TZA3019AHT View Datasheet(PDF) - Philips Electronics

Part Name

Description

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TZA3019AHT

2.5 Gbits/s dual postamplifier with level detectors and 2 × 2 switch

Philips Electronics 

Philips Semiconductors

2.5 Gbits/s dual postamplifier with level

detectors and 2 × 2 switch

Preliminary specification

TZA3019

handbook, halfpage

TZA3019

5 kΩ

LOS1,

LOS2

GND1A,

GND2A

GND

56 kΩ

ILOS

VEE

MGS561

a. Negative supply and negative logic.

handbook, halfpage

GND

TZA3019

5 kΩ

LOS1,

LOS2

GND1A,

GND2A

VCC

5.6 kΩ

ILOS

VEE

MGS562

b. Negative supply and positive logic.

VCC − VEE < 7 V.

handbook, halfpage

TZA3019

5 kΩ

LOS1,

LOS2

GND1A,

GND2A

VCC

56 kΩ

ILOS

GND

MGS563

c. Positive supply and positive logic.

Fig.11 Loss of signal outputs, pins LOS1 and LOS2.

Supply current

For the supply currents IEE1B and IEE2B, see Fig.12.

Using a positive supply voltage

Although the TZA3019 has been designed to use a single

−3.3 V supply voltage (see Fig.13), a +3.3 V supply

(see Fig.14) can also be used. However, care should be

taken with respect to RF transmission lines. The on-chip

signals refer to the various ground pins as being positive

supply pins in a +3.3 V application. The external

transmission lines will most likely be referred to the

pins VEE1A, VEE2A, VEE1B and VEE2B, being the system

ground. The RF signals will change from one reference

plane to another when interfacing the RF inputs and

outputs. A positive supply application is very vulnerable to

interference with respect to this point. For a successful

+3.3 V application, special care should be taken when

designing the PCB layout in order to reduce the influence

of interference and to keep the positive supply voltage as

clean as possible.

60

(1)

58

IEE1B, 50

IEE2B

(mA) 40

30

20

17

10

5

0

0

0.2

(1) IEE1B and IEE2B at 25 °C.

0.5

0.8

Vo(se)(p-p) (V)

1

MGS566

Fig.12 Supply current as a function of output

voltage

2000 Apr 10

14

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