Hermetically Sealed Analog Isolation Amplifier
Data Sheet
HCPL-7850, HCPL-7851, 5962-97557
Description
The HCPL-7850/7851 is an isolation amplifier that provides
accurate, electrically isolated and amplified representations
of voltage and current. When used with a shunt resistor to
monitor the motor phase current in a high speed motor
drive, the device will offer superior reliability compared
with the traditional solutions such as current transformers
and Hall-effect sensors. The HCPL-7850/7851 consists of a
sigma-delta analog-to-digital converter optically coupled
to a digital-to-analog converter in a hermetically sealed
package. The products are capable of operation and stor-
age over the full military temperature range and can be
purchased as either commercial product or with full MIL-
PRF-38534 Class H testing or from the appropriate DSCC
drawing. All devices are manufactured and tested on a
MIL-PRF-38534 certified line and are included in the DSCC
Qualified Manufacturers List, QML-38534 for Hybrid Mi-
crocircuits.
Features
•
Performance guaranteed over full military
temperature range: –55˚C to +125˚C
•
Manufactured and tested on a MIL-PRF-38534
certified line
•
Hermetically sealed packages
•
Dual marked with device part number and DSCC
drawing number
•
QML-38534, Class H
•
HCPL-7840 function compatibility
•
High common mode rejection (CMR):
8 kV/µs at VCM = 1000 V
•
5% gain tolerance
•
0.1% nonlinearity
•
Low offset voltage and offset temperature coefficient
•
100 kHz bandwidth
Applications
Schematic Diagram
I
DD1
V
DD1
V
IN+
V
IN–
GND1
1
2
3
4
+
–
+
–
I
DD2
8
7
V
DD2
V
OUT+
V
OUT–
GND2
6
5
SHIELD
•
•
•
•
•
•
•
•
•
Industrial and military
High reliability systems
Harsh industrial environments
Transportation, medical, and life critical systems
General purpose analog signal isolation
Motor phase and rail current sensing
Inverter current sensing
Switched mode power supply signal isolation
General purpose current sensing and monitoring
A 0.1 F bypass capacitor must be connected between pins 1 and 4 and between pins 5 and 8.
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.
Superior performance in design critical specifications such
as common-mode rejection, offset voltage, nonlinearity,
and operating temperature make the HCPL-7850/7851 an
excellent choice for designing reliable products such as
motor controllers and inverters.
Common-mode rejection of 8 kV/µs makes the HCPL-7850/
7851 suitable for noisy electrical environments such as
those generated by the high switching rates of power
IGBTs.
Low offset voltage together with a low offset voltage tem-
perature coefficient permits accurate use of auto-calibra-
tion techniques.
Gain tolerance of 5% with 0.1% nonlinearity further pro-
vide the performance necessary for accurate feedback and
control.
Selection Guide-Lead Configuration Options
Avago Part Number and Options
Commercial
MIL-PRF-38534, Class H
Standard Lead Finish
Solder Dipped*
Butt Cut/Gold Plate
Gull Wing/Soldered*
SMD Part Number
Prescript for all below
Either Gold or Solder
Gold Plate
Solder Dipped*
Butt Cut/Gold Plate
Butt Cut/Soldered*
Gull Wing/Soldered*
*Solder contains lead.
HCPL-7850
HCPL-7851
Gold Plate
Option #200
Option #100
Option #300
5962-
9755701HPX
9755701HPC
9755701HPA
9755701HYC
9755701HYA
9755701HXA
Device Marking
Avago DESIGNATOR
Avago P/N
DSCC SMD*
DSCC SMD*
PIN ONE/
ESD IDENT
A QYYWWZ
XXXXXXXX
XXXXXXXXX
XXX
XXX
50434
* QUALIFIED PARTS ONLY
COMPLIANCE INDICATOR,*
DATE CODE, SUFFIX (IF NEEDED)
COUNTRY OF MFR.
Avago CAGE CODE*
2
;;;;
;;
;
9.40 (0.370)
9.91 (0.390)
0.76 (0.030)
1.27 (0.050)
0.51 (0.020)
MIN.
2.29 (0.090)
2.79 (0.110)
Outline Drawing
8.13 (0.320)
MAX.
7.16 (0.282)
7.57 (0.298)
4.32 (0.170)
MAX.
3.81 (0.150)
MIN.
0.20 (0.008)
0.33 (0.013)
0.51 (0.020)
MAX.
NOTE: DIMENSIONS IN MILLIMETERS (INCHES).
7.36 (0.290)
7.87 (0.310)
Hermetic Optocoupler Options
Option
100
Description
Surface mountable hermetic optocoupler with leads trimmed for butt joint assembly. This option
is available on commercial and hi-rel product in 8 pin DIP (see drawings below for details).
4.32 (0.170)
MAX.
0.51 (0.020)
MIN.
;;;
;
2.29 (0.090)
2.79 (0.110)
2.29 (0.090)
2.79 (0.110)
1.14 (0.045)
1.40 (0.055)
0.20 (0.008)
0.33 (0.013)
7.36 (0.290)
7.87 (0.310)
0.51 (0.020)
MAX.
