Advanced Clock Drivers Devices

Freescale Semiconductor

5

MPC9817

Figure 3. MPC9817 AC Test Reference (LVCMOS Outputs)

1. AC characteristics are design targets and pending characterization.

2. AC characteristics apply for parallel output termination of 50

Ω to V

Symbol

Characteristics

Min

Typ

Max

Unit

Condition

Input and Output Timing Specification

Input Reference Frequency

25 MHz Input

XTAL Input

25

25

MHz

MHz

VCO Frequency Range

—

400

—

MHz

Output Frequency (QAx)

FSEL0, FSEL1 = 00

FSEL0, FSEL1 = 01

FSEL0, FSEL1 = 10

FSEL0, FSEL1 = 11

Output Frequency (QREFx)

25

33

50

66

25

—

—

—

—

—

MHz

MHz

MHz

MHz

MHz

PLL locked

Reference Input Pulse Width

10

—

—

ns

@ 25 MHz

DC

Output Duty Cycle

47.5

50

52.5

%

Output Frequency Accuracy

External Reference

3. Based upon recommended crystal specifications as outlined in operation section.

—

—

100

0

ppm

ppm

With recommended crystal

see Table 3

PLL Specifications

BW

4. –3 dB point of PLL transfer characteristics.

500

kHz

Maximum PLL Lock Time

10

ms

Skew and Jitter Specifications

Output-to-Output Skew (within a bank)

100

ps

Output-to-Output Skew (between bank A and bank Ref)

200

FSEL0, FSEL1 = 00

Cycle-to-Cycle Jitter

150

ps

@ 25 MHz Input Reference

Period Jitter

100

ps

@ 25 MHz Input Reference

Output Rise/Fall Time

1

ns

20% to 80%

Z = 50

Ω

Z = 50

Ω

DUT MPC9817

Pulse

Generator

Z = 50

Ω