TC9402 TELCOM [TelCom Semiconductor, Inc], TC9402 Datasheet
TC9402
Related parts for TC9402
TC9402 Summary of contents
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... IN Reference Capacitor TELCOM SEMICONDUCTOR, INC. GENERAL DESCRIPTION The TC9400/TC9401/TC9402 are low-cost voltage-to- frequency (V/F) converters utilizing low power CMOS technology. The converters accept a variable analog input signal and generate an output pulse train whose frequency is linearly proportional to the input voltage. The devices can also be used as highly-accurate fre- ...
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... R = 100k , REF BIAS TC9402 Unit 0.01 0.05 — 0.05 0.25 % Full Scale 0.1 0.25 — 0.25 0.5 % Full Scale 25 40 — 50 100 ppm/ C Full Scale 10 — — 10 – Nominal 10 50 — ...
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... Tested @ 10k L 10. Full temperature range TC9400 TC9401 TC9402 = – 5V 100k , REF BIAS TC9402 Unit 6 — – 3 – 7.5 4 — 7.5 V – 7.5 – 4 — – 7.5 V — ...
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... Output of the integrator amplifier. No internal connection Positive power supply connection, typically +5V. VOLTAGE-TO-FREQUENCY AMPLIFIER OUT TC9400 4 11 THRESHOLD DETECTOR TC9401 TC9402 5 10 FREQ/2 OUT 6 9 OUTPUT COMMON 7 8 PULSE FREQ OUT through a 100 k resistor. SS TELCOM SEMICONDUCTOR, INC. ...
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... V/F. The pulse REF must simply be long enough for full charge transfer to take place. TC9400 TC9401 TC9402 + 10k f OUT 10k f OUT / OUTPUT COMMON TC9400 TC9401 TC9402 V REF GND shorted out. REF 3-291 ...
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... TC9400 TC9401 TC9402 f OUT 1/f f OUT /2 AMP OUT NOTES adjust f MIN , set 10mV and adjust the 50k offset for 10Hz output adjust f MAX , set 10V and adjust REF for 10 kHz output increase f OUT MAX to 100kHz, change C REF to 2pF and C INT to 75pF. ...
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... INT although mica and ceramic devices can be used in applica- tions where their temperature limits are not exceeded. Locate as close as possible to pins 12 and 13. or TC9400 TC9401 TC9402 is supplied through this REF removed from the REF REF . Break-before-make switching ensures that ) is related to the analog input ...
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... TC9400 TC9401 TC9402 C REF The exact value is not critical and may be used to trim the full-scale frequency (see "Input/Output Relationships"). Glass film or air trimmer capacitors are recommended because of their stability and low leakage. Locate as close as possible to pins 5 and Power supplies of 5V are recommended. For high- accuracy requirements, 0 ...
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... TC9400 OUT ZERO 2 ADJUST 6 GND f OUT /2 D1 0.1 OUTPUT 5.1VZ COMMON 7 V REF 1 I BIAS 100k Figure 5. Voltage to Frequency TC9400 TC9401 TC9402 10k f OUT 10k f OUT /2 10k 10k 8 10 OUTPUT FREQUENCY 9 DIGITAL GROUND 3-295 ...
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... TC9400 TC9401 TC9402 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 ( dispensed into the op amp's summing junction. This charge in turn flows through the feedback resistor, generating voltage pulses at the output of the op amp ...
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... Then, f input frequency waveform, except that f 3 sec after f IN frequency of one-half f If these outputs are not used, pins 8, 9 and 10 should be connected to ground. TC9400 TC9401 TC9402 OUT OUTPUT 9 COMMON * ...
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... TC9400 TC9401 TC9402 100k Offset Adjust 33k Frequency Input Note: The output is referenced to pin 6, which is at 6.2V (Vz). For frequency meter applications meter with a series-scaling resistor can be placed across pins 6 and 12. Output Filtering The output of the TC9400 has a sawtooth ripple super- imposed level. The ripple will be rejected if the ...
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... Figure 11B, may be required. 14 1000pF 1k THRESHOLD 11 DETECTOR TC9400 CLRA CD4538 Figure 11. Power-On Operation/Reset TC9400 TC9401 TC9402 will usually (A) ( 9400 3-299 ...