NOTE: DIMENSIONS IN MILLIMETERS (INCHES).
200
Lead finish is solder dipped rather than gold plated. This option is available on commercial and
hi-rel product in 8 pin DIP. DSCC Drawing part numbers contain provisions for lead finish.
Surface mountable hermetic optocoupler with leads cut and bent for gull wing assembly. This
option is available on commercial and hi-rel product in 8 pin DIP (see drawings below for
details). This option has solder dipped leads.
300
0.51 (0.020)
MIN.
;;;
5.57 (0.180)
4.57 (0.180)
MAX.
MAX.
0.20 (0.008)
0.33 (0.013)
9.65 (0.380)
9.91 (0.390)
4.57 (0.180)
5.57 (0.180)
MAX.
MAX.
1.40 (0.055)
1.65 (0.065)
5° MAX.
0.51 (0.020)
MAX.
NOTE: DIMENSIONS IN MILLIMETERS (INCHES).
Solder contains lead.
3
Absolute
Maximum Ratings
Parameter
Storage Temperature
Operating Temperature
Supply Voltages
Steady-State Input Voltage
2 Second Transient Input Voltage
Output Voltages
Lead Solder Temperature
Symbol
T
S
T
A
V
DD1
, V
DD2
V
IN+
, V
IN-
V
OUT+
, V
OUT-
Min.
-65
-55
0.0
-2.0
-6.0
-0.5
Max.
+150
+125
+5.5
V
DD1
+ 0.5
V
DD1
+ 0.5
V
DD2
+ 0.5
260 for 10 sec
Units
°C
°C
V
V
V
V
°C
1
1
Notes
ESD Classification
(MIL-STD-883, Method 3015)
HCPL-7850/7851
(▲); Class 1
Recommended Operating Conditions
Parameter
Supply Voltages
Input Voltage (See Note 1)
Symbol
V
DD1
,
V
DD2
V
IN+
,
V
IN–
Min.
4.5
–200
Max.
5.5
+200
Units
Volts
mV
4
DC Electrical Specifications
Over recommended operating conditions (T
A
= –55˚C to +125˚C, V
IN+
= 0 V, V
IN–
= 0 V, V
DD1
= 5 V and V
DD2
= 5 V,
unless otherwise specified).
Parameter
Input Offset
Voltage
Gain
Symbol
V
OS
G
Group A
[12]
Subgroups
1,2,3
2,3
1
2,3
1
2,3
1
1,2,3
Min.
–1.0
7.36
7.60
Typ.*
0.6
8.00
8.00
0.05
0.05
0.01
0.01
2.56
Max. Units Test Conditions
5.0
mV
4.5 V
≤
(V
DD1
, V
DD2
)
≤
5.5 V
8.64 V/V
–200 mV
≤
V
IN+
≤
200 mV,
4.5 V
≤
(V
DD1
, V
DD2
)
8.4
≤
5.5 V
0.8
%
–200 mV
≤
V
IN+
≤
200 mV,
4.5 V
≤
(V
DD1
, V
DD2
)
0.2
≤
5.5 V
0.2
–100 mV
≤
V
IN+
≤
100 mV,
4.5 V
≤
(V
DD1
, V
DD2
)
0.1
≤
5.5 V
2.80 V
–400 mV
≤
V
IN+
≤
400 mV,
4.5 V
≤
(V
DD1
, V
DD2
)
≤
5.5 V
15.5 mA
14.5
1.0
mA
µA
RH
≤
65%, t = 5 sec.
V
I–O
= 1500 Vdc,
T
A
= 25˚C
4,12
Fig.
1,2,
3
5,6,
7
5,8,
9,10,
12
5,8,
9,11,
12
Note
2
200 mV
Nonlinearity
100 mV
Nonlinearity
Output
Common-Mode
Voltage
Input Supply
Current
Output Supply
Current
Input-Output
Insulation
Leakage
Current
Maximum
Input Voltage
Before Output
Clipping
Average Input
Bias Current
Average Input
Resistance
Input DC
Common-Mode
Rejection Ratio
Output
Resistance
Output Low
Voltage
Output High
Voltage
Output Short-
Circuit Current
Resistance
(Input-Output)
Capacitance
(Input–Output)
NL
200
3
NL
100
V
OCM
2.20
I
DD1
I
DD2
I
I–O
1,2,3
1,2,3
1
10.7
9.4
14,17
15,17
11
|V
IN+
|
MAX
320
mV
I
IN
R
IN
CMRR
IN
–0.57
480
69
µA
kΩ
dB
Ω
V
V
mA
Ω
pF
V
IN+
= 400 mV
V
IN+
= –400 mV
V
OUT
= 0 V or V
DD2
V
I–O
= 500 Vdc
f = 1 MHz
V
I–O
= 0 Vdc
13
4
5
R
O
V
OL
V
OH
|I
OSC
|
R
I–O
C
I–O
1
1.28
3.84
11
10
12
2.7
4
6
7
11
*All typicals are at the nominal operating conditions of V
IN+
= 0 V, V
IN–
= 0 V, T
A
= 25˚C, V
DD1
= 5 V and V
DD2
= 5 V.
5
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