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參數資料
| 型號： | TSA5518M |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | XO, clock |
| 英文描述： | 1.3 GHz bidirectional I2C-bus controlled synthesizer |
| 中文描述： | PLL FREQUENCY SYNTHESIZER, 1300 MHz, PDSO20 |
| 封裝： | 4.40 MM, PLASTIC, SOT-266-1, SSOP-20 |
| 文件頁數： | 5/20頁 |
| 文件大?。?/td> | 161K |
| 代理商： | TSA5518M |
1997 Mar 07
5
Philips Semiconductors
Product specification
1.3 GHz bidirectional I
2
C-bus controlled
synthesizer
TSA5518M
Table 1
Write data format
Table 2
Explanation of Table 1
BYTE
DESCRIPTION
MS
B
LSB
ACKNOWLEDGE
1
2
3
4
5
address
programmable divider
programmable divider
charge-pump, bandswitch and test bits 1
output ports control bits
1
0
N7
1
N14 N13 N12 N11
N6
N5
CP
T1
P6
P5
0
0
0
MA1 MA0 0
N10
N9
N2
N1
BSC B1
X
P2
LOW from device
LOW from device
LOW from device
LOW from device
LOW from device
N8
N0
OS
P0
N4
T0
P4
N3
B0
P1
P7
BIT
DESCRIPTION
MA1, MA0
N14, .. , N0
programmable address bits (see Table 7)
programmable divider bits
N = N14
×
2
14
+ N13
×
2
13
+...+ N1
×
2
1
+ N0
charge pump current
CP = 0 to 50
μ
A; CP = 1 to 220
μ
A
T1 = 0, T0 = 0, OS = 0: normal operation
T1 = 1: P2 = f
DIV
, P6 = f
ref
T0 = 1: 3-state charge pump
OS = 1: operational amplifier output is switched off (varicap drive disable)
bandswitch control bit
BSC = 0: bandswitch output is controlled by B1 and B0 bits according to Table 3
BSC = 1: bandswitch output is controlled by P7, P5 and P4 bits according to Table 4
bandswitch control bits
P6, P2 .. P0 = 1: open-collector outputs are active
P6, P2 .. P0 = 0: outputs are in high impedance state
P4, P5 and P7 = 1: outputs are at low level
P4, P5 and P7 = 0: emitter follower outputs are active
don’t care
CP
T1, T0, OS
BSC
B1, B0
P6, P2, P1 and P0
P4, P5 and P7
X
Table 3
BS output control (BSC = 0)
B1
B0
VOLTAGE ON PIN BS
0
0
1
1
0
1
0
1
0.25 V
2 V
4 V
V
CC
Table 4
BS output control (BSC = 1)
P7
P5
P4
VOLTAGE ON PIN BS
1
1
0
1
0
1
0
1
1
0.25 V
2 V
4 V
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