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參數(shù)資料
| 型號(hào)： | U4222B-CFPG1 |
| 英文描述： | Radio Controlled Clock Receiver |
| 中文描述： | 電波鐘接收器 |
| 文件頁(yè)數(shù)： | 2/9頁(yè) |
| 文件大小： | 98K |
| 代理商： | U4222B-CFPG1 |
TELEFUNKEN Semiconductors
U4222B
Preliminary Information
Rev. A1: 07.08.1995
2 (9)
Pin Description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Symbol
IN2
IN1
GND
CAGC
CDEM
INA2
GND
OUTA1
V
CCD
NC
NC
NC
TCO
PON
GND
V
CCA
Function
Amplifier 1 – Input 2
Amplifier 1 – Input 1
Analog ground
Time constant of AGC
Low pass filter
Amplifier 2 input
Digital ground
Amplifier 1 output
Supply voltage (digital)
Not connected
Not connected
Not connected
Time code output
Power ON/OFF control
Ground (substrate)
Supply voltage (analog)
2
3
4
7
8
1
5
6
16
15
13
12
14
11
10
9
IN2
CCA
V
CAGC
PON
IN1
GND
CDEM
INA2
GND
NC
NC
NC
OUTA1
CCD
V
U4222B
GND
TCO
94 8031 e
IN1, IN2
IN2 is connected to pin 16 (V
CCA
). A ferrite antenna is
connected between IN1 and IN2. Q of antenna circuit
should be as high as possible, but the temperature
influence must be compensated. The resonant resistance
should be 200 k to 300 k for optimal sensitivity.
OUTA1, INA2
To achieve a high selectivity, a quartz resonator is
connected between the pins OUTA1
and INA2. It is used
with the serial resonance frequency of the time code
transmitter (e.g. 40 kHz JG2AS). The parasitic parallel
capacitance C
0
of the quartz resonator should be 0.5 pF
to 1 pF.
CAGC
A control voltage derived from the field strength is
generated to control the amplifiers. The time constant of
this automatic gain control (AGC) is influenced by the
capacitor CAGC.
CDEM
After demodulation the signal is low pass filtered by the
capacitor CDEM.
PON
If PON is connected to V
CCD,
the U4222B receiver IC
will be activated. The set-up time is typical 2.5 s after
applying V
CCD
at this pin. If PON is connected to GND,
the receiver will go into stop mode.
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相關(guān)代理商/技術(shù)參數(shù) |
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| U4223B | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Time-Code Receiver with A/D Converter |
| U4223B-BFL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC |
| U4223B-BFS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC |
| U4223B-CFS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Remote-Control Receiver/Decoder |
| U4223B-CFSG3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Remote-Control Receiver/Decoder |
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