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參數資料
| 型號： | TC7129CLW |
| 元件分類： | ADC |
| 英文描述： | 1-CH DUAL-SLOPE ADC, ACCESS, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁數： | 1/17頁 |
| 文件大?。?/td> | 185K |
| 代理商： | TC7129CLW |
1
TC7129
4-1/2 DIGIT ANALOG-TO-DIGITAL
CONVERTER WITH ON-CHIP LCD DRIVERS
TC7129
FEATURES
s
Count Resolution .........................................
±19,999
s
Resolution on 200 mV Scale ........................... 10
V
s
True Differential Input and Reference
s
Low Power Consumption .................... 500
A at 9V
s
Direct LCD Driver for 4-1/2 Digits, Decimal Points,
Low-Battery Indicator, and Continuity Indicator
s
Overrange and Underrange Outputs
s
Range Select Input ............................................ 10:1
s
High Common-Mode Rejection Ratio .......... 110dB
s
External Phase Compensation Not Required
GENERAL DESCRIPTION
The TC7129 is a 4-1/2 digit analog-to-digital converter
(ADC) that directly drives a multiplexed liquid crystal dis-
play (LCD). Fabricated in high-performance, low-power
CMOS, the TC7129 ADC is designed specifically for high-
resolution, battery-powered digital multimeter applications.
The traditional dual-slope method of A/D conversion has
been enhanced with a successive integration technique to
produce readings accurate to better than 0.005% of full
scale, and resolution down to 10
V per count.
The TC7129 includes features important to multimeter
applications. It detects and indicates low-battery condition.
A continuity output drives an annunciator on the display, and
can be used with an external driver to sound an audible
alarm. Overrange and underrange outputs and a range-
change input provide the ability to create auto-ranging
instruments. For snapshot readings, the TC7129 includes a
latch-and-hold input to freeze the present reading. This
combination of features makes the TC7129 the ideal
choice for full-featured multimeter and digital measurement
applications.
TYPICAL OPERATING CIRCUIT
4-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTER
WITH ON-CHIP LCD DRIVERS
TC7129-5 10/18/96
TelCom Semiconductor reserves the right to make changes in the circuitry and specifications to its devices.
ORDERING INFORMATION
Pin
Temperature
Part No.
Layout
Package
Range
TC7129CKW
Formed
44-Pin PQFP
0
°C to +70°C
TC7129CLW
—
44-Pin PLCC
0
°C to +70°C
TC7129CPL
Normal
40-Pin PDIP
0
°C to +70°C
TC7129
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
9V
+
TC04
LOW BATTERY
CONTINUITY
V+
5 pF
120 kHz
10 pF
0.1
F
20
k
0.1
F
100 k
1
F
0.1
F
150 k
10 k
V+
VIN
–
+
*
NOTE: RC network between pins 26 and 28 is not required.
*
330 k
相關PDF資料 |
PDF描述 |
|---|---|
| TC7129CKW | 1-CH DUAL-SLOPE ADC, ACCESS, PQFP44 |
| TC7131CLW | 1-CH DUAL-SLOPE ADC, ACCESS |
| TC7131CPL | 1-CH DUAL-SLOPE ADC, ACCESS, PDIP40 |
| TC7135C/PI | 1-CH 4-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PDIP28 |
| TC7135C/LI | 1-CH 4-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PQCC28 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TC7129CLW713 | 功能描述:LCD 驅動器 w/LCD Driver RoHS:否 制造商:Maxim Integrated 數位數量:4.5 片段數量: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 |
| TC7129CPL | 功能描述:LCD 驅動器 w/LCD Driver RoHS:否 制造商:Maxim Integrated 數位數量:4.5 片段數量: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 |
| TC7129CPL713 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers |
| TC7129IJL713 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers |
| TC7129IKW713 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers |
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