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LTC2668 датащи(PDF) 23 Page - Linear Technology

номер детали LTC2668
подробное описание детали  Octal, 16-Bit, 200ksps Differential 짹10.24V Input SoftSpan ADC with Wide Input Common Mode Range
PDF  40 Pages
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производитель  LINER [Linear Technology]
домашняя страница  http://www.linear.com
Logo LINER - Linear Technology

LTC2668 датащи(HTML) 23 Page - Linear Technology

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LTC2348-16
23
234816fa
For more information www.linear.com/LTC2348-16
applicaTions inForMaTion
SFDR = 119dB
SNR = 94.4dB
±10.24V RANGE
6.2kHz
FREQUENCY (kHz)
0
20
40
60
80
100
–180
–160
–140
–120
–100
–80
–60
–40
–20
0
234816 F06b
Arbitrary Drive
Figure 6b. Two-Tone Test. IN+ = –7dBFS 2kHz Sine, IN– = –7dBFS
3.1kHz Sine, 32k Point FFT, fSMPL = 200ksps. Circuit Shown in
Figure 6a with LT1469 Amplifiers, RFILT = 49.9Ω, CFILT = 1000pF
SNR = 94.4dB
THD = –119dB
SINAD = 94.4dB
SFDR = 121dB
±10.24V RANGE
FREQUENCY (kHz)
0
20
40
60
80
100
–180
–160
–140
–120
–100
–80
–60
–40
–20
0
Fully Differential Drive
234816 F06c
Figure 6c. IN+/IN– = –1dBFS 2kHz Fully Differential Sine,
VCM = 0V, 32k Point FFT, fSMPL = 200ksps. Circuit Shown in
Figure 6a with LT1469 Amplifiers, RFILT = 49.9Ω, CFILT = 1000pF
–15V
–15V
15V
15V
LTC2348-16
234816 F06a
ONLY CHANNEL 0 SHOWN FOR CLARITY
+5V
0V
–5V
FULLY
DIFFERENTIAL
+10V
0V
–10V
TRUE BIPOLAR
+10V
0V
–10V
ARBITRARY
+10V
0V
–10V
UNIPOLAR
–
+
0.1µF
0.1µF
0.1µF
47µF
IN0+
IN0–
AMPLIFIER
AMPLIFIER
VCC
REFIN
REFBUF
VEE
OPTIONAL
LOWPASS FILTERS
CFILT
CFILT
RFILT
RFILT
IN+
IN–
Figure 6a. Buffering Arbitrary, Fully Differential, True Bipolar, and Unipolar Signals. See Table 2 For
Recommended Amplifier and Filter Combinations
SNR = 94.4dB
THD = –109dB
SINAD = 94.3dB
SFDR = 110dB
±10.24V RANGE
FREQUENCY (kHz)
0
20
40
60
80
100
–180
–160
–140
–120
–100
–80
–60
–40
–20
0
True Bipolar Drive
234816 F06d
Figure 6d. IN+ = –1dBFS 2kHz True Bipolar Sine, IN– = 0V, 32k
Point FFT, fSMPL = 200ksps. Circuit Shown in Figure 6a with
LT1469 Amplifiers, RFILT = 49.9Ω, CFILT = 1000pF
SNR = 90.1dB
THD = –111dB
SINAD = 90.1dB
SFDR = 112dB
0V TO 10.24V RANGE
FREQUENCY (kHz)
0
20
40
60
80
100
–180
–160
–140
–120
–100
–80
–60
–40
–20
0
Unipolar Drive
234816 F06e
Figure 6e. IN+ = –1dBFS 2kHz Unipolar Sine, IN– = 0V,
32k Point FFT, fSMPL = 200ksps. Circuit Shown in Figure 6a
with LT1469 Amplifiers, RFILT = 49.9Ω, CFILT = 1000pF



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