DS1090 Datasheet, PDF (6/8 Pages) Maxim Integrated Products – Low-Frequency, Spread-Spectrum EconOscillator

Low-Frequency, Spread-Spectrum
EconOscillator
Pin Description
PIN NAME
FUNCTION
1
OUT Oscillator Output
2
R_SET Frequency Control Resistor Input
3
V_CC Positive-Supply Terminal
4
GND Ground
5
J0 _{Dither Amplitude (Percentage) Inputs}
6
J1 ^{(see Table 2)}
7
JC0
Dither Rate Divisor Inputs (see Table 1)
8
JC1
Block Diagram
R_SET
VOLTAGE-
BIAS CIRCUIT
DS1090
+
∑
MASTER
OSCILLATOR
(VCO)
f_MOSC
FACTORY
PROGRAMMED
PRESCALER
f_OSC
f_OUT
BUFFER
OUT
+
(÷ 1, 2, 4, 8, 16, OR 32)
4MHz–8MHz
V_CC
V_CC
GND
+
DITHER
-
AMPLITUDE
(0, 2, 4, OR 8%)
DITHER GENERATOR
fMOD
TRIANGLE
GENERATOR
(÷ 128)
DITHER RATE
(÷ 4, 8, 16, OR 32)
J0
J1
JC0
JC1
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