CHP2299
Table 5: Power Mode Truth Table (with NO AGC)
POWER MODE
Shut Down
PA ON
V
CC
V
REF
V
MODE
TYPICAL GAIN
<-40 dB
3.4
3.4
1.8
0 V(1)
2.85 V
2.85 V
0 V
>2.1 V
>2.1 V
27 dB
PA ON
24 dB
Notes:
1. VREF = 0V forces all currents to zero excluding the current of
VMODE pin. To shut down the VMODE current VMODE should be zero as well.
Using the AGC Option
If the analog gain control (AGC) option is needed,
then for a typical operation, Vmode can be defined
as a linear function of output power:
The following tables list the electrical performance,
of CHP2299 with AGC option as well as the power
mode truth table.
VMODE = 1.5 V + 0.025* POUT(dBm)
Table 6: Operating Ranges (with AGC)
PARAMETER
MIN
1920
+3.2
+2.8
TYP
-
MAX
1980
+4.2
+2.9
UNIT
MHz
V
COMMENTS
Operating Frequency (f)
Supply Voltage (VCC
Reference Voltage (VREF
Mode Control Voltage (VMODE
Operating Temperature (T
)
+3.4
+2.85
)
V
)
+1.1
-25
-
+2.1
+85
V
effective range with AGC(1)
C
)
+25
°C
The device may be operated safely over these conditions; however, parametric performance is guaranteed
only over the conditions defined in the electrical specifications.
Notes:
(1) Gain and idle current for VMODE less than VMODE are the same as that of VMODE = VMODEMin. Also the Gain and idle
Min
current for VMODE higher than VMODEMax are the same as that of VMODE = VMODE
.
Max
Figure 2: Idle Current vs. VMODE
Iq
Min
Max
VMODE
PRELIMINARY DATA SHEET - Rev 1.2
5
02/2004
ANADIGICS [ ANADIGICS, INC ]
