TLC5620C_08 Datasheet, PDF (4/17 Pages) Texas Instruments – QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS

TLC5620C, TLC5620I
QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS
SLAS081E – NOVEMBER 1994 – REVISED NOVEMBER 2001
CLK
DATA
LOAD
LDAC
tsu(DATA-CLK)
tv(DATA-CLK)
A1
A0 RNG D7
D6
D5
D4
D3
D2
D1
D0
tsu(LOAD-LDAC)
tw(LDAC)
Figure 2. LDAC-Controlled Update
DAC Update
CLK Low
CLK
ÎÎÎÎÎÎ ÎÎÎ ÎÎÎ ^DATA
A1 A0 RNG
D7 D6
D5
D4
D3
D2
D1 D0
LOAD
LDAC
Figure 3. Load-Controlled Update Using 8-Bit Serial Word (LDAC = Low)
CLK Low
CLK
ÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ^DATA
A1 A0 RNG
D7 D6
D5
D4
D3
D2
D1 D0
LOAD
LDAC
Figure 4. LDAC-Controlled Update Using 8-Bit Serial Word
Table 2 lists the A1 and A0 bits and the selection of the updated DACs. The RNG bit controls the DAC output
range. When RNG = low, the output range is between the applied reference voltage and GND, and when
RNG = high, the range is between twice the applied reference voltage and GND.
Table 2. Serial Input Decode
A1
A0
0
0
0
1
1
0
1
1
DAC UPDATED
DACA
DACB
DACC
DACD
4
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