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參數(shù)資料
| 型號(hào)： | SA9025 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | 900 MHz transmit modulator and 2.2 GHz fractional-N synthesizer |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PQFP48 |
| 封裝： | 7 X 7 X 1.40 MM, PLASTIC, LQFP-48 |
| 文件頁數(shù)： | 16/23頁 |
| 文件大?。?/td> | 134K |
| 代理商： | SA9025 |
Philips Semiconductors
Objective specification
SA9025
900 MHz transmit modulator and 2.2 GHz
fractional–N synthesizer
1997 Aug 01
16
Table 3.
Main and auxiliary chargepump currents
CP1
CP0
I
PHA
I
PHP
I
PHP–SU
I
PHI_SU
0
0
1.5xlset
3xIset
15xlset
36xlset
0
1
0.5xlset
1xlset
5xlset
12xlset
1
0
1.5xlset
3xlset
15xlset
0
1
1
0.5xlset
1xlset
5xlset
0
NOTES
1. I
SET
= Vset/RN; bias current for charge pumps.
2. CP1 is used to disable the PHI pump.
3. Iphp_su is the total current out of PHP in speedup mode.
D word, length 24 bits
Address
Power Control
M
divider
SE
TM
AD
Sleep
Mode
Test pa_current
1
1
0
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
M1
M0
SE
TM
AD
SM1
SM2
pai5
pai4
pai3
pai2
pai1
pai0
Default:
x
x
x
x
x
x
x
x
0
0
0
0
0
0
0
0
0
0
0
0
0
D0 word select
Fixed to 110.
Output Power Control
PC7(msb)...PC0(Isb)
Provides output power attenuation for DUAL mode amplifier outputs in 0.18 dB steps, Fx = 45.9 dB.
M Divider
00 = 6, 01 = 7, 10 = 8, 11 = 9
Offset loop power down
SE Offset loop synthesizer power down, SE = 1 power on, SE = 0 power down (sleep mode).
DUAL mode select
TM = 0 DUALmode
AMPS/DAMPS mode select
AD = 1
AD = 0
DAMPS mode.
AMPs mode
TX buffers power down
SM1
SM2
TX Local oscillator buffers power down. SM1 = 1 power on, SM1 = 0 to power down.
RCLK buffer power down. SM2 = 1 power on, SM2 = 0 to power down.
Test: pa_current:pai
TX test bits for controlling the current in the power amp. Should be 0 during normal operation.
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