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參數(shù)資料
| 型號： | TC7126A |
| 廠商： | TelCom Semiconductor, Inc. |
| 英文描述： | 3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS |
| 中文描述： | 3-1/2數(shù)字模擬數(shù)字轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 198K |
| 代理商： | TC7126A |
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TELCOM SEMICONDUCTOR, INC.
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TC7126
TC7126A
3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS
FEATURES
I
Low Temperature Drift Internal Reference
TC7126 .......................................80 ppm/
°
C Typ
TC7126A..................................... 35 ppm/
°
C Typ
Guaranteed Zero Reading With Zero Input
Low Noise....................................................15
μ
V
P-P
High Resolution ..............................................0.05%
Low Input Leakage Current ......................1 pA Typ
I
I
I
I
10 pA Max
I
Precision Null Detectors With True Polarity at
Zero
High-Impedance Differential Input
Convenient 9V Battery Operation With
Low Power Dissipation ........................ 500
μ
W Typ
I
I
900
μ
W Max
TYPICAL APPLICATIONS
I
I
Thermometry
Bridge Readouts: Strain Gauges, Load Cells, Null
Detectors
Digital Meters and Panel Meters
— Voltage/Current/Ohms/Power, pH
Digital Scales, Process Monitors
I
I
GENERAL DESCRIPTION
The TC7126A is a 3-1/2 digit CMOS analog-to-digital
converter (ADC) containing all the active components nec-
essary to construct a 0.05% resolution measurement sys-
tem. Seven-segment decoders, digit and polarity drivers,
voltage reference, and clock circuit are integrated on-chip.
The TC7126A directly drives a liquid crystal display (LCD),
and includes a backplane driver.
A low-cost, high-resolution indicating meter requires
only a display, four resistors, and four capacitors. The
TC7126A's extremely low power drain and 9V battery
operation make it ideal for portable applications.
The TC7126A reduces linearity error to less than 1
count. Roll-over error (the difference in readings for equal
magnitude but opposite polarity input signals) is below
±
1
count. High-impedance differential inputs offer 1 pA leak-
age current and a 10
12
input impedance. The 15
μ
V
P-P
noise performance guarantees a "rock solid" reading, and
the auto-zero cycle guarantees a zero display reading with
a 0V input.
The TC7126A features a precision, low-drift internal
voltage reference and is functionally identical to the TC7126.
A low-drift external reference is not normally required with
the TC7126A.
ORDERING INFORMATION
PART CODE
TC7126X X XXX
A or blank*
R (reversed pins) or blank (CPL pkg only)
* "A" parts have an improved reference TC
Package Code
(see below)
:
Package
Code
Temperature
Range
Package
CKW
CLW
CPL
IPL
44-Pin PQFP
44-Pin PLCC
40-Pin PDIP
40-Pin PDIP (non-A only)
0
°
C to +70
°
C
0
°
C to +70
°
C
0
°
C to +70
°
C
– 25
°
C to +85
°
C
V
REF
TC7126
TC7126A
33
C
REF
34
C
REF
+
240 k
10 k
31
29
39
38
40
V
REF
V
–
OSC
–
0.33
μF
0.1 μF
1
3
OSC
2
OSC
TO ANALOG COMMON
(PIN 32)
1 CONVERSION/SEC
COSC
560 k
180 k
0.15 μF
0.01 μF
ANALOG
INPUT
–
+
–
+
V
IN
V
IN
–
ANALOG
COMMON
V
INT
V
BUFF
C
AZ
20
21
1
SEGMENT
DRIVE
2–19
22–25
POL
BP
V+
MINUS SIGN
BACKPLANE
28
50 pF
LCD
1 M
27
30
32
35
26
36
9V
+
ROSC
NOTE:
Pin numbers refer to 40-pin DIP.
40-Pin Plastic DIP
44-Pin Plastic Quad Flat
Package Formed Leads
44-Pin Plastic Chip
Carrier PLCC
AVAILABLE PACKAGES
TYPICAL OPERATING CIRCUIT
TC7126/A-8 11/6/96
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TC7126AIPL | 3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS |
| TC7126CKW | 3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS |
| TC7126IPL | 3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS |
| TC7129CKW | 4-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTER WITH ON-CHIP LCD DRIVERS |
| TC7129CKW | 4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC7126ACKW | 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 |
| TC7126ACKW713 | 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 |
| 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 |
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