參數(shù)資料
型號(hào): TC7107IPL
廠商: TelCom Semiconductor, Inc.
英文描述: PTB 41C 14#15,27#20 PIN/SKT RE
中文描述: 3-1/2位數(shù)的A / D轉(zhuǎn)換器
文件頁(yè)數(shù): 15/19頁(yè)
文件大?。?/td> 296K
代理商: TC7107IPL
3-197
TELCOM SEMICONDUCTOR, INC.
7
6
5
4
3
1
2
8
fewer segments are “ON,” each “ON” output drops more
voltage and current. For the best case of six segments (a
“111” display) to worst case (a “1888” display) the resistor
will change about 230mW, while a circuit without the resistor
will change about 470mW. Therefore, the resistor will re-
duce the effect of display dissipation on reference voltage
drift by about 50%.
The change in LED brightness caused by the resistor is
almost unnoticeable as more segments turn off. If display
brightness remaining steady is very important to the de-
signer, a diode may be used instead of the resistor.
Figure 15. Diode or Resistor Limits Package Power Dissipation
APPLICATIONS INFORMATION
TP2
TP5
100
k
TP1
24k
1k
0.1
μ
F
TP3
0.01
μ
F
+
IN
0.22
μ
F
DISPLAY
DISPLAY
100
pF
+5V
1 M
–5V
150
0.47
μ
F
TC7107A
40
TP
4
30
21
20
10
1
47
k
1N4001
5.1
1/4W
APPLICATIONS INFORMATION
Liquid Crystal Display Sources
Several LCD manufacturers supply standard LCD dis-
plays to interface with the TC7106A 3-1/2 digit analog-to-
digital converter.
Manufacturer
Address/Phone
Part Numbers
1
Crystaloid
Electronics
5282 Hudson Dr.
Hudson, OH 44236
216/655-2429
720 Palomar Ave.
Sunnyvale, CA 94086
408/523-8200
3415 Kashikawa St.
Torrance, CA 90505
213/534-0360
612 E. Lake St.
Lake Mills, WI 53551
414/648-2361
C5335, H5535,
T5135, SX440
AND
FE 0201,0701
FE 0203, 2201
FE 0501
LD-B709BZ
LD-H7992AZ
Epson
Hamlin, Inc.
3902, 3933, 3903
Note:
1. Contact LCD manufacturer for full product listing/specifications.
Light Emitting Diode Display Sources
Several LED manufacturers supply seven segment
digits with and without decimal point annunciators for the
TC7107A.
Manufacturer
Address
Display Type
Hewlett-Packard
Components
AND
640 Page Mill Rd.
Palo Alto, CA 94304
720 Palomar Ave.
Sunnyvale, CA 94086
LED
LED
TC7106
TC7106A
TC7107
TC7107A
3-1/2 DIGIT A/D CONVERTERS
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