MLX71121KLQ-AAA-000-TU Datasheet MLX71121KLQ-AAA-000-TU, MLX71121KLQ-AAA-000-SP, MLX71121KLQ-AAA-000-RE | P16-P18

MLX71121

300 to 930MHz

FSK/OOK Receiver

39010 71121 Page 16 of 29 Data Sheet

Rev. 012 Mar/15

2.3 Standard Frequency Plans

IF2 = 1.8MHz

RFSEL f

[MHz] f

IF1

[MHz] f

LO1

[MHz] f

LO2

[MHz] f

[MHz]

315 107.40 422.40 105.60 17.600000

433.92 147.04 580.96 145.24 24.206667

868.3 288.23 580.07 290.03 24.169444

915 303.80 611.20 305.60 25.466667

2.4 433/868MHz Frequency Diversity

The receiver’s multi-band functionality can be used to operate at two different frequency bands just by

changing the logic level at pin RFSEL and without changing the crystal. This feature is applicable for com-

mon use of the 433 and 868MHz bands. Below table shows the corresponding frequency plans.

IF2 = 1.8MHz

RFSEL f

[MHz] f

IF1

[MHz] f

LO1

[MHz] f

LO2

[MHz] f

[MHz]

0 433.25 146.82 580.07 145.02

24.169444

1 868.3 288.23 580.07 290.03

MLX71121

300 to 930MHz

FSK/OOK Receiver

39010 71121 Page 17 of 29 Data Sheet

Rev. 012 Mar/15

3 Pin Definitions and Descriptions

Pin No. Name I/O Type Functional Schematic Description

3 LNAO1

analog

output

LNA output 1

1 LNAI1

analog

input

LNA input 1

2 VEE ground

negative supply voltage

4 MIXP

analog

input

MIX1 positive input

5 MIXN

analog

input

MIX1 negative input

6 LNAO2

analog

output

LNA output 2

8 LNAI2

analog

input

LNA input 2

7 VEE ground

negative supply voltage

9 VCC supply

positive supply voltage

10 MIXO

analog

output

not used

pin left open

mixer 2 output

11 VEE ground negative supply voltage

12 IFAP

analog

input

not used

pins left open

IF amplifier positive input

13 IFAN

analog

input

IF amplifier negative input

14 MODSEL

CMOS

input

modulation select input

Vbias

VEE

VCC

LNAO1

LNAI1

MIXP

VEE VEE

VCC

MIXN

Vbias

VEE

VCC

LNAO2

LNAI2

VEE

VCC VCC

MODSEL

400

MLX71121

300 to 930MHz

FSK/OOK Receiver

39010 71121 Page 18 of 29 Data Sheet

Rev. 012 Mar/15

Pin No. Name I/O Type Functional Schematic Description

15 SLCSEL

CMOS

input

slicer mode select input

16 DF2

analog

I/O

data filter connection 2

17 DF1

analog

I/O

data filter connection 1

18 DFO

analog

output

data filter output

19 SLC

analog

input

slicer reference input

20 PDP

analog

output

peak detector

positive output

21 PDN

analog

output

peak detector

negative output

VEE

VCC VCC

SLCSEL

400

VCC

VEE

VCC

DF2

400

VEE

DF1

400

100k

VCC

VEE

VCC VCC

DFO

400

VEE

VCC

SLC

400 100k

100k 100k

VEE

VCC VCC

PDP

400

VEE

VCC

PDN

400

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24 P25-P27 P28-P29

MLX71121KLQ-AAA-000-TU

Mfr. #:

Buy MLX71121KLQ-AAA-000-TU

Manufacturer:

Melexis

Description:

RF Receiver 300 to 930MHz FSK/ASK Receiver fixed frequency, antenna diversity 0

Lifecycle:

New from this manufacturer.

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MLX71121KLQ-AAA-000-TU

MLX71121KLQ-AAA-000-TU

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