Datasheet

LTC2990
3
Rev. F
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ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 3.3V, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OFFSET_DIFF
Differential Offset V1 = V2 = V
CC
, V3 = V4 = 0V –12.5 0 12.5 LSB
V
OFFSET_SE
Single-Ended Offset V1, V2, V3, V4 = 0V –6 0 6 LSB
V
DIFF(CMR)
Differential Voltage Common Mode Range
l
0 V
CC
V
V
LSB(DIFF)
Differential Voltage LSB Weight 19.42 µV
V
LSB(SINGLE-ENDED)
Single-Ended Voltage LSB Weight 305.18 µV
V
LSB(TEMP)
Temperature LSB Weight Celsius or Kelvin 0.0625 Deg
T
NOISE
Temperature Noise Celsius or Kelvin
T
MEAS
= 46ms (Note 2)
0.2
0.05
°RMS
°/√Hz
Res Resolution (No Missing Codes) (Note 2)
l
14 Bits
INL Integral Nonlinearity 2.9V ≤ V
CC
≤ 5.5V, V
IN(CM)
= 1.5V
(Note 2)
Single-Ended
Differential
l
–2
–2
2
2
LSB
LSB
C
IN
V1 Through V4 Input Sampling
Capacitance
(Note 2) 0.35 pF
I
IN(AVG)
V1 Through V4 Input Average Sampling
Current
0V ≤ V
N
≤ 3V (Note 2) 0.6 µA
I
DC_LEAK(VIN)
V1 Through V4 Input Leakage Current 0V ≤ V
N
≤ V
CC
l
–10 10 nA
Measurement Delay
T
INT
, T
R1
, T
R2
Per Configured Temperature Measurement (Note 2)
l
37 46 55 ms
V1, V2, V3, V4 Single-Ended Voltage Measurement (Note 2) Per Voltage, Two Minimum
l
1.2 1.5 1.8 ms
V1 – V2, V3 – V4 Differential Voltage Measurement (Note 2)
l
1.2 1.5 1.8 ms
V
CC
V
CC
Measurement (Note 2)
l
1.2 1.5 1.8 ms
Max Delay Mode[4:0] = 11101, T
INT
, T
R1
, T
R2
, V
CC
(Note 2)
l
167 ms
V1, V3 Output (Remote Diode Mode Only)
I
OUT
Output Current Remote Diode Mode
l
260 350 µA
V
OUT
Output Voltage
l
0 V
CC
V
I
2
C Interface
V
ADR(L)
ADR0, ADR1 Input Low Threshold Voltage Falling
l
0.3 • V
CC
V
V
ADR(H)
ADR0, ADR1 Input High Threshold Voltage Rising
l
0.7 • V
CC
V
V
OL1
SDA Low Level Maximum Voltage I
O
= –3mA, V
CC
= 2.9V to 5.5V
l
0.4 V
V
IL
Maximum Low Level Input Voltage SDA and SCL Pins
l
0.3 • V
CC
V
V
IH
Minimum High Level Input Voltage SDA and SCL Pins
l
0.7 • V
CC
V
I
SDAI,SCLI
SDA, SCL Input Current 0 < V
SDA
,
SCL
< V
CC
l
±1 µA
I
ADR(MAX)
Maximum ADR0, ADR1 Input Current ADR0 or ADR1 Tied to V
CC
or GND
l
±1 µA
I
2
C Timing (Note 2)
f
SCL(MAX)
Maximum SCL Clock Frequency 400 kHz
t
LOW
Minimum SCL Low Period 1.3 µs
t
HIGH
Minimum SCL High Period 600 ns
t
BUF(MIN)
Minimum Bus Free Time Between Stop/
Start Condition
1.3 µs
t
HD,STA(MIN)
Minimum Hold Time After (Repeated)
Start Condition
600 ns
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