UNIVERSAL AMPLIFIER IC

AM400

analog microelectronics

October 2005

Analog Microelectronics GmbH

Phone:

+49 (0)6131/91 073 – 0

12/21

An der Fahrt 13, D – 55124 Mainz

Fax:

+49 (0)6131/91 073 – 30

Rev.: 4.2

Internet: http://www.analogmicro.de

Email:

info@analogmicro.de

voltage which is dependent on the selected reference voltage:

V

1

min

+

≥

REF

CC

V

V

(12)

The working range resulting from Equation 11 is described in Figure 4. Example calculations and

typical values for the external components can be found in the example applications.

POINTS TO NOTE: INITIAL OPERATION OF AM400

capacitor) is always connected (cf. Figure 2). Care must be taken that the value of the

capacitance does not lie beyond its given range, even across the range of temperature (see

2. All of the AM400 function blocks not used by the application (e.g. OP3) must be connected up

to a defined (and permitted) potential.

3. The voltages at the IA inputs (pins IN+ and IN–) must always lie within input voltage range

CMIR, even if the IA is not used.

4. When the voltage output is in operation the load resistance at pin VOUT must be at least 2k

Ω.

5. A load resistance of 600

Ω maximum is permitted with operation of the current output.

range given in the boundary conditions on page 7.

6

35

18

R

VV

I

L

S

CCmin

OUTmax

≤

−

24

12

600

Working range

0

300

0

Figure 4: Working range in conjunction with the load resistor