60
TIP IDLE VOLTAGE
Active, I
L
= 0
-
-4
-
V
Standby, I
L
= 0
-
<0
-
V
RING IDLE VOLTAGE
Active, I
L
= 0
-
-24
-
V
Standby, I
L
= 0
-
>-28
-
V
4-WIRE TRANSMIT PORT (V
TX
)
Overload Level
Z
L
> 20k
, 1% THD (Note 12, Figure 7)
3.1
-
-
V
PEAK
Output Offset Voltage
E
G
= 0, Z
L
=
∞
(Note 13, Figure 7)
-60
-
60
mV
Output Impedance (Guaranteed by Design)
0.2kHz < f < 03.4kHz
-
5
20
2- to 4-Wire (Metallic to V
TX
) Voltage Gain
0.3kHz < f < 03.4kHz (Note 14, Figure 7)
0.98
1.0
1.02
V/V
FIGURE 6. TWO-WIRE RETURN LOSS
FIGURE 7. OVERLOAD LEVEL (4-WIRE TRANSMIT PORT),
OUTPUT OFFSET VOLTAGE, 2-WIRE TO 4-WIRE
VOLTAGE GAIN AND HARMONIC DISTORTION
4-WIRE RECEIVE PORT (RSN)
DC Voltage
I
RSN
= 0mA
-
0
-
V
R
X
Sum Node Impedance (Guaranteed by
Design)
0.3kHz < f < 3.4kHz
-
-
20
Current Gain-RSN to Metallic
0.3kHz < f < 3.4kHz (Note 15, Figure 8)
980
1000
1020
Ratio
FREQUENCY RESPONSE (OFF-HOOK)
2-Wire to 4-Wire
0dBm at 1.0kHz, E
RX
= 0V,
0.3kHz < f < 3.4kHz (Note 16, Figure 9)
-0.2
-
0.2
dB
4-Wire to 2-Wire
0dBm at 1.0kHz, E
G
= 0V,
0.3kHz < f < 3.4kHz (Note 17, Figure 9)
-0.2
-
0.2
dB
4-Wire to 4-Wire
0dBm at 1.0kHz, E
G
= 0V,
0.3kHz < f < 3.4kHz (Note 18, Figure 9)
-0.2
-
0.2
dB
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
Electrical Specifications
T
A
= 0
o
C to 70
o
C, V
CC
= 5V
±
5%, V
EE
= -5V
±
5%, V
BAT
= -28V, AGND = BGND = 0V, R
DC1
= R
DC2
= 41.2k
,
R
D
= 39k
, R
SG
=
∞
, R
F1
= R
F2
= 0
, C
HP
= 10nF, C
DC
= 1.5
μ
F, Z
L
= 600
, Unless Otherwise Specified. All
pin number references in the figures refer to the 28 lead PLCC package.
(Continued)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
R
RX
V
S
300k
Z
D
R
LR
R
T
600k
R
R
Z
IN
V
M
TIP
27
V
TX
19
RING
28
RSN
16
R
T
600k
R
RX
I
DCMET
23mA
300k
C
E
G
R
L
600
V
TXO
V
TX
Z
L
V
TR
2.16
μ
F
TIP
27
V
TX
19
RING
28
RSN
16
HC5526