ELECTRICAL CHARACTERISTICS (continued)
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
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
0 dBm, 1 kHz
–40°C to +85°C
300 Hz to 3.4 kHz
(relative to 1 kHz):
0°C to +70°C
–40°C to +85°C
Gain tracking
+7 dBm to –55 dBm:
0°C to +70°C
–40°C to +85°C
Group delay
f = 1 kHz
–0.1
–0.15
5.3
+0.1
+0.15
µs
4
4
4
–0.1
–0.15
+0.1
+0.15
–0.15
–0.20
–1*
–1
–0.1
–0.15
+0.15
+0.20
+0.1
+0.15
dB
4
4
Variation with frequency
4
Total Harmonic Distortion (2- to 4-Wire or 4- to 2-Wire, See Test Circuits A and B)
Total harmonic distortion
Idle Channel Noise
C-message weighted noise
2-wire:
2-wire:
2-wire:
4-wire
4-wire
4-wire
Psophometric weighted noise
2-wire
2-wire
2-wire
4-wire
4-wire
4-wire
0°C to +70°C
0°C to +70°C
–40°C to +85°C
0°C to +70°C
0°C to +70°C
–40°C to +85°C
0°C to +70°C
0°C to +70°C
–40°C to +85°C
0°C to +70°C
0°C to +70°C
–40°C to +85°C
–1*
+7
+7
+7
+7
+7
+7
–83
–83
–83
–83
–83
–83
+15
+12
+15
+15
+12
+15
–75
–78
–75
–75
–78
–75
4
dBrnC
4
dBmp
4
4
0 dBm, 300 Hz to 3.4 kHz
+9 dBm, 300 Hz to 3.4 kHz
–64
–55
–50
–40
dB
–1*
–1*
–1*
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
1 kHz to 15 kHz
Above 15 kHz
256 kHz and harmonics
–76
–76
–57
–70
–85
–57
4, 5, 9
4, 5, 9
4
4, 5, 9
Longitudinal
dBm
DC Feed Currents (See Figure 1) BAT = –48 V
Active state loop-current accuracy
OHT state
Tip Open state
Open Circuit state
Fault current limit, I
L
LIM (I
AX
+ I
BX
)
I
LOOP
(nominal) = 40 mA
R
L
= 600
Ω
R
L
= 600
Ω
R
L
= 0
Ω
A and B shorted to GND
–7.5
18
20
+7.5
22
1.0
1.0
130
mA
%
SLIC Products
7
AMD [ ADVANCED MICRO DEVICES ]
