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TZA3047B

30 Mbits/s up to 1.25 Gbits/s laser drivers

Philips Electronics 

Philips Semiconductors

30 Mbits/s up to 1.25 Gbits/s laser drivers

Product specification

TZA3047A; TZA3047B

SYMBOL

PARAMETER

CONDITIONS

VBIAS

output voltage on pin BIAS normal operation

VCCO = 3.3 V

VCCO = 5 V

Modulation current source: pin MODIN

gm(mod)

modulation

transconductance

Isource(MODIN) source current at

pin MODIN

VMODIN = 0.5 to 1.5 V

VLA = VLAQ = VCCO = 3.3 V

VLA = VLAQ = VCCO = 4.5 V

VMODIN = 0.5 to 1.5 V

Modulation current outputs: pins LA

Io(LA)(max)(on)

maximum laser

VMODIN = 1.8 V;

modulation output current VLA = VCCO = 3.3 V; note 4

at LA on

Io(LA)(min)(on)

Io(LA)(min)(off)

Zo(LA), Zo(LAQ)

minimum laser modulation

output current at LA on

minimum laser modulation

output current at LA off

output impedance pins LA

and LAQ

VMODIN = 0 to 0.4 V;

VLA = VCCO = 3.3 V; note 4

VLA = VCCO = 3.3 V; note 4

VMODIN = 0.5 V

VMODIN = 1.5 V

Io(LA)(dis),

Io(LAQ)(dis)

non-inverted and inverted VENABLE < 0.8 V

laser modulation output

current at disable

Vo(LA)min

minimum output voltage at

pin LA

Enable function: pin ENABLE

TZA3047A; VCCO = 3.3 V

TZA3047B; VCCO = 3.3 V

TZA3047B; VCCO = 5 V

VIL

LOW-level input voltage bias and modulation currents

disabled

VIH

HIGH-level input voltage bias and modulation currents

enabled

Rpu(int)

internal pull-up resistance

Alarm reset: pin ALRESET

VIL

VIH

Rpd(int)

LOW-level input voltage

HIGH-level input voltage

internal pull-down

resistance

no reset

reset

MIN.

TYP.

0.4

−

0.8

−

78

80

−110

90

95

−100

100 −

−

5

−

−

−

−

80

100

−

−

1.6

−

1.2

−

1.6

−

−

−

2.0

−

16

20

−

−

2.0

−

7

10

MAX. UNIT

3.6 V

4.1 V

105 mA/V

110 mA/V

−95 µA

−

mA

6

mA

0.8 mA

2

mA

125 Ω

200 µA

−

V

−

V

−

V

0.8 V

−

V

30

kΩ

0.8 V

−

V

15

kΩ

2003 Jun 05

12

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