CC2531 Datasheet, PDF (6/32 Pages) Texas Instruments – A USB Enabled System-On-Chip Solution for 2.4-GHz IEEE 802.15.4 and ZigBee Applications

CC2531
SWRS086 – SEPTEMBER 2009 ........................................................................................................................................................................................ www.ti.com
RF TRANSMIT SECTION
Measured on Texas Instruments CC2530 EM reference design with T_A = 25°C, V_DD = 3 V and f_c = 2440 MHz, unless
otherwise noted.
Boldface limits apply over the entire operating range, T_A = –40°C to 125°C, V_DD = 2 V to 3.6 V and f_c = 2394 MHz to 2507
MHz.
PARAMETER
Nominal output power
Programmable output power
range
Spurious emissions
Measured conducted
according to stated
regulations. Only largest
spurious emission stated
within each band.
TEST CONDITIONS
Delivered to a single-ended 50-Ω load through a balun using
maximum-recommended output-power setting
[1] requires minimum –3 dBm
Max recommended output power setting⁽¹⁾
25 MHz–1000 MHz (outside restricted bands)
25 MHz–2400 MHz (within FCC restricted bands)
25 MHz–1000 MHz (within ETSI restricted bands)
1800–1900 MHz (ETSI restricted band)
5150–5300 MHz (ETSI restricted band)
At 2 × f_c and 3 × f_c (FCC restricted band)
At 2 × f_c and 3 × f_c (ETSI EN 300-440 and EN 300-328)⁽²⁾
1 GHz–12.75 GHz (outside restricted bands)
At 2483.5 MHz and above (FCC restricted band)
f_c= 2480 MHz⁽³⁾
Error vector magnitude (EVM)
Optimum load impedance
Measured as defined by [1] using maximum-recommended
output-power setting
[1] requires maximum 35%.
Differential impedance as seen from the RF port (RF_P and RF_N)
towards the antenna
MIN
TYP MAX
0
4.5
8
–8
10
32
–60
–60
–60
–57
–55
–42
–31
–53
–42
2%
69 + j29
UNIT
dBm
dB
dBm
Ω
(1) Texas Instruments CC2530 EM reference design is suitable for systems targeting compliance with EN 300 328, EN 300 440, FCC
CFR47 Part 15 and ARIB STD-T-66.
(2) Margins for passing conducted requirements at the third harmonic can be improved by using a simple band-pass filter connected
between matching network and RF connector (1.8 pF in parallel with 1.6 nH); this filter must be connected to a good RF ground.
(3) Margins for passing FCC requirements at 2483.5 MHz and above when transmitting at 2480 MHz can be improved by using a lower
output-power setting or having less than 100% duty cycle.
6
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