RF2948B RF Micro Devices, RF2948B Datasheet - Page 16

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

11-254
RF2948B
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
14.0
13.0
12.0
11.0
10.0
-10.0
-12.0
-14.0
-16.0
-18.0
-20.0
-22.0
-24.0
-26.0
-1.0
-2.0
-3.0
-4.0
-5.0
-6.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
-2.0
-4.0
-6.0
-8.0
0.0
-30.0
-26.0
0.2
Upconverter Voltage Gain versus V
Amplitude and Temp
Upconverter Output P1dB versus RF LO Amplitude and Temp
Modulator Amplitude Error and Image Suppression versus IF LO
-26.0
0.4
Gain, 2.7V
Gain, 3V
Gain, 3.3V
(
TX IF IN=374MHz @ -35dBm, RF LO=2068MHz @ -5dBm)
V
-22.0
Ampl.Err, 25°C
Ampl. Err, 85°C
Ampl. Err, -40°C
Image Supp, 25°C
Image Supp, 85°C
Image Supp, -40°C
CC
=3V; TX V
0.6
-22.0
-18.0
0.8
-18.0
GC
(V
LO Amplitude (dBm)
=1.6V; TX IF IN=374MHz, RF LO=2068MHz)
CC
1.0
-14.0
LO Amplitude (dBm)
=3V; IF LO=748MHz; IQ IN=1MHz @ 100mV
-14.0
TX V
1.2
-10.0
GC
-10.0
(V
1.4
DC
)
-6.0
-6.0
1.6
GC
and V
1.8
-2.0
-2.0
CC
OP1dB, 25°C
OP1dB, 85°C
OP1dB, -40°C
2.0
(
Temp=25
2.0
2.0
2.2
P-P
6.0
)
o
C;
6.0
60.0
54.0
48.0
42.0
36.0
30.0
24.0
18.0
12.0
6.0
0.0
2.4
28.0
27.5
27.0
26.5
26.0
25.5
25.0
24.5
24.0
23.5
23.0
-10.0
-12.0
-14.0
-16.0
-18.0
-20.0
-22.0
-10.0
-2.0
-4.0
-6.0
-8.0
-2.0
-2.5
-3.0
-3.5
-4.0
-4.5
-5.0
-5.5
-6.0
-6.5
-7.0
-7.5
-8.0
-8.5
-9.0
-9.5
8.0
6.0
4.0
2.0
0.0
-30.0
-26.0
0.2
Modulator LO Suppression versus IF LO Amplitude and Temp
Upconverter Output P1dB versus V
Upconverter Voltage Gain versus RF LO Amplitude and Temp
(
V
CC
=3V; TX V
-26.0
0.4
OP1dB, 2.7V
OP1dB, 3V
OP1dB, 3.3V
LO Supp, 25°C
LO Supp, 85°C
LO Supp, -40°C
-22.0
(
V
CC
0.6
TX IF IN=374MHz, RF LO=2068MHz @ -5dBm)
-22.0
=3V; IF LO=748MHz; IQ IN=1 MHz @ 100mV
GC
-18.0
=1.6V; TX IF IN=374MHz@-35dBm, RF LO=2068MHz)
0.8
-18.0
LO Amplitude (dBm)
-14.0
1.0
LO Ampl (dBm)
TX V
-14.0
1.2
-10.0
GC
-10.0
(V
1.4
DC
)
-6.0
1.6
GC
-6.0
and V
1.8
-2.0
-2.0
CC
Rev A6 040930
2.0
Gain, 25°C
Gain, 85°C
Gain, -40°C
P-P
(
Temp=25
)
2.0
2.0
2.2
o
6.0
6.0
C;
2.4