AD7403 Datasheet, PDF (7/25 Pages) Analog Devices – 16-Bit, Isolated Sigma-Delta Modulator

AD7403
Data Sheet
PACKAGE CHARACTERISTICS
Table 4.
Parameter
Symbol Min Typ Max Unit Test Conditions/Comments
Resistance (Input to Output)¹
RI-O
10¹²
Ω
Capacitance (Input to Output)¹
CI-O
2.2
pF f = 1 MHz
IC Junction to Ambient Thermal Resistance θJA
45
°C/W Thermocouple located at center of package underside,
test conducted on 4-layer board with thin traces
1 _{The device is considered a 2-terminal device. For AD7403, Pin 1 to Pin 8 are shorted together and Pin 9 to Pin 16 are shorted together. For AD7403-8, Pin 1 to Pin 4 are}
shorted together, Pin 5 to Pin 8 are shorted together.
INSULATION AND SAFETY RELATED SPECIFICATIONS
Table 5.
Parameter
Input to Output Momentary Withstand Voltage
Minimum External Air Gap (Clearance)
AD7403
AD7403-8
Minimum External Tracking (Creepage)
AD7403
AD7403-8
Minimum Internal Gap (Internal Clearance)
Tracking Resistance (Comparative Tracking Index)
Isolation Group
Symbol Value
Unit Test Conditions/Comments
VISO
5000 min V
1 minute duration
L(I01)
L(I01)
8.3 min^{1, 2} mm Measured from input terminals to output
terminals, shortest distance through air
8.1 min^{1, 2} mm Measured from input terminals to output
terminals, shortest distance through air
L(I02)
L(I02)
CTI
8.3 min¹
mm Measured from input terminals to output
terminals, shortest distance path along body
8.1 min¹ mm Measured from input terminals to output
terminals, shortest distance path along body
0.034 min mm Distance through insulation
>400
V
DIN IEC 112/VDE 0303 Part 1³
II
Material Group (DIN VDE 0110, 1/89, Table I)³
1 _{In accordance with IEC 60950-1 guidelines for the measurement of creepage and clearance distances for a pollution degree of 2 and altitudes ≤2000 m.}
2 _{Consideration must be given to pad layout to ensure the minimum required distance for clearance is maintained.}
3 _{CSA CTI rating for the AD7403 is >600 V and a Material Group I isolation group. AD7403-8 is >400 and a Material Group II isolation group.}
REGULATORY INFORMATION
Table 6.
UL¹
Recognized under 1577
Component Recognition
Program¹
5000 V rms Isolation Voltage
Single Protection
File E214100
CSA
Approved under CSA Component Acceptance Notice 5A
VDE²
Certified according to DIN V VDE V 0884-10
(VDE V 0884-10):2006-12²
Basic insulation per CSA 60950-1-07 and IEC 60950-1,
AD7403: 830 V rms (1173 VPEAK), AD7403-8: 810 Vrms
(1145 VPEAK) maximum working voltage³
Reinforced insulation per CSA 60950-1-07 and
IEC 60950-1. AD7403: 415 V rms (586 VPEAK), AD7403-8:
405 V rms (583 VPEAK) maximum working voltage³
Reinforced insulation per IEC 60601-1, 250 V rms
(353 VPEAK) maximum working voltage
File 205078
Reinforced insulation per DIN V VDE V 0884-10
(VDE V 0884-10):2006-12, 1250 VPEAK
File 2471900-4880-0001
1 _{In accordance with UL 1577, each AD7403 is proof tested by applying an insulation test voltage ≥ 6000 V rms for 1 second (current leakage detection limit = 15 µA).}
2 _{In accordance with DIN V VDE V 0884-10, each AD7403 is proof tested by applying an insulation test voltage ≥ 2344 VPEAK for 1 second (partial discharge detection limit = 5 pC).}
3 _{Rating is calculated for a pollution degree of 2 and a Material Group III. The AD7403 RI-16-2 package material is rated by CSA to a CTI of >600 V and therefore}
Material Group I. The AD7403-8 RI-8-1 package material is rated by CSA to a CTI of >400 V and therefore Material Group II.
Rev. B | Page 6 of 24