L8576B 데이터 시트보기 (PDF) - Agere -> LSI Corporation
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L8576B Datasheet PDF : 26 Pages
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L8576B Dual Ringing SLIC
Data Sheet
May 2001
Electrical Characteristics
Generally, minimum and maximum values are testing requirements. However, some parameters may not be tested
in production because they are guaranteed by design and device characterization. Typical values reflect the design
center or nominal value of the parameter; they are for information only and are not a requirement. Minimum and
maximum values apply across the entire temperature range (0 °C to 70 °C) and entire battery range (to –72 V).
Unless otherwise specified, typical values are defined as 20 °C, VCC = 5.0 V, VBAT = –68.5 V. Positive currents flow
into the device.
Table 3. Operating Conditions and Powering
Parameter
Temperature Range
Humidity Range
Supply Voltages:
VCC
VBAT
Loop Closure Threshold—Detection Range
ac Termination Impedance Programming Range
On- and Off-hook 2-wire Signal Level
Power Supply—Powerup, No Loop Current (per section):
ICC
IBAT (VBAT = –65 V)
Total power (one channel, VBAT = –65 V)
Power-supply Rejection (See Figures 6 and 7.):
VCC (1 kHz)
VBAT (500 Hz—3 kHz)
Thermal4:
Thermal Resistance (still air) Tj
Operating Tj
Thermal Shutdown Temperature
Min
0
5
4.75
–242
9.5
300
—
—
—
—
35
45
—
—
—
1. Noncondensing.
2. The L8576B will operate below –24 V; –24 V is used for production test.
3. The termination impedance can be programmed up to 1200 Ω; 1000 Ω are used for production test.
4. This parameter is not tested in production. It is guaranteed by design and device characterization.
Typ
—
—
5.0
–65
12
600
3.14
4.5
3.0
230
—
—
47
—
160
Max
70
951
5.25
–72
14.5
10003
—
5.5
4.0
290
—
—
—
150
—
Unit
°C
%RH
V
V
mA
Ω
dBm
mA
mA
mW
dB
dB
°C/W
°C
°C
Table 4. Ring Trip Detector1
Parameter2
Min Typ Max
Ringing Source:
Frequency (ƒ) RRNG = 28.7 kΩ, RTTH = 52.3 kΩ
Frequency (ƒ) Contact Agere for Specific Component Values
17 20 23
20 — 50
C-message Weighted Noise (900 Ω)
— — 90
REN Load (1386 Ω + 40 µF) with Loop Resistance = 30 Ω, RPT = 30 Ω, RPR = 30 Ω — — 40
Detection Interval:
20 Hz
— — 200
≥25 Hz
— — 150
1. This table is provided for information purposes only.
2. These parameters are not tested in production.
Unit
Hz
Hz
dBrnC
Vrms
ms
ms
10
Agere Systems Inc.
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