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L8576B 参数 Datasheet PDF下载

L8576B图片预览
型号: L8576B
PDF下载: 下载PDF文件 查看货源
内容描述: 双振铃SLIC [Dual Ringing SLIC]
分类和应用:
文件页数/大小: 26 页 / 564 K
品牌: AGERE [ AGERE SYSTEMS ]
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Data Sheet  
May 2001  
L8576B Dual Ringing SLIC  
Electrical Characteristics (continued)  
Table 7. ac Feed Characteristics (continued)  
Parameter1  
Min  
Typ  
Max  
Unit  
Gain vs. Level (transmit and receive; 0 dBV reference)2:  
–50 dB to +3 dB  
–0.05  
0
0.05  
dB  
Return Loss3:  
200 Hz—500 Hz  
500 Hz—3400 Hz  
20  
26  
24  
29  
dB  
dB  
Transhybrid Loss3:  
200 Hz—500 Hz  
500 Hz—2500 Hz  
2500 Hz—3400 Hz  
20  
26  
26  
24  
29  
29  
dB  
dB  
dB  
Idle-channel Noise (Tip/Ring):  
Psophometric2  
–77  
12  
20  
dBmp  
dBrnC  
dBrn  
C-message  
3 kHz Flat2  
Idle-channel Noise (XMT):  
Psophometric2  
C-message  
–77  
12  
20  
dBmp0  
dBrnC0  
dBrn0  
3 kHz Flat2  
1. Requires external components connected as shown in Figure 2. Transmission characteristics are specified assuming a 600 resistive ter-  
mination and ±1% external resistors.  
2. This parameter is not tested in production. It is guaranteed by design and device characterization.  
3. Return loss and transhybrid loss are functions of device gain accuracies and the external hybrid circuit. Guaranteed performance assumes  
1% tolerance components.  
Table 8. Isolation Between Channels  
Parameter1  
Min  
Typ  
Max  
Unit  
Interchannel Small-signal Crosstalk. (Both channels in forward or reverse  
battery state.) (2-wire to 2-wire, 2-wire to 4-wire, 4-wire to 4-wire.)  
–90  
–80  
dB  
Impulse Noise. (One channel ringing, other channel in forward or reverse  
battery state.)  
40  
47  
dBrnC0  
1. These parameters are not tested in production. They are guaranteed by design and device characterization.  
Table 9. Data Interface and Logic  
Parameter1  
Symbol  
Min  
Typ  
Max  
Unit  
High-level Input Voltage (B2, RNGNG, and NDISC)  
Low-level Input Voltage (B2, RNGNG, and NDISC)  
Input Bias Current (high) (B2, RNGNG, and NDISC)  
Input Bias Current (low) (B2, RNGNG, and NDISC)  
VIH  
VIL  
IIH  
2
VCC  
0.7  
V
V
0
–40  
–75  
–100  
–200  
µA  
µA  
IIL  
High-level Output Voltage (NSTAT, open collector with inter-  
nal pull-up resistor):  
(IOUT = –20 µA)  
(IOUT = –1 µA)  
VOH  
VOH  
2.4  
4.3  
5.0  
VCC  
V
V
Low-level Output Voltage (NSTAT, open collector with internal  
VOL  
0
0.2  
0.4  
V
pull-up resistor) (IOUT = 200 µA)  
1. All logic voltages are referenced to AGND.  
Agere Systems Inc.  
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