- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373527 > T4223B-MC (ATMEL CORP) Time-Code Receiver with A/D Converter PDF資料下載
參數(shù)資料
| 型號(hào)： | T4223B-MC |
| 廠商： | ATMEL CORP |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | Time-Code Receiver with A/D Converter |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, UUC22 |
| 封裝： | DIE-22 |
| 文件頁(yè)數(shù)： | 3/18頁(yè) |
| 文件大?。?/td> | 138K |
| 代理商： | T4223B-MC |
第1頁(yè)第2頁(yè)當(dāng)前第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)
U4223B
Rev. A7, 06-Mar-01
3 (18)
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 resonant frequency of the time-code transmitter
(e.g., 60 kHz WWVB, 77.5 kHz DCF or 40 kHz JG2AS).
The equivalent parallel capacitor of the filter crystal is
internally compensated. The compensated value is about
0.7 pF. If full sensitivity and selectivity are not needed,
the crystal filter can be substituted by a capacitor of 82 pF.
Q1A
Q1B
GND
Figure 5.
REC
Rectifier output and integrator input: The capacitor C
1
between REC and INT is the lowpass filter of the rectifier
and at the same time a damping element of the gain
control.
REC
GND
Figure 6.
DEC
Decoder input: Senses the current through the integration
capacitor C
2
. The dynamic input resistance has a value of
about 420 k and is low compared to the impedance of
C
2
.
DEC
GND
Figure 7.
SL
AGC hold mode: SL high (V
SL
= V
CC
) sets normal func-
tion, SL low (V
SL
= 0) disconnects the rectifier and holds
the voltage V
INT
at the integrator output and also the AGC
amplifier gain.
VCC
SL
Figure 8.
INT
Integrator output: The voltage V
INT
is the control voltage
for the AGC. The capacitor C
2
between INT and DEC
defines the time constant of the integrator. The current
through the capacitor is the input signal of the decoder.
INT
GND
Figure 9.
FLA, FLB
Lowpass filter: A capacitor C
3
connected between FLA
and FLB suppresses higher frequencies at the trigger
circuit of the decoder.
FLB
FLB
94 8377
Figure 10.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| T4223B-MF | Time-Code Receiver with A/D Converter |
| T4224 | 12 A SPDT MINIATURE POWER RELAY |
| T4224B-CC | CONNECTOR ACCESSORY |
| T4224B-CF | Time Code Receiver |
| T4260 | AM/FM Front End IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T4223B-MF | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Time-Code Receiver with A/D Converter |
| T4224 | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Time Code Receiver |
| T4224B-CC | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Time Code Receiver |
| T4224B-CF | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Time Code Receiver |
| T4227A 0100 | 制造商:CK tools 功能描述:ENGINEER'S HAMMER 100 G 制造商:CK TOOLS 功能描述:ENGINEER'S HAMMER 100 G; Hammer Type:Pin; Weight:100g; Overall Length:260mm; SVHC:No SVHC (19-Dec-2012); Handle Type:Ash; Length:260mm ;RoHS Compliant: NA |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。