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TC8492A, TC84A02F-007, TC850

Table of contents:
Info of TC8492A
Info of TC84A02F-007
Info of TC850

TC8492A, TC84A02F-007, TC850 Selling Leads, Datasheet

Package Cooled:PLCC D/C:09+

TC8492A, TC84A02F-007, TC850 Datasheet download

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Part Number: TC8492A

MFG: --

Package Cooled: PLCC

D/C: 09+

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TC850 General Description

The TC850 is a monolithic CMOS A/D converter (ADC) with resolution of 15-bits plus sign. It combines a chopper- stabilized buffer and integrator with a unique multiple- slope integration technique that increases conversion speed. The result is 16 times improvement in speed over previous 15-bit, monolithic integrating ADCs (from 2.5 conversions per second up to 40 per second). Faster conversion speed is especially welcome in systems with human interface, such as digital scales.

The TC850 incorporates an ADC and a µP-compatible digital interface. Only a voltage reference and a few, noncritical, passive components are required to form a complete 15-bit plus sign ADC. CMOS processing provides the TC850 with high-impedance, differentialinputs. Input bias current is typically only 30pA, permitting direct interface to sensors. Input sensitivity of 100µV per least significant bit (LSB) eliminates the

TC850 Maximum Ratings

Positive Supply Voltage..................................+6V
Negative Supply Voltage ............................... - 9V
Analog Input Voltage (I_N+ pr I_N-) ..... V_DD to V_SS
Voltage Reference Input:
(R_EF1+, R_EF1, R_EF2+)...................... V_DD to VSS
Logic Input Voltage.......V_DD+ 0.3V to GND  0.3V
Current Into Any Pin.....................................10mA
While Operating .........................................100µA
Ambient Operating Temperature Range
C Device........................................0°C to +70°C
I Device......................................-25°C to +85°C
Package Power Dissipation (TA  70°C)
CerDIP ........................................................2.29Ω
Plastic DIP....................................................1.23Ω
Plastic PLCC ................................................1.23Ω

TC850 Features

• 15-bit Resolution Plus Sign Bit
• Up to 40 Conversions per Second
• Integrating ADC Technique
- Monotonic
- High Noise Immunity
- Auto Zeroed Amplifiers Eliminate Offset Trimming
• Wide Dynamic Range: 96dB
• Low Input Bias Current: 30pA
• Low Input Noise: 30µVP-P
• Sensitivity: 100µV
• Flexible Operational Control
• Continuous or On Demand Conversions
• Data Valid Output
• Bus Compatible, 3-State Data Outputs
- 8-BitDataBus
- SimpleµP Interface
- Two Chip Enables
- Read ADC Result Like Memory
• ± 5V Power Supply Operation: 20mΩ
• 40-Pin Dual-in-Line or 44-Pin PLCC Packages

TC850 Typical Application

• Precision Analog Signal Processor
• Precision Sensor Interface
• High Accuracy DC Measurements

TC850 Connection Diagram

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