ADL5721

Data Sheet

Rev. 0 | Page 14 of 15

BASIC CONNECTIONS FOR OPERATION

Figure 35 shows the basic connections for operating the ADL5721 as it is implemented on the evaluation board of the device.

ADL5721

25-146-1000-92

ADM7170ACPZ-1.8

ADM7172ACPZ-3.3

RED

4.7UF

1000PF

4.7UF

0

4.7UF

0

1000PF

4.7UF

69157-102

0.1UF

33PF

33PF

0.1UF

0

10K

CNSRI2516100092_SW109201A5

4.7NF

442

RED

RED

BLK

CNSRI2516100092_SW109201A5

CNSRI2516100092_SW109201A5

25-146-1000-92

25-146-1000-92

4.7NF

C4

C1

C2

C3

C6

C5

RFIN

RBIAS

P1

R3

U1

U2

C8

C7

R1

C9

C12

C11

R2

C10

5V

GND

3P3V

1P8V

R4

572X_RFON

572X_RFOP

DUTA

1.8V

5V

5V

3.3V

3.3V

3.3V

1.8V

1.8V

5V

1.8V

RFIN

OUTN

OUTP

BAND

1

1

2

5

3

4

8

7

1

2

5

PAD 6

PAD 6

3

4

8

7

1

2

1

1

1

1

1

1

4 3

2

4 3

2

4

3

2

5

2

3

7

6

PAD

4

1

8

AGND

AGND

AGND

AGND

OUTN

OUTP

INPT

PAD

VCC2

BAND

RBIAS

GND

VCC1

AGND

AGND

AGND

AGND

AGND

AGND

AGND

AGND

AGND

EP

VIN

VIN

GND

EN

SS

SENSE

VOUT

VOUT

EP

VIN

VIN

GND

EN

SS

SENSE

VOUT

VOUT

AGND

AGND

AGND

AGND

AGND

AGND

AGND

AGND

AGND

Figure 35. Evaluation Board Schematic

Table 6. Evaluation Board Configuration Options

Component

Function

Default Condition

3P3V, 1P8V, GND, 5V

Power supplies and ground.

Not applicable

RFIN, 572X_RFOP, 572x_RFON, BAND

Input, output, and data.

Not applicable

RBIAS

442 Ω for RBIAS.

RBIAS = 442 Ω (0402)

R1, R2

1.8 V and 3.3 V regulator connections.

R1, R2 = 0 Ω (0402)

R3

Band select.

R3 = 0 Ω (0603)

R4

Pull-up or pull-down resistor.

R4 = 10 kΩ (0402)

C1 to C12

The capacitors provide the required decoupling of the supply

related pins.

C1, C4 = 4.7 nF (0402),

C2, C3 = 33 pF (0402),

C5, C6 = 0.1 µF (0402),

C7, C9, C10, C12 = 4.7 µF (0603),

C8, C11 = 1000 pF (0603)

P1

Jumper to change bands, 2-pin jumper.

Not applicable

U1

ADM7170ACPZ-1.8 1.8 V regulator.

Not applicable

U2

ADM7172ACPZ-3.3 3.3 V regulator.

Not applicable

DUTA

ADL5721 device under test (DUT).

Not applicable