Rainbow Electronics DS4026 - Manual (Page 7)

DS4026
10MHz to 51.84MHz TCXO
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DS4026
GNDA
0.1 μF
0.1 μF
0.1 μF
20 Ω
V REF
100 μF ±5%
CERAMIC
V CC
V OSC
GNDOSC
N.C.
N.C.
N.C.
V CCD
FOUT
GNDD
SCL
SDA
GND
N.C.
N.C.
Pin Description
PIN NAME FUNCTION
1 GNDA Ground for DAC
2 V REF Voltage Reference Output. This pin must be decoupled with a 100µF ceramic capacitor to ground.
3 V CC
Power Supply for Digital Control and Temperature Sensor. This pin must be decoupled with a 100nF
capacitor to ground.
4 V 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
2
C interface. This open-drain pin
requires an external pullup resistor.
13 SCL
Serial Clock Input. SCL is the clock input for the I
2
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 20
Ω resistor must be placed in series between the power supply and V
CCD .
Figure 1. Typical Operating Circuit