参数资料
型号: TC7117ACPI
元件分类: ADC
英文描述: 1-CH DUAL-SLOPE ADC, PDIP40
封装: PLASTIC, DIP-40
文件页数: 1/32页
文件大小: 515K
代理商: TC7117ACPI
2006 Microchip Technology Inc.
DS21455C-page 1
TC7106/A/TC7107/A
Features:
Internal Reference with Low Temperature Drift:
- TC7106/7: 80ppm/°C Typical
- TC7106A/7A: 20ppm/°C Typical
Drives LCD (TC7106) or LED (TC7107)
Display Directly
Zero Reading with Zero Input
Low Noise for Stable Display
Auto-Zero Cycle Eliminates Need for Zero
Adjustment
True Polarity Indication for Precision Null
Applications
Convenient 9V Battery Operation (TC7106A)
High-Impedance CMOS Differential Inputs: 1012
Ω
Differential Reference Inputs Simplify Ratiometric
Measurements
Low-Power Operation: 10mW
Applications:
Thermometry
Bridge Readouts: Strain Gauges, Load Cells, Null
Detectors
Digital Meters: Voltage/Current/Ohms/Power, pH
Digital Scales, Process Monitors
Portable Instrumentation
Device Selection Table
General Description:
The TC7106A and TC7107A 3-1/2 digit direct display
drive Analog-to-Digital Converters allow existing 7106/
7107 based systems to be upgraded. Each device has
a precision reference with a 20ppm/°C max tempera-
ture coefficient. This represents a 4 to 7 times improve-
ment over similar 3-1/2 digit converters. Existing 7106
and 7107 based systems may be upgraded without
changing external passive component values. The
TC7107A drives common anode light emitting diode
(LED) displays directly with 8mA per segment. A low
cost, high resolution indicating meter requires only a
display,
four
resistors,
and
four
capacitors.The
TC7106A low-power drain and 9V battery operation
make it suitable for portable applications.
The TC7106A/TC7107A reduces linearity error to less
than 1 count. Rollover error – the difference in readings
for equal magnitude, but opposite polarity input signals,
is below ±1 count. High-impedance differential inputs
offer 1pA leakage current and a 1012
Ω input imped-
ance. The differential reference input allows ratiometric
measurements
for
ohms
or
bridge
transducer
measurements. The 15
μVP–P noise performance
ensures a “rock solid” reading. The auto-zero cycle
ensures a zero display reading with a zero volts input.
Package
Code
Package
Pin Layout
Temperature
Range
CPI
40-Pin PDIP
Normal
0
°C to +70°C
IPL
40-Pin PDIP
Normal
-25
°C to +85°C
IJL
40-Pin CERDIP
Normal
-25
°C to +85°C
CKW
44-Pin PQFP
Formed
Leads
0
°C to +70°C
CLW
44-Pin PLCC
0
°C to +70°C
3-1/2 Digit Analog-to-Digital Converters
相关PDF资料
PDF描述
TC7117IPL 1-CH DUAL-SLOPE ADC, PDIP40
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TC7117AIPL 1-CH DUAL-SLOPE ADC, PDIP40
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