參數(shù)資料
型號： SA2400A
廠商： NXP Semiconductors N.V.
英文描述： Single chip transceiver for 2.45 GHz ISM band
中文描述： 單為2.45 GHz的ISM頻帶收發(fā)器芯片
文件頁數(shù)： 11/34頁
文件大?。?/td> 325K
代理商： SA2400A
Philips Semiconductors
Product data
SA2400A
Single chip transceiver for 2.45 GHz ISM band
2002 Nov 04
11
Specification
Units
Max
Typ
Min
Conditions
LO leakage to antenna
All gain modes. Incl balun
–
–75
–57
dBm
Residual sideband Rejection
Measured with single tone at 2 MHz offset from
carrier. Includes both IQ gain and phase error.
Notes 3, 7.
22
29
–
dB
Ripple band width of filter
Note 4.
5.6
6.3
7.0
MHz
3 dB band width of filter
Indicative, not tested.
Note 4.
–
7
–
MHz
In-band amplitude ripple
DC to ripple band width edge.
Note 3.
–
–
0.6
dB peak
Out-of-band attenuation
Relative to minimum in-band gain
> 11 MHz
> 22 MHz
25
55
–
–
–
–
dB
dB
Lower 3 dB cut-off frequency of AC
coupling
Cascade of two 1st order high-pass filters.
a) NARROW BAND
b) INTERMEDIATE BAND
c) WIDE BAND
–
–
–
10
100
1000
–
–
–
kHz
kHz
kHz
Output load resistance
Pin to GND, differential.
Note 5.
15
–
–
k
Output load capacitance
Pin to GND
–
–
6
pF
Nominal I & Q output voltage
Differential at the load specified.
Note 6.
–
0.5
–
V peak
Maximum I & Q output voltage
Saturated, differential
–
–
1.5
V peak
Common mode IQ voltage
Programmable (see 0x04)
Mode 1
Mode 2
V
CC
/2–0.25
1.0
V
CC
/2
1.25
V
CC
/2+0.25
1.5
V
V
1 dB compression level at output
1 MHz tone, differential. Maximum gain.
1
–
–
V peak
Total Harmonic Distortion
(measured at max and min gains)
Input 1 – 5 MHz signal, 1 V peak differential
sinusoidal at output, output spurs measured
differential up to 100 MHz. Ratio of rms total
spurious distortion to rms fundamental.
Receiver in minimum gain.
Note 3.
–
2
4
%
Receiver in maximum gain.
Note 3.
–
5
10
%
Phase Imbalance
Signal tone input at 2 MHz offset from carrier.
Indicative, not tested.
–
4
–
deg
I, /I to Q, /Q amplitude imbalance
ratio of signal at I pin to /I pin;
Same for Q and /Q pins.
–
0.1
–
dB
RSSI voltage in settled state
(internal AGC)
Corresponds to I, Q output signal levels when
AGC_RESET is used, with RF input
between –10 and –80 dBm.
1 MHz tone, 0.5 V peak differential.
ACGTARGET = 0
1.25
1.55
1.95
V
RSSI voltage difference
1 dB change in input power compared to
settled state
–
64.5
–
mV
RSSI minimum voltage
Signal power = –10 dBc
–
0.9
–
V
RSSI maximum output voltage
Signal power = +10 dBc
–
2.2
–
V
RSSI error
NOTES:
1. Corresponds to –15 dBm input level at IC input, assuming typical 5 dB loss from the antenna to the IC input. The AGCTARGET register
should be set to “+5” which causes the AGC to settle to an output amplitude greater than the specified nominal value. A resistive divider
network at the output can be used to adjust the actual IQ output levels to the BB ADC range.
2. Guaranteed by design.
3. Verified by bench characterization and found to have sufficient margin for production.
4. At power-up time, the filter bandwidth is undefined. It needs to be calibrated with the internal tuner (FCALIB mode).
5. For unsymmetrical loading, attach the same load impedance to the unused pin; condition: for 80% of nominal output voltage swing.
6. Nominal I/Q output levels are understood as the levels the SA2400A will settle to after an AGCRESET action is performed with an RF input
signal modulated by a Barker sequence, and with AGCTARGET = 0.
7. RSB = 20*log(sqrt([1+K
2
+ 2Kcos
]/[1+K
2
– 2Kcos
])), where K = linear gain imbalance, and
= phase imbalance.
–10 dBc < signal power < +10 dBc
–
±
1
–
dB
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