AWR2944 datasheet(39/93 Pages) TI

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Table 8-4. Average Power Consumption at Power Terminals

PARAMETER

CONDITION(2)

DESCRIPTION

MIN

TYP(1)

MAX

UNIT

Average power consumption

in single chip mode.

3TX, 4RX

25% duty

cycle

Use Case: Regular mode, 37.5

Msps sampling rate, 25.6 ms frame

periodicity, 256 chirps, 256 samples/

chirp, 2-µs idle time, 7us ADC start

time and excess ramp time

Activity of cores :

•

70% MSS R5F

•

70% C66x DSP and HWA

•

50% ARM M4F

Ethernet and CAN-FD interface is

enabled for data transfer

1.47

50% duty

cycle

2.09

4TX, 4RX

25% duty

cycle

1.54

50% duty

cycle

2.25

(1)

The Power consumption numbers are for a typical usecase i.e. for a Nominal device at 25C ambient temperature and nominal voltage

conditions.

(2)

Frame duty cycle represents the ratio of Frame Active and Interframe time.

8.8 RF Specifications

over recommended operating conditions and with run time calibrations enabled (unless otherwise noted)

PARAMETER

MIN

TYP

MAX

UNIT

Receiver

Noise figure

1-dB compression point (Out Of Band)(1)

-11

dBm

Maximum gain

Gain range

Gain step size

IF bandwidth(2)

MHz

ADC sampling rate

37.5

Msps

ADC resolution

Bits

Return loss (S11)

-10

Gain mismatch variation (over temperature)

±0.5

Phase mismatch variation (over temperature)

±3

Idle Channel Spurs

-90

dBFS

Transmitter

Output power

dBm

Phase shifter accuracy

±5

Temperature sensor accuracy

±5

℃

Amplitude noise

-145

dBc/Hz

Clock subsystem

Frequency range

GHz

Ramp rate

250(3)

MHz/μs

Phase noise at 1-

MHz offset

76 to 77 GHz (VCO1)

-96

dBc/Hz

76 to 81 GHz (VCO2)

-95

(1)

1-dB Compression Point (Out Of Band) is measured by feeding a continuous wave tone at 5% of the programmed HPF cut-off

frequency (i.e. blocker tone) along with a second in-band tone. The compression point is determined by the blocker power that results

in a 1dB compression of the in-band tone at the RX ADC.

(2)

The analog IF stages include a second order high pass filter that can be configured to the following -6dB corner frequencies:

Available HPF Corner Frequencies (kHz)

HPF

300, 350, 700, 1400,

The filtering performed by the digital baseband chain is targeted to provide:

•

Less than ±0.5 dB pass-band ripple/droop, and

•

Better than 60 dB anti-aliasing attenuation for any frequency that can alias back into the pass-band.

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AWR2944

SWRS273 – NOVEMBER 2021

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