Industrial V/I Converter and Protector IC

AM462

Analog Microelectronics GmbH

An der Fahrt 13, D – 55124 Mainz

Oktober 2007 – Rev.2.5 -Page 5/20

Phone: +49 (0)6131/91 073-0

Fax: +49 (0)6131/91 073-30

Internet:

http://www.analogmicro.de

Email: info@analogmicro.de

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

Operational Amplifier Gain Stage (OP1) (cont.)

VOS vs. Temperature

dVOS/dT

±3

±7

µV/°C

Input Bias Current

IB

10

25

nA

IB vs. Temperature

dIB/dT

7

20

pA/°C

Output Voltage Limitation

VLIM

VREF

V

Output Voltage Range

VOUTAD

VCC < 10V

0

VCC – 5

V

VOUTAD

VCC ≥ 10V

0

VREF

V

Load Capacitance

CL

250

pF

V/I Converter

Internal Gain

GVI

0,12

0.125

0,13

Trim Range

Adjustable by R0

0.75

1.00

1.25

Voltage Range at R0 FS

VR0FS

350

750

mV

Offset Voltage

VOS

Forward Current Gain of T1 βF ≥ 100

±2

±4

mV

VOS vs. Temperature

dVOS/dT

Forward Current Gain of T1 βF ≥ 100

±7

±14

µV/°C

Input Resistance

RIN

120

160

k

Ω

RIN vs. Temperature

dRIN/dT

0.2

0.3

k

Ω/°C

Output Offset Current

IOUTOS

3-wire operation

–25

–35

µA

IOUTOS vs. Temperature

dIOUTOS/dT

3-wire operation

16

26

nA/°C

Output Offset Current

IOUTOS

2-wire operation

9.5

14

µA

IOUTOS vs. Temperature

dIOUTOS/dT

2-wire operation

6

8

nA/°C

Output Control Current

IOUTC

2-wire operation, VR0/100mV

6

8

µA

IOUTC vs. Temperature

dIOUTC/dT

2-wire operation

–10

–15

nA/°C

Output Voltage Range

VOUT

VOUT = RL IOUT, VCC < 18V

0

VCC – 6

V

VOUT

VOUT = RL IOUT, VCC ≥ 18V

0

12

V

Output Current Range FS

IOUTFS

IOUT = VR0/R0, 3-wire operation

20

mA

Output Resistance

ROUT

0.5

1.0

M

Ω

Load Capacitance

CL

0

500

nF

SET Stage

Internal Gain

GSET

0.5

Input Voltage

VSET

0

1.15

V

Offset Voltage

VOS

±0.5

±1.5

mV

VOS vs. Temperature

dVOS/dT

±1.6

±5

µV/°C

Input Bias Current

IB

8

20

nA

IB vs. Temperature

dIB/dT

7

18

pA/°C

Protection Functions

Voltage Limitation at R0

VLIMR0

VINDAI = 0, VR0 = GSET VSET

580

635

690

mV

Protection against reverse polarity

Ground vs. VS vs. VOUT

35

V

Ground vs. VS vs. IOUT

35

V

Current in the event of reverse polarity

Ground = 35V, VS = IOUT = 0

4.5

mA

System Parameters

Nonlinearity

Ideal input

0.05

0.15

%FS

* In 2-wire operation a maximum current of IOUTmin – ICC is valid