參數(shù)資料
型號(hào)： OM5808
廠商： NXP Semiconductors N.V.
英文描述： SDH/SONET Data clock Recovery(SDH/SONET 數(shù)據(jù)時(shí)鐘恢復(fù)單元 STM1/4/16 OC3/12/48 GE)
中文描述： SDH / SONET的時(shí)鐘數(shù)據(jù)恢復(fù)（SDH / SONET的數(shù)據(jù)時(shí)鐘恢復(fù)單元STM1/4/16 OC3/12/48通用電氣）
文件頁(yè)數(shù)： 23/52頁(yè)
文件大?。?/td> 1318K
代理商： OM5808
OM5808 demoboard negative supply for 2.5 Gb/s
TZA3014 / TZA3019 with HBCC package
Philips Semiconductors
23
Application Note
AN99071
3.2.1
Option A: General
The TZA3019 is a 2.5 Gb/s dual postamplifier. Option “A” has two Received Signal Strength Indicators.
3.2.2
Power supply
P11-1: -3.3 volt, P11-2: GND, P11-3: not connected
C1, C41, L12 and C12, C23, L7 are decoupling networks for the power supply.
Z1 is added to protect the circuit against over voltage.
C4 & L9, C5 & L8, C2 & L10 and C3 & L11 are local decoupling networks.
3.2.3
Inputs & outputs
The TZA3019A has two differential inputs which are AC coupled (C19, C22, C21 and C20). The input signals
should be connected to the SMA connectors P5 & P6 and P7 & P8. The two outputs of the TZA3019A are
differential and they are DC coupled, the outputs should be connected to SMA connectors P3 & P4 and P1 & P2.
With R15 (LEVEL1) and R16 (LEVEL2) the output level of each output can be adjusted.
3.2.4
S1 settings
By setting S1 the output configuration can be chosen. For each output, the input can be selected (S1-1 & S1-2).
It is also possible to invert the outputs (S1-3 & S1-4). Table 4 gives an overview of the possible S1 settings.
3.2.5
RSSI1 and RSSI2
Option “A” has two Received Signal Strength Indicators. RSSI1 at pin 27 and RSSI2 at pin 26. These outputs can
be observed at SMB connectors P9 (RSSI1) and P10 (RSSI2). With S2 and S3 is it possible to set the Received
Signal Strength Indicators in active or power down mode this is shown in table 5. If pin 10 & 11 are connected to
VEE or open, RSSI will be in power down mode, if pin 10 & 11 are above VEE, RSSI 1 & 2 are active.
TABLE 4 Settings of switch S1
S1-1
OUT1
off
input 1
on
input 2
S1-2
off
on
OUT2
input 2
input 1
S1-3
off
on
OUT1
OUT1
OUT1Q
S1-4
off
on
OUT2
OUT2
OUT2Q
TABLE 5 Settings of switch S2 and S3
S2
LOS2
off
power down
on
active
S3
off
on
LOS1
power down
active
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