ACPL-785E datasheet(5/16 Pages) BOARDCOM

Part #	ACPL-785E

Description	Hermetically Sealed Analog Isolation Amplifier

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Manufacturer	BOARDCOM [Broadcom Corporation.]

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Broadcom

- 5 -

ACPL-785E, HCPL-7850, HCPL-7851, 5962-97557

Data Sheet

DC Electrical Specifications

Over recommended operating conditions (TA = –55°C to +125°C, VIN+ = 0V, VIN– = 0V, VDD1 = 5V and VDD2 = 5V, unless otherwise

specified).

Parameter

Symbol

Group Aa

Subgroups

a.

Commercial parts receive 100% testing at 25°C (Subgroups 1 and 9). SMD, Class H and Class E receive 100% testing at 25, 125, and –55°C (Subgroups 1 and 9,

2 and 10, 3 and 11, respectively).

Min

Typb

b.

All typicals are at the nominal operating conditions of VIN+ = 0V, VIN– = 0V, TA = 25°C, VDD1 = 5V and VDD2 = 5V.

Max

Unit

Test Conditions

Fig

Notes

Input Offset Voltage

VOS

1, 2 ,3

–1.0

0.6

5.0

mV

4.5V ≤ (VDD1, VDD2) ≤ 5.5V

1, 2, 3

c

c.

Exact offset value is dependent on layout of external bypass capacitors. The offset value in the data sheet corresponds to Broadcom’s recommended layout

(see Figure 26 and Figure 27).

Gain

G

2, 3

7.36

8.00

8.64

V/V

–200 mV ≤ VIN+ ≤ 200 mV,

4.5V ≤ (VDD1, VDD2) ≤ 5.5V

5, 6, 7

1

7.60

8.00

8.4

20-mV Nonlinearity

NL200

2, 3

—

0.05

0.8

%

–200 mV ≤ VIN+ ≤ 200 mV,

4.5V ≤ (VDD1, VDD2) ≤ 5.5V

5, 8, 9,

10, 12

d

d.

Nonlinearity is defined as half of the peak-to-peak output deviation from the best-fit gain line, expressed as a percentage of the full-scale differential output

voltage.

1

—

0.05

0.2

10-mV Nonlinearity

NL100

2, 3

—

0.01

0.2

–100 mV ≤ VIN+ ≤ 100 mV,

4.5V ≤ (VDD1, VDD2) ≤ 5.5V

5, 8, 9,

11, 12

1

—

0.01

0.1

Output Common-Mode Voltage

VOCM

1, 2, 3

2.20

2.56

2.80

V

–400 mV ≤ VIN+ ≤ 400 mV,

4.5V ≤ (VDD1, VDD2) ≤ 5.5V

Input Supply Current

IDD1

1, 2, 3

—

10.7

15.5

mA

14, 16

Output Supply Current

IDD2

1, 2, 3

—

9.4

17

mA

15, 16

Input-Output Insulation

Leakage Current

II–O

1

—

1.0

μA

RH ≤ 65%, t = 5 sec.

VI–O = 1500 Vdc, TA = 25°C

e

e.

Device considered a two-terminal device: Pins 1, 2, 3, and 4 are shorted together, and pins 5, 6, 7, and 8 are shorted together.

Maximum Input Voltage Before

Output Clipping

|VIN+|

MAX

—

320

—

mV

4, 12

Average Input Bias Current

IIN

—

–0.57

—

μA

13

f

f.

Because of the switched capacitor nature of the sigma-delta A/D converter, time averaged values are shown.

Average Input Resistance

RIN

—

480

—

kΩ

Input DC Common-Mode

Rejection Ratio

CMRRIN

—69

—

dB

g

g.

CMRRIN is defined as the ratio of the gain for differential inputs applied between pins 2 and 3 to the gain for both common-mode inputs applied to both pins

2 and 3 with respect to pin 4.

Output Resistance

RO

—1—

Ω

Output Low Voltage

VOL

—1.28

—

V

VIN+ = 400 mV

4

h

h.

When the differential input signal exceeds approximately 320 mV, the outputs will limit at the typical values shown.

Output High Voltage

VOH

—3.84

—

V

VIN+ = –400 mV

Output Short-Circuit Current

|IOSC|—

11

—

mA

VOUT = 0V or VDD2

i

i.

Short-circuit current is the amount of output current generated when either output is shorted to VDD2 or ground. Broadcom does not recommend operations

under these conditions.

Resistance (Input-Output)

RI–O

—

1012

—Ω

VI–O = 500 Vdc

e

Capacitance (Input–Output)

CI–O

—2.7

—

pF

f = 1 MHz, VI–O = 0 Vdc

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