Datasheet

�� Maxim Integrated Products 4

MAX3748H

Compact, Low-Power, 155Mbps to 4.25Gbps

Limiting Amplifier

ELECTRICAL CHARACTERISTICS (continued)

= 2.97V to 3.63V, ambient temperature = -40°C to +85°C, CML output load is 50Ω to V

, C

= 0.1μF, typical values are

at T

= +25°C, V

= 3.3V, unless otherwise specified. The data input transition time is controlled by a 4th-order Bessel filter with

-3dB

= 0.75 x 2.667GHz for all data rates of 2.667Gbps and below, and with f

-3dB

= 0.75 x data rate for data rates > 3.2Gbps.)

Note 1: Guaranteed by design and characterization.

Note 2: Between sensitivity and overload, all AC specifications are met.

Note 3: The deterministic jitter caused by this filter is not included in the DJ generation specifications (input).

Note 4: 2

- 1 PRBS pattern was substituted by K28.5 pattern to determine the high-speed portion of the deterministic jitter. The

low-speed portion of the DJ (baseline wander) was obtained by measuring the eye width difference between outputs gen-

erated using K28.5 and 2

- 1 PRBS patterns.

Note 5: Random jitter was measured without using a filter at the input.

Note 6: The supply current measurement excludes the CML output currents by connecting the CML outputs to a separate V

(see Figure 1).

Note 7: The signal at the input is switched between two amplitudes, Signal_ON and Signal_OFF, as shown in Figure 2.

Note 8: Unless otherwise specified, the pattern for all LOS detect specifications is 2

- 1 PRBS.

Note 9: I

CM_INPUT

is the input common mode. I

RSSI

is the current at the RSSI output.

Note 10: Stability is defined as variation over temperature and power supply with respect to the typical gain of the part.