tza3043 NXP Semiconductors, tza3043 Datasheet - Page 10

• Manufacturer Part Number: tza3043
• Description: Gigabit Ethernet/fibre Channel Transimpedance Amplifier
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Notes
1. PSRR is defined as the ratio of the equivalent current change at the input ( I
2. The pulse width distortion (PWD) is <5% over the whole input current range. The PWD is defined as:
3. All I
2000 Mar 28
Data outputs: pins OUT and OUTQ
V
V
V
R
t
Automatic gain control loop: pad AGC
I
t
t
r
th(AGC)
att(AGC)
decay(AGC)
SYMBOL
, t
o(cm)
o(se)(p-p)
OO
o
Gigabit Ethernet/Fibre Channel
transimpedance amplifier
f
For example, a +10 mV disturbance on V
The external capacitor between pins DREF and GND has a large impact on the PSRR. The specification is valid with
an external capacitor of 1 nF.
PRBS pattern of 10
photodiode itself, with 0.3 pF allowed for the printed-circuit board layout and 0.2 pF intrinsic to the package. Noise
performance is measured differentially.
PSRR
PWD
n(tot)
=
=
measurements were made with an input capacitance of C
common mode output voltage
single-ended output voltage
(peak-to-peak value)
differential output offset
voltage
output resistance
rise time, fall time
AGC threshold current
AGC attack time
AGC decay time
pulse width
----------------------------- - 1
------------------- -
I
IPhoto
V
CC
T
PARAMETER
23
.
–
100%
where T is the clock period. The PWD is measured differentially with
CC
AC coupled; R
AC coupled; R
input current 100 A (p-p)
single-ended; DC tested
V
input current <20 A (p-p)
V
input current <20 A (p-p)
referenced to the peak
input current; tested at
10 MHz
CC
CC
at 10 MHz will typically add an extra 20 nA to the photodiode current.
= 5 V; 20% to 80%;
= 3.3 V; 20% to 80%;
CONDITIONS
10
L
L
= 50
= 50 ;
i
= 1 pF. This was comprised of 0.5 pF for the
V
75
40
100
CC
MIN.
IPhoto
2
TZA3043; TZA3043B
) to a change in supply voltage:
V
200
50
285
300
25
5
10
CC
TYP.
1.7 V
330
+100
62
430
460
Product specification
CC
MAX.
1.4 V
mV
mV
ps
ps
ms
A
s
UNIT