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TLC5620C Datasheet(PDF) 2 Page - Texas Instruments |
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TLC5620C Datasheet(HTML) 2 Page - Texas Instruments |
2 / 17 page TLC5620C, TLC5620I QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS SLAS081E – NOVEMBER 1994 – REVISED NOVEMBER 2001 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 functional block diagram DAC DAC Power-On Reset Serial Interface × 2 Latch Latch Latch Latch DAC × 2 × 2 Latch Latch Latch Latch DAC × 2 LDAC REFA + – + – + – + – + – + – + – + – REFB REFC CLK REFD DATA LOAD DACA DACB DACC DACD 8 8 8 8 8 8 8 8 2 3 4 5 7 6 8 13 12 11 10 9 Terminal Functions TERMINAL I/O DESCRIPTION NAME NO. I/O DESCRIPTION CLK 7 I Serial interface clock. The input digital data is shifted into the serial interface register on the falling edge of the clock applied to the CLK terminal. DACA 12 O DAC A analog output DACB 11 O DAC B analog output DACC 10 O DAC C analog output DACD 9 O DAC D analog output DATA 6 I Serial interface digital data input. The digital code for the DAC is clocked into the serial interface register serially. Each data bit is clocked into the register on the falling edge of the clock signal. GND 1 I Ground return and reference terminal LDAC 13 I Load DAC. When the LDAC signal is high, no DAC output updates occur when the input digital data is read into the serial interface. The DAC outputs are only updated when LDAC is taken from high to low. LOAD 8 I Serial Interface load control. When LDAC is low, the falling edge of the LOAD signal latches the digital data into the output latch and immediately produces the analog voltage at the DAC output terminal. REFA 2 I Reference voltage input to DAC A. This voltage defines the output analog range. REFB 3 I Reference voltage input to DAC B. This voltage defines the output analog range. REFC 4 I Reference voltage input to DAC C. This voltage defines the output analog range. REFD 5 I Reference voltage input to DAC D. This voltage defines the output analog range. VDD 14 I Positive supply voltage |
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