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U4224B-CFLG3 の電気的特性と機能

U4224B-CFLG3のメーカーはTEMIC Semiconductorsです、この部品の機能は「Time Code Receiver」です。


製品の詳細 ( Datasheet PDF )

部品番号 U4224B-CFLG3
部品説明 Time Code Receiver
メーカ TEMIC Semiconductors
ロゴ TEMIC Semiconductors ロゴ 




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U4224B-CFLG3 Datasheet, U4224B-CFLG3 PDF,ピン配置, 機能
Time Code Receiver
U4224B
Description
The U4224B is a bipolar integrated straight through receiver circuit in the frequency range of 40 to 80 kHz.
The device is designed for radio controlled clock applications.
Features
D Very low power consumption
D Very high sensitivity
D High selectivity by using two crystal filters
D Power down mode available
D Only a few external components necessary
D Digitalized serial output signal
D AGC hold mode
Block Diagram
GND 3
VCC 1
PON
15
Power Supply
TCO
16
93 7727 e
Decoder
11 FLB
10 FLA
9 DEC
IN 2
AGC
Amplifier
4 5 6 13
SB Q1A Q1B Q2A
14
Q2B
Rectifier & 12 SL
Integrator
7
REC
8
INT
TELEFUNKEN Semiconductors
Rev. A3, 02-Apr-96
1 (17)

1 Page





U4224B-CFLG3 pdf, ピン配列
U4224B
Q1A, Q1B
In order to achieve a high selectivity, a crystal is con-
nected between the pins Q1A and Q1B. It is used with the
serial resonance frequency of the time code transmitter
(e.g. 60 kHz WWVB, 77.5 kHz DCF or 40kHz JG2AS).
The equivalent parallel capacitor of the filter crystal is
internally compensated. The compensated value is about
0.7 pF. If the full sensitivity and selectivity is not needed,
the crystal filter can be substituted by a capacitor of 10 pF
for DCF and WWVB and 22 pF for JG2AS.
SL
AGC hold mode: SL high (VSL = VCC) sets normal func-
tion, SL low (VSL = 0) disconnects the rectifier and holds
the voltage VINT at the integrator output and also the AGC
amplifier gain.
VCC
Q1A Q1B
94 8378
SL
94 8382
GND
INT
REC
Rectifier output and integrator input: The capacitor C1
between REC and INT is the lowpass filter of the rectifier
and at the same time a damping element of the gain
control.
94 8374
Integrator output: The voltage VINT is the control voltage
for the AGC. The capacitor C2 between INT and DEC
defines the time constant of the integrator. The current
through the capacitor is the input signal of the decoder.
94 8375
REC
GND
INT
GND
DEC
Decoder input: Senses the current through the integration
Wcapacitor C2. The dynamic input resistance has a value of
about 420k and is low compared to the impedance of
C2.
FLA, FLB
Lowpass filter: A capacitor C3 connected between FLA
and FLB supresses higher frequencies at the trigger
circuit of the decoder.
DEC
94 8376
GND
FLB
FLB
94 8377
TELEFUNKEN Semiconductors
Rev. A3, 02-Apr-96
3 (17)


3Pages


U4224B-CFLG3 電子部品, 半導体
U4224B
Electrical Characteristics
VCC = 3 V, reference point pin 3, input signal frequency 80 kHz, Tamb = 25 _C, unless otherwise specified
Parameters
Supply voltage range
Supply current
Test Conditions / Pin
pin 1
pin 1
mwithout reception signal
with reception signal = 200 V
OFF-mode
Symbol
VCC
ICC
Min.
1.2
Typ. Max.
5.25
30
15 25
0.1
Set-up time after VCC ON VCC = 1.5 V
AGC AMPLIFIER INPUT; IN
pin 2
t2
Reception frequency range
Minimum input voltage
Maximum input voltage
WRres = 100 k , Qres > 30
Input capacitance to ground
TIMING CODE OUTPUT; TCO pin 16
fin 40
80
Vin 1 1.5
Vin 40 80
Cin 1.5
Output voltage
HIGH
LOW
Output current
HIGH
LOW
Decoding characteristics
WRLOAD = 870 k to GND
WRLOAD = 650 k to VCC
VOH
VOL
VCC - 0.4
VTCO = VCC/2
VTCO = VCC/2
DCF77 based on the values of
the application circuit
page KEIN MERKER:
TCO pulse width 100 ms
TCO pulse width 200 ms
ISOURCE
ISINK
t100
t200
3
4
60
160
10
12
90
190
0.4
130
230
Decoding characteristics
Delay compared with the
transient of the RF signal:
drop down (start transition)
rise for 100 ms pulse
(end transition)
rise for 200 ms pulse
(end transition)
WWVB based on the values of
the application circuit
page KEIN MERKER:
TCO pulse width 200 ms
TCO pulse width 500 ms
TCO pulse width 800 ms
ts
te1
te2
t200
t500
t800
30
25
10
140
440
740
60
55
30
200
500
800
Delay compared with the
transient of the RF signal:
drop down (start transition)
rise (end transition)
ts 45
te 20
80
45
Unit
V
mmmAAA
s
kHz
mV
mV
pF
V
V
mA
mA
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
6 (17)
TELEFUNKEN Semiconductors
Rev. A3, 02-Apr-96

6 Page



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部品番号部品説明メーカ
U4224B-CFLG3

Time Code Receiver

TEMIC Semiconductors
TEMIC Semiconductors


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