Micrel, Inc.

SY88149CL

November 2005

5

M9999-112205-A1

AC Electrical Characteristics

Symbol

Parameter

Condition

Min

Typ

Max

Units

Output Rise/Fall Time

(20% to 80%)

Note 4

260

ps

Deterministic

Random

Note 5

Note 6

15

5

Differential Input Voltage Swing

Figure 1

5

1800

Differential Output Voltage

Swing

1500

SD Release Time

100

500

ns

SD Assert Time

100

500

ns

Low SD Assert Level

3.4

Low SD De-assert Level

2.3

Low SD Hysteresis

3.4

dB

Medium SD Assert Level

6.2

8

Medium SD De-assert Level

3

4.2

Medium SD Hysteresis

2

3.4

5

dB

High SD Assert Level

16.4

20

High SD De-assert Level

8

10.8

High SD Hysteresis

2

3.4

5

dB

3dB Bandwidth

1

GHz

Differential Voltage Gain

42

dB

Single-ended Small-Signal Gain

36

dB

Notes:

4.

Amplifier in limiting mode. Input is a 200MHz square wave.

5.

6.

7.

This specification defines electrical hysteresis as 20log(SD Assert/SD De-assert). The ratio between optical hysteresis and

electrical hysteresis is found to vary between 1.5 and 2 depending upon the level of received optical power and ROSA

characteristics. Based upon that ratio, the optical hysteresis corresponding to the electrical hysteresis range 2dB-5dB, shown

in the AC characteristics table, will be 1dB-4dB optical Hysteresis.

8.

its associated de-assert amplitude.