Datasheet

LTC2970/LTC2970-1
7
29701fc
OUTPUT CODE (LSBs)
–2
100000
1,000,000
10,000,000
1
29701 G07
10,000
1000
–1 0 2
100
10
1
NUMBER OF READINGS
V
IN
= 0V
DAC CODE
0
ERROR (LSBs)
0
0.25
200
29701 G08
–0.25
–0.50
50
100
150
250
0.50
CHANNELS 0 AND 1 SHOWN
R
IOUT0
= R
IOUT1
= 10k7
DAC CODE
0
ERROR (LSBs)
0
0.25
200
29701 G09
–0.25
–0.50
50
100
150
250
0.50
CHANNELS 0 AND 1 SHOWN
R
IOUT0
= R
IOUT1
= 10k7
TEMPERATURE (oC)
–50
–0.175
ERROR (%)
–0.150
–0.100
–0.075
–0.050
50
0.050
29701 G01
–0.125
0
–25
75
25 10
0
–0.025
0
0.025
BASED ON AVERAGE OF 15 PARTS
ASSEMBLED ON 1/8" THICK PCB
1V
1.8V
2.5V
3.3V
ADC V
IN
= 5V
INPUT VOLTAGE (V)
0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
35
29701 G02
12
46
ERROR (LSBs)
INPUT VOLTAGE (V)
0
ERROR (LSBs)
–0.25
0
0.25
3
5
29701 G03
–0.50
–0.75
–1.00
12 4
0.50
0.75
1.00
6
TEMPERATURE (oC)
–50
–335
V
OS
(MV)
–330
–325
–320
–315
–305
–25
02550
29701 G04
75 100
–310
FREQUENCY AT V
IN
(Hz)
1
–100
REJECTION (dB)
–90
–70
–60
–50
0
–30
10
100
29701 G05
–80
–20
–10
–40
1000
10000
FREQUENCY AT V
IN
(Hz)
0
–100
REJECTION (dB)
–80
–60
–40
5000
10000
15000 20000
29701 G06
25000
–20
0
–90
–70
–50
–30
–10
30000
ADC Total Unadjusted Error
vs Temperature ADC INL ADC DNL
TYPICAL PERFOR A CE CHARACTERISTICS
UW
ADC Zero Code Center Offset
Voltage vs Temperature
ADC Rejection vs Frequency
at V
IN
ADC Noise Histogram
Voltage Buffered IDAC INL
ADC Rejection vs Frequency
at V
IN
Voltage Buffered IDAC DNL