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参数资料
| 型号： | TC7117ACLWRT |
| 元件分类： | ADC |
| 英文描述： | 1-CH DUAL-SLOPE ADC, PQCC44 |
| 封装： | PLASTIC, LCC-44 |
| 文件页数： | 1/18页 |
| 文件大小： | 160K |
| 代理商： | TC7117ACLWRT |
TC7116
TC7116A
TC7117
TC7117A
TC7116/A/7117/A-7 9/17/99
2001 Microchip Technology Inc.
DS21457A
ORDERING INFORMATION
PART CODE
TC711X X XXX
6 = LCD
7 = LED
A or blank*
* "A" parts have an improved reference TC
Package Code (see below):
3-1/2 Digit Analog-To-Digital Convereters with Hold
VREF
+
TC7116/A
9V
VREF
33
34
24 k
1 k
31
29
36
39
38
40
0.47
F
0.1
F
V
–
1
OSC
3
OSC
2
OSC
TO ANALOG
COMMON (PIN 32)
3 CONVERSIONS/SEC
COSC
100 k
47 k
0.22
F
0.01
F
ANALOG
INPUT
+
–
CREF
–
CREF
+
VIN
+
VIN
–
ANALOG
COMMON
VINT
VBUFF
CAZ
20
21
35
SEGMENT
DRIVE
2–19
22–25
POL
BP/GND
V
+
MINUS SIGN
BACKPLANE
DRIVE
28
ROSC 100 pF
LCD DISPLAY (TC7116/7116A)
OR COMMON ANODE LED
DISPLAY (TC7117/7117A)
1 M
27
30
32
HLDR
DISPLAY
HOLD
100 mV
1
26
TC7117/A
+
FEATURES
s Low Temperature Drift Internal Reference
TC7116/TC7117 ............................ 80 ppm/
°C Typ.
TC7116A/TC7117A ....................... 20 ppm/
°C Typ.
s Display Hold Function
s Directly Drives LCD or LED Display
s Guaranteed Zero Reading With Zero Input
s Low Noise for Stable
Display .......... 2V or 200mV Full-Scale Range (FSR)
s Auto-Zero Cycle Eliminates Need for Zero
Adjustment Potentiometer
s True Polarity Indication for Precision Null
Applications
s Convenient 9V Battery Operation
(TC7116/TC7116A)
s High Impedance CMOS Differential Inputs .... 1012
s Low Power Operation ..................................... 10mW
GENERAL DESCRIPTION
The TC7116A/TC7117A are 3-1/2 digit CMOS analog-
to-digital converters (ADCs) containing all the active
components necessary to construct a 0.05% resolution
measurement system. Seven-segment decoders, polarity
and digit drivers, voltage reference, and clock circuit are
integrated on-chip. The TC7116A drives liquid crystal
displays (LCDs) and includes a backplane driver. The
TC7117A drives common anode light emitting diode (LED)
displays directly with an 8mA drive current per segment.
These devices incorporate a display hold (HLDR)
function. The displayed reading remains indefinitely, as
long as HLDR is held high. Conversions continue, but
output data display latches are not updated. The reference
low input (V
–
REF) is not available as it is with the TC7106/
7107. V
–
REF is tied internally to analog common in the
TC7116A/7117A devices.
The TC7116A/7117A 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 leakage current and a 1012
input impedance. The
15
VP-P noise performance guarantees a “rock solid”
reading. The auto-zero cycle guarantees a zero display
reading with a 0V input.
The TC7116A and TC7117A feature a precision, low-
drift internal reference, and are functionally identical to the
TC7116/TC7117. A low-drift external reference is not
normally required with the TC7116A/TC7117A.
AVAILABLE PACKAGES
40-Pin PDIP
40-Pin CDIP
44-Pin PQFP
Formed Leads
44-Pin Plastic Chip
Carrier PLCC
Package
Temperature
Code
Package
Range
CKW
44-Pin PQFP
0
°C to +70°C
CLW
44-Pin PLCC
0
°C to +70°C
CPL
40-Pin Plastic DIP
0
°C to +70°C
IJL
40-Pin CerDIP
– 25
°C to +85°C
}
Figure 1. Typical TC7116/A/7/A Operating Circuit
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| TC7117CKW | 功能描述:LED显示驱动器 w/Hold RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| TC7117CKW | 制造商:Microchip Technology Inc 功能描述:A/D Converter (A-D) IC |
| TC7117CKW713 | 功能描述:LED显示驱动器 w/Hold RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
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