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SLIC Products
7
Balance Return Signal (4- to 4-Wire, See Test Circuit B)
Gain accuracy
0 dBm, 1 kHz,
0
°C to +70°C
0 dBm, 1 kHz, –40
°C to +85°C
0 dBm, 1 kHz,
0
°C to +70°C
–1*
0 dBm, 1 kHz, –40
°C to +85°C
–1
–6.00
–6.05
–5.95
–6.00
–5.85
–5.85
–5.85
–5.85
–5.75
–5.65
–5.75
–5.70
dB
3
3, 4
3
3, 4
Variation with frequency
300 Hz to 3400 Hz
Relative to 1 kHz
0
°C to +70°C
–40
°C to +85°C
–0.1
–0.15
+0.1
+0.15
—
—
3, 4
3, 4
Gain tracking
+7 dBm to –55 dBm, ref 0 dBm
0
°C to +70°C
–40
°C to +85°C
–0.1
–0.15
+0.1
+0.15
—
4
4
Group delay
f = 1 kHz
5.3
µs
4, 15
Total Harmonic Distortion (2- to 4-Wire or 4- to 2-Wire, See Test Circuits A and B)
Total harmonic distortion
0 dBm, 300 Hz to 3.4 kHz
+9 dBm, 300 Hz to 3.4 kHz
–64
–55
–50
–40
dB
Total harmonic distortion
with metering
–35
4, 11
Idle Channel Noise
C-message weighted noise
2-wire, 0
°C to +70°C
2-wire, 0
°C to +70°C
–1*
2-wire, –40
°C to +85°C
+7
+7
+7
+15
+12
+15
dBrnC
4
4-wire, 0
°C to +70°C
4-wire, 0
°C to +70°C
–1*
4-wire, –40
°C to +85°C
+7
+7
+7
+15
+12
+15
Psophometric weighted noise
2-wire, 0
°C to +70°C
2-wire, 0
°C to +70°C
–1*
2-wire, –40
°C to +85°C
–83
–83
–83
–75
–78
–75
dBmp
7
7
4, 7
4-wire, 0
°C to +70°C
4-wire, 0
°C to +70°C
–1*
4-wire, –40
°C to +85°C
–83
–83
–83
–75
–78
–75
7
7
4, 7
Single Frequency Out-of-Band Noise (See Test Circuit E)
Metallic
4 kHz to 9 kHz
9 kHz to 1 MHz
256 kHz and harmonics
–76
–76
–57
dBm
4, 5, 9
4, 5, 9
4, 5
Longitudinal
1 kHz to 15 kHz
Above 15 kHz
256 kHz and harmonics
–70
–85
–57
4, 5, 9
4, 5, 9
4, 5
Line Characteristics (See Figure 1) BAT = –48 V, RL = 600 Ω and 900 Ω, RFEED = 800 Ω
Apparent battery voltage
Active state
47
50
53
V
Loop-current accuracy
Active state
–7.5
+7.5
%
Loop current—Tip Open state
RL = 600 Ω
1.0
Loop current—Open Circuit state RL = 0 Ω
1.0
Loop-current limit accuracy
OHT state
Active state
–20
+20
10
Fault current limit, ILLIM
(IAX + IBX)
A and B shorted to GND
130
mA
ELECTRICAL CHARACTERISTICS
(continued)
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note