AK2401 Datasheet, PDF (16/103 Pages) Asahi Kasei Microsystems – Direct Conversion Transceiver

[AK2401]
10. Analog Characteristics
Refer to “13.2 Operation Mode Setting” for settings of each operation mode (xxx Mode).
Specifications that are guaranteed by design are not tested.
10.1. Receiving Characteristics
(VDD1= 2.7 ~ 3.3V, DACVDD= CPVDD= 2.7 ~ 5.5V, DVDD= 2.7 ~ 3.3V, Ta= -40 ~ 85ºC,
LNA Input=MIXER RF Input=450MHz, LOIN Input=900MHz, <Address0x12>DIVSEL[1:0] bit=“01”
(Divide by 2), Normal Gain Mode; Unless otherwise specified)
10.1.1. LNA
Parameter
Min. Typ. Max. Unit Description
Operating Frequency Range
30
1200 MHz
Gain
Normal Power Mode 12
15
18
dB
Normal Gain Mode
Low Power Mode
12
15
18
dB
Normal Power Mode 3
6
9
dB _{Low Gain Mode}
Low Power Mode
3
6
9
dB ^{LNA Input=-10dBm}
Normal Power Mode
Noise Figure
Low Power Mode
1.2
1.8
dB
Guaranteed by Design
1.2
1.8
dB
Normal Power Mode 2
7
IIP3
Low Power Mode
-7
-2
dBm
dBm
450.025MHz &
450.047MHz Input
Observed 450.003MHz
10.1.2. MIXER+PGA+AAF+ADC
I channel and Q channel are specified independently.
Maximum PGA Gain:
I Channel: <Address0x15>PGAGAIN_I[5:0] bit=“000000”(+28dB)
Q Channel: <Address0x16>PGAGAIN_Q[5:0] bit=“000000”(+28dB)
Middle PGA Gain:
I Channel: <Address0x15>PGAGAIN_I[5:0] bit= “011100”(0dB)
Q Channel: <Address0x16>PGAGAIN_Q[5:0] bit= “011100”(0dB)
Minimum PGA Gain:
I Channel: <Address0x15>PGAGAIN_I[5:0] bit=“110000”(-20dB)
Q Channel: <Address0x16>PGAGAIN_Q[5:0] bit=“110000”(-20dB)
Parameter
Min.
Operating Frequency Range
30
Max. Gain
Normal Power Mode
Low Power Mode
Min. Gain
Normal Power Mode
Low Power Mode
Gain Control Range
Gain Control Step
0.7
Normal Power Mode
Noise Figure
Low Power Mode
Typ.
42
41
-6
-7
48
1
16
17
Max.
1200
1.3
20
21
Unit
MHz
dB
dB
dB
dB
dB
dB
dB
dB
Description
Maximum PGA Gain
* 10
017003093-E-00
16
2017/3