AM452 – Voltage-to-current transducer IC

with a differential input

Analog Microelectronics GmbH

An der Fahrt 13, D – 55124 Mainz

February 2008 - Rev 1.2 - Page 4/21

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

Fax:

+49 (0)6131/91 073-30

Internet: http://www.analogmicro.de

Email: info@analogmicro.de

ELECTRICAL SPECIFICATIONS

Tamb = 25°C, VCC = 24V, VREF = 5V, IREF = 1mA (unless otherwise stated)

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

Supply Voltage Range

VCC

VSET not connected

6

35

V

Quiescent Current

ICC

Tamb = – 40...+85°C, IREF = 0mA

1.5

mA

Temperature Specifications

Operating

Tamb

–40

85

°C

Storage

Tst

–55

125

°C

Junction

TJ

150

°C

Voltage Reference

Voltage

VREF

VSET not connected

4.75

5.00

5.25

V

VREF

VSET = GND, VCC ≥ 11V

9.5

10.0

10.5

V

Current

IREF *

0

10.0

mA

VREF vs. Temperature

dVREF/dT

Tamb = - 40...+85°C

±90

±140

ppm/°C

Line Regulation

dVREF/dV

VCC = 6V...35V

30

80

ppm/V

dVREF/dV

VCC = 6V...35V, IREF ≈ 5mA

60

150

ppm/V

Load Regulation

dVREF/dI

0.05

0.10

%/mA

dVREF/dI

IREF ≈ 5mA

0.06

0.15

%/mA

Load Capacitance

CL

1.9

2.2

5.0

µF

Current/Voltage Source OP2

Internal Reference

VBG

1.20

1.27

1.35

V

VBG vs. Temperature

dVBG/dT

Tamb = - 40...+85°C

±60

±140

ppm/°C

Current Source: ICV = VBG/REXT

Adjustable Current Range*

ICV *

0

10

mA

Output Voltage

VCV

VCC < 19V

VBG

VCC – 4

V

VCV

VCC ≥ 19V

VBG

15

V

Voltage Source: VCV = VBG (REXT1 + REXT2) / REXT2

Adjustable Voltage Range

VCV

VCC < 19V

0.4

VCC – 4

V

VCV

VCC ≥ 19V

0.4

15

V

Output Current

ICV *

Source

10

mA

ICV

Sink

–100

µA

Load Capacitance

CL

Source mode

0

1

10

nF

* In 2-wire operation IS has to fulfill the condition ICC +IS < IOUTmin with IOUTmin = 4mA