PBL 3764A/4, /6
Ref
fig
Parameter
Conditions
Min
Typ
40
60
Max
70
Unit
Power dissipation (VBat = -48V)
P1
Open circuit state, C1, C2 = 0, 0
Stand-by state,
C1, C2 = 1, 1; on-hook
Active state, C1, C2 = 0, 1
On-hook, RL = ∞ Ω
mW
mW
P2
85
P3
P4
200
1.1
300
1.4
mW
W
Off-hook, RL = 600 Ω
Power supply currents
V
V
V
CC current, ICC
EE current, IEE
Bat current, IBat
Open circuit state
C1, C2 = 0, 0
On-hook
Stand-by state
C1, C2 = 1, 1
On-hook
Active state
C1, C2 = 0,1
On-hook
1.7
1.0
0.5
2.1
1.0
0.9
5.1
2.0
3.3
2.8
2.0
1.2
3.5
2.0
1.6
9.5
4.0
5.2
mA
mA
mA
mA
mA
mA
mA
mA
mA
VCC current, ICC
VEE current, IEE
VBat current, IBat
VCC current, ICC
VEE current, IEE
VBat current, IBat
Power supply rejection ratios
VCC to 2- or 4-wire port
VEE to 2- or 4-wire port
VBat to 2- or 4-wire port
VBat to 2- or 4-wire port
Active State
C1, C2 = 0,1
50Hz < f< 3400Hz, Vn = 100mVRMS
Vn= 2 Vpp, Note 11
43
40
40
40
45
45
45
45
dB
dB
dB
dB
Temperture guard
Junction threshold temperature, TJG
150
13
°C
Thermal resistance
28-pin PLCC, θRJP28plcc
Junction to terminals 3, 6, 10, 17, 24
connected together, Note 12
°C/W
°C/W
22-pin PDIP, θRJP22dip
13,5
Notes
1. The overload level is specified at the two-wire port with the 6. The two-wire idle noise is specified with the port terminated
signal source at the four-wire receive port.
2. The two-wire impedance is programmable by selection of
external component values according to:
ZTRX = ZT/|G2-4 • αRSN| where:
in 600 Ω (RL) and with the four-wire receive port grounded
(ERX = 0; see figure 5).
The four-wire idle noise at VTX is specified with the two-wire
port terminated in 600 Ω (RL). The noise specification is with
respect to a 600 Ω impedance level at VTX. The four-wire
receive port is grounded (ERX = 0).
ZTRX = impedance between the TIPX and RINGX terminals
ZT = programming network between the VTX and RSN
terminals
7. The level is specified at the two-wire port.
G2-4 = transmit gain, nominally = 1
8. The level is specified at the four-wire receive port and
αSRN = receive current gain, nominally = -1000 (current
defined as positive when flowing into the receive
summing node (RSN), and when flowing from Tip
to Ring).
referenced to a 600 Ω impedance level.
9. Higher return loss values can be achieved by adding a
reactive component to RT, the two-wire terminating
impedance programming resistance, e.g., by dividing RT into
two equal halves and connecting a capacitor from the
common point to ground. For RT = 600 kΩ this capacitor
would be approximately 30 pF. Increasing CHP to 0.033 µF
improves low-frequency return loss.
3. The overload level is specified at the four-wire transmit
port, VTX, with the signal source at the two-wire port. Note
that the gain from the two-wire port to the four-wire transmit
port is G2-4 = 1.
4. Fuse resistors RF impact the insertion loss as explained in
the text, section Transmission. The specified insertion loss
is for RF = 0.
10. The -40°C - +85°C values are tested, while the 0°C - +70°C
values are given as an indication.
11. PSRR for VBat is reduced to min. 37 dB when the PLCC
package is used.
5. The specified insertion loss tolerance does not include
errors caused by external components.
12. Junction to ambient thermal resistance will be dependent on
external thermal resistance from VBat terminals to ambient.
7
ERICSSON [ ERICSSON ]
