参数资料
型号: 73M1922-DB
厂商: Maxim Integrated Products
文件页数: 2/82页
文件大小: 0K
描述: BOARD DEMO 73M1922 20-TSSOP
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
10
Rev. 1.6
2.2
73M1912 20-Pin TSSOP Pinout
Figure 3 shows the 73M1912 20-pin TSSOP pinout.
73M1912
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DCI
RGN
RGP
OFH
VND/VNX
SCP
MID
VPX
SRE
SRB
VBG
DCS
DCD
TXM
RXM
RXP
ACS
VNX/VNS
VPD/VPS
DCG
Figure 3: 73M1912 20-Pin TSSOP Pinout
Table 2 describes the pin functions for the device. Decoupling capacitors on the power supplies should be
included for each pair of supply pins.
Table 2: 73M1912 20-Pin TSSOP Pin Definitions
Pin
Number
Pin Name
Type
Description
1
DCI
I
DC loop input
2
RGN
I
Ring detect negative voltage input
3
RGP
I
Ring detect positive voltage input
4
OFH
O
Off-hook control
5
VND/VNX
GND
Digital/analog negative supply voltage
6
SCP
I/O
Positive side of the secondary pulse transformer winding
7
MID
I/O
Charge pump midpoint
8
VPX
PWR
Supply from the barrier, connect to VPD
9
SRE
I
Voltage regulator sense
10
SRB
O
Voltage regulator drive
11
VBG
O
VBG bypass, c
onnect to 0.1 μF capacitor to VNS
12
ACS
I
AC current sense
13
VNX/VNS
GND
Digital/analog negative supply voltage
14
VPD/VPS
PWR
Digital/analog positive supply voltage
15
RXP
I
Receive plus – signal input
16
RXM
I
Receive minus – signal input
17
TXM
O
Transmit minus – signal output
18
DCD
O
DC loop drive
19
DCS
I
DC loop current sense
20
DCG
O
DC loop drive
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