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參數(shù)資料
| 型號： | SY89420 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | 5V/3.3V DUAL PHASE LOCKED LOOP |
| 中文描述： | 5V/3.3V雙鎖相環(huán) |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 92K |
| 代理商： | SY89420 |
3
ClockWorks
SY89420V
Micrel
PIN DESCRIPTION
RINA, RINA, RINB, RINB
Reference frequency inputs for loop A and B. These are
differential signal pairs and may be driven differentially or
single-ended.
FINA, FINA, FINB, FINB
Feedback frequency inputs for loop A and B. These are
differential signal pairs and may be driven differentially or
single-ended.
V
BB
, V
TH
These are the reference voltages for use as bias for the
frequency inputs. The references are generated on-chip. V
BB
is PECL compatible, while V
TH
is TTL compatible.
F1A, F2A, F1B, F2B
These pins are connection points for the loop filters, which are
to be provided off-chip. F1X is the high impedance side, F2X
is the reference side. The loop filter should be a first order, low
pass with a DC block. The difference voltage on these pins will
be a DC level, which is controlled by the loop feedback and
determined by the required VCO frequency.
FOUTA, FOUTA, FOUTB, FOUTB
Frequency outputs for the loops. These are differential,
positive referenced, emitter-follower signals and must be
terminated off-chip. Termination in 50 ohms is recommended.
S1A, S2A, S1B, S2B, S3B, S4B
These inputs are used to select the configuration for PLLA and
PLLB. They are compatible with standard TTL signal levels.
See the Frequency Selection Table for details of the logic.
V
CC
This is the positive supply for the entire chip excluding output
buffers. It should be decoupled and present a very low
impedance in order to assure low-jitter operation.
V
CCOA
, V
CCOB
These are the positive supplies for the output buffers. They
are constrained to be equal to the value of V
CC
. They should
be decoupled and present a very low impedance in order to
assure low-jitter operation.
V
EE
This pin is the negative supply for the chip and is normally
connected to ground (0V).
C
=
1.0
μ
F
±
10% (X7R dielectric)
R
=
560
±
10%
LOOP FILTER COMPONENT SELECTION
Pin
F1A
F2A
RINA
RINA
FINA
FINA
FOUTA
FOUTA
F1B
F2B
RINB
RINB
FINB
FINB
FOUTB
FOUTB
V
CC
V
CCOA
V
CCOB
V
EE
V
BB
V
TH
S1A
S2A
S1B
S2B
S3B
S4B
Function
I/O
I/O
I/O
I
I
I
I
O
O
I/O
I/O
I
I
I
I
O
O
—
—
—
—
O
O
I
I
I
I
I
I
Filter Pin 1A
Filter Pin 2A
Reference Input A
Inverted Reference Input A
Feedback Input A
Inverted Feedback Input A
Frequency Output A
Inverted Frequency Output A
Filter Pin 1B
Filter Pin 2B
Reference Input B
Inverted Reference Input B
Feedback Input B
Inverted Feedback Input B
Frequency Output B
Inverted Frequency Output B
V
CC
Output A V
CC
Output B V
CC
V
EE
(0V)
PECL Threshold Voltage
TTL Threshold Voltage
Select Input 1A (TTL)
Select Input 2A (TTL)
Select Input 1B (TTL)
Select Input 2B (TTL)
Select Input 3B (TTL)
Select Input 4B (TTL)
PIN NAMES
F2X
R
C
F1X
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SY89420VJC | 5V/3.3V DUAL PHASE LOCKED LOOP |
| SY89420VJCTR | 5V/3.3V DUAL PHASE LOCKED LOOP |
| SY89420V | 5V/3.3V Dual Phase Locked Loop(5V/3.3V 雙鎖相環(huán)) |
| SY89421VZC | 5V/3.3V HIGH-PERFORMANCE PHASE LOCKED LOOP |
| SY89421VZCTR | 5V/3.3V HIGH-PERFORMANCE PHASE LOCKED LOOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SY89420V | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:5V/3.3V DUAL PHASE LOCKED LOOP |
| SY89420VJC | 功能描述:IC PHASE LOCK LOOP 5/3.3V 28PLCC RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:ClockWorks™ 標(biāo)準(zhǔn)包裝:27 系列:Precision Edge® 類型:頻率合成器 PLL:是 輸入:PECL，晶體 輸出:PECL 電路數(shù):1 比率 - 輸入:輸出:1:1 差分 - 輸入:輸出:無/是 頻率 - 最大:800MHz 除法器/乘法器:是/無 電源電壓:3.135 V ~ 5.25 V 工作溫度:0°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC 包裝:管件 |
| SY89420VJC TR | 功能描述:IC PHASE LOCK LOOP 5/3.3V 28PLCC RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:ClockWorks™ 標(biāo)準(zhǔn)包裝:27 系列:Precision Edge® 類型:頻率合成器 PLL:是 輸入:PECL，晶體 輸出:PECL 電路數(shù):1 比率 - 輸入:輸出:1:1 差分 - 輸入:輸出:無/是 頻率 - 最大:800MHz 除法器/乘法器:是/無 電源電壓:3.135 V ~ 5.25 V 工作溫度:0°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC 包裝:管件 |
| SY89420VJCTR | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:5V/3.3V DUAL PHASE LOCKED LOOP |
| SY89420VJZ | 功能描述:鎖相環(huán) - PLL 5V/3.3V Dual Phase Locked Loop (Lead Free) RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
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