LTC2978C View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC2978C' PDF : 64 Pages View PDF
Typical Performance Characteristics
ADC Rejection vs Frequency
at VIN (Current Sense Mode, Zoom)
0
–20
ADC Noise Histogram
1200
1000
VIN = 0V
HIGH RESOLUTION MODE
–40
800
–60
600
–80
–100
–120
0
3125
6250
9375
FREQUENCY (Hz)
12500
2978 G10
Input Sampling Current
vs Differential Input Voltage
9
8
7
6
5
4
3
2
1
0
0
1
2
3
4
5
6
INPUT VOLTAGE (V)
2978 G13
400
200
0
–20
–10
0
10
READ_VOUT (µV)
20
2978 G11
ADC High Resolution Mode
Differential Input Current
90
80
70
60
50
40
30
20
10
0
0 20 40 60 80 100 120 140 160 180
DIFFERENTIAL INPUT VOLTAGE (mV)
2978 G14
LTC2978
Voltage Supervisor Total
Unadjusted Error vs Temperature
0
VIN = 0.8V
–0.05 HIGH RESOLUTION MODE
–0.10
–0.15
–0.20
–0.25
–0.30
–0.35
–0.40
–50 –35 –20 –5 10 25 40 55 70 85 100
TEMPERATURE (°C)
2978 G12
DAC Full-Scale Output Voltage vs
Temperature
2.698
2.696
2.694
2.692
2.690
2.688
2.686
2.684
2.682
2.680
2.678
–50 –35 –20 –5 10 25 40 55 70 85 100
TEMPERATURE (°C)
2978 G15
DAC Offset Voltage vs
Temperature
2.5
2.3
2.1
1.9
1.7
1.5
1.3
1.1
0.9
0.7
0.5
–50 –35 –20 –5 10 25 40 55 70 85 100
TEMPERATURE (°C)
2978 G16
DAC-INL
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
200
400 600
DAC CODE
800 1000
2978 G17
For more information www.linear.com/LTC2978
DAC-DNL
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
200
400 600
DAC CODE
800 1000
2978 G18
2978fd
11
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