature: (1)150℃; (2)VS: 4 V; (3)Digital Input Voltage: –0.7 V to +VS; (4)Digital Output Current: 5 mA; (5)Storage Temperature: –65℃ to +150℃; (6)Operating Temperature: –40℃ to +85℃; (7)Lead Temperature (Soldering 10 sec): 300℃; (8)θJA: 35℃/W; (9)θJC: 16℃/W.
Features
AD9857AST features: (1)200 MHz Internal Clock Rate; (2)14-Bit Data Path; (3)Excellent Dynamic Performance, 80 dB SFDR @ 65 MHz (±100 kHz) AOUT; (4)4x–20x Programmable Reference Clock Multiplier; (5)Reference Clock Multiplier PLL Lock Detect Indicator; (6)Internal 32-Bit Quadrature DDS; (7)FSK Capability; (8)8-Bit Output Amplitude Control; (9)Single-Pin Power-Down Function; (10)Four Programmable, Pin-Selectable Signal "Profiles"; (11)SIN(x)/x Correction (Inverse SINC Function); (12)Simplified Control Interface, 10 MHz Serial, 2- or 3-Wire SPI-Compatible; (13)3.3 V Single Supply; (14)Single-Ended or Differential Input Reference Clock; (15)80-Lead LQFP Surface-Mount Packaging; (16)Three Modes of Operation.
Diagrams
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 AD9857AST |
Analog Devices Inc |
IC QUADRATURE DGTL UPCONV 80LQFP |
Data Sheet |
Negotiable |
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AD9857ASTZ |
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IC QUADRATURE DGTL UPCONV 80LQFP |
Data Sheet |
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