
3
LTC1282
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Analog Input Range (Note 11)
2.7V
≤ VDD ≤ 3.6V (Unipolar Mode)
0 to 2.5
V
3V
≤ VDD ≤ 3.6V, –3.3V ≤ VSS ≤ –2.5V (Bipolar Mode)
±1.25
V
IIN
Analog Input Leakage Current
CS = High
q
±1
A
CIN
Analog Input Capacitance
Between Conversions (Sample Mode)
63
pF
During Conversions (Hold Mode)
5
pF
tACQ
Sample-and-Hold
Commercial
q
0.45
1.14
s
Acquisition Time
Military
q
1.5
s
(Note 5)
PUT
U
I
A
U
LOG
LTC1282A/LTC1282B
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
VREF Output Voltage
IOUT = 0
1.1900
1.200
1.210
1.190
1.200
1.210
V
VREF Output Tempco
IOUT = 0
q
±5
±25
±10
±45
ppm/
°C
VREF Line Regulation
2.7V
≤ VDD ≤ 3.6V
0.55
LSB/V
– 3.6V
≤ VSS ≤ –2.7V
0.02
LSB/V
VREF Load Regulation
0V
≤ |IOUT| ≤ 1mA
3
LSB/mA
LTC1282B
LTC1282A
I TER AL REFERE CE CHARACTERISTICS (Note 5)
U
UU
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIH
High Level Input Voltage
VDD = 3.6V
q
1.9
V
VIL
Low Level Input Voltage
VDD = 2.7V
q
0.45
V
IIN
Digital Input Current
VIN = 0V to VDD
q
±10
A
CIN
Digital Input Capacitance
5pF
VOH
High Level Output Voltage
VDD = 2.7V
IO = – 10A
2.6
V
IO = – 200A
q
2.3
V
VOL
Low Level Output Voltage
VDD = 2.7V
IO = 160A
0.05
V
IO = 1.6mA
q
0.10
0.4
V
IOZ
High Z Output Leakage D11-D0/8
VOUT = 0V to VDD, CS High
q
±10
A
COZ
High Z Output Capacitance D11-D0/8
CS High (Note 12 )
q
15
pF
ISOURCE
Output Source Current
VOUT = 0V
– 4.5
mA
ISINK
Output Sink Current
VOUT = VDD
4.5
mA
LTC1282A/LTC1282B
(Note 5)
DIGITAL I PUTS A D DIGITAL OUTPUTS
U
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VDD
Positive Supply Voltage
Unipolar Mode (Note 13)
2.7
3.6
V
Bipolar Mode (Note 13)
3.0
3.6
V
VSS
Negative Supply Voltage
Bipolar Operation (Note 13)
– 3.6
– 2.5
V
IDD
Positive Supply Current
fSAMPLE = 140ksps
q
4
7.8
mA
ISS
Negative Supply Current
fSAMPLE = 140ksps
q
0.03
0.15
mA
PD
Power Dissipation
fSAMPLE = 140ksps
q
12
24
mW
(Note 5)
LTC1282A/LTC1282B
POWER REQUIRE E TS
W U