Datasheet Analog Devices AD9837 — 数据表

Low Power, 8.5 mW, 2.3 V to 5.5 V,
Programmable Waveform Generator
AD9837 Data Sheet
FEATURES GENERAL DESCRIPTION Digitally programmable frequency and phase
8.5 mW power consumption at 2.3 V
MCLK speed: 16 MHz (B grade), 5 MHz (A grade)
28-bit resolution: 0.06 Hz at 16 MHz reference clock
Sinusoidal, triangular, and square wave outputs
2.3 V to 5.5 V power supply
3-wire SPI interface
Extended temperature range: −40°C to +125°C
Power-down option
10-lead LFCSP The AD9837 is a low power, programmable waveform generator
capable of producing sine, triangular, and square wave outputs.
Waveform generation is required in various types of sensing,
actuation, and time domain reflectometry (TDR) applications.
The output frequency and phase are software programmable,
allowing easy tuning. The frequency registers are 28 bits wide:
with a 16 MHz clock rate, resolution of 0.06 Hz can be achieved;
with a 5 MHz clock rate, the AD9837 can be tuned to 0.02 Hz
resolution.
The AD9837 is written to via a 3-wire serial interface. This serial
interface operates at clock rates up to 40 MHz and is compatible …