Data Sheet

ADL5202

Rev. D | Page 27 of 29

EVALUATION BOARD CONFIGURATION OPTIONS

Configuration Options for the Main Section

Table 9. Bill of Materials for Main Section

Components

Function

Default Conditions

C24 to C27, C51

Power supply decoupling. Nominal supply decoupling consists of a 0.1 µF

capacitor to ground.

C24 to C27, C51 = 0.1 µF (Size 0603)

VPOS, 3V3

GND

Power supply connections.

VPOS, 3V3 (test loop red) installed

GND (test loop black) installed

DUT1

Evaluation device.

Installed

INA+, INA−

INB+, INB−

T1, T2, C18 to C23,

R8, R9, R20 to R29,

R88, R89

Input interfaces. The INA+ and INA− input SMA connectors are used to

drive the Channel A balun in a single-ended fashion. The INB+ and INB−

input SMAs are used to drive the Channel B balun in a single-ended fashion.

The default configuration of the evaluation board is for single-ended

operation.

T1 and T2 are 3:1 impedance ratio RF transformers that are used to transform

a 50 Ω, single-ended input into a 150 Ω balanced differential signal.

C18 and C19 are balun decoupling capacitors. C20 to C23 are used for

dc blocking purposes.

R20 to R29 are provided for generic placement of matching components.

R88 and R89 are populated to ground on one side of the transformer

primary, creating the 50 Ω single-ended input.

INA+ (SMA connector) installed

INA− (SMA connector) installed

INB+ (SMA connector) installed

INB− (SMA connector) installed

T1, T2 = TC3-1T+ (Mini-Circuits)

C18 to C23 = 0.1 µF (Size 0603)

R8, R9, R26 to R29 = 0 Ω (Size 0402)

R20 to R25, R88, R89 = open

OUTA+, OUTA−

OUTB+, INB−

T3, T4, C36 to C45,

R63 to R82, L1 to L4

VXA, VXB

Output interfaces. The OUTA+ and OUTA− output SMA connectors are used to

load the Channel A balun in a single-ended fashion. The default configuration

of the evaluation board is for single-ended operation. The OUTB+ and

OUTB− output SMAs are used to load the Channel B balun in a single-

ended fashion. The default configuration of the evaluation board is for

single-ended operation.

T3 and T4 are 3:1 impedance ratio transformers used to transform a 50 Ω,

single-ended output into a 150 Ω balanced differential load.

C40 to C43 are used for ac coupling. C44 and C45 are balun decoupling

capacitors.

R69 to R76 are provided for generic placement of matching components.

By removing R79 and R80 and installing 0 Ω at R81 and R82, the output is

converted to a differential output. L1 to L4 provide dc bias to the output

stages. R67 and R68 provide a connection to the 5 V power plane.

Optionally, R67 and R68 can be removed and the output stage biased

through the VXA and VXB terminals.

OUTA+ (SMA connector) installed

OUTA− (SMA connector) installed

OUTB+ (SMA connector) installed

OUTB− (SMA connector) installed

T3, T4 = TC3-1T+ (mini-circuits)

C36 to C45 = 0.1 µF (Size 0603)

R63 to R72, R77 to R80 = 0 Ω

(Size 0402)

R73 to R76, R81, R82 = open

L1, L2, L3, L4 = 1 µH (Size 0805)

VXA, VXB (test loop) installed

P1, P2, PWUPA, PWUPB,

R30

Power-up interface. The ADL5202 is powered up by applying a logic high

(1.4 V ≤ PWUPA/PWUPB ≤ 3.3 V) to PWUPA and PWUPB from an external

source or by installing a shunt between Pin1 and Pin 2 of P1 andP2.

P1 installed for enable

P2 installed for enable

PWUPA (SMA connector) installed

PWUPB (SMA connector) installed

R30 = open

A0 to A5, B0 to B5,

LATCHA, LATCHB, PM,

MODE0, MODE1

R10 to R19, R31 to R62,

R84 to R87,

C28 to C35, C47 to C50

Gain control interface. All of the gain control functions are fully controlled

via the USB microcontroller by using the supplied software. Three-pin

headers allow for manual operation of the gain control, if desired.

The R31 to R34, R45, R46, R53, R54, and R84 to R87 resistors and the C28 to

C35 and C47 to C50 capacitors allow for the generic placement of filter

components.

The R10 to R19, R31 to R62, and R84 to R87 resistors isolate the gain control

pins from the microcontroller and provide current limiting.

A0 to A5 (3-pin header) installed

B0 to B5 (3-pin header) installed

LATCHA (3-pin header) installed

LATCHB (3-pin header) installed

MODE0 (3-pin header) installed

MODE1 (3-pin header) installed

PM (3-pin header) installed

R10 to R19 = 1 kΩ (Size 0603)

R35 to R44 = 1 kΩ (Size 0603)

R47 to R52 1 kΩ (Size 0603)

R55 to R62 1 kΩ (Size 0603)

R31 to R34 = open

R45, R46 = open

R53, R54 = open

R84 to R87 = open

C28 to C35 = open

C47 to C50 = open