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CC256X Datasheet, PDF (32/51 Pages) Texas Instruments – Bluetooth® Smart Ready Controller | |||
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CC256x
SWRS121C â JULY 2012 â REVISED OCTOBER 2013
www.ti.com
4.2 Bluetooth BR/EDR RF Performance
All parameters in this section that are fast-clock dependent are verified using a 26-MHz XTAL under a
temperature range from â20°C to 70°C and an RF load of 50 Ω at the BT_RF port of the IC.
4.2.1 Bluetooth ReceiverâIn-Band Signals
Characteristics
Operation frequency range
Channel spacing
Input impedance
Sensitivity, dirty TX on(1)
BER error floor at sensitivity +
10 dB, dirty TX off
Maximum usable input power
Intermodulation characteristics
C/I performance(2)
Image = â1 MHz
RF return loss
RX mode LO leakage
Condition
GFSK, BER = 0.1%
Pi/4-DQPSK, BER = 0.01%
8DPSK, BER = 0.01%
Pi/4-DQPSK
8DPSK
GFSK, BER = 0.1%
Pi/4-DQPSK, BER = 0.1%
8DPSK, BER = 0.1%
Level of interferers
For n = 3, 4, and 5
GFSK, co-channel
EDR, co-channel
GFSK, adjacent ±1 MHz
EDR, adjacent ±1 MHz, (image)
GFSK, adjacent +2 MHz
EDR, adjacent, +2 MHz,
GFSK, adjacent â2 MHz
EDR, adjacent â2 MHz
GFSK, adjacent ⥠|±3| MHz
EDR, adjacent ⥠|±3| MHz
Pi/4-DQPSK
8DPSK
Pi/4-DQPSK
8DPSK
Pi/4-DQPSK
8DPSK
Pi/4-DQPSK
8DPSK
Pi/4-DQPSK
8DPSK
Frf = (received RF frequency â 0.6 MHz)
Min
2402
â91.5
â90.5
â81
1Eâ6
1Eâ6
â5
â10
â10
â36
Typ
1
50
â95
â94.5
â87.5
1Eâ7
Max
2480
Bluetooth
Specification
â70
â70
â70
1Eâ5
1Eâ5
â20
Unit
MHz
MHz
â¦
dBm
dBm
â30
â39
dBm
8
10
11
9.5
11
13
16.5
20
21
â10
â5
0
â10
â5
0
â5
â1
5
â38
â35
â30
â38
â35
â30
dB
â38
â30
â25
â28
â20
â20
â28
â20
â20
â22
â13
â13
â45
â43
â40
â45
â43
â40
â44
â36
â33
â10
dB
â63
â58
dBm
(1) Sensitivity degradation up to 3 dB may occur for minimum and typical values where the Bluetooth frequency is a harmonic of the fast
clock.
(2) Numbers show desired-signal to interfering-signal ratio. Smaller numbers indicate better C/I performance.
4.2.2 Bluetooth ReceiverâGeneral Blocking
Characteristics
Condition
Blocking performance over full range, according to Bluetooth 30 to 2000 MHz
specification (1)
2000 to 2399 MHz
2484 to 3000 MHz
3 to 12.75 GHz
(1) Exceptions are taken out of the total 24 allowed in the Bluetooth specification.
Min
Typ
Unit
â6
â6
dBm
â6
â6
32
Device Specifications
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