參數(shù)資料
型號(hào): EVAL-AD5750EBZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 26/36頁(yè)
文件大?。?/td> 0K
描述: BOARD EVAL FOR AD5750
標(biāo)準(zhǔn)包裝: 1
主要目的: 電源管理,專用:電流/電壓輸出驅(qū)動(dòng)器
已用 IC / 零件: AD5750
主要屬性: 電流(±20mA)或電壓(±10V)輸出模式
次要屬性: ±12 V ~ 24 V 電源電壓
已供物品:
AD5750/AD5750-1
Rev. C | Page 32 of 36
GALVANICALLY ISOLATED INTERFACE
In many process control applications, it is necessary to provide
an isolation barrier between the controller and the unit being
controlled to protect and isolate the controlling circuitry from any
hazardous common-mode voltages that may occur. The iCoupler
family of products from Analog Devices, Inc., provides voltage
isolation in excess of 5.0 kV. The serial loading structure of the
AD5750/AD5750-1 makes it ideal for isolated interfaces because
the number of interface lines is kept to a minimum. Figure 58
shows a 4-channel isolated interface using an ADuM1400. For
further information, visit www.analog.com/icouplers.
DE
C
O
DE
EN
CO
D
E
VIA
VOA
TO
SCLK
VIB
VOB
TO
SDIN
VIC
VOC
TO
SYNC
VID
VOD
TO
CLEAR
SERIAL
CLOCK OUT
SERIAL
DATA OUT
SYNC OUT
CONTROL OUT
CONTROLLER
ADuM14001
1ADDITIONAL PINS OMITTED FOR CLARITY.
D
E
CO
DE
E
NCO
DE
CO
DE
E
N
CO
DE
D
E
CO
DE
E
NCO
DE
07
268-
05
2
Figure 58. Isolated Interface
MICROPROCESSOR INTERFACING
Microprocessor interfacing to the AD5750/AD5750-1 is via a
serial bus that uses a protocol compatible with microcontrollers
and DSP processors. The communication channel is a 3-wire
(minimum) interface consisting of a clock signal, a data signal,
and a SYNC signal. The AD5750/AD5750-1 require a 16-bit
data-word with data valid on the falling edge of SCLK.
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