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參數(shù)資料
| 型號(hào)： | NJ88C21 |
| 廠商： | Zarlink Semiconductor Inc. |
| 元件分類(lèi)： | 通用總線功能 |
| 英文描述： | FREQUENCY SYNTHESISER (MICROPROCESSOR INTERFACE) WITH RESETTABLE COUNTERS |
| 中文描述： | 頻率合成器（微處理器接口）與自復(fù)計(jì)數(shù)器 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 298K |
| 代理商： | NJ88C21 |
NJ8821
NJ8821
FREQUENCY SYNTHESISER (MICROPROCESSOR INTERFACE)
WITH RESETTABLE COUNTERS
Fig.2 Block diagram
PROGRAM
ENABLE (PE)
OSC IN
OSC OUT
D0
D1
D2
D3
F
IN
V
DD
V
SS
LATCH 1
LATCH 2
LATCH 3
‘M’ COUNTER
(10 BITS)
CONTROL LOGIC
LATCH 4
LATCH 5
‘A’ COUNTER
(7 BITS)
FREQUENCY
/
PHASE
DETECTOR
V
SS
PDA
PDB
LOCK DETECT (LD)
MODULUS
CONTROL
OUTPUT (MC)
RB CH
15 16 17
f
v
REFERENCE COUNTER
(11BITS)
LATCH 6
LATCH 7
LATCH 8
4
2
SAMPLE
/
HOLD
PHASE
DETECTOR
f
r
LATCH SELECT
LOGIC
DS0 DS1 DS2
14
7
8
9
10
11
12
4
6
5
TO
INTERNAL
LATCHES
DATA SELECT INPUTS
19 20
1
2
3
18
DATA
INPUTS
ABSOLUTE MAXIMUM RATINGS
Supply voltage, V
DD
2
V
SS
Input voltage
Open drain output, pin 3
All other pins
Storage temperature
Storage temperature
2
0·5V to 7V
7V
V
SS
2
0·3V to V
DD
1
0·3V
2
65
°
C to
1
150
°
C
(DG package, NJ8821MA)
2
55
°
C to
1
125
°
C
(DP and MP packages, NJ8821)
ORDERING INFORMATION
NJ8821 BA DP
Plastic DIL Package
NJ8821 BA MP
Miniature Plastic DIL Package
NJ8821 MA
DG
Ceramic DIL Package
T
he NJ8821 is a synthesiser circuit fabricated on the GPS
CMOS process and is capable of achieving high sideband
attenuation and low noise performance. It contains a reference
oscillator, 11-bit programmable reference divider, digital and
sample-and-hold comparators, 10-bit programmable ‘M’ counter,
7-bit programmable ‘A’ counter and the necessary control and
latch circuitry for accepting and latching the input data.
Data is presented as eight 4-bit words under external control
from a suitable microprocessor..
It is intended to be used in conjunction with a two-modulus
prescaler such as the SP8710 series to produce a universal
binary coded synthesiser.
The NJ8821 is available in Plastic DIL (DP) and Miniature
Plastic DIL (MP) packages, both with operating temperature
range of
2
30
°
C to
1
70
°
C. The NJ8821MA is available only in
Ceramic DIL package with operating temperature range of
2
40
°
C to
1
85
°
C.
FEATURES
I
Low Power Consumption
I
Microprocessor Compatible
I
High Performance Sample and Hold Phase Detector
I
>10MHz Input Frequency
CH
RB
MC
DS2
DS1
DS0
PE
NC
D3
D2
PDA
PDB
LD
F
IN
V
SS
V
DD
OSC IN
OSC OUT
D0
D1
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
NJ8821
DS3278-1.3
Fig.1 Pin connections - top view
DP20, MP20
DG20
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PDF描述 |
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| NJ88C22 | Frequency Synthesiser with resettable counters |
| NJ88C22MADG | Frequency Synthesiser with resettable counters |
| NJ88C22MADP | Frequency Synthesiser with resettable counters |
| NJ88C22MAMP | Frequency Synthesiser with resettable counters |
| NJ88C24 | Frequency Synthesiser with non-resettable counters |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NJ88C22 | 制造商:ZARLINK 制造商全稱(chēng):Zarlink Semiconductor Inc 功能描述:Frequency Synthesiser with resettable counters |
| NJ88C22MADG | 制造商:ZARLINK 制造商全稱(chēng):Zarlink Semiconductor Inc 功能描述:Frequency Synthesiser with resettable counters |
| NJ88C22MADP | 制造商:ZARLINK 制造商全稱(chēng):Zarlink Semiconductor Inc 功能描述:Frequency Synthesiser with resettable counters |
| NJ88C22MAMP | 制造商:ZARLINK 制造商全稱(chēng):Zarlink Semiconductor Inc 功能描述:Frequency Synthesiser with resettable counters |
| NJ88C22MAMPTF | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Zarlink Semiconductor Inc 功能描述: |
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