Data Sheet
Page 53
nRF51822 Product Specification v3.1
Table 39 Receiver specifications
250 kbps
C/I
CO
C/I co-channel. 4 dB 2
C/I
1ST
1
st
ACS, C/I 1 MHz.
-10 dB 2
C/I
2ND
2
nd
ACS, C/I 2 MHz.
-34 dB 2
C/I
3RD
3
rd
ACS, C/I 3 MHz.
-39 dB 2
C/I
6th
6
th
ACS, C/I f
i
> 6 MHz.
-50 dB 2
C/I
12th
12
th
ACS, C/I 12 MHz.
-55 dB 2
C/I
Nth
N
th
ACS, C/I f
i
> 25 MHz.
-60 dB 2
Bluetooth Low Energy RX selectivity
C/I
CO
C/I co-channel. 10 dB 2
C/I
1ST
1
st
ACS, C/I 1 MHz.
1 dB 2
C/I
2ND
2
nd
ACS, C/I 2 MHz.
-25 dB 2
C/I
3+N
ACS, C/I (3+n) MHz offset [n = 0, 1, 2, . . .]. -51 dB 2
C/I
Image
lmage blocking level. -30 dB 2
C/I
Image±1MHz
Adjacent channel to image blocking level (±1 MHz). -31 dB 2
RX intermodulation
3
P_IMD
2Mbps
IMD performance, 2 Mbps,
3rd, 4th, and 5th offset channel.
-41 dBm 2
P_IMD
1Mbps
IMD performance, 1 Mbps,
3rd, 4th, and 5th offset channel.
-40 dBm 2
P_IMD
250kbps
IMD performance, 250 kbps,
3rd, 4th, and 5th offset channel.
-36 dBm 2
P_IMD
BLE
IMD performance, 1 Mbps BLE,
3rd, 4th, and 5th offset channel.
-39 dBm 2
1. As defined in the Bluetooth Core Specification v4.0 Volume 6: Core System Package (Low Energy Controller Volume).
2. Wanted signal level at P
IN
= -67 dBm. One interferer is used, having equal modulation as the wanted signal. The input
power of the interferer where the sensitivity equals BER = 0.1% is presented.
3. Wanted signal level at P
IN
= -64 dBm. Two interferers with equal input power are used. The interferer closest in fre-
quency is not modulated, the other interferer is modulated equal with the wanted signal. The input power of interferers
where the sensitivity equals BER = 0.1% is presented.
Symbol Description Min. Typ. Max. Units
Test
level