uaa3515a NXP Semiconductors, uaa3515a Datasheet - Page 25

• Manufacturer Part Number: uaa3515a
• Description: 900 Mhz Analog Cordless Telephone Ic
• Manufacturer: NXP Semiconductors

Philips Semiconductors
7.9.7
When the LBD active register = 1, the low battery detector is enabled and the signal BDout passes to the output CDLBD.
If V
default value is 110.
Table 13 LBD level register
7.9.8
The power amplifier output register has two bits to modify the output power and one bit to disable the power amplifier
(PA output bit 2 = 0). Duplexer matching (300
network. Output power on 50
removed. At maximum power, 3 mA extra DC current is consumed compared with the current at the minimum power
settings.
Table 14 PA output register
7.9.9
Performance of the PLLs can be improved by increasing charge pump current. Then a programmable current on both
RX and TX charge pump can be programmed. RX and TX charge pump currents are programmed independently. When
the RX or TX charge pump current register = 0, charge pump current is 400 A; when it is set to 1, charge pump current
is 800 A.
2002 Sep 09
900 MHz analog cordless telephone IC
BIT 2
BIT 2
CC
0
0
0
0
1
1
1
1
0
1
1
1
1
is below the programmed LBD level, CDLBD = 0; if not below the programmed level, CDLBD = 1. The power-up
L
P
PLL
OW
OWER AMPLIFIER OUTPUT LEVEL
-
BIT 1
BIT 1
CHARGE PUMP CURRENT
BATTERY DETECTION
X
0
0
1
1
0
0
1
1
0
0
1
1
BIT 0
BIT 0
X
0
1
0
1
0
1
0
1
0
1
0
1
is specified in Table 14. To get power on the antenna, duplexer insertion loss should be
SELECT
SELECT
0
1
2
3
4
5
6
7
0
1
2
3
POWER (dBm)
PA OUTPUT
PA inactive
to 50
LOW BATTERY VOLTAGE DETECTION; NOMINAL VALUE (V)
1.0
1.9
2.5
3.1
is performed using a parallel inductive/series capacitive
25
2nd HARMONIC
(dBm)
17
19
23
23
3.5
3.4
3.3
3.2
3.1
3.0
2.9
2.8
3rd HARMONIC
(dBm)
327
29
33
36
Product specification
UAA3515A
4th HARMONIC
(dBm)
34
34
36
40