参数资料
型号: 71M6513H-DB
厂商: Maxim Integrated Products
文件页数: 58/112页
文件大小: 0K
描述: BOARD DEMO 71M6513H ENERGY METER
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
主要目的: 电源管理,电度表/功率表
嵌入式:
已用 IC / 零件: 71M6513H
已供物品: 2 个板,线缆,CD,电源
71M6513/71M6513H Demo Board User’s Manual
2.4.6 OPTICAL INTERFACE
The 71M6513 IC is equipped with two pins supporting the optical interface: OPT_TX and OPT_RX. The
OPT_TX pin can be used to drive a visual or IR light LED with up to 20mA, a series resistor (R 2 in Figure 2-13)
helps limiting the current). The OPT_RX pin can be connected to the collector of a photo-transistor, as shown in
Figure 2-13.
3.3V
71M651X
OPT_RX
R 1
Phototransistor
3.3V
OPT_TX
R 2
LED
Figure 2-13: Optical Interface Block Diagram
On both the D6513T3B2 and D6513T3C1 Demo Boards, the current limiting resistor R79 is provided in between
the OPT_TX pin of the chip and pin 2 of J12 (Figure 2-14). C21 on the D6513T3B2 Demo Boards should be
shorted to create a DC path from the collector of the photo-transistor to the OPT_RX pin.
50mm (2")
71M6511/6513
OPT_TX
OPT_RX
R79
V3P3
V3P3
J12
OP233W
R1
OP804SL
R84
C21
R85
OP804SL
OP233W
GND
Demo Board
Figure 2-14: Optical Port Circuitry on the D6513T3B2 Demo Board
The IR diode should be connected between terminal 2 of header J12 on the Demo Board (cathode) and the
V3P3 voltage (anode), which is accessible at terminal 1 of header J12 (see Figure 3). The value of R79 may be
increased or decreased in order to vary the diode current. R84 and R85 (D6513T3B2 only) should be removed
when operating the photo-transistor in the configuration shown.
Page: 58 of 112
? 2005-2006 TERIDIAN Semiconductor Corporation
Revision 5.6
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