ADL5561ACPZ-R7 datasheet(14/24 Pages) AD

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ADL5561

Rev. B | Page 14 of 24

APPLICATIONS INFORMATION

BASIC CONNECTIONS

Figure 31 shows the basic connections for operating the ADL5561.

VCC should be 3.3 V with each supply pin decoupled with at least

one low inductance surface-mount ceramic capacitor of 0.1 μF

placed as close as possible to the device. The VCOM pin (Pin 9)

should also be decoupled using a 0.1 μF capacitor.

The gain of the part is determined by the pin-strappable input

configuration. When Input A is applied to VIP1 and Input B is

applied to VIN1, the gain is 6 dB (minimum gain; see Equation 1

and Equation 2). When Input A is applied to VIP2 and Input B is

applied to VIN2, the gain is 12 dB (middle gain). When Input A is

applied to VIP1 and VIP2 and Input B is applied to VIN1 and

VIN2, the gain is 15.5 dB (maximum gain).

Pin 1 to Pin 4, Pin 10, and Pin 11 are biased at 1/2 VCC above

ground and can be dc-coupled (if within the specified input and

output common-mode voltages levels) or ac-coupled, as shown

in Figure 31.

To enable the ADL5561, the ENBL pin must be pulled high.

Pulling the ENBL pin low puts the ADL5561 in sleep mode,

reducing the current consumption to 3 mA at ambient.

VIP2

VIP1

VIN1

VIN2

VOP

ENBL

VON

VCOM

VCC

GND

ADL5561

VCC

BALANCED

LOAD

0.1µF

10µF

0.1µF

RS/2

BALANCED

SOURCE

Figure 31. Basic Connections

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