TZA3030 Просмотр технического описания (PDF) - Philips Electronics

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TZA3030

SDH/SONET STM1/OC3 optical receiver

Philips Electronics 

Philips Semiconductors

SDH/SONET STM1/OC3 optical receiver

Objective specification

TZA3030

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX. UNIT

PECL outputs: LOS and LOSQ

VOH

HIGH-level output voltage 50 Ω to VCC − 2 V

VCC − 1100 −

VOL

LOW-level output voltage

50 Ω to VCC − 2 V

VCC − 1840 −

VOO

output offset voltage

measured differentially −10

−

tr

rise time

20% to 80%

−

−

tf

fall time

80% to 20%

−

−

VCC − 900 mV

VCC − 1620 mV

+10

mV

600

ns

200

ns

CML outputs: OUTCML and OUTQCML

VO

output voltage

measured single-ended; VCC − 260 −

50 Ω to VCC

VCC

mV

Vo(se)(p-p) output voltage single-ended 50 Ω to VCC

(peak-to-peak value)

150

200

260

mV

VOO

output offset voltage

Ro

output resistance

tr

rise time

tf

fall time

measured differentially; −10

−

50 Ω to VCC

+10

mV

measured single-ended 80

100

120

Ω

20% to 80%;

−

tbf

−

ps

RL = 50 Ω; CL = 1 pF

80% to 20%;

−

tbf

−

ps

RL = 50 Ω; CL = 1 pF

CMOS input: OUTSEL

VIL

LOW-level input voltage

VIH

HIGH-level input voltage

−

0.4

0.8

V

VCC − 1

VCC − 0.5 −

V

CMOS output: LOSTTL

VOL

LOW-level output voltage

VOH

HIGH-level output voltage

0

−

VCC − 0.2 −

0.2

V

VCC

V

Notes

1. OUTPECL, OUTQPECL, OUTCML, OUTQCML, LOS and LOSQ outputs are left unconnected. OUTPECL and

OUTQPECL outputs are active.

2. OUTPECL and OUTQPECL outputs are terminated with 50 Ω to VT. VT is an external termination voltage for PECL

outputs and is 2 V below the supply voltage. OUTCML, OUTQCML, LOS and LOSQ outputs are left unconnected.

3. OUTCML and OUTQCML outputs are terminated with 50 Ω to VCCD; CML outputs are active. OUTPECL,

OUTQPECL, LOS and LOSQ outputs are left unconnected.

4. The bandwidth is set to 120 MHz by default. It can be varied between 90 and 150 MHz by adjusting the voltage at

pin BWC.

5. All In(tot) measurements were made with an input capacitance of Ci = 1.2 pF. This was comprised of 0.7 pF for the

photodiode itself, with 0.3 pF allowed for the PCB layout and 0.2 pF intrinsic to the package.

6. PSRR is defined as the ratio of the equivalent current change at the input (∆IIPhoto) to a change in supply voltage:

PSRR = ∆---∆--I--IV-P----hC--o-C--t--o-

For example, a 4 mV disturbance on VCCat 10 MHz will typically generate the equivalent of 2 nA extra photodiode

current.

1998 Aug 24

11

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