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参数资料
| 型号： | CXA3266Q |
| 元件分类： | PLL合成/DDS/VCOs |
| 英文描述： | PHASE LOCKED LOOP, 0.12 MHz, PQFP48 |
| 封装： | PLASTIC, QFP-48 |
| 文件页数： | 56/62页 |
| 文件大小： | 929K |
| 代理商： | CXA3266Q |
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CXA3266Q
- 6 -
Pin Description and I/O Pin Equivalent Circuit
38
VOCLP
TTL High level clamp
Clamp voltage
39
PLLVCC
PLL circuit analog power supply
5V
40
PLLGND
PLL circuit analog GND
0V
41
VCOVCC
VCO circuit analog power supply
5V
42
VCOGND
VCO circuit analog GND
0V
43
VCOHGND
VCO SUB analog GND
0V
44
IREF
Charge pump current preparation
1.2V
45
RC2
External pin for LPF
2.0V to 4.4V
46
RC1
External pin for LPF
2.1V
47
IRGND
IREF analog GND
0V
48
IRVCC
IREF analog power supply
5V
Pin No.
Symbol
Description
Reference voltage level
Pin
No.
Symbol I/O
Reference
voltage level
Equivalent circuit
Description
1IOVCC
—
5V
Digital power supply.
Ground this pin to the ground pattern
with a 0.1
F ceramic chip capacitor
as close to the pin as possible.
2IOGND
—
0V
Digital GND.
18 DVCC
—
5V
Digital power supply.
19 DGND
—
0V
Digital GND.
25 TTLGND —
0V
TTL output GND.
26 TTLVCC
—
5V
TTL output power supply.
Ground this pin to the ground pattern
with a 0.1
F ceramic chip capacitor
as close to the pin as possible.
27 IOGND
—
0V
Digital GND.
28 PECLVCC —
5V
PECL output power supply.
Ground this pin to the ground pattern
with a 0.1
F ceramic chip capacitor
as close to the pin as possible.
36 PECLVCC —
5V
PECL output power supply.
Ground this pin to the ground pattern
with a 0.1
F ceramic chip capacitor
as close to the pin as possible.
37 IOGND
—
0V
Digital GND.
39 PLLVCC
—
5V
PLL circuit analog power supply.
Ground this pin to the ground pattern
with a 0.1
F ceramic chip capacitor
as close to the pin as possible.
40 PLLGND —
0V
PLL circuit analog GND.
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