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參數(shù)資料
| 型號： | TSA5055T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | XO, clock |
| 英文描述： | 2.65 GHz bidirectional I2C-bus controlled synthesizer |
| 中文描述： | PLL FREQUENCY SYNTHESIZER, 2650 MHz, PDSO16 |
| 封裝： | 3.90 MM, PLASTIC, MS-012AC, SOT-109-1, SOP-16 |
| 文件頁數(shù)： | 4/20頁 |
| 文件大?。?/td> | 101K |
| 代理商： | TSA5055T |
1999 Aug 11
4
Philips Semiconductors
Product specification
2.65 GHz bidirectional I
2
C-bus controlled
synthesizer
TSA5055T
PINNING
SYMBOL
PIN
DESCRIPTION
PD
Q1
Q2
SDA
SCL
P7
1
2
3
4
5
6
charge-pump output
crystal oscillator input 1
crystal oscillator input 2
serial data input/output
serial clock input
port output/input (general
purpose)
port output/input (ADC)
port output/input (general
purpose)
port output/input (general
purpose)
port output (also used for address
selection)
port output
voltage supply
RF signal input 1
RF signal input 2 (decoupled)
ground
drive output
P6
P5
7
8
P4
9
P3
10
P0
V
CC
RF
IN1
RF
IN2
GND
UD
11
12
13
14
15
16
Fig.2 Pin configuration.
handbook, halfpage
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
TSA5055T
PD
Q1
Q2
SDA
SCL
P7
P6
P5
UD
GND
RFIN2
RFIN1
VCC
P0
P3
P4
MBC304
FUNCTIONAL DESCRIPTION
General
The TSA5055T is controlled via the 2-wire I
2
C-bus. For
programming, there is one (7-bit) module address and the
R/W bit for selecting READ or WRITE mode.
WRITE mode: R/W = 0
; see Table 1
After the address transmission (first byte), data bytes can
be sent to the device. Four data bytes are needed to fully
program the TSA5055T. The bus transceiver has an
auto-increment facility that permits the programming of the
TSA5055T within one single transmission (address + four
data bytes).
The TSA5055T can also be partly programmed on the
condition that the first data byte following the address is
byte 2 or byte 4.
The meaning of the bits in the data bytes is given in
Table 1. The first bit of the first data byte transmitted
indicates whether frequency data (first bit = 0) or
charge-pump and port information (first bit = 1) will follow.
Until an I
2
C-bus STOP condition is sent by the controller,
additional data bytes can be entered without the need to
re-address the device. This allows a smooth frequency
sweep for fine tuning. At power-on, the ports are set to the
high-impedance state.
The 7.8125 kHz reference frequency is obtained by
dividing the output of the 4 MHz crystal oscillator by 512.
Because the input of the RF signal is first divided by 16,
the step size is 125 kHz. A 3.2 MHz crystal can offer a step
size of 100 kHz.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| TSA5055TD-T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:I2C-Bus Frequency Synthesizer |
| TSA5059 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2.7 GHz I2C-bus controlled low phase noise frequency synthesizer |
| TSA5059A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2.7 GHz I2C-bus controlled low phase noise frequency synthesizer |
| TSA5059AT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2.7 GHz I2C-bus controlled low phase noise frequency synthesizer |
| TSA5059AT/C2,518 | 制造商:NXP Semiconductors 功能描述: |
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