OQ2538HP_97 PHILIPS [NXP Semiconductors], OQ2538HP_97 Datasheet - Page 15

• Manufacturer Part Number: OQ2538HP_97
• Description: SDH/SONET main amplifier
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
Notes
1. No special cooling is required in the application if the total thermal resistance R
2. The temperature of the PCB in the vicinity of the IC is taken to be the ambient temperature.
3. The input signal must be AC coupled to the inputs through a coupling capacitance >22 nF.
4. V
5. The DC voltage is fixed internally; only AC-coupling of the input signal is allowed.
6. V
7. See Section “RF input matching circuit” for detailed information.
8. All signal ports are AC matched to 50
9. See section “RF gain and group delay measurements”.
10. F is the noise figure for a differential application and is measured at 1 GHz. See Section “Noise figure
11. An external 100 nF capacitor is connected at each output to remove any spurious high frequency signals.
12. The specified values are for indication only. The range is not production tested and guaranteed.
13. Voltage difference between AGC (LOS) and AGCDC (LOSDC), measured with a differential input signal of
14. The offset is measured with inputs IN and INQ shorted together.
15. The band gap voltage may not be used as an external reference.
16. Both outputs are connected to ground through a 50
17. The output levels are dependent on load impedance. The specified values assume an external load impedance of
1997 Nov 26
Main amplifier outputs: OUT and OUTQ; note 16
V
V
t
t
Z
Band gap reference decoupling: CAPA
V
SYMBOL
r
f
o
O
OH
OL
SDH/SONET main amplifier
signal of the specified peak-to-peak value. The lower specified limit is usually called the input sensitivity. This value
is defined as a 20% increase in rise and fall times when compared to rise and fall times with a complementary input
signal of 10 mV (p-p) applied to IN and INQ.
over the entire bandwidth.
measurements”.
Any circuitry driven from these pins must have an input impedance >50 k .
600 mV (p-p) to pins IN and INQ.
50 . If the external 100
75% of the specified values. (see also Section “RF gain and group delay measurements”).
i(p-p)
IO
= V
is the input signal on IN and INQ for full output clipping. It is assumed that both inputs carry a complementary
decoupling voltage
HIGH-level output voltage
LOW-level output voltage
differential output rise time
differential output fall time
single-ended output impedance
I
V
IQ
PARAMETER
matching resistors are connected at pins OUT and OUTQ, the output levels will fall to
and are measured at 1 GHz (see Fig.7). Flatness deviations are within 3 dB
referenced to V
open output
note 17
input signal >2 mV (p-p)
input signal >2 mV (p-p)
see Fig.6
CONDITIONS
load resistance and carry complementary signals.
15
EE
;
83
20
280
MIN.
th(j-a)
is less than 90 K/W.
2.9
100
100
100
5
200
TYP.
Preliminary specification
OQ2538HP
0
150
150
117
140
MAX.
V
mV
mV
ps
ps
UNIT