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PDF TZA3043B Data sheet ( Hoja de datos )
| Número de pieza | TZA3043B | |
| Descripción | Gigabit Ethernet/Fibre Channel transimpedance amplifier | |
| Fabricantes | NXP Semiconductors | |
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INTEGRATED CIRCUITS
DATA SHEET
TZA3043; TZA3043B
Gigabit Ethernet/Fibre Channel
transimpedance amplifier
Product specification
Supersedes data of 1998 Jul 08
File under Integrated Circuits, IC19
2000 Mar 28
1 page  
Philips Semiconductors
Gigabit Ethernet/Fibre Channel
transimpedance amplifier
Product specification
TZA3043; TZA3043B
FUNCTIONAL DESCRIPTION
The TZA3043 is a transimpedance amplifier intended for
use in fibre optic links for signal recovery in Fibre Channel
or Gigabit Ethernet applications. It amplifies the current
generated by a photo detector (PIN diode or avalanche
photodiode) and transforms it into a differential output
voltage. The most important characteristics of the
TZA3043 are high receiver sensitivity and wide dynamic
range. High receiver sensitivity is achieved by minimizing
noise in the transimpedance amplifier.
Input circuit
The signal current generated by a PIN diode can vary
between 2.5 µA to 1.5 mA (p-p).
An AGC loop is implemented to make it possible to handle
such a wide dynamic range. The AGC loop increases the
dynamic range of the receiver by reducing the feedback
resistance of the preamplifier.
The AGC loop hold capacitor is integrated on-chip, so an
external capacitor is not needed for AGC.
AGC monitoring
The AGC voltage can be monitored at pad 13 on the bare
die (TZA3043U/TZA3043BU). Pad 13 is not bonded in the
packaged device (TZA3043T/TZA3043BT). This pad can
be left unconnected during normal operation. It can also be
used to force an external AGC voltage. If pad 13 (AGC) is
connected to GND, the internal AGC loop is disabled and
the receiver gain is at a maximum. The maximum input
current is then approximately 75 µA.
Output circuit
A differential amplifier converts the output of the
preamplifier to a differential voltage (see Fig.5).
The logic level symbol definitions for the differential
outputs are shown in Fig.6.
handbook, full pagewidth
VCC
800 Ω 800 Ω
30 Ω
30 Ω
OUTQ
OUT
4.5 mA
2 mA
4.5 mA
MGR290
Fig.5 Differential data output circuit.
handbook, full pagewidth
2000 Mar 28
VO(max)
VOQH
VOH
VCC
Vo(p-p)
VOQL
VOL
VO(min)
VOO
MGR243
Fig.6 Logic level symbol definitions for data outputs OUT and OUTQ.
5
5 Page 
Philips Semiconductors
Gigabit Ethernet/Fibre Channel
transimpedance amplifier
TYPICAL PERFORMANCE CHARACTERISTICS
handboICokC,4h0alfpage
(mA)
38
36
34
32
30
(1)
(2)
(3)
MGU112
28
−40
0
40 80 120
Tj (°C)
(1) VCC = 5 V.
(2) VCC = 3.3 V.
(3) VCC = 3 V.
Fig.10 Supply current as a function of the junction
temperature.
Product specification
TZA3043; TZA3043B
handboIoC3k4C, h.8alfpage
(mA)
34.4
34.0
33.6
33.2
32.8
3
4
MGU113
56
VCC (V)
Fig.11 Supply current as a function of the supply
voltage.
handbook8,2h5alfpage
Vi
(mV)
823
821
819
MGU114
handboo9k,2h0alfpage
Vi
(mV)
840
760
(1)
(2) (3)
MGU115
817
34 56
VCC (V)
Fig.12 Input voltage as a function of the supply
voltage.
2000 Mar 28
680
−40
0
40 80 120
Tj (°C)
(1) VCC = 5 V.
(2) VCC = 3.3 V.
(3) VCC = 3 V.
Fig.13 Input voltage as a function of the junction
temperature.
11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet TZA3043B.PDF ] | |
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| TZA3043BT | Gigabit Ethernet/Fibre Channel transimpedance amplifier | NXP Semiconductors |
| TZA3043BU | Gigabit Ethernet/Fibre Channel transimpedance amplifier | NXP Semiconductors |
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