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LDC1614-Q1 Datasheet(PDF) 11 Page - Texas Instruments |
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LDC1614-Q1 Datasheet(HTML) 11 Page - Texas Instruments |
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11 / 62 page  Copyright © 2016, Texas Instruments Incorporated fSENSOR0 fSENSOR1 fSENSOR2 (1) fSENSOR3 (1) tfCLKINt ÷ n ÷ n CH3_FREF_DIVIDER (0x17) (1) CH2_FREF_DIVIDER (0x16) (1) Int. Osc. Core tfREFt Data Output tfINTt REF_CLK_SRC (0x1A) CONFIG (0x1A) MUX_CONFIG (0x1B) ÷ n ÷ n CH1_FREF_DIVIDER (0x15) CH0_FREF_DIVIDER (0x14) fREF0 fREF1 fREF2 (1) fREF3 (1) ÷ m ÷ m CH3_FIN_DIVIDER (0x17) (1) CH2_FIN_DIVIDER (0x16) (1) tfINt ÷ m ÷ m CH1_FIN_DIVIDER (0x15) CH0_FIN_DIVIDER (0x14) fIN0 fIN1 fIN2 (1) fIN3 (1) tfCLKt CONFIG (0x1A) MUX_CONFIG (0x1B) IN2A (1) IN2B (1) IN3A (1) IN3B (1) IN1A IN1B IN0A IN0B Sensor 2 (1) CLKIN Sensor 3 (1) Sensor 1 Sensor 0 11 LDC1612-Q1, LDC1614-Q1 www.ti.com SNOSCZ8 – APRIL 2016 Product Folder Links: LDC1612-Q1 LDC1614-Q1 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Feature Description (continued) (1) Channels 2 and 3 are only available for LDC1614 (2) If fSENSOR ≥ 8.75 MHz, then CHx_FIN_DIVIDER must be ≥ 2 Figure 11. Clocking Diagram (1) LDC1614 only In Figure 11, the key clocks are fIN, fREF, and fCLK. fCLK is selected from either the internal clock source or external clock source (CLKIN). The frequency measurement reference clock, fREF, is derived from the fCLK source. TI recommends that precision applications use an external master clock that offers the stability and accuracy requirements needed for the application. The internal oscillator may be used in applications that require low cost and do not require high precision. The fINx clock is derived from sensor frequency for a channel x, fSENSORx. fREFx and fINx must meet the requirements listed in Table 1, depending on whether fCLK (master clock) is the internal or external clock. Table 1. Clock Configuration Requirements MODE(1) CLKIN SOURCE VALID fREFx RANGE (MHz) VALID fINx RANGE SET CHx_FIN_DIVIDE R to SET CHx_SETTLECO UNT to SET CHx_RCOUNT to Multi-Channel Internal fREFx < 55 < fREFx /4 ≥ b0001 (2) > 3 > 8 External fREFx < 40 Single-Channel Either external or internal fREFx < 35 |
Similar Part No. - LDC1614-Q1 |
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Similar Description - LDC1614-Q1 |
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