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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/s High temperature operation: 105C Wide body, 28-lead SOIC
GENERAL DESCRIPTION
The ADUM1420 1 is a quad isolated gate driver that employs Analog Devices, Inc. iCoupler(R) 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
APPLICATIONS
Plasma display modules
Protected by U.S. Patents 5,952,849; 6,291,907; and 7,075,329. Other patents pending.
FUNCTIONAL BLOCK DIAGRAM
VOA 1 VDDA 2 GNDA 3 NC 4 NC 5 NC
6
ENCODE ENCODE
28 27 26 25 24 23 22
VDDB VOB GNDB NC NC GNDC VDDC VOC GNDC NC NC VDDD VOD
06863-001
ADUM1420
GND1 7 VDD1 8 VIA 9 VIB 10 VIC 11 VID 12 ED DISABLE 13 GND1 14 NC = NO CONNECT ENCODE ENCODE ENCODE ERROR DETECTION ENCODE ENCODE ENCODE
21 20 19 18 17 16 15
GNDD
Figure 1.
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. Trademarks and registered trademarks are the property of their respective owners.
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 (c)2008 Analog Devices, Inc. All rights reserved.
ADUM1420 TABLE OF CONTENTS
Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Electrical Characteristics............................................................. 3 Package Characteristics ............................................................... 4 Regulatory Information............................................................... 4 Insulation and Safety-Related Specifications............................ 4 Recommended Operating Conditions .......................................4 Absolute Maximum Ratings ............................................................5 ESD Caution...................................................................................5 Pin Configuration and Function Descriptions..............................7 Typical Performance Characteristics ..............................................8 Application Information...................................................................9 Common-Mode Transient Immunity ........................................9 Power-Up/Power-Down Considerations ................................ 10 Outline Dimensions ....................................................................... 11 Ordering Guide .......................................................................... 11
REVISION HISTORY
2/08--Revision A: Initial Version
Rev. A | Page 2 of 12
ADUM1420 SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
All voltages are relative to their respective ground. 4.5 V VDD1 5.5 V, 12 V VDDA 18 V, 12 V VDDB 18 V, 12 V VDDC 18 V, 12 V VDDD 18 V. All minimum/maximum specifications apply over the entire recommended operating range, unless otherwise noted. All typical specifications are at TA = 25C, VDD1 = 5 V, VDDA = 15 V, VDDB = 15 V. Table 1.
Parameter DC SPECIFICATIONS Input Supply Current, Quiescent Output Supply Current (A, B, C, or D), Quiescent Input Supply Current, 10 Mbps Output Supply Current (A, B, C, or D), 10 Mbps Input Currents Logic High Input Threshold Logic Low Input Threshold Logic High Output Voltages Symbol IDDI (Q) IDDA (Q), IDDB (Q), IDDC (Q), IDDD (Q) IDDI (10) IDDA (10), IDDB (10), IDDC (10), IDDD (10) IIA, IIB, IIC, IID, IDISABLE VIH VIL VOAH, VOBH, VOCH, VODH Min Typ 5.1 0.3 12 16 -10 2.0 0.8 VDDA - 0.1, VDDB - 0.1, VDDC - 0.1, VDDD - 0.1 VDDA, VDDB, VDDC, VDDD +0.01 Max 8.0 1.2 16 22 +10 Unit mA mA mA mA A V V V Test Conditions
CL = 200 pF 0 V VIA, VIB, VIC, VID, VDISABLE VDD1
IOA, IOB, IOC, IOD = -1 mA
Logic Low Output Voltages Output Short-Circuit Pulsed Current 1 SWITCHING SPECIFICATIONS Minimum Pulse Width 2 Maximum Switching Frequency 3 Propagation Delay 4 Change vs. Temperature Pulse Width Distortion, |tPLH - tPHL| Channel-to-Channel Matching, Rising vs. Rising Edges 5 Channel-to-Channel Matching, Falling vs. Falling Edges5 Channel-to-Channel Matching, Rising vs. Falling Edges 6 Part-to-Part Matching, Rising or Falling Edges 7 Part-to-Part Matching, Rising vs. Falling Edges 8 Output Rise/Fall Time (10% to 90%)
1 2 3
VOAL, VOBL, VOCL, VODL IOA (SC), IOB (SC), IOC (SC), IOD (SC) PW tPHL, tPLH PWD
0.1 100
V mA
IOA, IOB, IOC, IOD = 1 mA
100 5 99 110 85 128 8 5 9 13 10 18
ns Mbps ns ps/C ns ns ns ns ns ns ns
