HDMP-1637A Ver la hoja de datos (PDF) - HP => Agilent Technologies

Número de pieza

componentes Descripción

Fabricante

HDMP-1637A

Gigabit Ethernet SerDes Circuit with Differential PECL Clock Inputs

HP => Agilent Technologies 

9

HDMP-1637A (Transmitter Section)

Output Jitter Characteristics (measured with equivalent parts which have TTL REFCLK input)

TA = 0°C to +70°C, VCC = 3.15 V to 3.45 V

Symbol

Parameter

Units Typ.

RJ[1]

Random Jitter at DOUT, the High Speed Electrical Data Port, specified as

ps

8

1 sigma deviation of the 50% crossing point (RMS)

DJ[1] Deterministic Jitter at DOUT, the High Speed Electrical Data Port (pk-pk)

ps

25

Note: 1. Defined by Fibre Channel Specification X3.230-1994 FC-PH Standard, Annex A, Section A.4 and tested using measurement

method shown in Figure 8.

70841B

PATTERN

GENERATOR*

0000011111

+ DATA

- DATA

125 MHz

1.25 GHz

70311A

CLOCK SOURCE

* PATTERN

GENERATOR

PROVIDES A

DIVIDE BY

10 FUNCTION.

PECL

83480A

OSCILLOSCOPE

TRIGGER

CH1 CH2

+DOUT -DOUT

HDMP-1637A

REFCLK LOOPEN

Txi[0..9]

0011111000

(STATIC K28.7)

A. BLOCK DIAGRAM OF RJ MEASUREMENT METHOD

Figure 8. Transmitter Jitter Measurement Method.

70311A

CLOCK SOURCE

DIVIDE

BY 10

CIRCUIT

(DUAL

OUTPUT)

1.25 GHz

DIVIDE

BY 2

70841B

PATTERN

GENERATOR

+K28.5, -K28.5

+ DATA

- DATA

83480A

OSCILLOSCOPE

TRIGGER

CH1 CH2

VARIABLE

DELAY

PECL

125 MHz

+DOUT -DOUTi

-DIN

+DIN

HDMP-1637A

REFCLK

ENBYTSYNC

LOOPEN

Txi[0..9] Rx[0..9]

B. BLOCK DIAGRAM OF DJ MEASUREMENT METHOD

HDMP-1637A (TRx)

Thermal and Power Temperature Characteristics

TA = 0°C to +70°C, VCC = 3.15 V to 3.45 V

Symbol

Parameter

PD,TRx[1,2]

Transceiver Power Dissipation, Outputs connected per

recommended bias terminations with idle pattern

Θjc[3]

Thermal Resistance, Junction to Case

Units

mW

°C/W

Typ.

620

Max.

900

11

Notes:

1. PD is obtained by multiplying VCC by ICC and subtracting the power dissipated outside the chip at the high speed bias resistors.

2. Specified with high speed outputs biased with 150 Ω resistors and receiver TTL outputs driving 10 pF loads.

3. Based on independent package testing by Agilent Technologies. Θja for these devices is 56.1°C/W for the HDMP-1637A. Θja is

measured on a standard 3x3" FR4 PCB in a still air environment. To determine the actual junction temperature in a given

application, use the following: Tj = TC + (Θjc x PD), where TC is the case temperature measured on the top center of the package

and PD is the power being dissipated.

Share Link: