LTC2991 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC2991' PDF : 32 Pages View PDF
LTC2991
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C, VCC = 3.3V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
VDIFF(CMR)
Differential Voltage Common Mode Range
l
0
VCC
VLSB(DIFF)
VLSB(SINGLE_ENDED)
VLSB(TEMP)
Differential Voltage LSB Weight
Single-Ended Voltage LSB Weight
Temperature LSB Weight
Celsius or Kelvin
19.075
305.18
0.0625
VLSB(DIODE_VOLTAGE) Diode Voltage LSB Weight
Includes Series Resistance IR Drop
38.15
TNOISE
TNOISE
RES
Temperature Noise
Temperature Noise
Resolution (No Missing Codes)
Celsius or Kelvin Filter Disengaged
0.2
Celsius or Kelvin Filter Engaged
0.07
(Note 2)
l 14
INL
Integral Nonlinearity
2.9V ≤ VCC ≤ 5.5V, VIN(CM) = 1.5V
(Note 2)
Single-Ended
l –2
2
Differential
l –2
2
CIN
V1 Through V8 Input Sampling Capacitance (Note 2)
0.35
IIN(AVG)
V1 Through V8 Input Average Sampling
(0 ≤ VN ≤ 4.9V) (Note 2)
0.6
Current
IDC_LEAK(VIN)
PWM
V1 Through V8 Input Leakage Current
(0 ≤ VN ≤ VCC)
l –10
10
UNITS
V
µV
µV
Deg
µV
°RMS
°RMS
Bits
LSB
LSB
pF
µA
nA
FPWM
PWM Period
DCPWM
Duty Cycle Range
SCALEPWM
0% to 100% PWM Temperature Range
Measurement Delay
TINTERNAL, TR1, TR2,
TR3, TR4
V1, V2, V3, V4, V5,
V6, V7, V8
Per Configured Temperature
Measurement
Single-Ended Voltage Measurement
V1 – V2, V3 – V4, Differential Voltage Measurement
V5 – V6, V7 – V8
VCC
VCC Measurement
Max Delay
Mode[4:0] = 11101, TINTERNAL, TR1, TR2, TR3,
TR4 VCC
V1, V3, V5, V7 OUTPUT (Remote Diode Mode Only)
l 0.9
1.2
ms
l
0
99.8
%
32
Deg
l 37
46
55
ms
l 0.9
1.5
1.8
ms
l 0.9
1.5
1.8
ms
l 0.9
1.5
1.8
ms
l
277
ms
IOUT
VOUT
I2C Interface
Output Current
Output Voltage
Remote Diode Mode
l
260
350
µA
l
0
VCC
V
VADR(L)
VADR(H)
VOL1
VIL
VIH
ISDAI, SCLI
IADR(MAX)
ADR Input Low Threshold Voltage
ADR Input High Threshold Voltage
SDA Low Level Maximum Voltage
Maximum Low Level Input Voltage
Minimum High Level Input Voltage
SDA, SCL Input Current
Maximum ADR0, ADR1, ADR2 Input Current
Falling
Rising
IO = –3mA, VCC 2.9V to 5.5V
SDA and SCL Pins
SDA and SCL Pins
0 < VSDA, SCL < VCC
ADR0, ADR1 or ADR2 Tied to VCC
or GND
l
l 0.7 • VCC
l
l
l 0.7 • VCC
l
l
0.3 • VCC
V
V
0.4
V
0.3 • VCC
V
V
±1
µA
±1
µA
2991ff
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