參數(shù)資料
型號: AK2500B
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: 圓形連接器
英文描述: Circular Connector; No. of Contacts:37; Series:MS27484; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:14; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:14-37 RoHS Compliant: No
中文描述: DS3/STS-1模擬線路接收器
文件頁數(shù): 6/17頁
文件大?。?/td> 78K
代理商: AK2500B
ASAHI KASEI
[AK2500B]
MS0005-E-00
- 6 -
1999/12
Equalizer Bypass
If the incoming signal is attenuated by flat loss only (zero cable loss), the internal equalizer should be bypassed
with MODE1=1, MODE2=1. (See Table 4) The level of the incoming signal should satisfy the RIN input range
(50mVpk - 1000mVpk for DS3/STS-1).
Table 4. Mode Control
MODE2
(pin24)
0
MODE1
(pin23)
0
Function
Equalizer Enable
OPEN
TEST MODE (Factory use only)
1
1
Equalizer Bypass
(1)Cable loss 0 - 450feet
+ Flat loss
0 - 450feet
Flat Loss
Cable
0 - 6dB
AK2500B
MODE2
MODE1
Transmitter
Monitoring
circuit
(
2)Flat loss only
DSX-3
Flat Loss
AK2500B
MODE2
MODE1
Equalizer bypass
1
1
Equalizer enable
0
0
Fig. 1 AK 2500B Application
Clock Acquisition
If a valid input signal is assumed to be already present at the analog input, the maximum time between the
application of device power and error-free operation is typically 20 ms.
Table 5. PLL Lock Acquisition Time
(TA = Tmin to Tmax; V+ = 3.3V
±
0.3V; GND = 0V)
Conditions
Power : Off -> On
Input data : Valid
Power : On
Input data : Loss -> Valid
min
typ
Max
Units
Power up
20
ms
Input data restore
1.0
5.0
ms
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