RF210(A/B)
Image-Reject Downconverter
Table 4. RF210(A/B) Electrical Specifications (2 of 2)
fIF Plo
A
(T = 25 C, Vcc = 3.0 V, = 400 MHz,
= –10 dBm)
Parameter
Test Condition
Min
Typical
42
Max
Units
DCS1800/PCS1900 Mode, BANDSEL = 1
Supply current:
Enable mode
Sleep mode
RF input frequency
IF frequency
ENA = 1
ENA = 0
mA
250
1990
450
µ
A
1805
350
1355
30
MHz
MHz
MHz
dB
400
LO frequency
1640
LO to RF input isolation
Input impedance
Gain:
LNA1800IN = 1900 MHz
40 – j10
Ω
High gain (RF210A and RF210B)
Low gain (8 dB attenuation, RF210A)
Low gain (16 dB attenuation, RF210B)
Gain variation vs. Frequency
GAINSEL = 0
GAINSEL = 1
GAINSEL = 1
19
11
3
dB
dB
dB
dB
dB
0.5
1
0.5
Gain step tracking error
Noise figure:
High gain (19 dB gain, RF210A and RF210B)
No blocker,
GAINSEL = 0
GAINSEL = 1
GAINSEL = 1
–22 dBm blocker,
GAINSEL = 0
3.5
9.0
15
4.5
11
16
dB
dB
dB
Low gain (11 dB gain, RF210A)
Low gain (3 dB gain, RF210B)
High gain (19 dB gain, RF210A and RF210B)
(Note 3)
4.1
dB
dBm
dBm
Ω
Input 1 dB compression point
Input third order intercept point
IF shunt resistance/side
–24
–17
400
500
–53
600
Spurious response (Note 2):
Interferer = –65 dBm
2(RF) x 2(LO) and 3(RF) x 3(LO)
dB
dB
Image rejection
35
Control Signals (All Modes)
Enable (ENA) and gain select (GAINSEL) input voltages:
IH
V
IL
V
1.9
V
V
0.8
Enable (ENA) and gain select (GAINSEL) input currents:
IH
I
IL
I
20
–1
100
0
µ
µ
A
A
–10
Enable time
15
15
µ
s
Bandselect switching time
µ
s
Note 1: Assumes 0 dBm @ 915 MHz blocker at the antenna input attenuated by 28 dB.
Note 2: The rejection is specified with respect to the desired signal gain.
Note 3: Assumes –12 dBm @ 1785 MHz blocker at the antenna input attenuated by 10 dB.
4
October 20, 1999
Conexant
100775A
Proprietary Information and Specifications are Subject to Change
CONEXANT [ CONEXANT SYSTEMS, INC ]
