IDT5V2528 データシートの表示（PDF） - Integrated Device Technology

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IDT5V2528

2.5V / 3.3V PHASE-LOCK LOOP CLOCK DRIVER ZERO DELAY BUFFER

Integrated Device Technology 

IDT5V2528/A

2.5 / 3.3V PHASE-LOCK LOOP CLOCK DRIVER

INDUSTRIAL TEMPERATURE RANGE

TEST CIRCUIT AND VOLTAGE WAVEFORMS

From Output

Under Test

CL=30pF(2)

500Ω

Test Circuit for 3.3V Outputs

From Output

Under Test

CL=20pF(2)

500Ω

Test Circuit for 2.5V Outputs

CF (4)

CLK

Y, TY

IDT5V2528/A

500Ω

FBIN

PCBTRACE

CL (2)

FBOUT

CLK

FBIN

500Ω

on each Y,

TY output

FBOUT

or

Any Y, TY (3.3V)

Any Y, TY (3.3V)

Any TY (2.5V)

Any TY (2.5V)

VDD/2

VDD/2

tPHASE ERROR

VDDQ/2

tR

VDDQ/2

tSK1(o)

VDDQ/2

tR

VDDQ/2

tSK2(o)

PHASE ERROR AND SKEW CALCULATIONS(3,4)

tF

VDDQ/2

tSK3(o)

tF

VDDQ/2

80%

20%

80%

20%

NOTES:

1. All inputs pulses are supplied by generators having the following characteristics: PRR ≤ 100MHz ZO = 50Ω, tR ≤ 1.2 ns, tF ≤ 1.2 ns.

2. CL includes probe and jig capacitance.

3. The outputs are measured one at a time with one transition per measurement.

4. Phase error measurements require equal loading at outputs Y, TY, and FBOUT. CF = CL – CFBIN – CPCBtrace; CFBIN ≅ 5pF.

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