TZA3044T Philips Semiconductors, TZA3044T Datasheet - Page 12

• Manufacturer Part Number: TZA3044T
• Description: 1.25 Gbits/s Gigabit Ethernet postamplifiers
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Notes
1. DOUT, DOUTQ, ST and STQ outputs are left unconnected.
2. If the input is DC coupled, the preceding amplifier’s output offset voltage should not exceed these limits, in order to
3.
4. The reference currents can be set by a resistor between V
5. Internal pull-down resistor of 500 k to DGND.
6. Internal series resistor of 1 k .
1998 Jul 07
PECL outputs: ST and STQ
V
V
t
t
PECL input: JAM
V
V
I
Reference voltage output: V
V
SYMBOL
r
f
I(JAM)
OL
OH
IL
IH
ref
1.25 Gbits/s Gigabit Ethernet postamplifiers
avoid malfunctioning of the DC offset compensation circuit.
level-detect range is from 2 to 12 mV (p-p) single-ended. See section “Input signal level-detection” for detailed
information.
Input RMS noise
LOW-level output voltage
HIGH-level output voltage
rise time
fall time
LOW-level input voltage
HIGH-level input voltage
JAM input current
reference voltage
PARAMETER
=
total output RMS noise
----------------------------------------------------------- -
low frequency gain
ref
R
R
20% to 80%
80% to 20%
note 5
note 6
L
L
= 50
= 50
CONDITIONS
to V
to V
12
CC
CC
CCA
2 V
2 V
and pin RSET. The corresponding input signal
V
V
V
1.165
10
CC
CC
CC
MIN.
1840
1100
1165
TZA3044T; TZA3044U
1.20
TYP.
Objective specification
V
V
600
200
V
+10
1.235
CC
CC
CC
MAX.
1620 mV
900
1490 mV
mV
ns
ns
mV
V
UNIT
A