Board Overview

The Companion Board is based around the LMS8001A RFIC, which shifts RF analog signals from one frequency range to another. Usually, the lower frequency range is designated as IF, while the higher frequency range is designated as RF.

A block diagram for LMS8001 Companion Board is presented in Figure 2.

LMS8001 Companion Block Diagram

Figure 2. LMS8001 Companion 3v2 block diagram.

Components

This section provides an overview of the main components on the LMS8001 Companion Board. A top view is shown in Figure 3 and reverse in Figure 4.

LMS8001 Companion Top View

Figure 3. LMS8001 Companion 3v2 top connectors and main components.

LMS8001 Companion Reverse View

Figure 4. LMS8001 Companion 3v2 reverse connectors and main components.

A description of the components is given in Table 1.

Table 1. LMS8001 Companion Board 3v2 components.

Board Reference

Type

Description

RF Block

U1

RF mixer

Lime Microsystems LMS8001A

J3

SMA

External LO signal connector

J4

SMA

CHDI connector

J5

UFL

CHAI connector

J6

UFL

CHBI connector

J7

SMA

CHCI connector

J8

SMA

CHAO connector

J9

SMA

CHBO connector

J10

UFL

CHCO connector

J11

UFL

CHDO connector

T1

4.5-3500 MHz balun

External LO signal balun, Minicircuits TC1-1-13M+

T2

3.5-11 GHz balun

CHCI balun, Minicircuits NCR2-113+

T3

3.5-11 GHz balun

CHDI balun, Minicircuits NCR2-113+

T5

4.5-3500 MHz balun

CHAI balun, Minicircuits TC1-1-13M+

T6

3.5-11 GHz balun

CHAO balun, Minicircuits NCR2-113+

T7

3.5-11 GHz balun

CHBO balun, Minicircuits NCR2-113+

T9

4.5-3500 MHz balun

CHBI balun, Minicircuits TC1-1-13M+

T11

4.5-3500 MHz balun

CHDO balun, Minicircuits TC1-1-13M+

T15

4.5-3500 MHz balun

CHCO balun, Minicircuits TC1-1-13M+

PLL Block

J13

UFL

External reference signal connector

U18

PLL

ADI ADF4002

U21

Clock buffer

Onsemi NB3H83905C

XO3

40 MHz VCO

Racon E6245LF

XO4

40 MHz VCO

Racon RTX5032A

LD6

LD indicator

Indicator of REF CLK signal (lock detected)

DC Supply Block

JP1

6 Pin header

Selection of 5V supply

J2

3 Pin header

EXT 5V connector

U4

3.3V LDO

LDO for 3.3 V

U5

1.3V LDO

LDO for 1.3 V

U6

1.8V LDO

LDO for 1.8 V

U7

3.3V LDO

LDO for 3.3 V

U8

1.45V_PLL LDO

LDO for PLL 1.45 V

U9

1.8V_PLL LDO

LDO for PLL 1.8 V

U10

1.8V_PLL LDO

LDO for PLL 1.8 V

U14

5V protection

U16

3.3V_CLKGEN LDO

LDO for PLL 3.3 V

LD5

LED indicator

Indicator of 5V signal

MCU and Communication Block

U3

MCU

STM32F105RBT6

U2

TSV protection

TSV protection for USB data lines

J1

USB type C

USB connector for communication and DC supply

X1

Ext. osc. for MCU

8 MHz crystal oscillator

SW1

MCU reset switch

SW2

MCU boot switch

P2

10 Pin header

GPIO lines

P3

10 Pin header

SPI and digital control signals

LD1

MCU LED

MCU programable indicator

LD2

MCU LED

MCU programable indicator

LD3

MCU LED

MCU programable indicator

LD4

LED indicator

Indicator of MCU DC power signal