LTC2978A
Typical Performance Characteristics
Reference Voltage vs Temperature
1.2355
1.2350
1.2345
1.2340
1.2335
1.2330
1.2325
1.2320
1.2315
THREE TYPICAL PARTS
1.2310
–50 –35 –20 –5 10 25 40 55 70 85 100
TEMPERATURE (°C)
2978a G01
Temperature Sensor Error
vs Temperature
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–50 –35 –20 –5 10 25 40 55 70 85 100
TEMPERATURE (°C)
2978a G02
ADC Zero Code Center Offset
Voltage vs Temperature
0
VOLTAGE SENSE MODE
–20
–40
–60
–80
–100
–120
–140
–160
–180
–50 –35 –20 –5 10 25 40 55 70 85 100
TEMPERATURE (°C)
2978a G04
ADC-INL
3.0
122µV/LSB
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–0.2 0.8 1.8 2.8 3.8 4.8 5.8
INPUT VOLTAGE (V)
2978a G05
ADC Total Unadjusted Error
vs Temperature
0.035 ADC VIN = 1.8V
0.030
0.025
0.020
0.015
0.010
0.005
0
–50 –35 –20 –5 10 25 40 55 70 85 100
TEMPERATURE (°C)
2978a G03
ADC-DNL
0.8
122µV/LSB
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
–0.2 0.8 1.8 2.8 3.8 4.8 5.8
INPUT VOLTAGE (V)
2978a G06
ADC Rejection
vs Frequency at VIN
0
–20
–40
–60
–80
–100
–120
0
12500 25000 37500 50000 62500
FREQUENCY (Hz)
2978a G07
10
ADC Rejection
vs Frequency at VIN (Zoom)
0
–20
–40
–60
–80
–100
–120
0
3125
6250
9375
FREQUENCY (Hz)
12500
2978a G08
For more information www.linear.com/LTC2978A
ADC Rejection vs Frequency
at VIN (Current Sense Mode)
0
–20
–40
–60
–80
–100
–120
0
12500 25000 37500 50000 62500
FREQUENCY (Hz)
2978a G09
2978af