LTC1286 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1286' PDF : 24 Pages View PDF
APPLICATION INFORMATION
LTC1286/LTC1298
CS
SHIFT MUX
ADDRESS IN
DIN 1
DOUT 1
DIN 2
1 NULL BIT SHIFT A/D CONVERSION
RESULT OUT
DOUT 2
LTC1096/98 • AI01
MSB-First Data (MSBF = 0)
CS
tsuCS
CLK
tCYC
POWER DOWN
START
ODD/
SIGN
DIN
DON'T CARE
SGL/ MSBF
DIFF
NULL
DOUT
HI-Z
BIT
B11 B10
B9
B8
B7
B6
B5
B4
B3 B2
B1
B0 B1
B2
B3
B4
B5
B6
B7
B8
B9 B10 B11*
HI-Z
tSMPL
(MSB)
tCONV
tDATA
MSB-First Data (MSBF = 1)
tCYC
CS
CLK
DIN
DOUT
tsuCS
ODD/
START SIGN
SGL/
DIFF
HI-Z
MSBF
DON'T CARE
NULL
BIT B11 B10 B9 B8 B7 B6 B5 B4 B3
tSMPL
(MSB)
tCONV
POWER
DOWN
B2 B1 B0*
HI-Z
tDATA
*AFTER COMPLETING THE DATA TRANSFER, IF FURTHER CLOCKS ARE APPLIED WITH CS LOW,
THE ADC WILL OUTPUT ZEROS INDEFINITELY.
tDATA: DURING THIS TIME, THE BIAS CIRCUIT AND THE COMPARATOR POWER DOWN AND THE REFERENCE INPUT
BECOMES A HIGH IMPEDANCE NODE, LEAVING THE CLK RUNNING TO CLOCK OUT LSB-FIRST DATA OR ZEROES.
Figure 2. LTC1298 Operating Sequence Example: Differential Inputs (CH+, CH–)
LTC1286/98 • F02
11
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