LTC2978 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC2978' PDF : 64 Pages View PDF
LTC2978
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)
2978 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)
2978 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)
2978 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)
2978 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)
2978 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)
2978 G06
ADC Rejection
vs Frequency at VIN
0
–20
–40
–60
–80
–100
–120
0
12500 25000 37500 50000 62500
FREQUENCY (Hz)
2978 G07
10
ADC Rejection
vs Frequency at VIN (Zoom)
0
–20
–40
–60
–80
–100
–120
0
3125
6250
9375
FREQUENCY (Hz)
12500
2978 G08
For more information www.linear.com/LTC2978
ADC Rejection vs Frequency
at VIN (Current Sense Mode)
0
–20
–40
–60
–80
–100
–120
0
12500 25000 37500 50000 62500
FREQUENCY (Hz)
2978 G09
2978fd
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