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參數(shù)資料
| 型號： | TC7126ACKW713 |
| 元件分類： | ADC |
| 英文描述： | 1-CH DUAL-SLOPE ADC, PQFP44 |
| 封裝： | PLASTIC, QFP-44 |
| 文件頁數(shù)： | 6/22頁 |
| 文件大?。?/td> | 553K |
| 代理商： | TC7126ACKW713 |
TC7126/A
DS21458B-page 14
2002 Microchip Technology Inc.
7.5
TC7126A Internal Voltage
Reference
The TC7126A's analog common voltage temperature
stability has been significantly improved (Figure 7-3).
The "A" version of the industry standard TC7126
device allows users to upgrade old systems and design
new systems, without external voltage references.
External R and C values do not need to be changed.
Figure 7-4 shows analog common supplying the
necessary voltage reference for the TC7126A.
FIGURE 7-3:
ANALOG COMMON TEMP.
COEFFICIENT
FIGURE 7-4:
TC7126A INTERNAL
VOLTAGE REFERENCE
CONNECTION
8.0
TYPICAL APPLICATIONS
8.1
Liquid Crystal Display Sources
Several manufacturers supply standard LCDs to inter-
face with the TC7126A, 3-1/2 digit analog-to-digital
converter.
Note:
Contact LCD manufacturer for full product listing/
specifications.
8.2
Decimal Point and Annunciator
Drive
The TEST pin is connected to the internally generated
digital logic supply ground through a 500
resistor. The
TEST pin may be used as the negative supply for exter-
nal CMOS gate segment drivers. LCD annunciators for
decimal points, low battery indication, or function indi-
cation may be added, without adding an additional sup-
ply. No more than 1mA should be supplied by the TEST
pin; its potential is approximately 5V below V+ (see
Figure 8-1).
FIGURE 8-1:
DECIMAL POINT AND
ANNUNCIATOR DRIVES
Typical
Maximum
Typical
200
180
160
140
120
100
80
60
40
20
0
Analog
Commom
T
emper
ature
Coefficient
(ppm/
°C)
TC7126A
ICL7136
No
Maximum
Specified
No
Maximum
Specified
ICL7126
V-
ANALOG
COMMON
TC7126A
VREF+
32
35
36
26
240k
10k
VREF-
VREF
1
+
9V
SET VREF = 1/2 VREF
V+
Manufacturer
Address/Phone
Representative
Part Numbers*
Crystaloid
Electronics
5282 Hudson Dr.
Hudson, OH 44236
216-655-2429
C5335, H5535,
T5135, SX440
AND
720 Palomar Ave.
Sunnyvale, CA 94086
408-523-8200
FE 0801
FE 0203
VGI, Inc.
1800 Vernon St., Ste. 2
Roseville, CA 95678
916-783-7878
LD-B709BZ
LD-H7992AZ
Hamlin, Inc.
612 E. Lake St.
Lake Mills,
WI 53551
414-648-2361
3902, 3933,
3903
TC7126A
V+
TEST
GND
4030
BP
TC7126A
BP
TEST
37
21
V+
GND
To LCD
Decimal
Point
To LCD
Decimal
Point
To LCD
Decimal
Point
To
Backplane
4049
Multiple Decimal Point or
Annunciator Driver
Simple Inverter for Fixed Decimal Point
or Display Annunciator
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC7126ACLW | 功能描述:LCD 驅(qū)動器 3.5 digit A/D RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| TC7126ACLW713 | 功能描述:LCD 驅(qū)動器 w/Hold RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| TC7126ACPL | 功能描述:LCD 驅(qū)動器 Low Power RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| TC7126AIPL | 制造商:TELCOM 制造商全稱:TelCom Semiconductor, Inc 功能描述:3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS |
| TC7126ARCPL | 功能描述:LCD 驅(qū)動器 Low Power RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
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