LTC2970 Просмотр технического описания (PDF) - Linear Technology
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LTC2970 Datasheet PDF : 36 Pages
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LTC2970/LTC2970-1
TYPICAL PERFOR A CE CHARACTERISTICS
ADC Total Unadjusted Error
vs Temperature
0.050
0.025
0
BASED ON AVERAGE OF 15 PARTS
ASSEMBLED ON 1/8" THICK PCB
1V
–0.025
–0.050
–0.075
–0.100
–0.125
1.8V
2.5V
3.3V
ADC VIN = 5V
–0.150
–0.175
–50
–25 0 25 50
TEMPERATURE (oC)
75 100
29701 G01
ADC Zero Code Center Offset
Voltage vs Temperature
–305
–310
–315
–320
–325
–330
–335
–50 –25 0
25 50
TEMPERATURE (oC)
75 100
29701 G04
ADC INL
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
0
1
2
3
456
INPUT VOLTAGE (V)
29701 G02
ADC DNL
1.00
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
0
1
2
3
4
INPUT VOLTAGE (V)
5
6
29701 G03
ADC Rejection vs Frequency
at VIN
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
1
10
100
1000
FREQUENCY AT VIN (Hz)
10000
29701 G05
ADC Rejection vs Frequency
at VIN
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
0
5000 10000 15000 20000 25000 30000
FREQUENCY AT VIN (Hz)
29701 G06
ADC Noise Histogram
10,000,000
VIN = 0V
1,000,000
100000
10,000
1000
100
10
1
–2
–1
0
1
OUTPUT CODE (LSBs)
2
29701 G07
Voltage Buffered IDAC INL
0.50
CHANNELS 0 AND 1 SHOWN
RIOUT0 = RIOUT1 = 10k7
0.25
Voltage Buffered IDAC DNL
0.50
CHANNELS 0 AND 1 SHOWN
RIOUT0 = RIOUT1 = 10k7
0.25
0
0
–0.25
–0.25
–0.50
0
50 100 150 200 250
DAC CODE
29701 G08
–0.50
0
50 100 150 200 250
DAC CODE
29701 G09
29701fc
7
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