RF112 datasheet(17/45 Pages) NXP

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3.3.2 Rx BB interface

The Rx BB output shall be connected to the ADC input in the baseband chip as shown in

below:

BUF

PCB

TRX

ADC

agnd

vlnp

vcmout

vinn

RESD

RFSD

Ron

Rin_on

Rcm2

Rcm3

RESD

CINFIX

CINSW

CINFIX

RXBB_OUT_I_P

avdd

Sampling

Capacitor

Sampling

Capacitor

Sampling

Switch

Sampling

Switch

agnd

RXBB_OUT_I_N

Figure 7. Connection of Rx BB output of transceiver chip (TRX) to ADC input of

baseband chip (BB). Note that Rcm2 and Rcm3 shall be disconnected, input common

mode voltage of the ADC is set by the Rx BB output buffer.

This table shows receiver specification. All RF signal levels are referred to the input of an

ideal matching network with no losses.

Table 4. Receiver specification

Parameter

Conditions

Min

Typ

Max

Unit

RX input

impedance

HB and LB,

differential,

including matching

RX input return

loss, |S11|

HB and LB, all gain

settings, including

matching

>10

Noise figure

Maximum gain setting All channel bandwidths RMS value over all subcarrier freq

4900 MHz

4.5

5300 MHz

4.9

6000 MHz

5.4

2400-2500 MHz

4.4

Max input signal

level

Minimum gain

RMS power of

OFDM burst where

EVM ≤ -32 dB

-20

-10

dBm

RX1, RX2, RO1,

and RO2 EVM

RMS value over all subcarriers. All values are applicable at both -40 dBm and -23 dBm. Ideal IQ

correction and demodulation (data-aided equalization enabled).

Over process, voltage and temp (PVT):

Table continues on the next page...

Electrical characteristics

RF112 Transceiver Data Sheet, Rev. 1 Draft B, 05/2024

NXP Semiconductors

RF112 Datasheet(PDF) 17 Page - NXP Semiconductors

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