EVM142AHF datasheet(13/19 Pages) SEMTECH

13 / 19 page

 2000 Semtech Corp.

www.semtech.com

EDGE HIGH-PERFORMANCE PRODUCTS

Edge142

Application Information (continued)

EL11 Clock Spreader Tpd vs. 1%-99% Duty Cycle

Duty Cycle [%] (Period=100 ns)

-100

-80

-60

-40

-20

100

1 02 0

3 0

4 05 06 0

7 080

9 0

1 0 0

Tpd+ Error

Tpd- Error

Edge 142 Tpd+ vs. 1%-99% Duty Cycle

Duty Cycle [%] (Period=100 ns)

-100

-80

-60

-40

-20

100

1 0

2 03 04 0

5 06 07 0

809 0 1 0 0

Tpd+ Error, +0.1V

Tpd+ Error, -0.1V

Tpd+ Error, -0.3V

Tpd+ Error, -0.7V

Tpd+ Error, -0.9V

Tpd+ Error, -1.1V

Tpd+ Error, -1.3V

REXT2=2.94K

Edge 142 Tpd- vs. 1%-99% Duty Cycle

Duty Cycle [%] (Period=100 ns)

-100

-80

-60

-40

-20

100

1 0

2 03 04 0

5 06 07 0

809 0 1 0 0

Tpd- Error, +0.1V

Tpd- Error, -0.1V

Tpd- Error, -0.3V

Tpd- Error, -0.7V

Tpd- Error, -0.9V

Tpd- Error, -1.1V

Tpd- Error, -1.3V

REXT2=2.94K

Prop Delay vs. Duty Cycle

The 142 shows very little change in propagation delay

vs. input duty cycle. The following three charts show

the variation in the prop delay of a rising edge and a

falling edge as the duty cycle is varied from 1% to 99%.

Since the input signal period is 100 ns, a 1% duty cycle

corresponds to a 1 ns positive input pulse. A 99% duty

cycle corresponds to a 1 ns negative input pulse.

The first chart shows the Motorola 10EL11 clock

spreader timing error for both the rising and falling edge.

This information is used as a reference to compare the

142 against.

The second and third charts show the 142 under identical

conditions. The data is broken out into one chart for the

rising edge and a separate chart for the falling edge. In

addition, the timing error is listed over the entire delay

range of the 142.

EVM142AHF bảng dữ liệu(PDF) 13 Page - Semtech Corporation

EVM142AHF bảng dữ liệu(HTML) 13 Page - Semtech Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

bảng dữ liệu tải về

Link URL