Product Summary
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.
Parametrics
AD9857AST absolute maximum ratings: (1)Maximum Junction Temperature: 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–20xProgrammable 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, Quadrature Modulator Mode, Single-Tone Mode, Interpolating DAC Mode.
Diagrams
Image | Part No | Mfg | Description | Pricing (USD) |
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AD9857AST |
Analog Devices Inc |
IC QUADRATURE DGTL UPCONV 80LQFP |
Data Sheet |
Negotiable |
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AD9857ASTZ |
IC QUADRATURE DGTL UPCONV 80LQFP |
Data Sheet |
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