HP HCPL-7840 Datasheet

1-248

H

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.

HCPL-7840

Analog Isolation Amplifier

Technical Data

A 0.1 F bypass capacitor must be connected between pins 1 and 4 and between pins 5 and 8.

Features

• High Common Mode

Rejection (CMR): 15 kV/µs
at VCM = 1000 V

• 5% Gain Tolerance

• 0.1% Nonlinearity

• Low Offset Voltage and Off­set Temperature Coefficient

• 100 kHz Bandwidth

• Performance Specified Over

-40°C to 85°C Temperature
Range

• Recognized Under UL 1577
and CSA Approved for
Dielectric Withstand Proof
Test Voltage of 2500 Vac, 1
Minute

• Standard 8-Pin DIP Package

Applications

• Motor Phase and Rail
Current Sensing

• Inverter Current Sensing

• Switched Mode Power
Supply Signal Isolation

• General Purpose Current
Sensing and Monitoring

• General Purpose Analog
Signal Isolation

Description

The HCPL-7840 isolation ampli­fier provides accurate, electrically
isolated and amplified representa­tions of voltage and current.

When used with a shunt resistor
in the current path, the HCPL­7840 offers superior reliability,
cost effectiveness, size and
autoinsertability compared with
the traditional solutions such as
current transformers and Hall­effect sensors.

The HCPL-7840 consists of a
sigma-delta analog-to-digital
converter optically coupled to a
digital-to-analog converter.
Superior performance in design
critical specifications such as
common-mode rejection, offset
voltage, nonlinearity, operating
temperature range and regulatory
compliance make the HCPL-7840
the clear choice for designing
reliable, lower-cost, reduced-size
products such as motor
controllers and inverters.

Common-mode rejection of
15 kV/µs makes the HCPL-7840
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 temperature
coefficient permits accurate use
of auto-calibration techniques.

Gain tolerance of 5% with 0.1%
nonlinearity further provide the
performance necessary for
accurate feedback and control.

A wide operating temperature
range with specified performance
allows the HCPL-7840 to be used
in hostile industrial environments.

Functional Diagram

1

2

3

4

8

7

6

5

I

DD1

V

DD1

V

IN+

V

IN–

GND1

I

DD2

V

DD2

V

OUT+

V

OUT–

GND2

+

–

+
–

SHIELD

5965-4784E

1-249

Package Outline Drawings

Standard DIP Package

9.65 ± 0.25

(0.380 ± 0.010)

1.78 (0.070) MAX.

1.19 (0.047) MAX.

HP 7840



YYWW

DATE CODE

1.080 ± 0.320

(0.043 ± 0.013)

2.54 ± 0.25

(0.100 ± 0.010)

0.51 (0.020) MIN.

0.65 (0.025) MAX.

4.70 (0.185) MAX.

2.92 (0.115) MIN.

7.62 ± 0.25

(0.300 ± 0.010)

5° TYP.

5678

4321

6.35 ± 0.25

(0.250 ± 0.010)

0.20 (0.008)

0.33 (0.013)

0.635 ± 0.25

(0.025 ± 0.010)

12° NOM.

0.20 (0.008)

0.33 (0.013)

9.65 ± 0.25

(0.380 ± 0.010)

0.635 ± 0.130

(0.025 ± 0.005)

7.62 ± 0.25

(0.300 ± 0.010)

5

6

7

8

4

3

2

1

9.65 ± 0.25

(0.380 ± 0.010)

6.350 ± 0.25

(0.250 ± 0.010)

1.016 (0.040)

1.194 (0.047)

1.194 (0.047)

1.778 (0.070)

9.398 (0.370)

9.960 (0.390)

4.826

(0.190)



TYP.

0.381 (0.015)

0.635 (0.025)

PAD LOCATION (FOR REFERENCE ONLY)

1.080 ± 0.320

(0.043 ± 0.013)

4.19

(0.165)

MAX.

1.780

(0.070)

MAX.

1.19

(0.047)

MAX.

2.54

(0.100)

BSC

DIMENSIONS IN MILLIMETERS (INCHES).
TOLERANCES (UNLESS OTHERWISE SPECIFIED):



xx.xx = 0.01
xx.xxx = 0.005

HP 7840



YYWW

LEAD COPLANARITY 
MAXIMUM: 0.102 (0.004)

Gull Wing Surface Mount Option 300

Ordering Information

HCPL-7840#xxx

No option = Standard DIP Package, 50 per tube
300 = Gull Wing Surface Mount Lead Option, 50 per tube
500 = Tape/Reel Package Option (1 K min.), 1000 per reel

Option data sheets available. Contact your Hewlett-Packard sales representative or authorized distributor for
more information.

1-250

Maximum Solder Reflow Thermal Profile Regulatory Information

The HCPL-7840 has been
approved by the following
organizations:

UL Recognized under UL 1577,
Component Recognition
Program, File E55361.

