参数资料
型号: 73M1822-KEYCHN
厂商: Maxim Integrated Products
文件页数: 15/82页
文件大小: 0K
描述: BOARD KEYCHAIN 73M1822 42-QFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
主要目的: *
嵌入式: *
已用 IC / 零件: *
主要属性: *
次要属性: *
已供物品: 板,CD
73M1822/73M1922 Data Sheet
DS_1x22_001
22
Rev. 1.6
3.5
73M1x22 Line-Side Electrical Specifications (73M1912)
Table 14 lists the absolute maximum ratings for the line side. Operation outside these rating limits may
cause permanent damage to this device.
Table 14: Line-Side Absolute Maximum Ratings
Parameter
Min
Max
Unit
Pin input voltage from VPX to VNX
-0.5
6.0
V
Pin input voltage (all other pins) to VNS
-0.5
4.0
V
3.6
Reference and Regulation
Table 15 lists the VBG specifications. VBG should be connected to an external bypass capacitor with a
minimum value of 0.1μF. This pin is not intended for any other external use.
The following conditions apply: VPX=5 V; Barrier Powered Mode; Barrier Data Rate across the Barrier=1.5
Mbps; VBG connected to 0.1
μF external cap.
Table 15: VBG Specifications
Parameter
Test Condition
Min
Nom
Max
Units
VBG
See conditions above.
1.19
V
VBG Noise
300 Hz – 3.3 kHz
-86*
-80
dBm600
VBG PSRR
300 Hz – 30 kHz
40
dB
VPS
VPX=5.5 V
3.15
V
VPS PSRR
VPX=4.5 V to 5.5 V
40
dB
3.7
AC Signal Levels
Table 16 shows the maximum transmit levels that the 73M1912 Line-Side Device is capable of delivering.
Table 16: Maximum Transmit Levels
Transmit Type
Maximum
Level at the
Line (dBm)
Peak to
RMS
Ratio
RMS Voltage
on the Line
(V)
Peak
Voltage on
the Line (V)
V.90
-12.0
4
0.195
0.778
QAM
-7.3
2.31
0.334
0.772
DPSK
-5.1
1.81
0.431
0.779
FSK
-3.0
1.41
0.548
0.775
DTMF (high tone)
-7.8
1.41
0.316
0.446
DTMF (low tone)
-9.8
1.41
0.251
0.354
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