LTC1286CS8#PBF Linear Technology, LTC1286CS8#PBF Datasheet - Page 11

• Manufacturer Part Number: LTC1286CS8#PBF
• Description: IC A/D CONV SAMPLING 12BIT 8SOIC
• Manufacturer: Linear Technology

Specifications of LTC1286CS8#PBF

• Number Of Bits: 12
• Sampling Rate (per Second): 12.5k
• Data Interface: MICROWIRE™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 1.25mW
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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