Rainbow-electronics DS4026 Manual de usuario descargar pdf (Pagina 7)

DS4026

10MHz to 51.84MHz TCXO

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DS4026

GNDA

0.1μF

20Ω

REF

100μF ±5%

CERAMIC

OSC

GNDOSC

N.C.

CCD

FOUT

GNDD

SCL

SDA

GND

N.C.

Pin Description

PIN NAME FUNCTION

1 GNDA Ground for DAC

REF

Voltage Reference Output. This pin must be decoupled with a 100µF ceramic capacitor to ground.

Power Supply for Digital Control and Temperature Sensor. This pin must be decoupled with a 100nF

capacitor to ground.

OSC

Power Supply for Oscillator Circuit. This pin must be decoupled with a 0.1µF capacitor to ground.

5 GNDOSC Ground for Oscillator Circuit

6–10 N.C. No Connection. Must be connected to ground.

11 GND Ground for Digital Control, Temperature Sensor, and Controller Substrate

12 SDA

Serial Data Input/Output. SDA is the data input/output for the I

C interface. This open-drain pin

requires an external pullup resistor.

13 SCL

Serial Clock Input. SCL is the clock input for the I

C Interface and is used to synchronize data

movement on the serial interface.

14 GNDD Ground for Oscillator Output Driver

15 FOUT Frequency Output, CMOS Push-Pull

16 V

CCD

Power Supply for Oscillator Output Driver. This pin must be decoupled with a 0.1µF capacitor to

ground. A 20Ω resistor must be placed in series between the power supply and V

CCD

Figure 1. Typical Operating Circuit

1 2 3 4 5 6 7 8 9 10 11 12 13

10MHz to 51.84MHz TCXO 1

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Rainbow-electronics DS4026 Manual de usuario Pagina 7

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