CL = 200 pF, ED DISABLE = 0 CL = 200 pF, ED DISABLE = 0 CL = 200 pF, ED DISABLE = 0 CL = 200 pF, ED DISABLE = 0 CL = 200 pF, ED DISABLE = 0 CL = 200 pF, ED DISABLE = 0 CL = 200 pF, ED DISABLE = 0 CL = 200 pF, ED DISABLE = 0 CL = 200 pF, ED DISABLE = 0, input tR = 3 ns CL = 200 pF, ED DISABLE = 0, input tR = 3 ns CL = 200 pF, ED DISABLE = 0
tR/tF
25
Short-circuit duration of less than 1 second. Average power must conform to the limit shown under the Absolute Maximum Ratings. The minimum pulse width is the shortest pulse width at which the specified timing parameters are guaranteed. The maximum switching frequency is the maximum signal frequency at which the specified timing parameters are guaranteed. 4 tPHL propagation delay is measured from the 50% level of the falling edge of the VIx signal to the 50% level of the falling edge of the VOx signal. tPLH propagation delay is measured from the 50% level of the rising edge of the VIx signal to the 50% level of the rising edge of the VOx signal. 5 Channel-to-channel matching, rising, or falling edges is the magnitude of the propagation delay difference between any two channels of the same part when the inputs are either both rising or falling edges. The supply voltages and the loads on each channel are equal. 6 Channel-to-channel matching, rising vs. falling edges is the magnitude of the propagation delay difference between any two channels of the same part when one input is a rising edge and the other input is a falling edge. The supply voltages and loads on each channel are equal. 7 Part-to-part matching, rising, or falling edges is the magnitude of the propagation delay difference between the same channels of two different parts when the inputs are either both rising or falling edges. The supply voltages, temperatures, and loads of each part are equal. 8 Part-to-part matching, rising vs. falling edges is the magnitude of the propagation delay difference between the same channels of two different parts when one input is a rising edge and the other input is a falling edge. The supply voltages, temperatures, and loads of each part are equal.
Rev. A | Page 3 of 12
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
1
Symbol RI-O CI-O CI JA JC
Min
Typ 1012 2.0 4.0 54 13
Max
Unit pF pF C/W C/W
Test Conditions f = 1 MHz
3
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.
UL 1 (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 A).
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) 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)
CTI
RECOMMENDED OPERATING CONDITIONS
Table 5.
Parameter Operating Temperature Input Supply Voltage 1 Output Supply Voltages1 Input Signal Rise and Fall Times Common-Mode Transient Immunity, Input to Output 2 Common-Mode Transient Immunity, Between Outputs2 Transient Immunity, Supply Voltages2
1 2
Symbol TA VDD1 VDDA, VDDB
Min -40 4.5 12 -75 -75 -75
Max +105 5.5 18 100 +75 +75 +75
Unit C V V ns kV/s kV/s kV/s
All voltages are relative to their respective ground. See the Common-Mode Transient Immunity section for additional data.
Rev. A | Page 4 of 12
ADUM1420 ABSOLUTE MAXIMUM RATINGS
Table 6.
Parameter Storage Temperature (TST) Ambient Operating Temperature (TA) Input Supply Voltage (VDD1) 1 Output Supply Voltage (VDDA, VDDB, VDDC, VDDD)1 Input Voltage (VIA, VIB, VIC, VID)1 Output Voltage (VOA, VOB, VOC, VOD)1 Input-to-Output Voltage 2 Output Differential Voltage 3 Output DC Current (IOA, IOB) Common-Mode Transients 4
1 2
Rating -55C to +150C -40C to +105C -0.5 V to +7.0 V -0.5 V to +27 V -0.5 V to VDDI + 0.5 V -0.5 V to VDDA + 0.5 V, VDDB + 0.5 V, VDDC + 0.5 V, VDDD + 0.5 V -700 V peak to +700 V peak 700 V peak -20 mA to +20 mA -100 kV/s to +100 kV/s
B
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Ambient temperature = 25C, unless otherwise noted.
ESD CAUTION
All voltages are relative to their respective ground. Input-to-output voltage is defined as GNDx - GND1 where x is either A, B, C, or D. 3 Output differential voltage is defined as GNDx - GNDy where x and y differ from each other and are either A, B, C, or D. 4 Refers to common-mode transients across any insulation barrier. Commonmode transients exceeding the Absolute Maximum Ratings may cause latchup or permanent damage.
