
5
INSERTION LOSS
2-Wire to 4-Wire
0dBm, 1kHz (Note 19, Figure 9)
-0.2
-
0.2
dB
4-Wire to 2-Wire
0dBm, 1kHz (Note 20, Figure 9)
-0.2
-
0.2
dB
GAIN TRACKING (Ref = -10dBm, at 1.0kHz)
2-Wire to 4-Wire
-40dBm to +3dBm (Note 21, Figure 9)
-0.1
-
0.1
dB
2-Wire to 4-Wire
-55dBm to -40dBm (Note 21, Figure 9)
-
±0.03
-
dB
4-Wire to 2-Wire
-40dBm to +3dBm (Note 22, Figure 9)
-0.1
-
0.1
dB
4-Wire to 2-Wire
-55dBm to -40dBm (Note 22, Figure 9)
-
±0.03
-
dB
FIGURE 8. CURRENT GAIN-RSN TO METALLIC
FIGURE 9. FREQUENCY RESPONSE, INSERTION LOSS,
GAIN TRACKING AND HARMONIC
DISTORTION
NOISE
Idle Channel Noise at 2-Wire
C-Message Weighting (Note 23,
Figure 10)
-
12
-
dBrnC
Idle Channel Noise at 4-Wire
C-Message Weighting (Note 24,
Figure 10)
-
12
-
dBrnC
HARMONIC DISTORTION
2-Wire to 4-Wire
0dBm, 1kHz (Note 25, Figure 7)
-
-65
-54
dB
4-Wire to 2-Wire
0dBm, 0.3kHz to 3.4kHz (Note 26,
Figure 9)
-
-65
-54
dB
BATTERY FEED CHARACTERISTICS
Constant Loop Current Tolerance
RDCX = 41.2k
IL = 2500/(RDC1 + RDC2),
-40oC to 85oC (Note 27)
0.9IL
IL
1.1IL
mA
Loop Current Tolerance (Standby)
IL = (VBAT-3)/(RL +1800),
-40oC to 85oC (Note 28)
0.8IL
IL
1.2IL
mA
Open Circuit Voltage (VTIP - VRING)
-40oC to 85oC, (Active)
14
-
20
V
Electrical Specifications
TA = -40
oC to 85oC, V
CC = 5V ±5%, VEE = -5V ±5%, VBAT = -28V, AGND = BGND = 0V, RDC1 = RDC2 =
41.2k
, RD = 39k, RSG = ∞, RF1 = RF2 = 0, CHP = 10nF, CDC = 1.5F, ZL = 600. (Continued)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
RDC2
41.2k
RDC1
41.2k
CDC
1.5
F
RL
600
TIP
5
RING
6
RDC
17
RSN
19
RRX
300k
VRSN = 0V
VRSN = -3V
GRX = ((VTR1- VTR2)(300k))/(-3)(600)
Where: VTR1 is the Tip to Ring Voltage with VRSN = 0V
VTR
and VTR2 is the Tip to Ring Voltage with VRSN = -3V
RT
RRX
IDCMET
600k
300k
C
1/
ωC << RL
EG
RL
VTX
600
VTR
ERX
TIP
5
VTX
21
RING
6
RSN
19
HC5513