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CC2544_16 Datasheet, PDF (6/29 Pages) Texas Instruments – System-on-Chip for 2.4-GHz USB Applications | |||
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CC2544
SWRS103D â JUNE 2011 â REVISED MAY 2012
www.ti.com
RF RECEIVE SECTION (continued)
Measured on Texas Instruments CC2544EM reference design with TA = 25°C, VDD = 3.3 V, VBUS tied to 5 V, and fC = 2440
MHz, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
250 kbps, GFSK, 160-kHz Deviation, 0.1% BER
Receiver sensitivity
Saturation (7)
-95
dBm
5
dBm
Co-channel rejection
Wanted signal at â67 dBm
-9
dB
±2-MHz offset, wanted signal â67 dBm
31
±4-MHz offset, wanted signal â67 dBm
In-band blocking rejection
±6-MHz offset, wanted signal â67 dBm
31
dB
55
>12-MHz offset, wanted signal â67 dBm
53
Frequency error
tolerance (8)
Including both initial tolerance and drift. Sensitivity better
than â70 dBm. 250-byte payload
â150
150
kHz
Symbol-rate error
tolerance (9)
Sensitivity better than â70 dBm. 250-byte payload
â60
60
ppm
250 kbps, MSK, 0.1% BER
Receiver sensitivity
Saturation (7)
â95
dBm
5
dBm
Co-channel rejection
Wanted signal at â67 dBm
â5
dB
±2-MHz offset, wanted signal â67 dBm
31
±4-MHz offset, wanted signal â67 dBm
In-band blocking rejection
±6-MHz offset, wanted signal â67 dBm
31
dB
45
>12-MHz offset, wanted signal â67 dBm
54
Frequency error
tolerance (8)
Including both initial tolerance and drift. Sensitivity better
than â70 dBm. 250-byte payload
â150
150
kHz
Symbol-rate error
tolerance (9)
Sensitivity better than â70 dBm. 250-byte payload
â60
60
ppm
ALL RATES/FORMATS
Spurious emission in RX.
Conducted measurement
f < 1 GHz
â67
dBm
Spurious emission in RX.
Conducted measurement
f > 1 GHz
â57
dBm
(7) AGC enabled
(8) Difference between center frequency of the received RF signal and local oscillator frequency
(9) Difference between incoming symbol rate and the internally generated symbol rate
RF TRANSMIT SECTION
Measured on Texas Instruments CC2544EM reference design with TA = 25°C, VDD = 3.3 V, VBUS tied to 5 V, and fC = 2440
MHz, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Output power, maximum
setting
Delivered to a single-ended 50-Ω load through a balun
using maximum recommended output power setting.
4
dBm
Output power, minimum
setting
Delivered to a single-ended 50-Ω load through a balun
using minimum recommended output power setting.
â20
dBm
Programmable output power
range
Delivered to a single-ended 50-Ω load through a balun.
24
dB
Spurious emission in TX.
Conducted measurement.
f < 1 GHz
â46
dBm
Spurious emission in TX.
Conducted measurement.
f > 1 GHz
â44
dBm
Optimum load impedance
Differential impedance as seen from the RF port (RF_P
and RF_N) toward the antenna
70 + j30
Ω
6
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