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參數資料
| 型號： | TSA5527AM |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | XO, clock |
| 英文描述： | 1.3 GHz universal bus-controlled TV synthesizers |
| 中文描述： | PLL FREQUENCY SYNTHESIZER, 1300 MHz, PDSO16 |
| 封裝： | 4.40 MM, PLASTIC, SSOP-16 |
| 文件頁數： | 17/28頁 |
| 文件大小： | 290K |
| 代理商： | TSA5527AM |
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1996 Sep 24
17
Philips Semiconductors
Product specification
1.3 GHz universal bus-controlled
TV synthesizers
TSA5526; TSA5527
APPLICATION INFORMATION
Tuning amplifier
The tuning amplifier is capable of driving the varicap
voltage without an external transistor. The tuning voltage
output must be connected to an external load of 27 k
which is connected to the tuning voltage supply rail.
Figs 11 and 12 show a possible loop filter. The component
values depend on the oscillator characteristics and the
selected reference frequency.
Crystal oscillator
The crystal oscillator uses a 4 MHz crystal connected in
series with an 18 pF capacitor thereby operating in the
series resonance mode. Connecting the oscillator to the
supply voltage is preferred but it can, however, also be
connected to ground.
Examples of I
2
C-bus sequences (SW = LOW)
Tables 10 to 14 show the various sequences where f
osc
= 100 MHz, BS4 = ON, I
CP
= 280
μ
A, N = 512, f
xtal
= 4 MHz,
S = START, A = acknowledge and P = STOP. The sequence is as follows:
START + address byte + divider byte 1 + divider byte 2 + control byte + band switch byte + STOP.
For the complete sequence see Table 10 (sequence 1) or Table 11 (sequence 2).
Table 10
Complete sequence 1
Table 11
Complete sequence 2
Table 12
Divider bytes only sequence
Table 13
Control and band switch bytes only sequence
Table 14
Control byte only sequence
Other sequences are not allowed in the write mode.
Table 15
One status byte acquisition
Notes
1.
2.
XX = the read status byte.
X = no acknowledge from the master means end of sequence.
S
C2
A
06
A
40
A
CE
A
08
A
P
S
C2
A
CE
A
08
A
06
A
40
A
P
S
C2
A
06
A
40
A
P
S
C2
A
CE
A
08
A
P
S
C2
A
CE
A
P
S
C3
A
XX
(1)
X
(2)
P
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