參數(shù)資料
型號(hào)： ADUM6404ARWZ
廠商： ANALOG DEVICES INC
元件分類(lèi)： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PDSO16
封裝： ROHS COMPLIANT, MS-013AA, SOIC-16
文件頁(yè)數(shù)： 14/24頁(yè)
文件大?。?/td> 440K
代理商： ADUM6404ARWZ
ADuM6400/ADuM6401/ADuM6402/ADuM6403/ADuM6404
Rev. 0 | Page 21 of 24
The preceding magnetic flux density values correspond
to specific current magnitudes at given distances from the
ADuM640x transformers. Figure 28 expresses these allowable
current magnitudes as a function of frequency for selected
distances. As shown in Figure 28, the ADuM640x are extremely
immune and can be affected only by extremely large currents
operated at high frequency very close to the component. For
the 1 MHz example, a 0.5 kA current placed 5 mm away from
the ADuM640x is required to affect component operation.
MAGNETIC FIELD FREQUENCY (Hz)
M
AX
IM
UM
A
L
O
W
ABL
E
CURR
E
NT
(
k
A)
1k
100
10
1
0.1
0.01
1k
10k
100M
100k
1M
10M
DISTANCE = 5mm
DISTANCE = 1m
DISTANCE = 100mm
08
14
1-
0
28
Figure 28. Maximum Allowable Current for
Various Current-to-ADuM640x Spacings
Note that, in combinations of strong magnetic field and high
frequency, any loops formed by PCB traces can induce error
voltages sufficiently large to trigger the thresholds of succeeding
circuitry. Exercise care in the layout of such traces to avoid this
possibility.
POWER CONSUMPTION
The VDD1 power supply input provides power to the iCoupler
data channels, as well as to the power converter. For this reason,
the quiescent currents drawn by the data converter and the
primary and secondary I/O channels cannot be determined
separately. All of these quiescent power demands have been
combined into the IDD1 (Q) current, as shown in Figure 29. The
total IDD1 supply current is equal to the sum of the quiescent
operating current; the dynamic current, IDD1 (D), demanded by
the I/O channels; and any external IISO load.
CONVERTER
PRIMARY
CONVERTER
SECONDARY
PRIMARY
DATA
INPUT/OUTPUT
4-CHANNEL
IDDP(D)
E
SECONDARY
DATA
INPUT/OUTPUT
4-CHANNEL
IISO(D)
IISO
IDD1(Q)
IDD1(D)
0
81
41
-02
9
Figure 29. Power Consumption Within the ADuM640x
Dynamic I/O current is consumed only when operating a channel
at speeds higher than the refresh rate of fr. The dynamic current
of each channel is determined by its data rate. Figure 21 shows the
current for a channel in the forward direction, meaning that the
input is on the VDD1 side of the part. Figure 22 shows the current
for a channel in the reverse direction, meaning that the input is on
the VISO side of the part. Both figures assume a typical 15 pF load.
The following relationship allows the total IDD1 current to be
calculated:
IDD1 = (IISO × VISO)/(E × VDD1) + Σ ICHn; n = 1 to 4
(1)
where:
IDD1 is the total supply input current.
ICHn is the current drawn by a single channel determined from
Figure 21 or Figure 22, depending on channel direction.
IISO is the current drawn by the secondary side external load.
E is the power supply efficiency at 100 mA load from Figure 13
at the VISO and VDD1 condition of interest.
The maximum external load can be calculated by subtracting
the dynamic output load from the maximum allowable load.
IISO (LOAD) = IISO (MAX) Σ IISO (D)n; n = 1 to 4
(2)
where:
IISO (LOAD) is the current available to supply an external secondary
side load.
IISO (MAX) is the maximum external secondary side load current
available at VISO.
IISO (D)n is the dynamic load current drawn from VISO by an input
or output channel, as shown in Figure 23 and Figure 24.
The preceding analysis assumes a 15 pF capacitive load on each
data output. If the capacitive load is larger than 15 pF, the additional
current must be included in the analysis of IDD1 and IISO (LOAD).
POWER CONSIDERATIONS
The ADuM640x power input, data input channels on the
primary side, and data channels on the secondary side are all
protected from premature operation by UVLO circuitry. Below
the minimum operating voltage, the power converter holds its
oscillator inactive and all input channel drivers and refresh
circuits are idle. Outputs remain in a high impedance state to
prevent transmission of undefined states during power-up and
power-down operations.
During application of power to VDD1, the primary side circuitry
is held idle until the UVLO preset voltage is reached. At that
time, the data channels initialize to their default low output
state until they receive data pulses from the secondary side.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADUM6404ARWZ 制造商:Analog Devices 功能描述:IC DIGITAL ISOLATOR 100NS WSOIC-16
ADUM6404ARWZ-RL 功能描述:IC ISOLATOR 4CH DCDC CONV 16SOIC RoHS:是 類(lèi)別:隔離器 >> 數(shù)字隔離器 系列:IsoPower®, iCoupler® 產(chǎn)品培訓(xùn)模塊:IsoLoop® Isolator 標(biāo)準(zhǔn)包裝:50 系列:IsoLoop® 輸入 - 1 側(cè)/2 側(cè):5/0 通道數(shù):5 電源電壓:3 V ~ 5.5 V 電壓 - 隔離:2500Vrms 數(shù)據(jù)速率:110Mbps 傳輸延遲:12ns 輸出類(lèi)型:CMOS 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:管件 工作溫度:-40°C ~ 85°C 其它名稱:390-1053-5
ADUM6404CRIZ 功能描述:隔離器接口集成電路 8mm creepage 4-Ch 5kV Dig Iso Int DC/DC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 傳播延遲時(shí)間: 電源電壓-最大:5.5 V 電源電壓-最小:3 V 電源電流:3.6 mA 功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:SOIC-8 封裝:Tube
ADUM6404CRIZ-RL 功能描述:隔離器接口集成電路 8mm creepage 4-Ch 5kV Dig Iso Int DC/DC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 傳播延遲時(shí)間: 電源電壓-最大:5.5 V 電源電壓-最小:3 V 電源電流:3.6 mA 功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:SOIC-8 封裝:Tube
ADUM6404CRWZ 功能描述:IC ISOLATOR 4CH DCDC CONV 16SOIC RoHS:是 類(lèi)別:隔離器 >> 數(shù)字隔離器 系列:IsoPower®, iCoupler® 標(biāo)準(zhǔn)包裝:66 系列:iCoupler® 輸入 - 1 側(cè)/2 側(cè):2/2 通道數(shù):4 電源電壓:3.3V，5V 電壓 - 隔離:2500Vrms 數(shù)據(jù)速率:25Mbps 傳輸延遲:60ns 輸出類(lèi)型:邏輯 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:20-SSOP 包裝:管件 工作溫度:-40°C ~ 105°C
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