參數(shù)資料
型號： TDA8024
廠商： NXP Semiconductors N.V.
英文描述： ECONOLINE: RB & RA - Dual Output from a Single Input Rail- Power Sharing on Output- Industry Standard Pinout- 1kVDC & 2kVDC Isolation- Custom Solutions Available- UL94V-0 Package Material- Efficiency to 85%
中文描述： IC卡接口
文件頁數(shù)： 22/29頁
文件大小： 172K
代理商： TDA8024
2004 July 12
22
Philips Semiconductors
Product specification
IC card interface
TDA8024
Notes
1.
All parameters remain within limits but are tested only statistically for the temperature range. When a parameter is
specified as a function of V
DD
or V
CC
it means their actual value at the moment of measurement.
If no external bridge is used then, to avoid any disturbance, it is recommended to connect pin 18 to ground. Pin 18
is not connected in the TDA8024AT
To meet these specifications, pin V
CC
should be decoupled to CGND using two ceramic multilayer capacitors of low
ESR both with values of 100 nF, or one 100 nF and one 220 nF (see Fig.13).
Permitted capacitor values are 100, or 100 + 100, or 220, or 220 + 100, or 330 nF.
2.
3.
4.
5.
Transition time and duty factor definitions are shown in Fig.12;
6.
7.
Pin CMDVCC is active LOW; pin RSTIN is active HIGH; for CLKDIV1 and CLKDIV2 functions see Table 1.
Pin PRES is active LOW; pin PRES is active HIGH; PRES has an integrated 1.25
μ
A current source to GND
(PRES to V
DD
); the card is considered present if at least one of the inputs PRES or PRES is active.
δ
t
+
t
1
t
2
--------------
=
handbook, full pagewidth
MDB058
10%
90%
90%
10%
tr
tf
t1
t2
VOH
VOH
+
VOL
2
VOL
Fig.12 Definition of output and input transition times.
13 APPLICATION INFORMATION
Performance can be affected by the layout of the
application. For example, an additional cross-capacitance
of 1 pF between card reader contacts C2 and C3 or C2
and C7 can cause contact C2 to be polluted with high
frequency noise from C3 (or C7). In this case, include a
100 pF capacitor between contacts C2 and CGND.
Application recommendations:
EnsurethereisamplegroundareaaroundtheTDA8024
and the connector; place the TDA8024 very near to the
connector; decouple the V
DD
and V
DDP
lines (these lines
are best positioned under the connector)
The TDA8024 and the microcontroller must use the
same V
DD
supply. Pins CLKDIV1, CLKDIV2, RSTIN,
PRES, PRES, AUX1UC, I/OUC, AUX2UC, 5V/3V,
CMDVCC, and OFF are referred to V
DD
; if pin XTAL1 is
to be driven by an external clock, also refer this pin to
V
DD
Track C3 should be placed as far as possible from the
other tracks
The track connecting CGND to C5 should be straight
(the two capacitors on C1 should be connected to this
ground track)
Avoid ground loops between CGND, PGND and GND
Decouple V
DDP
and V
DD
separately; if the two supplies
are the same in the application, then they should be
connected in star on the main track.
With all these layout precautions, noise should be kept to
an acceptable level and jitter on C3 should be less than
100 ps.
Reference layouts are provided in “Application
note 10141” available on request.
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相關代理商/技術參數(shù)
參數(shù)描述
TDA8024AT 制造商:NXP Semiconductors 功能描述: 制造商:PHILIPS-SEMI 功能描述:
TDA8024AT/C1,112 功能描述:輸入/輸出控制器接口集成電路 IOCTRL 5V 1.5A 0.56W RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray
TDA8024AT/C1,118 功能描述:功率放大器 IC Card Interface 28-Pin RoHS:否 制造商:TriQuint Semiconductor 封裝 / 箱體: 工作電源電壓:28 V 電源電流:2.5 A 工作溫度范圍: 封裝:
TDA8024T 制造商:NXP Semiconductors 功能描述:
TDA8024T/C1 制造商:NXP Semiconductors 功能描述:
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