ISOSD61
Datasheet
16-Bit isolated Σ-∆ modulator, single-ended and LVDS interfaces
Features
•
•
•
•
•
•
•
•
•
•
•
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Up to 25 MHz external clock input
±320 mV full scale analog input range
16 bits resolution, no missing codes
86 dB typical SNR
-83 dB typical THD
13 bits typical ENOB
Low Voltage Differential Signaling (LVDS) and Single - ended (TTL/CMOS)
options
–40°C to +125°C extended industrial temperature range
SO-16 wide package
30 kV/µs typical High Common-mode transient immunity
6000 V
PEAK
Isolation Voltage V
IOTM
1200 V
PEAK
Working Voltage V
IORM
Application
Current and voltage sensing in:
•
Industrial motor control
•
Solar inverter
•
UPS
•
Electric vehicle charger
•
Factory automation
•
Telecom and server power supply
Product status link
ISOSD61
Product label
Description
The
ISOSD61
is a galvanic isolated second order Sigma-Delta modulator based on
embedded transformer coupling technology. It converts an analog input signal with
maximum range of ±320mV into a high speed, 25 Msps, 1-bit digital data stream.
The signal information can be rebuilt by means of a digital filtering. The modulator
is isolated from the digital I/O section through a high-speed isolated data coupling,
whose performances are far better than other isolated transceivers like optocouplers.
DS13605
-
Rev 5
-
June 2021
For further information contact your local STMicroelectronics sales office.
www.st.com
ISOSD61
Pin description
Table 1.
Pin description
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin name
VDDISO
VIN+
VIN-
GNDISO
NC
(1)
NC
(1)
VDDISO
GNDISO
GND
MDAT-
MDAT+/MDAT
MCLKIN-
MCLKIN+/MCLKIN
VDD
NC
GND
GND low voltage side
GND low voltage side
VDD high voltage side
GND high voltage side
GND low voltage side
Serial data output-
Serial data output+
Clock input-
Clock input+
VDD low voltage side
VDD high voltage side
GND high voltage side
GND low voltage side
NC
Serial data output
NC
Clock input
VDD low voltage side
Pin description (ISOSD61L)
VDD high voltage side
Positive analog input
Negative analog input
GND high voltage side
Pin description (ISOSD61)
VDD high voltage side
Positive analog input
Negative analog input
GND high voltage side
1. For test purpose only; it must be connected to GND in functional mode.
DS13605
-
Rev 5
page 4/23
ISOSD61
Device specifications
3
Device specifications
Table 2.
Isolation characteristics
Description
Maximum Working Isolation Voltage
Symbol
V
IORM
-
Method a, Type test
V
PR
= V
IORM
×1.6, t
m
= 10 s
Input to Output Test Voltage
In accordance with VDE 0884-11
V
PR
Partial discharge < 5 pC
Method b, 100 % Production test
V
PR
= V
IORM
×1.875, t
m
= 1 s
Partial discharge < 5 pC
Transient Overvoltage (Highest
Allowable Overvoltage)
Maximum Surge Test Voltage
Isolation Resistance
V
IOTM
V
IOSM
R
IO
t
ini
= 60 s, Type test
Type test
V
IO
= 500 V at T
S
, Type test
6000
6000
>10
9
V
PEAK
V
PEAK
Ω
2250
V
PEAK
1920
V
PEAK
Test Conditions
Characteristic
1200
Unit
V
PEAK
Table 3.
UL 1577
Descripion
Isolation Withstand Voltage, 1min (Type test)
Isolation Test Voltage, 1sec (100% production)
V
ISO
V
ISOtest
Symbol
Characteristic
3535/5000
4242/6000
Unit
V
RMS
/V
PEAK
V
RMS
/V
PEAK
Table 4.
Safety-limiting values (maximum values allowed in the event of a failure)
Description
Case temperature
Input current
Output power
T
s
I
S, INPUT
P
S, OUPUT
Symbol
150
100
1100
Value
°C
mA
mW
Unit
Table 5.
Isolation and safety-related specifications
Parameter
Minimum External Air Gap (External
Clearance)
Minimum External Tracking (External
Creepage)
Tracking Resistance
(Comparative Tracking Index)
Isolation Group
Symbol
CLR
CPG
CTI
Value
8
8
≥ 400
Unit
mm
mm
V
II
Conditions
Measured from input terminals to output terminals,
shortest distance through air
Measured from input terminals to output terminals,
shortest distance path along body
DIN IEC 112/VDE 0303 Part 1
Material Group (DIN VDE 0110, 1/89, Table 1)
Table 6.
Absolute maximum ratings
Parameter
Storage temperature
T
S
Symbol
-55
Min.
150
Max.
Units
°C
DS13605
-
Rev 5
page 5/23
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