14. Two-Wire to Four-Wire (Metallic to VTX) Voltage Gain - The
參數(shù)資料
型號(hào)： HC5513BIM
廠商： Intersil
文件頁(yè)數(shù)： 8/20頁(yè)
文件大?。?/td> 0K
描述： IC SLIC DLC/FLC LP STDBY 22-DIP
標(biāo)準(zhǔn)包裝： 37
系列： UniSLIC14
功能： 用戶線路接口概念（SLIC）
電路數(shù)： 1
電流 - 電源： 2.25mA
功率（瓦特）： 1.5W
工作溫度： -40°C ~ 85°C
安裝類(lèi)型： 通孔
封裝/外殼： 22-DIP（0.400"，10.16mm）
供應(yīng)商設(shè)備封裝： 22-PDIP
包裝： 管件
包括： 接地鍵檢測(cè)器，可編程回路電流檢測(cè)器，振鈴?fù)禉z測(cè)器，熱關(guān)機(jī)
16
14. Two-Wire to Four-Wire (Metallic to VTX) Voltage Gain - The
2-wire to 4-wire (metallic to VTX) voltage gain is computed
using the following equation.
G2-4 = (VTX/VTR), EG = 0dBm0, VTX, VTR, and EG are defined
in Figure 7.
15. Current Gain RSN to Metallic - The current gain RSN to
Metallic is computed using the following equation:
K = IM [(RDC1 + RDC2)/(VRDC - VRSN)] K, IM, RDC1, RDC2,
VRDC and VRSN are defined in Figure 8.
16. Two-Wire to Four-Wire Frequency Response - The 2-wire to
4-wire
frequency
response
is
measured
with
respect
to
EG = 0dBm at 1.0kHz, ERX = 0V, IDCMET = 23mA. The frequency
response is computed using the following equation:
F2-4 = 20 log (VTX/VTR), vary frequency from 300Hz to
3.4kHz and compare to 1kHz reading.
VTX, VTR, and EG are defined in Figure 9.
17. Four-Wire to Two-Wire Frequency Response - The 4-wire to
2-wire
frequency
response
is
measured
with
respect
to
ERX = 0dBm at 1.0kHz, EG = 0V, IDCMET = 23mA. The frequency
response is computed using the following equation:
F4-2 = 20 log (VTR/ERX), vary frequency from 300Hz to
3.4kHz and compare to 1kHz reading.
VTR and ERX are defined in Figure 9.
18. Four-Wire to Four-Wire Frequency Response - The 4-wire to
4-wire
frequency
response
is
measured
with
respect
to
ERX = 0dBm at 1.0kHz, EG = 0V, IDCMET = 23mA. The frequency
response is computed using the following equation:
F4-4 = 20 log (VTX/ERX), vary frequency from 300Hz to
3.4kHz and compare to 1kHz reading.
VTX and ERX are defined in Figure 9.
19. Two-Wire to Four-Wire Insertion Loss - The 2-wire to 4-wire
insertion loss is measured with respect to EG = 0dBm at 1.0kHz
input signal, ERX = 0, IDCMET = 23mA and is computed using
the following equation:
L2-4 = 20 log (VTX/VTR)
where: VTX, VTR, and EG are defined in Figure 9. (Note: The
fuse resistors, RF, impact the insertion loss. The specified
insertion loss is for RF = 0).
20. Four-Wire to Two-Wire Insertion Loss - The 4-wire to 2-wire
insertion loss is measured based upon ERX = 0dBm, 1.0kHz
input signal, EG = 0, IDCMET = 23mA and is computed using
the following equation:
L4-2 = 20 log (VTR/ERX)
Where: VTR and ERX are defined in Figure 9.
21. Two-Wire to Four-Wire Gain Tracking - The 2-wire to 4-wire
gain tracking is referenced to measurements taken for
EG = -10dBm, 1.0kHz signal, ERX = 0, IDCMET = 23mA and is
computed using the following equation.
G2-4 = 20 log (VTX/VTR) vary amplitude -40dBm to +3dBm, or
-55dBm to -40dBm and compare to -10dBm reading.
VTX and VTR are defined in Figure 9.
22. Four-Wire to Two-Wire Gain Tracking - The 4-wire to 2-wire
gain
tracking
is
referenced
to
measurements
taken
for
ERX = -10dBm, 1.0kHz signal, EG = 0, IDCMET = 23mA and is
computed using the following equation:
G4-2 = 20 log (VTR/ERX) vary amplitude -40dBm to +3dBm, or
-55dBm to -40dBm and compare to -10dBm reading.
VTR and ERX are defined in Figure 9. The level is specified at the
4-wire receive port and referenced to a 600
impedance level.
23. Two-Wire Idle Channel Noise - The 2-wire idle channel noise
at VTR is specified with the 2-wire port terminated in 600 (RL)
and with the 4-wire receive port grounded (Reference Figure 10).
24. Four-Wire Idle Channel Noise - The 4-wire idle channel noise
at VTX is specified with the 2-wire port terminated in 600 (RL).
The noise specification is with respect to a 600
impedance
level at VTX. The 4-wire receive port is grounded (Reference
Figure 10).
25. Harmonic Distortion (2-Wire to 4-Wire) - The harmonic dis-
tortion is measured with the following conditions. EG = 0dBm at
1kHz, IDCMET = 23mA. Measurement taken at VTX. (Reference
Figure 7).
26. Harmonic Distortion (4-Wire to 2-Wire) - The harmonic dis-
tortion is measured with the following conditions. ERX = 0dBm0.
Vary frequency between 300Hz and 3.4kHz, IDCMET = 23mA.
Measurement taken at VTR. (Reference Figure 9).
27. Constant Loop Current - The constant loop current is calcu-
lated using the following equation:
IL = 2500 / (RDC1 + RDC2)
28. Standby State Loop Current - The standby state loop current
is calculated using the following equation:
IL = [|VBAT| - 3] / [RL +1800], TA = 25
oC
29. Ground Key Detector - (TRIGGER) Increase the input current
to 8mA and verify that DET goes low.
(RESET) Decrease the input current from 17mA to 3mA and
verify that DET goes high.
(Hysteresis) Compare difference between trigger and reset.
30. Power Supply Rejection Ratio - Inject a 100mVRMS signal
(50Hz to 4kHz) on VBAT, VCC and VEE supplies. PSRR is com-
puted using the following equation:
PSRR = 20
log (V
TX/VIN). VTX and VIN are defined in Figure 12.
Pin Descriptions
PDIP
SYMBOL
DESCRIPTION
7
BGND
Battery Ground - To be connected to zero potential. All loop current and longitudinal current flow from this ground.
Internally separate from AGND but it is recommended that it is connected to the same potential as AGND.
8
VCC
5V power supply.
9
RINGRLY
Ring relay driver output.
10
VBAT
Battery supply voltage, -24V to -56V.
11
RSG
Saturation guard programming resistor pin.
HC5513
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