CGS701AV datasheet(5/10 Pages) NSC

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CGS701A

AC Electrical Characteristics

Over recommended operating free air temperature range All typical values are measured at VCC e 5V TA e 25 C

Symbol

Parameter

VCC e 45V–55V

Units

Notes

FIN e 25 to 40 MHz

T e 0 Cto a70 C

CL e Circuit 1

RL e Circuit 1

Min

Typ

Max

trise

Output Rise

CLK4

08V to 26V

(Note 1 7)

CLK2

10V to VCC b 10V

CLK1

10V to VCC b 10V

All

08V to 20V

tfall

Output Fall

CLK4

26V to 08V

(Note 1 7)

CLK2

VCC b 10V to 10V

CLK1

VCC b 10V to 10V

All

08V to 20V

tSKEW

Maximum Edge-to-

to a Edges

CLK1

400

(Note 2 7)

Edge Output Skew

to a Edges

CLK1

CLK4

1000

to a Edges

CLK2

CLK4

1000

tLOCK

Time to Lock the Output to the Synch Input

100

tCYCLE

Output Duty Cycle

CLK1 Outputs

(Note 3 7)

CLK2 Output

CLK4 Output

JLT

Output Jitter (Long Term)

(Note 4 7)

tPD

Propogation Delay from XTALIN to FBKOUT

(Notes 2 4 5 6 7)

FMIN

Minimum XTALIN Frequency

MHz

FMAX

Maximum XTALIN Frequency

MHz

Note 1

trise and tfall parameters are measured at the pin of the device

Note 2

Skew is measured at 50% of VCC for CLK1 and CLK2 while it is being measured at 14V for CLK4 Limits are guaranteed by design

Note 3

Output duty cycle is measured at VDD 2 for CLK1 and CLK2 while it is being measured at 14V for CLK4 Limits are guaranteed by design

Note 4

Jitter parameter is characterized and is guaranteed by design only It measures the uncertainty of either the positive or the negative edge over 1000 cycles

It is also measured at output levels of VCC 2 Refer to Figure 3 for further explanation

Note 5

Measured from the ref input to any output pin The length of the feedback and XTALIN traces will impact this delay time

Note 6

This parameter includes pin-to-pin skew longterm jitter over 1000 cycles part-to-part variation as well as propagation delay thru the device

Note 7

The GNDA pins of the 701 must be as free of noise as possible for minimum jitter Separate analog ground plane is recommended for the PCB

Also the VCCA pin requires extra filtering to further reduce noise Ferrite beads for filtering and bypass capacitors are suggested for the VCCA pin

Circuit 1 Test Circuit

TLF11920 – 4

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