AMC1204-Q1_15 Datasheet, PDF (4/33 Pages) Texas Instruments – 20 MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement

AMC1204-Q1
SLAS886B – JULY 2012 – REVISED JANUARY 2013
ISOLATION CHARACTERISTICS
PARAMETER
V_IORM
Maximum working insulation voltage per
IEC
V_PD(t)
Partial discharge test voltage per IEC
V_IOTM
R_S
PD
Transient overvoltage
Isolation resistance
Pollution degree
TEST CONDITIONS
t = 1s (100% production test),
partial discharge < 5 pC
t = 60 s (qualification test)
t = 1 s (100% production test)
V_IO = 500 V at T_S
VALUE
1200
2250
4250
5100
> 10⁹
2
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UNIT
V_PEAK
V_PEAK
V_PEAK
V_PEAK
Ω
Degrees
ISOLATOR CHARACTERISTICS⁽¹⁾
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
L(I01) Minimum air gap (clearance)
Shortest terminal to terminal distance
through air
7.9
mm
L(I02) Minimum external tracking (creepage)
Shortest terminal to terminal distance
across the package surface
7.9
mm
CTI
Tracking resistance
(comparative tracking index)
DIN IEC 60112/VDE 0303 part 1
> 400
V
Minimum internal gap
(internal clearance)
Distance through the insulation
0.014
mm
R_IO Isolation resistance
C_IO Barrier capacitance input to output
C_I
Input capacitance to ground
Input to output, V_IO = 500 V, all pins on
each side of the barrier tied together to
create a two-terminal device, T_A < 85°C
Input to output, V_IO = 500 V,
100°C ≤ T_A < T_A max
V_I = 0.8 V_PP at 1 MHz
V_I = 0.8 V_PP at 1 MHz
> 10¹²
Ω
> 10¹¹
Ω
1.2
pF
3
pF
(1) Creepage and clearance requirements should be applied according to the specific equipment isolation standards of a specific
application. Care should be taken to maintain the creepage and clearance distance of the board design to ensure that the mounting
pads of the isolator on the printed circuit board (PCB) do not reduce this distance. Creepage and clearance on a PCB become equal
according to the measurement techniques shown in the Isolation Glossary section. Techniques such as inserting grooves and/or ribs on
the PCB are used to help increase these specifications.
4
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