Datasheet

LTC2974
10
2974fc
For more information www.linear.com/LTC2974
Typical perForMance characTerisTics
ADC READ_IOUT Input Referred
Noise vs Temperature
Input Sampling Current vs
Differential Input Voltage:
Voltage Sense Inputs
Input Sampling Current vs
Differential Input Voltage: Current
Sense Inputs
ADC READ_VOUT-INL ADC READ_VOUT-DNL
ADC READ_IOUT Error
vs READ_IOUT
Reference Voltage vs
Temperature
ADC READ_VOUT Total Unadjusted
Error vs Temperature
ADC READ_IOUT Input Referred
Offset Voltage vs Temperature
TEMPERATURE (°C)
–50
REFERENCE OUTPUT VOLTAGE (V)
50 75
1.2322
1.2320
1.2318
1.2316
1.2314
1.2312
1.2310
1.2308
1.2306
1.2304
2974 G01
–25 0 25
100
THREE TYPICAL PARTS
TEMPERATURE (°C)
–50
ERROR (%)
50 75
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0.00
–0.03
–0.02
–0.01
2974 G02
–25 0 25
100
THREE TYPICAL PARTS
TEMPERATURE (°C)
–50
OFFSET (µV)
50 75
5
4
3
2
1
0
–1
–2
–5
–4
–3
2974 G03
–25 0 25
100
THREE TYPICAL PARTS
READ_VOUT (V)
0
ERROR (LSBs)
6
5
4
3
2
0
1
–1
–2
–3
–4
–5
2974 G04
1 2 3 4 5
122µV/LSB
READ_VOUT (V)
0
ERROR (LSBs)
6
5
4
3
2
0
1
–1
–2
–3
–4
–5
2974 G05
1 2 3 4 5
122µV/LSB
0.001 0.01 10
100
10.1
READ_IOUT (A)
READ_IOUT ERROR (mA)
75
50
25
0
–25
–50
–75
2974 G06
IOUT_CAL_GAIN = 2.1875mΩ
DIFFERENTIAL INPUT VOLTAGE (V)
0
DIFFERENTIAL INPUT CURRENT (µA)
4 5
7
6
5
4
3
2
1
0
2974 G08
1 2 3
6
TEMPERATURE (°C)
–50
NOISE (µV
RMS
)
50 75
4.50
4.25
4.00
3.75
3.50
3.25
3.00
2.75
2.50
2974 G07
–25 0 25
100
DIFFERENTIAL INPUT VOLTAGE (mV)
0
DIFFERENTIAL INPUT CURRENT (nA)
100 150125
400
350
300
250
200
150
50
100
0
2974 G09
25 50 75
175
V
CM
= 2.5V