HDMP-1687 Ver la hoja de datos (PDF) - HP => Agilent Technologies

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componentes Descripción

Fabricante

HDMP-1687

Four Channel SerDes Circuit for Gigabit Ethernet and Fibre Channel

HP => Agilent Technologies 

A 70841B

PATTERN

GENERATOR*

0000011111

+ DATA

– DATA

1.25 GHz

A 70311A

CLOCK SOURCE

125 MHz

VARIABLE

DELAY

BIAS

TEE

A 83480A

OSCILLOSCOPE

TRIGGER

CH1 CH2

+SOi –SOi

HDMP-1687

RFCT

LOOP

TXi(0-9)

*PATTERN

GENERATOR

PROVIDES A

DIVIDE BY 10

FUNCTION

1.4 V

0011111000

(STATIC K28.7)

A. BLOCK DIAGRAM OF RJ MEASUREMENT METHOD

A 70311A

CLOCK SOURCE

1.25 GHz

DIVIDE BY 10

CIRCUIT

(DUAL OUTPUT)

DIVIDE

BY 2

A 70841B

PATTERN

GENERATOR

+K28.5, –K28.5

+ DATA

– DATA

A 83480A

OSCILLOSCOPE

TRIGGER

CH1 CH2

VARIABLE

DELAY

TTL

125 MHz

+SOi –SOi

–SIi

+SIi

HDMP-1687

RFCT

SYNC

LOOP

TXi(0..9) RXi(0..9)

B. BLOCK DIAGRAM OF DJ MEASUREMENT METHOD

Figure 8. Transmitter jitter measurement method.

Thermal and Power Characteristics (TRx)

T = 0°C Ambient to 85°C Case, VCC = 3.15 V to 3.45 V

Symbol

Parameter

Units

Typ.

Max.

PD, TRx

Transceiver Power Dissipation, Outputs Connected

W

per Recommended Bias Terminations with Idle Pattern

2.6

3.3

θJA[1]

θJC[2]

ψJT[3]

Thermal Resistance: Junction to Ambient

°C/W

15.8

Thermal Resistance: Junction to Case

°C/W

2.5

Thermal Characterization Parameter: Junction to Package Top °C/W

1.1

Notes:

1. θJA is measured in a still air environment at 25°C on a standard 3 x 3" FR4 PCB as specified in EIA/JESD 51-7.

2. θJC data relevant for packages used with external heat sink.

3. To determine the actual junction temperature in a given application, use the following: TJ = TT + (ψJT x PD), where TT is the case temperature

measured on the top center of the package and PD is the power being dissipated.

I/O Type Definitions

I/O Type

Definition

I-TTL

Input TTL, floats high when left open

O-TTL

Output TTL

HS_OUT

50 Ω matched output driver. Will drive AC coupled 50 Ω loads. PECL Level Compatible (Figure 10).

HS_IN

PECL Level Compatible. Must be AC coupled (Figure 10).

C

External Circuit Node

S

Power Supply or Ground

Pin Input Capacitance (TRx)

Symbol

Parameter

CINPUT

Input Capacitance on TTL Input Pins

Units

pF

Typ.

Max.

1.6

9

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