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參數(shù)資料
| 型號： | AD5757ACPZ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | SERIAL INPUT LOADING, 15 us SETTLING TIME, 16-BIT DAC, QCC64 |
| 封裝： | 9 X 9 MM, ROHS COMPLIANT, MO-220VMMD-4, LFCSP-64 |
| 文件頁數(shù)： | 36/44頁 |
| 文件大?。?/td> | 1122K |
| 代理商： | AD5757ACPZ |
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AD5757
Rev. A | Page 41 of 44
DC-to-DC Converters
GALVANICALLY ISOLATED INTERFACE
To achieve high efficiency, good regulation, and stability, a well-
designed printed circuit board layout is required.
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.
Isocouplers provide voltage isolation in excess of 2.5 kV. The
serial loading structure of the AD5757 makes it ideal for
isolated interfaces because the number of interface lines is kept
to a minimum. Figure 65 shows a 4-channel isolated interface to
the AD5757 using an ADuM1400. For more information, visit
Follow these guidelines when designing printed circuit boards
(see Figure 56):
Keep the low ESR input capacitor, CIN, close to AVCC
and PGND.
Keep the high current path from CIN through the inductor,
LDCDC, to SWX and PGND as short as possible.
Keep the high current path from CIN through LDCDC and the
rectifier, DDCDC, to the output capacitor, CDCDC, as short as
possible.
VIA
SERIAL CLOCK
OUT
TO SCLK
VOA
ENCODE
DECODE
Keep high current traces as short and as wide as possible.
The path from CIN through the inductor, LDCDC, to SWX and
PGND should be able to handle a minimum of 1 A.
VIB
SERIAL DATA
OUT
TO SDIN
VOB
ENCODE
DECODE
VOC
VIC
SYNC OUT
Place the compensation components as close as possible to
COMPDCDC_x.
ENCODE
DECODE
Avoid routing high impedance traces near any node
connected to SWx or near the inductor to prevent radiated
noise injection.
VID
CONTROL OUT
VOD
ENCODE
DECODE
MICROCONTROLLER
ADuM1400*
*ADDITIONAL PINS OMITTED FOR CLARITY.
TO SYNC
TO LDAC
092
25-
0
81
Figure 65. Isolated Interface
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD5757ACPZ-REEL7 | 功能描述:IC DAC 16BIT QUAD IOUT 64LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Data Converter Fundamentals DAC Architectures 標(biāo)準(zhǔn)包裝:750 系列:- 設(shè)置時(shí)間:7µs 位數(shù):16 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:雙 ± 功率耗散（最大）:100mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-LCC（J 形引線） 供應(yīng)商設(shè)備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
| AD5757X | 制造商:AD 制造商全稱:Analog Devices 功能描述:Quad Channel, 16-Bit, Serial Input, 4-20mA Output DAC, Dynamic Power Control, HART Connectivity |
| AD575JD | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog-to-Digital Converter， 10-Bit |
| AD575JN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog-to-Digital Converter， 10-Bit |
| AD575KD | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog-to-Digital Converter， 10-Bit |
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