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PDF ADUM1420 Data sheet ( Hoja de datos )
| Número de pieza | ADUM1420 | |
| Descripción | Quad Isolated Precision Gate Driver | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Quad Isolated Precision
Gate Driver, 0.1 A Output
ADuM1420
FEATURES
Quad outputs isolated from input and each other
Input-to-output differential: ±700 V peak
Output-to-output differential: ±700 V peak
0.1 A peak output current
High frequency operation: 5 MHz maximum
High common-mode transient immunity: >75 kV/μs
High temperature operation: 105°C
Wide body, 28-lead SOIC
APPLICATIONS
Plasma display modules
GENERAL DESCRIPTION
The ADuM14201 is a quad isolated gate driver that employs
Analog Devices, Inc. iCoupler® technology to provide
independent and isolated high-side and low-side outputs.
In comparison to gate drivers employing high voltage level
translation methodologies, the ADuM1420 offers the benefit of
true, galvanic isolation between the input and each of the four
outputs. Each output can be operated up to ±700 V peak relative to
the input, thereby supporting low-side switching to negative
voltages. The differential voltage between any two outputs can
be as high as 700 V peak.
1 Protected by U.S. Patents 5,952,849; 6,291,907; and 7,075,329.
VOA 1
VDDA 2
GNDA 3
NC 4
NC 5
NC 6
GND1 7
VDD1 8
VIA 9
VIB 10
VIC 11
VID 12
ED DISABLE 13
GND1 14
FUNCTIONAL BLOCK DIAGRAM
ENCODE
ADuM1420
ENCODE
ENCODE
ERROR
DETECTION
ENCODE
ENCODE
ENCODE
ENCODE
ENCODE
NC = NO CONNECT
Figure 1.
28 VDDB
27 VOB
26 GNDB
25 NC
24 NC
23 GNDC
22 VDDC
21 VOC
20 GNDC
19 NC
18 NC
17 VDDD
16 VOD
15 GNDD
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2008 Analog Devices, Inc. All rights reserved.
1 page  
ADuM1420
PACKAGE CHARACTERISTICS
Table 2.
Parameter
Resistance (Input-to-Output)1
Capacitance (Input-to-Output)1
Input Capacitance
IC Junction-to-Ambient Thermal Resistance
IC Junction-to-Case Thermal Resistance
Moisture Sensitivity Level
Symbol
RI-O
CI-O
CI
θJA
θJC
Min Typ Max Unit Test Conditions
1012 Ω
2.0 pF f = 1 MHz
4.0 pF
54 °C/W
13 °C/W
3
1 The device is considered a 2-terminal device: Pin 1 through Pin 14 are shorted together, and Pin 15 through Pin 28 are shorted together.
REGULATORY INFORMATION
The ADuM1420 will be approved by the organization listed in Table 3.
Table 3.
UL1 (Pending)
Recognized under 1577 component recognition program, basic insulation, 1667 V rms isolation voltage.
1 In accordance with UL 1577, each ADuM1420 is proof tested by applying an insulation test voltage ≥ 2000 V rms for 1 second (current leakage detection limit = 5 μA).
INSULATION AND SAFETY-RELATED SPECIFICATIONS
Table 4.
Parameter
Rated Dielectric Insulation Voltage
Minimum External Air Gap (Clearance)
Minimum External Tracking (Creepage)
Minimum Internal Gap (Internal Clearance)
Tracking Resistance (Comparative Tracking Index)
Isolation Group
Symbol
L(I01)
L(I02)
CTI
Value
1667
2.1 min
2.1 min
0.017 min
>175
IIIa
Unit
V rms
mm
mm
mm
V
Conditions
1-minute duration
Measured from input terminals to output terminals B-D,
shortest distance through air
Measured from input terminals to output terminals B-D,
shortest distance path along body
Insulation distance through insulation
DIN IEC 112/VDE 0303 Part 1
Material Group (DIN VDE 0110, 1/89, Table 1)
RECOMMENDED OPERATING CONDITIONS
Table 5.
Parameter
Operating Temperature
Input Supply Voltage1
Output Supply Voltages1
Input Signal Rise and Fall Times
Common-Mode Transient Immunity, Input to Output2
Common-Mode Transient Immunity, Between Outputs2
Transient Immunity, Supply Voltages2
1 All voltages are relative to their respective ground.
2 See the Common-Mode Transient Immunity section for additional data.
Symbol
TA
VDD1
VDDA, VDDB
Min Max
−40 +105
4.5 5.5
12 18
100
−75 +75
−75 +75
−75 +75
Unit
°C
V
V
ns
kV/μs
kV/μs
kV/μs
Rev. A | Page 4 of 12
5 Page 
ADuM1420
POWER-UP/POWER-DOWN CONSIDERATIONS
Given that the ADuM1420 has separate supplies on either side
of the isolation barrier for each channel, the power-up/power-
down characteristics relative to each supply voltage need to be
considered individually.
As shown in Table 7, when VDD1 input power is off, the ADuM1420
outputs take on a default low logic state. As the VDD1 supply is
increased/decreased, the output of each channel transitions
from/to a logic low to/from the state matching its respective
input (see Figure 13 and Figure 14).
OUTPUT
DATA
2.5
(TYP)
VDD1
Figure 13. VDD1 Power-Up/Power-Down Characteristics, Input Data = High
When VDD1 crosses the threshold for activating the refresh
function (approximately 2.5 V), there can be a delay of up to
2 μs before the output is updated to the correct state, depending
on the timing of the next refresh pulse. When VDD1 is reduced
from an on state to below the 2.0 V threshold, there can be a
delay of up to 5 μs before the output takes on its default low state.
In addition, during power-up/power-down, there is a range of
VDD1 values within which erroneous outputs can occur if the
input data either is a logic high or is in transition between logic
states. This range is between 2.5 V and 2.7 V. The recommended
practice is to set all the input logic levels to low during power-up/
power-down.
VDD1
OUTPUT DATA
Figure 14. VDD1 Power-Up/Power-Down Characteristics, Input Data = Low
Rev. A | Page 10 of 12
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet ADUM1420.PDF ] | |
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