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Direct Digital Synthesizer

Package Information

CAD Model: View CAD Model
Pkg. Type: LQFP
Pkg. Code: QMB
Lead Count (#): 48
Pkg. Dimensions (mm): 7.01 x 7.01 x 0.00
Pitch (mm): 0.5

Environmental & Export Classifications

Moisture Sensitivity Level (MSL)
Pb (Lead) Free No
ECCN (US)
HTS (US)

Product Attributes

Pkg. Type LQFP
Carrier Type Tray
Filter Subtype DDS
Filtering None
Frequency Resolution 48
Input Data (Bits) 14
Input Rate (MSPS) 125
Lead Count (#) 48
Length (mm) 7
MOQ 250
Modulation Formats QPSK, FSK
Output Analog
Pb (Lead) Free No
Pitch (mm) 0.5
Pkg. Dimensions (mm) 7.0 x 7.0 x 0.00
Qualification Level Standard
Temp. Range (°C) -40 to +85°C
Width (mm) 7

Description

The 14-bit ISL5314 is a complete direct digital synthesizer (DDS) system in a single 48 Ld LQFP package. A 48-bit programmable carrier NCO (numerically controlled oscillator) and a high-speed 14-bit digital-to-analog converter (DAC) are integrated into a stand-alone DDS. The DDS accepts 48-bit center and offset frequency control information via a parallel processor interface. A 40-bit frequency tuning word can also be loaded via an asynchronous serial interface. Modulation control is provided by 3 external pins. The PH0 and PH1 pins select phase offsets of 0°, 90°, 180°, and 270°, while the ENOFR pin enables or zeros the offset frequency word to the phase accumulator. The parallel processor interface has an 8-bit write-only data input C(7:0), a 4-bit address A(3:0) bus, a Write Strobe (WR), and a Write Enable. The processor can update all registers simultaneously by loading a set of master registers, then transfer all master registers to the slave registers by asserting the UPDATE pin.