RF2948B RF Micro Devices, RF2948B Datasheet - Page 15

• Manufacturer Part Number: RF2948B
• Description: 2.4GHz SPREAD-SPECTRUM TRANSCEIVER
• Manufacturer: RF Micro Devices

Rev A6 040930
75.00
70.00
65.00
60.00
55.00
50.00
45.00
40.00
35.00
30.00
25.00
20.00
15.00
10.00
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
30.0
25.0
20.0
15.0
10.0
-5.00
5.00
0.00
5.0
0.0
-30.0
1.0
1.20
IN=375MHz; I and Q out ∼ 300mV
(V
RX IQ Amplitude and Phase Error versus IF LO Amplitude and Temp
RX 3dB BW versus R
RX Voltage Gain versus V
CC
=3V; RX V
-25.0
1.30
GC
RX IF
=1.6V; RX IF IN=375MHz, I&Q OUT~650mV
-20.0
1.40
IN
=-67dBm, IF LO=560MHz@-10dBm)
10.0
LO Amplitude (dBm)
1.50
-15.0
BW
RX V
R
(Temp=Ambient, V
BW
GC
1.60
GC
[kΩ]
-10.0
and V
P-P
(V
DC
IF LO=748MHz @ -10dBm)
)
1.70
100.0
CC
-5.0
(Temp=25
CC
=3.15V, V
1.80
Ampl. Err, 25°C
Ampl. Err, 85°C
Ampl. Err, -40°C
Phase Err, 25°C
Phase Err, 85°C
Phase Err, -40°C
P-P
; IF LO=748MHz)
0.0
Gain, 2.7V
Gain, 3V
Gain, 3.3V
o
GC
1.90
C; RX IF
=1.6V,
5.0
1000.0
2.00
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
41.5
41.0
40.5
40.0
39.5
39.0
38.5
38.0
37.5
37.0
36.5
1400.0
1350.0
1300.0
1250.0
1200.0
1150.0
1100.0
1050.0
1000.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
950.0
900.0
850.0
800.0
750.0
700.0
650.0
600.0
5.0
0.0
-30.0
TX 3dB BW Point versus R
1.0
V
1.2
RX Gain versus IF LO Amplitude and Temp
GC
RX OP1dB versus VGC and Temp (
=1.6V; RX IF IN=375MHz, I and Q OUT~650mV
Gain, 25°C
Gain, 85°C
Gain, -40°C
-25.0
1.3
V
CC
=3.15V, GCTX=1.5V, I&Qin=100mV
-20.0
MHz; IF LO = 748 MHz at -10 dBm)
1.4
10.0
LO Ampl. (dBm)
1.5
-15.0
RX VGC (V
R
BW
BW
[kΩ]
1.6
(Broadband 50Ω match on IFOUT, Temp=Ambient,
-10.0
P-P
, IFLO=560MHz@-10dBm)
RF2948B
DC
)
1.7
100.0
V
-5.0
CC
P-P
= 3 V; RX IF
; IF LO=748MHz)
1.8
(V
0.0
CC
=3V; RX
1.9
IN
= 375
1000.0
5.0
11-253
2.0