參數(shù)資料
型號: IDT821621
廠商: Integrated Device Technology, Inc.
英文描述: LONG HAUL SLIC
中文描述: 長距離用戶接口
文件頁數(shù): 13/21頁
文件大小: 322K
代理商: IDT821621
AC Electrical Characteristics
11
October 8, 2003
IDT821621
AC ELECTRICAL CHARACTERISTICS
Unless otherwise stated, test conditions are VBAT = -52 V, VCC = +5 V, R
L
= 600
, R
DC1
= R
DC2
= 27.17 k
, R
TMG
= 2350
, R
D
= 35.4 k
, no
fuse resistors, C
HP
= 0.22
μ
F, C
DC
= 0.1
μ
F, C
CAS
= 0.33
μ
F, D1 = 1N400x, 2-wire AC input impedance is a 600
resistance synthesized by the
programming network as shown below.
LONG HAUL SLIC
Figure 6 Two-Wire AC Input Impedance Programming Network
Table 5 — Transmission Performance
Description
Test Conditions (See
Figure 7
)
Min.
Typ.
Max.
Unit
Note
2-wire Return Loss
200 Hz to 3.4 kHz
26
dB
Analog Output VTX Impedance
3
20
Analog Output VTX Offset Voltage
-50
+50
mV
Overload Level, 2-wire and 4-wire
Active state
2.5
Vpk
Overload Level
On-hook, R
LAC
= 600
0.77
Vrms
THD, Total Harmonic Distortion
0 dBm
-64
-50
dB
+7 dBm
-55
-40
THD, On-hook
0 dBm, R
LAC
= 600
-36
Table 6 — Longitudinal Capability
Description
Test Conditions (See
Figure 8
,
Figure 9
)
Min.
Typ.
Max.
Unit
Note
Longitudinal to metallic L-T, L-4 balance
200 Hz to 1 kHz
0 to 70 °C
-40 to +85 °C
63
58
dB
1 kHz to 3.4 kHz
0 to 70 °C
-40 to +85 °C
58
53
Longitudinal Signal Generation 4-L
200 Hz to 3.4 kHz
40
Longitudinal Current per pin
Active state
20
27
35
mArms
Longitudinal Impedance at A or B
0 to 100 H
Z
25
/pin
VTX
RSN
R
T1
= 75 k
R
T2
= 75 k
C
T1
= 120 pF
R
RX
= 150 k
V
RX
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