Rev. A | Page 5 of 12
ADUM1420
Table 7. Truth Table (Positive Logic)
VIA Input L L L L L L L L H H H H H H H H L L L L L L L L H H H H H H H H X
1
VIB Input L L L L H H H H L L L L H H H H L L L L H H H H L L L L H H H H X
VIC Input L L H H L L H H L L H H L L H H L L H H L L H H L L H H L L H H X
VID Input L H L H L H L H L H L H L H L H L H L H L H L H L H L H L H L H X
ED DISABLE L L L L L L L L L L L L L L L L NC or H NC or H NC or H NC or H NC or H NC or H NC or H NC or H NC or H NC or H NC or H NC or H NC or H NC or H NC or H NC or H X
VOA Output L L L L L L L L H H L L L L L L L L L L L L L L H H H H H H H H L
VOB Output L L L L H L H L L L L L L L L L L L L L H H H H L L L L H H H H L
VOC Output L L H L L L H L L L L L L L L L L L H H L L H H L L H H L L H H L
VOD Output L H L L L L L L L H L L L L L L L H L H L H L H L H L H L H L H L
VDD1 State 1 Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Powered Unpowered 2
Powered refers to the situation in which VDD1 is within the recommended operating conditions. Unpowered refers to the situation in which VDD1 2.0 V. Operation outside the recommended operating conditions is not recommended. See the Power-Up/Power-Down Considerations section for more information. 2 Output returns to input state within 1 s of VDD1 power restoration.
Rev. A | Page 6 of 12
ADUM1420 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
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
28 VDDB 27 VOB 26 GNDB 25 NC 24 NC
ADUM1420
TOP VIEW (Not to Scale)
23 GNDC 22 VDDC 21 VOC 20 GNDC 19 NC 18 NC 17 VDDD 16 VOD 15 GNDD
NC = NO CONNECT NOTES PIN 7 AND PIN 14 ARE INTERNALLY CONNECTED. CONNECTING BOTH TO GND1 IS RECOMMENDED. PIN 20 AND PIN 23 ARE INTERNALLY CONNECTED. CONNECTING BOTH TO GNDC IS RECOMMENDED. PIN 4, PIN 5, PIN 6, PIN 18, PIN 19, PIN 24, AND PIN 25 ARE FLOATING AND SHOULD BE LEFT UNCONNECTED.
Figure 2. Pin Configuration
Table 8. Pin Function Descriptions
Pin No. 1 2 3 4 to 6, 18, 19, 24, 25 7, 14 8 9 10 11 12 13 15 16 17 20, 23 21 22 26 27 28 Mnemonic VOA VDDA GNDA NC GND1 VDD1 VIA VIB VIC VID ED DISABLE GNDD VOD VDDD GNDC VOC VDDC GNDB VOB VDDB Description Output A. Output A Supply Voltage, 12 V to 18 V. Ground Reference for Output A. No Connection. Ground Reference for Input Logic Signals. Input Supply Voltage, 4.5 V to 5.5 V. Logic Input A. Logic Input B. Logic Input C. Logic Input D. Error Detection Disable. Disables the internal error detection function so that the logic outputs always match the logic inputs. Ground Reference for Output D. Output D. Output D Supply Voltage, 12 V to 18 V. Ground Reference for Output C. Output C. Output C Supply Voltage, 12 V to 18 V. Ground Reference for Output B. Output B. Output B Supply Voltage, 12 V to 18 V.
Rev. A | Page 7 of 12
06863-002
ADUM1420 TYPICAL PERFORMANCE CHARACTERISTICS
14 12
PROPAGATIONAL DELAY (ns)
115 114 IDD1 113 112 111 110 109 108 107
06863-003
10
CURRENT (mA)
8 6 4 2 0
0
4 DATA RATE (MBd)
10
12
15 OUTPUT SUPPLY VOLTAGE (V)
18
Figure 3. Typical Input Supply Current Variation with Data Rate
Figure 6. Typical Propagation Delay Variation with Output Supply Voltage (Input Supply Voltage = 5.0 V)
114 113
PROPAGATION DELAY (ns)
18 16 14
OUTPUT CURRENT (mA)
112 111 110 109 108 CHA RISE CHB RISE CHC RISE CHD RISE CHA FALL CHB FALL CHC FALL CHD FALL 5.5
06863-007
12 10 8 6 4 2
06863-004
0
0
4 DATA RATE (Mbps)
10
107 4.5
5.0 INPUT SUPPLY VOLTAGE (V)
Figure 4. Typical Output Supply Current Variation with Data Rate
Figure 7. Typical Propagation Delay Variation with Input Supply Voltage (Output Supply Voltage = 15.0 V)
120
PROPAGATION DELAY (ns)
115
110
105
-20
0
20 40 60 TEMPERATURE (C)
80
100
120
Figure 5. Typical Propagation Delay Variation with Temperature
06863-005
100 -40
Rev. A | Page 8 of 12
06863-006
106
CHA RISE CHB RISE CHC RISE CHD RISE CHA FALL CHB FALL CHC FALL CHD FALL
ADUM1420 APPLICATION INFORMATION
COMMON-MODE TRANSIENT IMMUNITY
In general, common-mode transients consist of linear and sinusoidal components. The linear component of a commonmode transient is given by VCM, linear = (V/t) t where V/t is the slope of the transient shown in Figure 8 and Figure 9.
