LTC1289CCSW#TR Linear Technology, LTC1289CCSW#TR Datasheet - Page 4

• Manufacturer Part Number: LTC1289CCSW#TR
• Description: IC DATA ACQ SYS 12BIT 3V 20SOIC
• Manufacturer: Linear Technology
• Type: Data Acquisition System (DAS)r

Specifications of LTC1289CCSW#TR

• Resolution (bits): 12 b
• Sampling Rate (per Second): 25k
• Data Interface: Serial, Parallel
• Voltage Supply Source: Dual ±
• Voltage - Supply: 3V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LTC1289
DIGITAL A D
apply over the full operating temperature range, otherwise specifications are at T
SYMBOL
V
V
I
I
V
V
I
I
I
I
I
I
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All voltage values are with respect to ground with DGND, AGND
and REF
Note 3: V
and – 3V for bipolar mode, ACLK = 2.0MHz unless otherwise specified.
Note 4: These specs apply for both unipolar and bipolar modes. In bipolar
mode, one LSB is equal to the bipolar input span (2V
For example, when V
V
Note 5: Integral nonlinearity is defined as the deviation of a code from a
straight line passing through the actual endpoints of the transfer curve.
The deviation is measured from the center of the quantization band.
Note 6: Recommended operating conditions.
4
IH
IL
OZ
SOURCE
SINK
CC
REF
–
IH
IL
OH
OL
–
= – 2.7V for bipolar mode.
–
wired together (unless otherwise noted).
CC
= 3V, V
PARAMETER
High Level Input Voltage
Low Level Input Voltage
High Level Input Current
Low Level Input Current
High Level Output Voltage
Low Level Output Voltage
High Z Output Leakage
Output Source Current
Output Sink Current
Positive Supply Current
Reference Current
Negative Supply Current
REF
REF
+ = 2.5V, V
U
= 2.5V, 1LSB(bipolar) = 2(2.5)/4096 = 1.22mV.
DC
REF
– = 0V, V
ELECTRICAL C
–
= 0V for unipolar mode
REF
) divided by 4096.
CONDITIONS
V
V
V
V
V
V
V
V
V
V
CS High
CS High, Power Shutdown, ACLK Off
V
CS High
CC
CC
IN
IN
CC
CC
OUT
OUT
OUT
OUT
REF
I
I
I
I
O
O
O
O
= V
= 0V
= 3.6V
= 3.0V
= 3.0V
= 3.0V
= 20µA
= 400µA
= 20µA
= 400µA
= 2.5V
= V
= 0V, CS High
= 0V
= V
CC
CC
CC
HARA TER STICS
, CS High
Note 7: Two on-chip diodes are tied to each analog input which will
conduct for analog voltages one diode drop below GND or one diode drop
above V
inputs can cause this input diode to conduct, especially at elevated
temperature, and cause errors for inputs near full scale. This spec allows
50mV forward bias of either diode. This means that as long as the analog
input does not exceed the supply voltage by more than 50mV, the output
code will be correct.
Note 8: Channel leakage current is measured after the channel selection.
Note 9: To minimize errors caused by noise at the chip select input, the
internal circuitry waits for two ACLK falling edges after a chip select falling
edge is detected before responding to control input signals. Therefore, no
attempt should be made to clock an address in or data out until the
minimum chip select set-up time has elasped. See Typical Peformance
Characteristics curves for additional information (t
Note 10: Increased leakage currents at elevated temperatures cause the
S/H to droop, therefore it's recommended that f
f
ACLK
C
≥ 15kHz at 25°C.
CC
. Be careful during testing at low V
I
A
= 25°C. (Note 3)
●
●
●
●
●
●
●
●
●
●
●
●
The
●
denotes the specifications which
MIN
2.1
2.7
LTC1289B
LTC1289C
2.90
2.85
0.05
0.10
TYP
–10
1.5
1.0
CC
10
9
1
levels, as high level analog
ACLK
suCS
≥ 125kHz at 85°C and
MAX
0.45
– 2.5
2.5
0.3
– 3
10
50
50
3
5
vs V
CC
).
UNITS
1289fb
mA
mA
mA
µA
µA
µA
µA
µA
µA
µA
V
V
V
V