ADN4665 datasheet(4/12 Pages) AD

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ADN4665

Rev. 0 | Page 4 of 12

TIMING CHARACTERISTICS

VCC = 3.0 V to 3.6 V, RL = 100 Ω, CL1 = 15 pF to GND, all specifications TMIN to TMAX, unless otherwise noted. All typical values are given

for VCC = 3.3 V, TA = 25°C.

Table 2.

Parameter2

Symbol

Min

Typ

Max

Unit

Conditions/Comments3, 4

AC CHARACTERISTICS

Differential Propagation Delay, High to Low

tPHLD

0.8

1.18

2.0

See Figure 3 and Figure 4

Differential Propagation Delay, Low to High

tPLHD

0.8

1.25

2.0

See Figure 3 and Figure 4

Differential Pulse Skew |tPHLD − tPLHD|

tSKD15

0.07

0.4

See Figure 3 and Figure 4

Channel-to-Channel Skew

tSKD26

0.1

0.5

See Figure 3 and Figure 4

Differential Part-to-Part Skew

tSKD37

1.0

See Figure 3 and Figure 4

Differential Part-to-Part Skew

tSKD48

1.2

See Figure 3 and Figure 4

Rise Time

tTLH

0.38

1.5

See Figure 3 and Figure 4

Fall Time

tTHL

0.4

1.5

See Figure 3 and Figure 4

Disable Time High to Inactive

tPHZ

See Figure 5 and Figure 6

Disable Time Low to Inactive

tPLZ

See Figure 5 and Figure 6

Enable Time Inactive to High

tPZH

See Figure 5 and Figure 6

Enable Time Inactive to Low

tPZL

See Figure 5 and Figure 6

Maximum Operating Frequency

fMAX9

200

250

MHz

See Figure 5 and Figure 6

RL/2

DINx

DOUTx+

DOUTx–

VCC

VOS

VOD

NOTES

1. DRIVER IS ENABLED.

1 CL includes probe and jig capacitance.

2 AC parameters are guaranteed by design and characterization.

3 Generator waveform for all tests, unless otherwise specified: f = 50 MHz, ZO = 50 Ω, tr ≤ 1 ns, and tf ≤ 1 ns.

4 All input voltages are for one channel, unless otherwise specified. Other inputs are set to GND.

5 tSKD1 = |tPHLD − tPLHD| is the magnitude difference in differential propagation delay time between the positive-going edge and the negative-going edge of the

same channel.

6 tSKD2 is the differential channel-to-channel skew of any event on the same device.

7 tSKD3, differential part-to-part skew, is defined as the difference between the minimum and maximum specified differential propagation delays. This specification

applies to devices at the same VCC and within 5°C of each other within the operating temperature range.

8 tSKD4, part-to-part skew, is the differential channel-to-channel skew of any event between devices. This specification applies to devices over the recommended operating

temperature and voltage ranges, and across process distribution. tSKD4 is defined as |maximum − minimum| differential propagation delay.

9 fMAX generator input conditions: tr = tf < 1 ns (0% to 100%), 50% duty cycle, 0 V to 3 V. Output criteria: duty cycle = 45% to 55%, VOD > 250 mV, all channels switching.

Test Circuits and Timing Diagrams

Figure 2. Test Circuit for Driver VOD and VOS

DINx

DOUTx+

DOUTx–

DRIVER IS

ENABLED

NOTES

1. CL INCLUDES PROBE AND JIG CAPACITANCE.

SIGNAL

GENERATOR

VCC

Ω

Figure 3. Test Circuit for Driver Propagation Delay and Transition Time

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