FAGD1651132BA [INTEL]

Support Circuit, 1-Func, PQFP32, 5 X 5 MM, 1.40 MM HEIGHT, HEAT SINK, PLASTIC, TQFP-32;


型号：	FAGD1651132BA
厂家：	INTEL
描述：	Support Circuit, 1-Func, PQFP32, 5 X 5 MM, 1.40 MM HEIGHT, HEAT SINK, PLASTIC, TQFP-32 ATM 异步传输模式电信电信集成电路
文件：	总5页 (文件大小：97K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

2.5 Gbit/s

Limiting

Amplifier

GD16511

an Intel company

Preliminary

General Information

Features

GD16511 is a wide bandwidth, limiting

amplifier designed for:

The amplifier allows for input signals

from 1 mV_PPto above 1 V_PP

30 dB gain (typ.).

SDH STM-16

SONET OC-48

optical communication systems.

Large dynamic range.

GD16511 is manufactured in a Silicon

Process and uses a single positive or

negative 5 V supply with a typical power

dissipation of 0.13 W.

3 dB bandwidth above 3 GHz.

It features a linear gain of at least 28 dB

and a 3 dB bandwidth larger than 3 GHz,

measured in a 50 W system.

Differential loop through inputs.

GD16511 is delivered in a TQFP 32 Lead

5 × 5 mm plastic package with exposed

heat slug for enhanced VEE connection.

Differential CML outputs.

GD16511 has been measured together

with a 2.5 Gbit/s Clock and Data Re-

covery (CDR) circuit, and error free

operation has been measured down to

below 3 mV_PPinput signal (10^–9BER).

Operates up to 3.5 Gbit/s.

Low power consumption: 0.13 W typ.

Small 5 × 5 mm plastic package.

Applications

Limiting amplifier for optical communi-

cation systems:

–

SDH STM-16

SONET OC-48

DIREFN

Limiter

DIN

OUT

Pulse shaper.

OUTN

Datacom up to 3.125 Gbit/s.

DIREF

VDD

VEE

Data Sheet Rev.: 5

Application Information

Inputs

Outputs

The inputs of GD16511 may be either AC

or DC coupled. In either case input termi-

nation is made through the pins DIREF /

DIREFN which must be terminated

through the external resistors (R1 and

R2) and de-coupled to ground with ca-

pacitors (C1 and C2), as shown in the

Figure 1 below.

The outputs of GD16511 are open collec-

tors (CML) and must be terminated to

VDD via an external resistor matching

the external transmission line imped-

ance. Best performance is typically

achieved using a 50 W termination resis-

tor (please refer to Figure 3 below), how-

ever the voltage gain may be adjusted by

using a different termination resistor (and

characteristic transmission line imped-

ance).

If the inputs are AC coupled GD16511

features an internal offset cancelling DC

feedback. Because of the voltage divi-

sion between the capacitors C3 and C1,

(which must have the same value) on DI

/ DIREF and C4 and C2 (which also must

have the same value) on DIN / DIREFN,

the lower cut-off frequency is in the kHz

range. Notice that the offset cancellation

will only work if DIREF and DIREFN are

not shorted together, and if the inputs are

AC coupled, as shown in the Figure 1

below.

50W

OUT

V_OUT

OUTN

V_OUTN

V_OUT

V_OUTN

C1 DIREFN

V_diff= VOUT - VOUTN

DIN

Data

from

Line

OUT +VOUTN

V_CM

DIREF

Figure 3. DC Coupled Output with 50 W

Termination

V_DI

V_DIN

AC coupling of the outputs are possible

by using a resistor of 300 W to VDD for

the DC return path and AC couple e.g.

a transmission line terminated with its

characteristic impedance, see Figure 4

below.

V_diff= VDI - VDIN

DI +VDIN

V_CM

Figure 1. AC Coupled Input

VDD VDD

300

OUT

OUTN

VTT

DIREFN

DIN

Data

from

Line

Figure 4. AC Coupled Output

DIREF

Figure 2. DC Coupling for Large Input

Ampltude

Data Sheet Rev.: 5

GD16511

Page 2 of 5

Pin List

Mnemonic:

DI, DIN

Pin No.:

6, 4

Pin Type:

Anl. Input

CML

Description:

Data inputs. If AC coupled the inputs are self biased.