CSA Approved under CSA
Component Acceptance Notice
#5, File CA 88324.

240

∆T = 115°C, 0.3°C/SEC

0

∆T = 100°C, 1.5°C/SEC

∆T = 145°C, 1°C/SEC

TIME – MINUTES

TEMPERATURE – °C

220
200
180
160
140
120
100

80
60
40
20

0

260

123456789101112

(NOTE: USE OF NON-CHLORINE ACTIVATED FLUXES IS RECOMMENDED.)

Insulation and Safety Related Specifications

Parameter Symbol Value Units Conditions

Min. External Air Gap L(IO1) 7.1 mm Measured from input terminals to output
(External Clearance) terminals, shortest distance through air.

Min. External Tracking Path L(IO2) 7.4 mm Measured from input terminals to output
(External Creepage) terminals, shortest distance path along body.

Min. Internal Plastic Gap 0.08 mm Through insulation distance, conductor to
(Internal Clearance) conductor, usually the direct distance

between the photoemitter and photodetector
inside the optocoupler cavity.

Tracking Resistance CTI 200 Volts DIN IEC 112/VDE 0303 Part 1
(Comparative Tracking Index)

Isolation Group IIIa Material Group (DIN VDE 0110, 1/89, Table 1)

Option 300 - surface mount classification is Class A in accordance with CECC 00802.

Absolute Maximum Ratings

Parameter Symbol Min. Max. Unit Note

Storage Temperature T

S

-55 125 °C

Ambient Operating Temperature T

A

-40 85 °C

Supply Voltages V

DD1

, V

DD2

0.0 5.5 V

Steady-State Input Voltage V

IN+, VIN-

-2.0 V

DD1

+0.5 V 1
2 Second Transient Input Voltage -6.0
Output Voltages V

OUT+, VOUT-

-0.5 V

DD2

+0.5 V
Lead Solder Temperature T

LS

260 °C

(10 sec., 1.6 mm below seating plane)
Solder Reflow Temperature Profile See Maximum Solder Reflow Thermal Profile Section

1-251

DC Electrical Specifications

All specifications, typicals and figures are at the nominal operating conditions of V

IN+

= 0 V, V

IN-

= 0 V,

TA=25°C, V

DD1

= 5 V and V

DD2

= 5 V, unless otherwise noted.

Parameter Symbol Min. Typ. Max. Unit Test Conditions Fig. Note

Input Offset Voltage V

OS

-1.2 -0.2 1.0 mV 1 2

-3.0 -0.2 2.0 -40°C ≤ TA ≤ 85°C 1,2,3

4.5 ≤ (V

DD1

, V

DD2

) ≤ 5.5 V

Gain G 7.60 8.00 8.40 V/V -200 ≤ V

IN+

≤ 200 mV 5

7.44 8.00 8.56 -200 ≤ V

IN+

≤ 200 mV 5,6,7

-40°C ≤ TA ≤ 85°C

4.5 ≤ (V

DD1

, V

DD2

) ≤ 5.5 V

200 mV Nonlinearity NL

200

0.1 0.2 % -200 ≤ V

IN+

≤ 200 mV 5, 8 3

0.4 -200 ≤ V

IN+

≤ 200 mV 5,8,9

-40°C ≤ TA ≤ 85°C 10,12

4.5 ≤ (V

DD1

, V

DD2

) ≤ 5.5 V

100 mV Nonlinearity NL

100

0.05 0.1 -100 ≤ V

IN+

≤ 100 mV 5, 8

0.2 -100 ≤ V

IN+

≤ 100 mV 5,8,9

-40°C ≤ TA ≤ 85°C 11,12

4.5 ≤ (V

DD1

, V

DD2

) ≤ 5.5 V

Maximum Input Voltage |V

IN+

| 320 mV 4

Before Output Clipping
Average Input Bias Current I

IN

-0.57 µA134

Average Input Resistance R

IN

480 kΩ

Input DC Common-Mode CMRR

IN

69 dB 5

Rejection Ratio
Output Resistance R

O

1 Ω

Output Low Voltage V

OL

1.28 V V

IN+

= 400 mV 4 6

Output High Voltage V

OH

3.84 V V

IN+

= -400 mV

Output Common-Mode V

OCM

2.20 2.56 2.80 V -400 < V

IN+

< 400 mV

Voltage
Input Supply Current I

DD1

8.7 15.5 mA 14

Output Supply Current I

DD2

8.8 14.5 mA 15

Output Short-Circuit Current |I

OSC

|11mAV

OUT

= 0 V or V

DD2

7

-40°C ≤ TA ≤ 85°C

4.5 ≤ (V

DD1

, V

DD2

) ≤ 5.5 V

MAX

Recommended Operating Conditions

Parameter Symbol Min. Max. Unit Note

Ambient Operating Temperature T

A

-40 85 °C

Supply Voltages V

DD1

, V

DD2

4.5 5.5 V

Input Voltage V

IN+,VIN-

-200 200 mV 1