GENERAL DESCRIPTION
The DS4000 digitally controlled temperature-compensated crystal oscillator (DC-TCXO) features a digital temperature sensor, one fixed-frequency temperature compensated square-wave output (F1), one programmable temperature-compensated square wave output (F2), and digital communication for frequency tuning (SDA, SCL).

FEATURES
Aging ≤1.0ppm (First Year)
Frequency Stability ±1.0ppm from -40°C to +85°C
Frequency Versus Supply Stability of ±1.0ppm per Volt
Base Frequency is Digitally Tunable by ±10ppm
One Fixed-Frequency Output and One
(n + 1) or 2(n + 1) Division of the Base
Frequency Output
Temperature Measurements from -40C
to +85
C with 10-Bit/+0.25°C Resolution and ±3°C Accuracy
2-Wire Serial Interface