Loop through termination pins for data inputs.

CML output pins. The outputs require an external path to VDD.

Ground pins.

DIREF, DIREFN

OUT, OUTN

VDD

7, 3

21, 20

2, 5, 8, 9, 19, 22,

27, 30, 32

PWR

VEE

1, 10, 11, 12, 13,

14, 15, 16, 17, 18,

23, 24, 25, 26, 28,

29, 31

PWR

Supply pins.

Heat sink

Package backside

Connected to VEE.

Package Pinout

VEE

VDD

VEE

DIREFN

DIN

VDD

OUT

VDD

OUTN

VDD

DIREF

VDD

VEE

Figure 5. Package Pinout, 32 pin - Top View

Data Sheet Rev.: 5

GD16511

Page 3 of 5

Maximum Ratings

These are the limits beyond which the component may be damaged.

All voltages in table is referred to VDD.

All currents are defined positive out of the pin.

Symbol:

V_EE

Characteristic:

Conditions:

MIN.:

-6

TYP.:

MAX.:

UNIT:

Negative Supply

V_CMLT

CML Resistor Termination Voltage

CML Output Voltage

CML Output Current

Junction Temperature

Storage Temperature

V_EE

-10

-55

-65

_OCML

Note 1

^oC

T_J

+125

+150

T_S

^oC

Note 1: Nominal supply voltages.

Electrical Characteristics

T_CASE= -40 °C to 85 °C.

Specifications are tested at 85 °C. Performance at lower temperatures has been shown to be better in engineering samples.

All voltages in table are referred to VDD

All currents are defined positive out of pin.

Symbol:

V_EE

Characteristic:

Condiions:

MIN.:

TYP.:

-5.0

MAX.: UNIT:

Negative supply voltage

Supply current

-5.5

-4.5

I_EE

_diffDI,DIN

_CMDI,DIN

Input voltage for DI, DIN

Note 4, 5

1.0

Common mode range for DC coupled data

input

DC coupled inputs

Note 6

-2.0

-1.3

0.4

-0.2

V DI,DIN

V OUT,OUTN

V_LOOUT,OUTN

t_rt_f,

Input offset voltage

Output voltage swing

Note 1, 2, 5

Note 1, 2

0.3

Minimum voltage on outputs

Output rise and fall times (10 - 90%)

Output duty cycle variation

Small signal gain

-1.2

100

D OUT,OUTN

Note 1, 3

GHz

f 3dB

3 dB bandwidth

3.0

3.5

Note 1: Output externally terminated with 50 W to VDD.

Note 2: Limiting operation.

Note 3: Linear operation.

Note 4: Single ended or differential voltage. Defined as VDI - V^DIN, see Figure 1.

Note 5: Defined as VOUT - V^OUTN, see Figure 2.

DI +V

Note 6: Defined as

^DIN, see Figure 1.

Data Sheet Rev.: 5

GD16511

Page 4 of 5

Package Outline

Figure 6. Package 32 pin

Ordering Information

Please order as specified below:

Product Name:

Intel Order Number:

Package Type:

Case Temperature Range:

GD16511-32BA

FAGD1651132BA

MM#: 836058

32pin L TQFP

-40...85 °C

GD16511, Data Sheet Rev.: 5 - Date: 24 July 2001

an Intel company

Mileparken 22, DK-2740 Skovlunde

Denmark

Phone : +45 7010 1062

Distributor:

The information herein is assumed to be

reliable. GIGA assumes no responsibility

for the use of this information, and all such

information shall be at the users own risk.

Prices and specifications are subject to

change without notice. No patent rights or

licenses to any of the circuits described

herein are implied or granted to any third

party. GIGA does not authorise or warrant

any GIGA Product for use in life support

devices and/or systems.

Fax : +45 7010 1063

E-mail : sales@giga.dk

Web site : http://www.intel.com/ixa

An Intel company

Please check our Internet web site

for latest version of this data sheet.

FAGD1651132BA [INTEL]

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