Cypress CY2048WAF Phase Noise, Temp = 25C, V DD = NOM = 10MHz, X CAP = 7F Hex, Offset DBc/Hz Typ

CY2048WAF

AC Electrical Specifications[1] over the operating range, except as noted
Parameter[1]			Description				Condition	Min.	Typ.	Max.	Unit
FOUT		Output Frequency						0.625	–	48	MHz
DC		Output Duty Cycle				XTAL Buffered or Divided		45	50	55	%
TR		Rise Time				Output Clock Rise Time, Measured from 20% to				2.5	ns
						80% of VDD, COUT = 15 pF.
TF		Fall Time				Output Clock Fall Time, Measured from 80% to				2.5	ns
						20% of VDD, COUT = 15 pF.
tPJ1		RMS Period Jitter				XIN = 10–48 MHz. Measured at VDD/2		–	4	15	ps
tPJ2[2]		Peak-to-peak Period Jitter				XIN = 10–48 MHz. Measured at VDD/2		–	30	80	ps
DL		Crystal drive level				48-MHz crystal, CL = 7 pF, C0 = 2 pF,			350–400		∝W
						R1 = 10 Ohms, Temp. = 25°C, VDD = 3.6V
–R		Negative Resistance				Measured at 48 MHz, CL = 10 pF, C0 = 5 pF		–	–	–150	Ω
FDRIFT		Output Frequency Drift				3.0V ± 10%, 3.3V ± 10% for Temp. = 25°C		–2	–	2	ppm
Phase Noise, Temp = 25°C, VDD = 3.3V,
FNOM = 10MHz, XCAP = 7F (Hex)
Offset				dBc/Hz (Typ)
10 Hz					–90
100 Hz					–115
1 kHz					–130
10 kHz					–140
100 kHz					–140
1 MHz					–140
Crystal Oscillator Tuning Capacitor Values
Capacitor Bit				Capacitance (pF) per Side
	C7				5.000
	C6				2.500
	C5				1.250
	C4				0.625
	C3				0.313
	C2				0.156
	C1				0.078
	C0				0.039

XIN

XOUT

CXIN

CXOUT

C7

C6

C5

C4

C3

C2

C1

C0

C0

C1

C2

C3

C4

C5

C6

C7

Figure 1. Programmable Load Capacitance

Notes:

2. TPJ2 measured using DTS-2075, # of events set to 10, 000.

Document #: 38-07738 Rev. *A Page 4 of 7

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