15V VDD1 GND1 VDDA AND VDDB 15V VDDA AND VDDB GNDA AND GNDB VDD1 GND1 5V V t GNDA AND GND B 15V 5V
The sinusoidal component (at a given frequency) is given by VCM, sinusoidal = V0sin(2ft) where: V0 is the magnitude of the sinusoidal. f is the frequency of the sinusoidal. The transient magnitude of the sinusoidal component is given by dVCM/dt = 2f V0 The ability of the ADUM1420 to operate correctly in the presence of sinusoidal transients is characterized by the data in Figure 11 and Figure 12. The data is based on design simulation and is the maximum sinusoidal transient magnitude (2f V0) that the ADUM1420 can tolerate without an operational error. Values for immunity against sinusoidal transients are not included in Table 5 because measurements to obtain such values have not been possible.
300
V t
15V
06863-008
Figure 8. Common-Mode Transient Immunity Waveforms, Input to Output
15V VDDA /VDDB GNDA/GNDB 15V
15V VDDA /VDDB GNDA/GNDB VDDB /VDDA GNDA/GNDB 15V
V t
GNDB/GNDA
TRANSIENT IMMUNITY (kV/s)
VDDB /VDDA
15V
250 BEST-CASE PROCESS VARIATION 200
V t 15V
06863-009
150
Figure 9. Common-Mode Transient Immunity Waveforms Between Outputs
100
The transient of the linear component is given by dVCM/dt = V/t The ability of the ADUM1420 to operate correctly in the presence of linear transients is characterized by the data in Figure 10. The data is based on design simulation and is the maximum linear transient magnitude that the ADUM1420 can tolerate without an operational error. This data shows a higher level of robustness than what is shown in Table 5 because the transient immunity values obtained in Table 5 use measured data and apply allowances for measurement error and margin.
400 350
TRANSIENT IMMUNITY (kV/s)
50 WORST-CASE PROCESS VARIATION 0 250 500 750 1000 1250 FREQUENCY (MHz) 1500 1750 2000
06863-011 06863-012
0
Figure 11. Transient Immunity (Sinusoidal Transients), 27C Ambient Temperature
250
200
TRANSIENT IMMUNITY (kV/s)
BEST-CASE PROCESS VARIATION 150
300 250 200 150 100 50
BEST-CASE PROCESS VARIATION
100
50
0
WORST-CASE PROCESS VARIATION 0 250 500 750 1000 1250 FREQUENCY (MHz) 1500 1750 2000
WORST-CASE PROCESS VARIATION
Figure 12. Transient Immunity (Sinusoidal Transients), 100C Ambient Temperature
-20 0 20 40 TEMPERATURE (C) 60 80 100
06863-010
0 -40
Figure 10. Transient Immunity (Linear Transients) vs. Temperature
Rev. A | Page 9 of 12
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/powerdown 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
When VDD1 crosses the threshold for activating the refresh function (approximately 2.5 V), there can be a delay of up to 2 s 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 s 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 2.5 (TYP)
06863-013
Figure 13. VDD1 Power-Up/Power-Down Characteristics, Input Data = High
VDD1
OUTPUT DATA
Figure 14. VDD1 Power-Up/Power-Down Characteristics, Input Data = Low
06863-014
Rev. A | Page 10 of 12
ADUM1420 OUTLINE DIMENSIONS
18.10 (0.7126) 17.70 (0.6969)
28 15
7.60 (0.2992) 7.40 (0.2913)
1 14
10.65 (0.4193) 10.00 (0.3937)
0.30 (0.0118) 0.10 (0.0039) COPLANARITY 0.10 1.27 (0.0500) BSC 0.51 (0.0201) 0.31 (0.0122)
2.65 (0.1043) 2.35 (0.0925)
0.75 (0.0295) 0.25 (0.0098)
8 0
45
SEATING PLANE
0.33 (0.0130) 0.20 (0.0079)
1.27 (0.0500) 0.40 (0.0157)
COMPLIANT TO JEDEC STANDARDS MS-013-AE CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
Figure 15. 28-Lead Standard Small Outline Package [SOIC_W] Wide Body (RW-28) Dimensions shown in millimeters and (inches)
ORDERING GUIDE
Model ADUM1420BRWZ 1 ADUM1420BRWZ-RL1
1
No. of Channels 4 4
Output Peak Current (A) 0.1 0.1
Output Voltage (V) 15 15
060706-A
Temperature Range -40C to +105C -40C to +105C
Package Description 28-Lead SOIC_W 28-Lead SOIC_W, 13-Inch Tape and Reel Option (1,000 Units)
Package Option RW-28 RW-28
Z = RoHS Compliant Part.
Rev. A | Page 11 of 12
ADUM1420 NOTES
(c)2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06863-0-2/08(A)
Rev. A | Page 12 of 12

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