TC9400_06 MICROCHIP [Microchip Technology], TC9400_06 Datasheet

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Voltage-to-Frequency/Frequency-to-Voltage Converters Features: VOLTAGE-TO-FREQUENCY • Choice of Linearity: - TC9401: 0.01% - TC9400: 0.05% - TC9402: 0.25% • 100 kHz (F/ 100 kHz (V/F) • Low Power Dissipation (Typ.) • Single/Dual Supply ...

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TC9400/9401/9402 Functional Block Diagram Integrator Integrator Capacitor Op Amp R IN Input Voltage I IN Reference Capacitor I REF Reference Voltage DS21483C-page 2 Threshold One Detector Shot ÷2 TC9400 © 2006 Microchip Technology Inc. Pulse Output Pulse/2 Output ...

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ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings* V – V ........................................................... +18V ....................................................................... – V Common...................................... 23V OUT OUT MAX V – V ..........................................................-1.5V REF SS Storage Temperature Range.............. -65°C to +150°C Operating Temperature ...

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TC9400/9401/9402 TABLE 1-1: TC940X ELECTRICAL SPECIFICATIONS (CONTINUED) Electrical Characteristics +5V specified +25°C, unless temperature range is specified (-40°C to +85°C for E device, 0°C to +70°C for C device). A Parameter Min Typ ...

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TABLE 1-1: TC940X ELECTRICAL SPECIFICATIONS (CONTINUED) Electrical Characteristics +5V specified +25°C, unless temperature range is specified (-40°C to +85°C for E device, 0°C to +70°C for C device). A Parameter Min Typ Max Positive ...

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TC9400/9401/9402 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: PIN FUNCTION TABLE Pin No. 14-Pin PDIP/CERDIP Symbol 14-Pin SOIC (Narrow BIAS 2 ZERO ADJ ...

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DETAILED DESCRIPTION 3.1 Voltage-to-Frequency (V/F) Circuit Description The TC9400 V/F converter operates on the principal of charge balancing. The operation of the TC9400 is eas- ily understood by referring to Figure 3-1. The input volt- age ( ...

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TC9400/9401/9402 3.2 Voltage-to-Time Measurements The TC9400 output can be measured in the time domain as well as the frequency domain. Some micro- computers, for example, have extensive timing capabil- ity, but limited counter capability. Also, the response time of a ...

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PIN FUNCTIONS 4.1 Threshold Detector Input In the V/F mode, this input is connected to the AMPLI- FIER OUT output (Pin 12) and triggers a 3μsec pulse when the input voltage passes through its threshold. In the F/V mode, ...

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TC9400/9401/9402 4.9 V REF A reference voltage from either a precision source, or the V supply is applied to this pin. Accuracy of the SS TC9400 is dependent on the voltage regulation and temperature characteristics of the reference circuitry. Since ...

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C REF The exact value is not critical and may be used to trim the full scale frequency (see Section 7.1 “Input/Out- put Relationships”, Input/Output Relationships). Glass film or air trimmer capacitors are recommended because of their stability and ...

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TC9400/9401/9402 910k 100k R 3 Gain 100k 910k 91k Rp Offset Input 20k Voltage (0 to 10V) Analog Ground Component Selection C F/S FREQ. REF 2200 pF 1 kHz 180 pF 10 ...

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V IN 0V–10V FIGURE 5-3: Fixed Voltage – Single Supply Operation © 2006 Microchip Technology Inc. TC9400/9401/9402 15V (Fixed 0 8.2 0.01 Gain TC9400 μF kΩ ...

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TC9400/9401/9402 6.0 FREQUENCY-TO-VOLTAGE (F/V) CIRCUIT DESCRIPTION When used as an F/V converter, the TC9400 generates an output voltage linearly proportional to the input frequency waveform. Each zero crossing at the threshold detector’s input causes a precise amount of charge (q ...

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F/V CONVERTER DESIGN INFORMATION 7.1 Input/Output Relationships The output voltage is related to the input frequency ( the transfer equation: IN EQUATION 7- OUT REF REF INT The response time ...

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TC9400/9401/9402 10k 6.2V 100k Offset Adjust 0.01 μF 33k Frequency Input Note: The output is referenced to Pin 6, which is at 6.2V (Vz). For frequency meter applications, a 1mA meter with a series scaling resistor can be placed across ...

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TC9400A TC9401A TC9402A See Figure 7-1: Threshold "Frequency Detect 11 Input Level F IN Shifter" Offset Adjust +5V 100 kΩ Zero Adjust 2 2 kΩ 2.2 kΩ I BIAS 1 10 kΩ -5V FIGURE 7-4: DC – 10 kHz Converter ...

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TC9400/9401/9402 8.0 F/V POWER-ON RESET In F/V mode, the TC9400 output voltage will occasion- ally be at its maximum value when power is first applied. This condition remains until the first pulse is applied most frequency ...

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PACKAGE INFORMATION 9.1 Package Marking Information Package marking data is not available at this time. 9.2 Taping Form Component Taping Orientation for 14-Pin SOIC (Narrow) Devices Pin 1 Carrier Tape, Reel Size, and Number of Components Per Reel Package ...

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TC9400/9401/9402 9.3 Package Dimensions (Continued) 14-Pin PDIP (Narrow) .770 (19.56) .745 (18.92) .200 (5.08) .140 (3.56) .150 (3.81) .115 (2.92) .110 (2.79) .070 (1.78) .090 (2.29) .045 (1.14) 14-Pin SOIC (Narrow) .050 (1.27) Typ. .344 (8.74) .337 (8.56) .018 (0.46) ...

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THE MICROCHIP WEB SITE Microchip provides online support via our WWW site at www.microchip.com. This web site is used as a means to make files and information easily available to customers. Accessible by using your favorite Internet browser, the web ...

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TC9400/9401/9402 READER RESPONSE It is our intention to provide you with the best documentation possible to ensure successful use of your Microchip prod- uct. If you wish to provide your comments on organization, clarity, subject matter, and ways in which ...

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Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families ...

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