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HCPL786J Datasheet Preview

HCPL786J Datasheet

Optically Isolated Sigma-Delta (S-D) Modulator

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HCPL-7860/HCPL-786J
Optically Isolated Sigma-Delta (S-D) Modulator
Data Sheet
Lead (Pb) Free
RoHS 6 fully
compliant
RoHS 6 fully compliant options available;
-xxxE denotes a lead-free product
Description
The HCPL-7860/HCPL-786J Optically Isolated Modulator
and HCPL-0872 Digital Interface IC or digital filter together
form an isolated programmable two-chip analog-to-digital
converter. The isolated modulator allows direct measure-
ment of motor phase currents in power inverters.
In operation, the HCPL-7860/HCPL-786J Isolated Modula-
tor converts a low-bandwidth analog input into a high-
speed one-bit data stream by means of a Sigma-Delta
(Σ−∆) over-sampling modulator. This modulation provides
for high noise margins and excellent immunity against
isolation-mode transients. The modulator data and on-
chip sampling clock are encoded and transmitted across
the isolation boundary where they are recovered and de-
coded into separate high-speed clock and data channels.
Features
12-bit Linearity
200 ns Conversion Time
(Pre-Trigger Mode 2 with HCPL-0872)
12-bit Effective Resolution with 5 µs Signal Delay
(14-bit with 102 µs) (with HCPL-0872)
Fast 3 µs Over-Range Detection (with HCPL-0872)
± 200 mV Input Range with Single 5 V Supply
1% Internal Reference Voltage Matching
Offset Calibration (with HCPL-0872)
-40°C to +85°C Operating Temperature Range
15 kV/µs Isolation Transient Immunity
Safety Approval: UL 1577, CSA and IEC/EN/DIN EN
60747-5-5
Applications
Motor Phase and Rail Current Sensing
Data Acquisition Systems
Industrial Process Control
Inverter Current Sensing
General Purpose Current Sensing and Monitoring
Input
Current
18
2 SIGMA
DELTA
MOD./
3 ENCODE
DECODE
7
6
45
HCPL-7860
HCPL-0872
or
Digital Filter
MCU
or
DSP
NOTE: A 0.1 μF bypass capacitor must be connected between pins VDD1 and GND1 and between pins VDD2 and GND2.
CAUTION: It is advised that normal static precautions be taken in handling and assembly of this
component to prevent damage and/or degradation which may be induced by ESD. The components
featured in this datasheet are not to be used in military or aerospace applications or environments.




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HCPL786J Datasheet Preview

HCPL786J Datasheet

Optically Isolated Sigma-Delta (S-D) Modulator

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Pin Description
ISOLATION
BOUNDARY
V DD1 1
8 V DD2
V IN+ 2
V IN- 3
SIGMA-
DELTA
MOD./
ENCODE
DECODE
7 MCLK
6 MDAT
GND1 4
SHIELD
5 GND2
HCPL-7860
V DD1 1
V IN+ 2
V IN- 3
NC 4
SIGMA-
DELTA
NC
5
MOD./
ENCODER
NC 6
NC 7
GND1 8
16 GND2
15 NC
14 V DD2
13 MCLK
DECODER
12 NC
11 MDAT
10 NC
9 GND2
HCPL-786J
Symbol Description
VDD1
Supply voltage input (4.5 V to 5.5 V)
VIN+ Positive input (± 200 mV recommended)
VIN- Negative input (normally connected to GND1)
GND1 Input ground
Note: NC = No connection. Leave floating.
Symbol
VDD2
MCLK
MDAT
GND2
Description
Supply voltage input (4.5 V to 5.5 V)
Clock output (10 MHz typical)
Serial data output
Output ground
Ordering Information
HCPL-7860 is UL Recognized with 3750 Vrms for 1 minute per UL1577. HCPL-786J is UL Recognized with 5000 Vrms for
1 minute per UL1577.
Option
Part number
RoHS
Compliant
Non-RoHS
Compliant
Package
Surface
Mount
Gull
Wing
Tape
& Reel
IEC/EN/DIN EN
60747-5-5 Quantity
HCPL-7860
-000E
-300E
No option
#300
300 mil
DIP-8
X
X
X 50 per tube
X 50 per tube
-500E
#500
XX X
X 1000 per reel
HCPL-786J
-000E
No option
SO-16
X 45 per tube
-500E
#500
X X X 850 per reel
To order, choose a part number from the part number column and combine with the desired option from the option
column to form an order entry.
Example 1:
HCPL-7860-500E to order product of Gull Wing Surface Mount package in Tape and Reel packaging with IEC/EN/DIN
EN 60747-5-5 Safety Approval in RoHS compliant.
Example 2:
HCPL-786J to order product of SO-16 package in tube packaging and non-RoHS compliant.
Option datasheets are available. Contact your Avago sales representative or authorized distributor for information.
Remarks: The notation ‘#XXX’ is used for existing products, while (new) products launched since 15th July 2001 and RoHS
compliant option will use ‘-XXXE’.
2


Part Number HCPL786J
Description Optically Isolated Sigma-Delta (S-D) Modulator
Maker Avago
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