전자부품 데이터시트 검색엔진 |
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TC514COI 데이터시트(PDF) 5 Page - TelCom Semiconductor, Inc |
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TC514COI 데이터시트(HTML) 5 Page - TelCom Semiconductor, Inc |
5 / 17 page 3-23 TELCOM SEMICONDUCTOR, INC. 7 6 5 4 3 1 2 8 PIN DESCRIPTION Pin No Pin No Pin No (TC500, 500A) (TC510) (TC514) Symbol Description 122 CINT Integrator output. Integrator capacitor connection. 2 Not Used Not Used VSS Negative power supply input (TC500/500A only). 333 CAZ Auto-zero input. The Auto-zero capacitor connection. 4 4 4 BUF Buffer output. The Integrator capacitor connection. 5 5 5 ACOM This pin is grounded in most applications. It is recommended that ACOM and the input common pin (V – IN or C – HN ) be within the analog common mode range (CMR). 666 C– REF Input. Negative reference capacitor connection. 777 C + REF Input. Positive reference capacitor connection. 888 V – REF Input. External voltage reference (–) connection. 999 V + REF Input. External voltage reference (+) connection. 10 15 Not Used V – IN Negative analog input. 11 16 Not Used V + IN Positive analog input. 12 18 22 A Input. Converter phase control MSB. (See input B.) 13 17 21 B Input. Converter phase control LSB. The states of A, B place the TC5xx in one of four required phases. A conversion is complete when all four phases have been executed: 00: Integrator Zero Phase control input pins: AB = 01: Auto Zero 10: Integrate 11: Deintegrate 14 19 23 CMPTR OUT Zero crossing comparator output. CMPTR is HIGH during the Integration phase when a positive input voltage is being integrated and is LOW when a negative input voltage is being integrated. A HIGH-to-LOW transition on CMPTR signals the processor that the Deintegrate phase is completed. CMPTR is undefined during the Auto-Zero phase. It should be monitored to time the Integrator Zero phase (see text). 15 23 27 DGND Input. Digital ground. 16 21 25 VDD Input. Power supply positive connection. 22 26 CAP + Input. Negative power supply converter capacitor (+) connection. 24 28 CAP– Input. Negative power supply converter capacitor (–) connection. 11 V – OUT Output. Negative power supply converter output and reservoir capacitor connection. This output can be used to power other devices in the circuit requiring a negative bias voltage. 20 24 OSC Oscillator control input. The negative power supply converter normally runs at a frequency of 100kHz. The converter oscillator frequency can be slowed down (to reduce quiescent current) by connecting an external capacitor between this pin and VDD. (See Typical Character- istics Curves). 18 CH1+ Positive analog input pin. MUX channel 1. 13 CH1 – Negative analog input pin. MUX channel 1. 17 CH2+ Positive analog input pin. MUX channel 2. 12 CH2– Negative analog input pin. MUX channel 2. 16 CH3+ Positive analog input pin. MUX channel 3. 11 CH3 – Negative analog input pin. MUX channel 3. 15 CH4+ Positive analog input pin. MUX channel 4. PRECISION ANALOG FRONT ENDS TC500 TC500A TC510 TC514 |
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