Data Sheet
March 1997
L7554 Low-Power SLIC
Applications (continued)
Characteristic Curves
0
0
–10
RECEIVE GAIN
–10
–20
–30
–40
–50
–60
CURRENT
LIMIT
SPEC.
–20
–30
BELOW
CURRENT
LIMIT
HYBRID BALANCE
–40
–50
–70
–80
100
1000
104
105
10
100
1000
104
105
106
FREQUENCY (Hz)
FREQUENCY (Hz)
12-2828 (C)
12-2830 (C)
Figure 13. 7551 Receive Gain and Hybrid Balance
vs. Frequency
Figure 15. 7551 Typical VCC Power Supply Rejection
0
–10
0
TRANSMIT GAIN
–10
–20
CURRENT
LIMIT
–30
–20
–40
SPECIFICATION RANGE
–50
–30
RETURN LOSS
–60
BELOW
CURRENT
LIMIT
–40
–50
–70
–80
104
105
104
105
106
100
1000
FREQUENCY (Hz)
10
100
1000
FREQUENCY (Hz)
12-2829 (C)
12-2871 (C)
Figure 14. 7551 Transmit Gain and Return Loss vs.
Frequency
Figure 16. 7551 Typical VBAT Power Supply
Rejection
Lucent Technologies Inc.
17
AGERE [ AGERE SYSTEMS ]
