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TC7116

TelCom
Part Number TC7116
Manufacturer TelCom
Description 3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
Published Aug 21, 2005
Detailed Description TC7116 TC7116A TC7117 TC7117A 3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD FEATURES s Low Temperature Drift Intern...
Datasheet PDF File TC7116 PDF File

TC7116
TC7116

Overview
TC7116 TC7116A TC7117 TC7117A 3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD FEATURES s Low Temperature Drift Internal Reference TC7116/TC7117 .
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80 ppm/°C Typ TC7116A/TC7117A .
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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 .
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2V or 200 mV 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 .
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1012Ω s Low Power Operation .
10 mW 1 GENERAL DESCRIPTION The TC7116A/TC7117A are 3-1/2 digit CMOS analogto-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 8-mA 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 – ) is not available as it is with the TC7106/ low input (VREF – 7107.
VREF 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 1012Ω input impedance.
The 15 µVP-P noise performance guarantees a “rock solid” reading.
The auto-zero cycle guarantees a zero display reading with a 0V in...


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