ADCA3992

Data Sheet

Rev. 0 | Page 8 of 9

APPLICATIONS INFORMATION

Basic connections for operating the ADCA3992 are shown in

Figure 11. Both the input pin (Pin 1) and the output pin (Pin 9)

of the ADCA3992 are matched to 75 Ω. Pin 5 is the VCC pin,

which requires 34 V for typical operation, and can support as

low as 24 V for lower power operation. It is recommended to

leave the IADJ pin (Pin 4) open for full bias operation. For bias

control on the ADCA3992 supply current, apply an external

control voltage between 0 V and 1 V at the IADJ pin. Figure 10

illustrates the ADCA3992 supply current over control voltages

at the IADJ pin.

550

250

300

350

400

450

500

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

IADJ (V)

Figure 10. Supply Current vs. IADJ

OUTPUT

75Ω LINE

ADCA3992

9

1

INPUT

8

7

GND

3

2

GND

4

IADJ

BIAS

+34V TYPICAL OR +24V

NO CONNECT FOR FULL BIAS

0V TO 1V FOR ADJUSTABLE BIAS

5

VCC

75Ω LINE

Figure 11. Basic Connections